mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-19 09:38:32 -04:00
Add FreeRTOS-Plus directory.
This commit is contained in:
Richard Barry
parent
7bd5f21ad5
commit
f508a5f653
6798 changed files with 134949 additions and 19 deletions
117
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/FreeRTOSConfig.h
Normal file
117
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/FreeRTOSConfig.h
Normal file
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|
@ -0,0 +1,117 @@
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/*
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FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
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|
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|
||||
***************************************************************************
|
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* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
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||||
* *
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||||
***************************************************************************
|
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|
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|
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http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
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#ifndef FREERTOS_CONFIG_H
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#define FREERTOS_CONFIG_H
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#include <lpc210x.h>
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/*-----------------------------------------------------------
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* Application specific definitions.
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*
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* These definitions should be adjusted for your particular hardware and
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* application requirements.
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*
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* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
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* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
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*
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* See http://www.freertos.org/a00110.html.
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*----------------------------------------------------------*/
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#define configUSE_PREEMPTION 1
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#define configUSE_IDLE_HOOK 0
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#define configUSE_TICK_HOOK 0
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#define configCPU_CLOCK_HZ ( ( unsigned long ) 58982400 ) /* =14.7456MHz xtal multiplied by 4 using the PLL. */
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#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
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#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 5 )
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#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 128 )
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#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 23 * 1024 ) )
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#define configMAX_TASK_NAME_LEN ( 16 )
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#define configUSE_TRACE_FACILITY 0
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#define configUSE_16_BIT_TICKS 0
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#define configIDLE_SHOULD_YIELD 1
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/* Co-routine definitions. */
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#define configUSE_CO_ROUTINES 0
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#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
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/* Set the following definitions to 1 to include the API function, or zero
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to exclude the API function. */
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#define INCLUDE_vTaskPrioritySet 1
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#define INCLUDE_uxTaskPriorityGet 1
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#define INCLUDE_vTaskDelete 1
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#define INCLUDE_vTaskCleanUpResources 0
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#define INCLUDE_vTaskSuspend 1
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#define INCLUDE_vTaskDelayUntil 1
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#define INCLUDE_vTaskDelay 1
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#endif /* FREERTOS_CONFIG_H */
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120
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/HTTP_Serv.c
Normal file
120
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/HTTP_Serv.c
Normal file
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|
@ -0,0 +1,120 @@
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/*
|
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FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
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|
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/* Standard includes. */
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#include <stdlib.h>
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/* Scheduler include files. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Application includes. */
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#include "tcp.h"
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/* Misc constants. */
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#define tcpPOLL_DELAY ( ( portTickType ) 12 / portTICK_RATE_MS )
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#define tcpCONNECTION_DELAY ( ( portTickType ) 8 / portTICK_RATE_MS )
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/*-----------------------------------------------------------*/
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/*
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* This task initialises the hardware then processes one TCP connection at a
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* time. When an HTTP client connects we just simply send a single page then
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* disconnect - reset the socket data and wait for the next connection.
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*/
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void vHTTPServerTask( void *pvParameters )
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{
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/* Reset the network hardware. */
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vTCPHardReset();
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/* Loop, processing connections are they arrive. */
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for( ;; )
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{
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/* Initialise the TCP interface.
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The current minimal implementation does not check for buffer overflows
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in the WIZnet hardware, so simply resets all the buffers for each
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connection - and only processes one connection at a time. */
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if( lTCPSoftReset() )
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{
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/* Create the socket that is going to accept incoming connections. */
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if( lTCPCreateSocket() )
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{
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/* Wait for a connection. */
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vTCPListen();
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/* Process connections as they arrive. This function will only
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return once the connection has been closed. */
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lProcessConnection();
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}
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}
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/* If we get here then the connection completed or failed. Wait a
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while then try or start again. */
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vTaskDelay( tcpCONNECTION_DELAY );
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}
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}
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72
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/HTTP_Serv.h
Normal file
72
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/HTTP_Serv.h
Normal file
|
|
@ -0,0 +1,72 @@
|
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/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
#ifndef HTTP_H
|
||||
#define HTTP_H
|
||||
|
||||
void vHTTPServerTask( void *pvParameters );
|
||||
|
||||
#endif
|
||||
139
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/Makefile
Normal file
139
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/Makefile
Normal file
|
|
@ -0,0 +1,139 @@
|
|||
#/*
|
||||
# FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
#
|
||||
#
|
||||
# ***************************************************************************
|
||||
# * *
|
||||
# * FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
# * Complete, revised, and edited pdf reference manuals are also *
|
||||
# * available. *
|
||||
# * *
|
||||
# * Purchasing FreeRTOS documentation will not only help you, by *
|
||||
# * ensuring you get running as quickly as possible and with an *
|
||||
# * in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
# * the FreeRTOS project to continue with its mission of providing *
|
||||
# * professional grade, cross platform, de facto standard solutions *
|
||||
# * for microcontrollers - completely free of charge! *
|
||||
# * *
|
||||
# * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
# * *
|
||||
# * Thank you for using FreeRTOS, and thank you for your support! *
|
||||
# * *
|
||||
# ***************************************************************************
|
||||
#
|
||||
#
|
||||
# This file is part of the FreeRTOS distribution.
|
||||
#
|
||||
# FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
# the terms of the GNU General Public License (version 2) as published by the
|
||||
# Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
# >>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
# distribute a combined work that includes FreeRTOS without being obliged to
|
||||
# provide the source code for proprietary components outside of the FreeRTOS
|
||||
# kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
# more details. You should have received a copy of the GNU General Public
|
||||
# License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
# can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
# by writing to Richard Barry, contact details for whom are available on the
|
||||
# FreeRTOS WEB site.
|
||||
#
|
||||
# 1 tab == 4 spaces!
|
||||
#
|
||||
# http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
# contact details.
|
||||
#
|
||||
# http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||
# critical systems.
|
||||
#
|
||||
# http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||
# licensing and training services.
|
||||
#*/
|
||||
|
||||
|
||||
CC=arm-elf-gcc
|
||||
OBJCOPY=arm-elf-objcopy
|
||||
ARCH=arm-elf-ar
|
||||
CRT0=boot.s
|
||||
USE_THUMB_MODE=YES
|
||||
DEBUG=-g
|
||||
OPTIM=-Os
|
||||
RUN_MODE=RUN_FROM_ROM
|
||||
LDSCRIPT=lpc2106-rom.ld
|
||||
|
||||
|
||||
#
|
||||
# CFLAGS common to both the THUMB and ARM mode builds
|
||||
#
|
||||
CFLAGS=-Wall -D $(RUN_MODE) -D GCC_ARM7 -I. -I../../Source/include \
|
||||
-I../Common/include $(DEBUG) -mcpu=arm7tdmi -T$(LDSCRIPT) \
|
||||
-Wcast-align $(OPTIM) -fomit-frame-pointer
|
||||
|
||||
ifeq ($(USE_THUMB_MODE),YES)
|
||||
CFLAGS += -mthumb-interwork -D THUMB_INTERWORK
|
||||
THUMB_FLAGS=-mthumb
|
||||
endif
|
||||
|
||||
|
||||
LINKER_FLAGS=-Xlinker -oWebServeDemo.elf -Xlinker -M -Xlinker -Map=WebServeDemo.map
|
||||
|
||||
#
|
||||
# Source files that can be built to THUMB mode.
|
||||
#
|
||||
THUMB_SRC = \
|
||||
../../Source/tasks.c \
|
||||
../../Source/queue.c \
|
||||
../../Source/list.c \
|
||||
../../Source/portable/MemMang/heap_2.c \
|
||||
../../Source/portable/GCC/ARM7_LPC2000/port.c \
|
||||
../Common/Minimal/flash.c \
|
||||
../Common/Minimal/dynamic.c \
|
||||
../Common/Minimal/semtest.c \
|
||||
../Common/Minimal/PollQ.c \
|
||||
../Common/Minimal/BlockQ.c \
|
||||
../Common/Minimal/integer.c \
|
||||
../ARM7_LPC2106_GCC/ParTest/ParTest.c \
|
||||
main.c \
|
||||
TCP.c \
|
||||
HTTP_Serv.c \
|
||||
i2c.c
|
||||
|
||||
#
|
||||
# Source files that must be built to ARM mode.
|
||||
#
|
||||
ARM_SRC = \
|
||||
../../Source/portable/GCC/ARM7_LPC2000/portISR.c \
|
||||
i2cISR.c \
|
||||
TCPISR.c
|
||||
|
||||
#
|
||||
# Define all object files.
|
||||
#
|
||||
ARM_OBJ = $(ARM_SRC:.c=.o)
|
||||
THUMB_OBJ = $(THUMB_SRC:.c=.o)
|
||||
|
||||
WebServeDemo.hex : WebServeDemo.elf
|
||||
$(OBJCOPY) WebServeDemo.elf -O ihex WebServeDemo.hex
|
||||
|
||||
WebServeDemo.elf : $(ARM_OBJ) $(THUMB_OBJ) $(CRT0) Makefile
|
||||
$(CC) $(CFLAGS) $(ARM_OBJ) $(THUMB_OBJ) -nostartfiles $(CRT0) $(LINKER_FLAGS)
|
||||
|
||||
$(THUMB_OBJ) : %.o : %.c $(LDSCRIPT) Makefile
|
||||
$(CC) -c $(THUMB_FLAGS) $(CFLAGS) $< -o $@
|
||||
|
||||
$(ARM_OBJ) : %.o : %.c $(LDSCRIPT) Makefile
|
||||
$(CC) -c $(CFLAGS) $< -o $@
|
||||
|
||||
clean :
|
||||
touch makefile
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
774
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCP.c
Normal file
774
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCP.c
Normal file
|
|
@ -0,0 +1,774 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
/*
|
||||
Changes from V3.2.3
|
||||
|
||||
+ Modified char* types to compile without warning when using GCC V4.0.1.
|
||||
+ Corrected the address to which the MAC address is written. Thanks to
|
||||
Bill Knight for this correction.
|
||||
|
||||
Changes from V3.2.4
|
||||
|
||||
+ Changed the default MAC address to something more realistic.
|
||||
|
||||
*/
|
||||
|
||||
/* Standard includes. */
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "task.h"
|
||||
#include "semphr.h"
|
||||
#include "tcp.h"
|
||||
#include "serial.h"
|
||||
|
||||
/* Application includes. */
|
||||
#include "i2c.h"
|
||||
#include "html_pages.h"
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Hardwired i2c address of the WIZNet device. */
|
||||
#define tcpDEVICE_ADDRESS ( ( unsigned char ) 0x00 )
|
||||
|
||||
/* Constants used to configure the Tx and Rx buffer sizes within the WIZnet
|
||||
device. */
|
||||
#define tcp8K_RX ( ( unsigned char ) 0x03 )
|
||||
#define tcp8K_TX ( ( unsigned char ) 0x03 )
|
||||
|
||||
/* Constants used to generate the WIZnet internal buffer addresses. */
|
||||
#define tcpSINGLE_SOCKET_ADDR_MASK ( ( unsigned long ) 0x1fff )
|
||||
#define tcpSINGLE_SOCKET_ADDR_OFFSET ( ( unsigned long ) 0x4000 )
|
||||
|
||||
/* Bit definitions of the commands that can be sent to the command register. */
|
||||
#define tcpRESET_CMD ( ( unsigned char ) 0x80 )
|
||||
#define tcpSYS_INIT_CMD ( ( unsigned char ) 0x01 )
|
||||
#define tcpSOCK_STREAM ( ( unsigned char ) 0x01 )
|
||||
#define tcpSOCK_INIT ( ( unsigned char ) 0x02 )
|
||||
#define tcpLISTEN_CMD ( ( unsigned char ) 0x08 )
|
||||
#define tcpRECEIVE_CMD ( ( unsigned char ) 0x40 )
|
||||
#define tcpDISCONNECT_CMD ( ( unsigned char ) 0x10 )
|
||||
#define tcpSEND_CMD ( ( unsigned char ) 0x20 )
|
||||
|
||||
/* Constants required to handle the interrupts. */
|
||||
#define tcpCLEAR_EINT0 ( 1 )
|
||||
#define i2cCLEAR_ALL_INTERRUPTS ( ( unsigned char ) 0xff )
|
||||
#define i2cCHANNEL_0_ISR_ENABLE ( ( unsigned char ) 0x01 )
|
||||
#define i2cCHANNEL_0_ISR_DISABLE ( ( unsigned char ) 0x00 )
|
||||
#define tcpWAKE_ON_EINT0 ( 1 )
|
||||
#define tcpENABLE_EINT0_FUNCTION ( ( unsigned long ) 0x01 )
|
||||
#define tcpEINT0_VIC_CHANNEL_BIT ( ( unsigned long ) 0x4000 )
|
||||
#define tcpEINT0_VIC_CHANNEL ( ( unsigned long ) 14 )
|
||||
#define tcpEINT0_VIC_ENABLE ( ( unsigned long ) 0x0020 )
|
||||
|
||||
/* Various delays used in the driver. */
|
||||
#define tcpRESET_DELAY ( ( portTickType ) 16 / portTICK_RATE_MS )
|
||||
#define tcpINIT_DELAY ( ( portTickType ) 500 / portTICK_RATE_MS )
|
||||
#define tcpLONG_DELAY ( ( portTickType ) 500 / portTICK_RATE_MS )
|
||||
#define tcpSHORT_DELAY ( ( portTickType ) 5 / portTICK_RATE_MS )
|
||||
#define tcpCONNECTION_WAIT_DELAY ( ( portTickType ) 100 / portTICK_RATE_MS )
|
||||
#define tcpNO_DELAY ( ( portTickType ) 0 )
|
||||
|
||||
/* Length of the data to read for various register reads. */
|
||||
#define tcpSTATUS_READ_LEN ( ( unsigned long ) 1 )
|
||||
#define tcpSHADOW_READ_LEN ( ( unsigned long ) 1 )
|
||||
|
||||
/* Register addresses within the WIZnet device. */
|
||||
#define tcpCOMMAND_REG ( ( unsigned short ) 0x0000 )
|
||||
#define tcpGATEWAY_ADDR_REG ( ( unsigned short ) 0x0080 )
|
||||
#define tcpSUBNET_MASK_REG ( ( unsigned short ) 0x0084 )
|
||||
#define tcpSOURCE_HA_REG ( ( unsigned short ) 0x0088 )
|
||||
#define tpcSOURCE_IP_REG ( ( unsigned short ) 0x008E )
|
||||
#define tpcSOCKET_OPT_REG ( ( unsigned short ) 0x00A1 )
|
||||
#define tcpSOURCE_PORT_REG ( ( unsigned short ) 0x00AE )
|
||||
#define tcpTX_WRITE_POINTER_REG ( ( unsigned short ) 0x0040 )
|
||||
#define tcpTX_READ_POINTER_REG ( ( unsigned short ) 0x0044 )
|
||||
#define tcpTX_ACK_POINTER_REG ( ( unsigned short ) 0x0018 )
|
||||
#define tcpTX_MEM_SIZE_REG ( ( unsigned short ) 0x0096 )
|
||||
#define tcpRX_MEM_SIZE_REG ( ( unsigned short ) 0x0095 )
|
||||
#define tcpINTERRUPT_STATUS_REG ( ( unsigned short ) 0x0004 )
|
||||
#define tcpTX_WRITE_SHADOW_REG ( ( unsigned short ) 0x01F0 )
|
||||
#define tcpTX_ACK_SHADOW_REG ( ( unsigned short ) 0x01E2 )
|
||||
#define tcpISR_MASK_REG ( ( unsigned short ) 0x0009 )
|
||||
#define tcpINTERRUPT_REG ( ( unsigned short ) 0x0008 )
|
||||
#define tcpSOCKET_STATE_REG ( ( unsigned short ) 0x00a0 )
|
||||
|
||||
/* Constants required for hardware setup. */
|
||||
#define tcpRESET_ACTIVE_LOW ( ( unsigned long ) 0x20 )
|
||||
#define tcpRESET_ACTIVE_HIGH ( ( unsigned long ) 0x10 )
|
||||
|
||||
/* Constants defining the source of the WIZnet ISR. */
|
||||
#define tcpISR_SYS_INIT ( ( unsigned char ) 0x01 )
|
||||
#define tcpISR_SOCKET_INIT ( ( unsigned char ) 0x02 )
|
||||
#define tcpISR_ESTABLISHED ( ( unsigned char ) 0x04 )
|
||||
#define tcpISR_CLOSED ( ( unsigned char ) 0x08 )
|
||||
#define tcpISR_TIMEOUT ( ( unsigned char ) 0x10 )
|
||||
#define tcpISR_TX_COMPLETE ( ( unsigned char ) 0x20 )
|
||||
#define tcpISR_RX_COMPLETE ( ( unsigned char ) 0x40 )
|
||||
|
||||
/* Constants defining the socket status bits. */
|
||||
#define tcpSTATUS_ESTABLISHED ( ( unsigned char ) 0x06 )
|
||||
#define tcpSTATUS_LISTEN ( ( unsigned char ) 0x02 )
|
||||
|
||||
/* Misc constants. */
|
||||
#define tcpNO_STATUS_BITS ( ( unsigned char ) 0x00 )
|
||||
#define i2cNO_ADDR_REQUIRED ( ( unsigned short ) 0x0000 )
|
||||
#define i2cNO_DATA_REQUIRED ( 0x0000 )
|
||||
#define tcpISR_QUEUE_LENGTH ( ( unsigned portBASE_TYPE ) 10 )
|
||||
#define tcpISR_QUEUE_ITEM_SIZE ( ( unsigned portBASE_TYPE ) 0 )
|
||||
#define tcpBUFFER_LEN ( 4 * 1024 )
|
||||
#define tcpMAX_REGISTER_LEN ( 4 )
|
||||
#define tcpMAX_ATTEMPTS_TO_CHECK_BUFFER ( 6 )
|
||||
#define tcpMAX_NON_LISTEN_STAUS_READS ( 5 )
|
||||
|
||||
/* Message definitions. The IP address, MAC address, gateway address, etc.
|
||||
is set here! */
|
||||
const unsigned char const ucDataGAR[] = { 172, 25, 218, 3 }; /* Gateway address. */
|
||||
const unsigned char const ucDataMSR[] = { 255, 255, 255, 0 }; /* Subnet mask. */
|
||||
const unsigned char const ucDataSIPR[] = { 172, 25, 218, 201 };/* IP address. */
|
||||
const unsigned char const ucDataSHAR[] = { 00, 23, 30, 41, 15, 26 }; /* MAC address - DO NOT USE THIS ON A PUBLIC NETWORK! */
|
||||
|
||||
/* Other fixed messages. */
|
||||
const unsigned char const ucDataReset[] = { tcpRESET_CMD };
|
||||
const unsigned char const ucDataInit[] = { tcpSYS_INIT_CMD };
|
||||
const unsigned char const ucDataProtocol[] = { tcpSOCK_STREAM };
|
||||
const unsigned char const ucDataPort[] = { 0xBA, 0xCC };
|
||||
const unsigned char const ucDataSockInit[] = { tcpSOCK_INIT };
|
||||
const unsigned char const ucDataTxWritePointer[] = { 0x11, 0x22, 0x00, 0x00 };
|
||||
const unsigned char const ucDataTxAckPointer[] = { 0x11, 0x22, 0x00, 0x00 };
|
||||
const unsigned char const ucDataTxReadPointer[] = { 0x11, 0x22, 0x00, 0x00 };
|
||||
const unsigned char const ucDataListen[] = { tcpLISTEN_CMD };
|
||||
const unsigned char const ucDataReceiveCmd[] = { tcpRECEIVE_CMD };
|
||||
const unsigned char const ucDataSetTxBufSize[] = { tcp8K_TX };
|
||||
const unsigned char const ucDataSetRxBufSize[] = { tcp8K_RX };
|
||||
const unsigned char const ucDataSend[] = { tcpSEND_CMD };
|
||||
const unsigned char const ucDataDisconnect[] = { tcpDISCONNECT_CMD };
|
||||
const unsigned char const ucDataEnableISR[] = { i2cCHANNEL_0_ISR_ENABLE };
|
||||
const unsigned char const ucDataDisableISR[] = { i2cCHANNEL_0_ISR_DISABLE };
|
||||
const unsigned char const ucDataClearInterrupt[] = { i2cCLEAR_ALL_INTERRUPTS };
|
||||
|
||||
static xSemaphoreHandle xMessageComplete = NULL;
|
||||
xQueueHandle xTCPISRQueue = NULL;
|
||||
|
||||
/* Dynamically generate and send an html page. */
|
||||
static void prvSendSamplePage( void );
|
||||
|
||||
/* Read a register from the WIZnet device via the i2c interface. */
|
||||
static void prvReadRegister( unsigned char *pucDestination, unsigned short usAddress, unsigned long ulLength );
|
||||
|
||||
/* Send the entire Tx buffer (the Tx buffer within the WIZnet device). */
|
||||
static void prvFlushBuffer( unsigned long ulTxAddress );
|
||||
|
||||
/* Write a string to the WIZnet Tx buffer. */
|
||||
static void prvWriteString( const char * const pucTxBuffer, long lTxLen, unsigned long *pulTxAddress );
|
||||
|
||||
/* Convert a number to a string. */
|
||||
void ultoa( unsigned long ulVal, char *pcBuffer, long lIgnore );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void ultoa( unsigned long ulVal, char *pcBuffer, long lIgnore )
|
||||
{
|
||||
unsigned long lNibble;
|
||||
long lIndex;
|
||||
|
||||
/* Simple routine to convert an unsigned long value into a string in hex
|
||||
format. */
|
||||
|
||||
/* For each nibble in the number we are converting. */
|
||||
for( lIndex = 0; lIndex < ( sizeof( ulVal ) * 2 ); lIndex++ )
|
||||
{
|
||||
/* Take the top four bits of the number. */
|
||||
lNibble = ( ulVal >> 28 );
|
||||
|
||||
/* We are converting it to a hex string, so is the number in the range
|
||||
0-10 or A-F? */
|
||||
if( lNibble < 10 )
|
||||
{
|
||||
pcBuffer[ lIndex ] = '0' + lNibble;
|
||||
}
|
||||
else
|
||||
{
|
||||
lNibble -= 10;
|
||||
pcBuffer[ lIndex ] = 'A' + lNibble;
|
||||
}
|
||||
|
||||
/* Shift off the top nibble so we use the next nibble next time around. */
|
||||
ulVal <<= 4;
|
||||
}
|
||||
|
||||
/* Mark the end of the string with a null terminator. */
|
||||
pcBuffer[ lIndex ] = 0x00;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvReadRegister( unsigned char *pucDestination, unsigned short usAddress, unsigned long ulLength )
|
||||
{
|
||||
unsigned char ucRxBuffer[ tcpMAX_REGISTER_LEN ];
|
||||
|
||||
/* Read a register value from the WIZnet device. */
|
||||
|
||||
/* First write out the address of the register we want to read. */
|
||||
i2cMessage( ucRxBuffer, i2cNO_DATA_REQUIRED, tcpDEVICE_ADDRESS, usAddress, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Then read back from that address. */
|
||||
i2cMessage( ( unsigned char * ) pucDestination, ulLength, tcpDEVICE_ADDRESS, i2cNO_ADDR_REQUIRED, i2cREAD, xMessageComplete, portMAX_DELAY );
|
||||
|
||||
/* I2C messages are queued so use the semaphore to wait for the read to
|
||||
complete - otherwise we will leave this function before the I2C
|
||||
transactions have completed. */
|
||||
xSemaphoreTake( xMessageComplete, tcpLONG_DELAY );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vTCPHardReset( void )
|
||||
{
|
||||
/* Physical reset of the WIZnet device by using the GPIO lines to hold the
|
||||
WIZnet reset lines active for a few milliseconds. */
|
||||
|
||||
/* Make sure the interrupt from the WIZnet is disabled. */
|
||||
VICIntEnClear |= tcpEINT0_VIC_CHANNEL_BIT;
|
||||
|
||||
/* If xMessageComplete is NULL then this is the first time that this
|
||||
function has been called and the queue and semaphore used in this file
|
||||
have not yet been created. */
|
||||
if( xMessageComplete == NULL )
|
||||
{
|
||||
/* Create and obtain the semaphore used when we want to wait for an i2c
|
||||
message to be completed. */
|
||||
vSemaphoreCreateBinary( xMessageComplete );
|
||||
xSemaphoreTake( xMessageComplete, tcpNO_DELAY );
|
||||
|
||||
/* Create the queue used to communicate between the WIZnet and TCP tasks. */
|
||||
xTCPISRQueue = xQueueCreate( tcpISR_QUEUE_LENGTH, tcpISR_QUEUE_ITEM_SIZE );
|
||||
}
|
||||
|
||||
/* Use the GPIO to reset the network hardware. */
|
||||
GPIO_IOCLR = tcpRESET_ACTIVE_LOW;
|
||||
GPIO_IOSET = tcpRESET_ACTIVE_HIGH;
|
||||
|
||||
/* Delay with the network hardware in reset for a short while. */
|
||||
vTaskDelay( tcpRESET_DELAY );
|
||||
|
||||
GPIO_IOCLR = tcpRESET_ACTIVE_HIGH;
|
||||
GPIO_IOSET = tcpRESET_ACTIVE_LOW;
|
||||
|
||||
vTaskDelay( tcpINIT_DELAY );
|
||||
|
||||
/* Setup the EINT0 to interrupt on required events from the WIZnet device.
|
||||
First enable the EINT0 function of the pin. */
|
||||
PCB_PINSEL1 |= tcpENABLE_EINT0_FUNCTION;
|
||||
|
||||
/* We want the TCP comms to wake us from power save. */
|
||||
SCB_EXTWAKE = tcpWAKE_ON_EINT0;
|
||||
|
||||
/* Install the ISR into the VIC - but don't enable it yet! */
|
||||
portENTER_CRITICAL();
|
||||
{
|
||||
extern void ( vEINT0_ISR_Wrapper )( void );
|
||||
|
||||
VICIntSelect &= ~( tcpEINT0_VIC_CHANNEL_BIT );
|
||||
VICVectAddr3 = ( long ) vEINT0_ISR_Wrapper;
|
||||
|
||||
VICVectCntl3 = tcpEINT0_VIC_CHANNEL | tcpEINT0_VIC_ENABLE;
|
||||
}
|
||||
portEXIT_CRITICAL();
|
||||
|
||||
/* Enable interrupts in the WIZnet itself. */
|
||||
i2cMessage( ucDataEnableISR, sizeof( ucDataEnableISR ), tcpDEVICE_ADDRESS, tcpISR_MASK_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
vTaskDelay( tcpLONG_DELAY );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
long lTCPSoftReset( void )
|
||||
{
|
||||
unsigned char ucStatus;
|
||||
extern volatile long lTransactionCompleted;
|
||||
|
||||
/* Send a message to the WIZnet device to tell it set all it's registers
|
||||
back to their default states. Then setup the WIZnet device as required. */
|
||||
|
||||
/* Reset the internal WIZnet registers. */
|
||||
i2cMessage( ucDataReset, sizeof( ucDataReset ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Now we can configure the protocol. Here the MAC address, gateway
|
||||
address, subnet mask and IP address are configured. */
|
||||
i2cMessage( ucDataSHAR, sizeof( ucDataSHAR ), tcpDEVICE_ADDRESS, tcpSOURCE_HA_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataGAR, sizeof( ucDataGAR ), tcpDEVICE_ADDRESS, tcpGATEWAY_ADDR_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataMSR, sizeof( ucDataMSR ), tcpDEVICE_ADDRESS, tcpSUBNET_MASK_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataSIPR, sizeof( ucDataSIPR ), tcpDEVICE_ADDRESS, tpcSOURCE_IP_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Next the memory buffers are configured to give all the WIZnet internal
|
||||
memory over to a single socket. This gives the socket the maximum internal
|
||||
Tx and Rx buffer space. */
|
||||
i2cMessage( ucDataSetTxBufSize, sizeof( ucDataSetTxBufSize ), tcpDEVICE_ADDRESS, tcpTX_MEM_SIZE_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataSetRxBufSize, sizeof( ucDataSetRxBufSize ), tcpDEVICE_ADDRESS, tcpRX_MEM_SIZE_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Send the sys init command so the above parameters take effect. */
|
||||
i2cMessage( ucDataInit, sizeof( ucDataInit ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Seems to like a little wait here. */
|
||||
vTaskDelay( tcpINIT_DELAY );
|
||||
|
||||
/* Read back the status to ensure the system initialised ok. */
|
||||
prvReadRegister( &ucStatus, tcpINTERRUPT_STATUS_REG, tcpSTATUS_READ_LEN );
|
||||
|
||||
/* We should find that the sys init was successful. */
|
||||
if( ucStatus != tcpISR_SYS_INIT )
|
||||
{
|
||||
return ( long ) pdFAIL;
|
||||
}
|
||||
|
||||
/* No i2c errors yet. */
|
||||
portENTER_CRITICAL();
|
||||
lTransactionCompleted = pdTRUE;
|
||||
portEXIT_CRITICAL();
|
||||
|
||||
return ( long ) pdPASS;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
long lTCPCreateSocket( void )
|
||||
{
|
||||
unsigned char ucStatus;
|
||||
|
||||
/* Create and configure a socket. */
|
||||
|
||||
/* Setup and init the socket. Here the port number is set and the socket
|
||||
is initialised. */
|
||||
i2cMessage( ucDataProtocol, sizeof( ucDataProtocol),tcpDEVICE_ADDRESS, tpcSOCKET_OPT_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataPort, sizeof( ucDataPort), tcpDEVICE_ADDRESS, tcpSOURCE_PORT_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
i2cMessage( ucDataSockInit, sizeof( ucDataSockInit),tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, xMessageComplete, portMAX_DELAY );
|
||||
|
||||
/* Wait for the Init command to be sent. */
|
||||
if( !xSemaphoreTake( xMessageComplete, tcpLONG_DELAY ) )
|
||||
{
|
||||
/* For some reason the message was not transmitted within our block
|
||||
period. */
|
||||
return ( long ) pdFAIL;
|
||||
}
|
||||
|
||||
/* Allow the socket to initialise. */
|
||||
vTaskDelay( tcpINIT_DELAY );
|
||||
|
||||
/* Read back the status to ensure the socket initialised ok. */
|
||||
prvReadRegister( &ucStatus, tcpINTERRUPT_STATUS_REG, tcpSTATUS_READ_LEN );
|
||||
|
||||
/* We should find that the socket init was successful. */
|
||||
if( ucStatus != tcpISR_SOCKET_INIT )
|
||||
{
|
||||
return ( long ) pdFAIL;
|
||||
}
|
||||
|
||||
|
||||
/* Setup the Tx pointer registers to indicate that the Tx buffer is empty. */
|
||||
i2cMessage( ucDataTxReadPointer, sizeof( ucDataTxReadPointer ), tcpDEVICE_ADDRESS, tcpTX_READ_POINTER_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
i2cMessage( ucDataTxWritePointer, sizeof( ucDataTxWritePointer ), tcpDEVICE_ADDRESS, tcpTX_WRITE_POINTER_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
i2cMessage( ucDataTxAckPointer, sizeof( ucDataTxAckPointer ), tcpDEVICE_ADDRESS, tcpTX_ACK_POINTER_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
|
||||
return ( long ) pdPASS;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vTCPListen( void )
|
||||
{
|
||||
unsigned char ucISR;
|
||||
|
||||
/* Start a passive listen on the socket. */
|
||||
|
||||
/* Enable interrupts in the WizNet device after ensuring none are
|
||||
currently pending. */
|
||||
while( SCB_EXTINT & tcpCLEAR_EINT0 )
|
||||
{
|
||||
/* The WIZnet device is still asserting and interrupt so tell it to
|
||||
clear. */
|
||||
i2cMessage( ucDataClearInterrupt, sizeof( ucDataClearInterrupt ), tcpDEVICE_ADDRESS, tcpINTERRUPT_REG, i2cWRITE, xMessageComplete, portMAX_DELAY );
|
||||
xSemaphoreTake( xMessageComplete, tcpLONG_DELAY );
|
||||
|
||||
vTaskDelay( 1 );
|
||||
SCB_EXTINT = tcpCLEAR_EINT0;
|
||||
}
|
||||
|
||||
while( xQueueReceive( xTCPISRQueue, &ucISR, tcpNO_DELAY ) )
|
||||
{
|
||||
/* Just clearing the queue used by the ISR routine to tell this task
|
||||
that the WIZnet device needs attention. */
|
||||
}
|
||||
|
||||
/* Now all the pending interrupts have been cleared we can enable the
|
||||
processor interrupts. */
|
||||
VICIntEnable |= tcpEINT0_VIC_CHANNEL_BIT;
|
||||
|
||||
/* Then start listening for incoming connections. */
|
||||
i2cMessage( ucDataListen, sizeof( ucDataListen ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
long lProcessConnection( void )
|
||||
{
|
||||
unsigned char ucISR, ucState, ucLastState = 2, ucShadow;
|
||||
extern volatile long lTransactionCompleted;
|
||||
long lSameStateCount = 0, lDataSent = pdFALSE;
|
||||
unsigned long ulWritePointer, ulAckPointer;
|
||||
|
||||
/* No I2C errors can yet have occurred. */
|
||||
portENTER_CRITICAL();
|
||||
lTransactionCompleted = pdTRUE;
|
||||
portEXIT_CRITICAL();
|
||||
|
||||
/* Keep looping - processing interrupts, until we have completed a
|
||||
transaction. This uses the WIZnet in it's simplest form. The socket
|
||||
accepts a connection - we process the connection - then close the socket.
|
||||
We then go back to reinitialise everything and start again. */
|
||||
while( lTransactionCompleted == pdTRUE )
|
||||
{
|
||||
/* Wait for a message on the queue from the WIZnet ISR. When the
|
||||
WIZnet device asserts an interrupt the ISR simply posts a message
|
||||
onto this queue to wake this task. */
|
||||
if( xQueueReceive( xTCPISRQueue, &ucISR, tcpCONNECTION_WAIT_DELAY ) )
|
||||
{
|
||||
/* The ISR posted a message on this queue to tell us that the
|
||||
WIZnet device asserted an interrupt. The ISR cannot process
|
||||
an I2C message so cannot tell us what caused the interrupt so
|
||||
we have to query the device here. This task is the highest
|
||||
priority in the system so will run immediately following the ISR. */
|
||||
prvReadRegister( &ucISR, tcpINTERRUPT_STATUS_REG, tcpSTATUS_READ_LEN );
|
||||
|
||||
/* Once we have read what caused the ISR we can clear the interrupt
|
||||
in the WIZnet. */
|
||||
i2cMessage( ucDataClearInterrupt, sizeof( ucDataClearInterrupt ), tcpDEVICE_ADDRESS, tcpINTERRUPT_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
|
||||
/* Now we can clear the processor interrupt and re-enable ready for
|
||||
the next. */
|
||||
SCB_EXTINT = tcpCLEAR_EINT0;
|
||||
VICIntEnable |= tcpEINT0_VIC_CHANNEL_BIT;
|
||||
|
||||
/* Process the interrupt ... */
|
||||
|
||||
if( ucISR & tcpISR_ESTABLISHED )
|
||||
{
|
||||
/* A connection has been established - respond by sending
|
||||
a receive command. */
|
||||
i2cMessage( ucDataReceiveCmd, sizeof( ucDataReceiveCmd ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
}
|
||||
|
||||
if( ucISR & tcpISR_RX_COMPLETE )
|
||||
{
|
||||
/* We message has been received. This will be an HTTP get
|
||||
command. We only have one page to send so just send it without
|
||||
regard to what the actual requested page was. */
|
||||
prvSendSamplePage();
|
||||
}
|
||||
|
||||
if( ucISR & tcpISR_TX_COMPLETE )
|
||||
{
|
||||
/* We have a TX complete interrupt - which oddly does not
|
||||
indicate that the message being sent is complete so we cannot
|
||||
yet close the socket. Instead we read the position of the Tx
|
||||
pointer within the WIZnet device so we know how much data it
|
||||
has to send. Later we will read the ack pointer and compare
|
||||
this to the Tx pointer to ascertain whether the transmission
|
||||
has completed. */
|
||||
|
||||
/* First read the shadow register. */
|
||||
prvReadRegister( &ucShadow, tcpTX_WRITE_SHADOW_REG, tcpSHADOW_READ_LEN );
|
||||
|
||||
/* Now a short delay is required. */
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
|
||||
/* Then we can read the real register. */
|
||||
prvReadRegister( ( unsigned char * ) &ulWritePointer, tcpTX_WRITE_POINTER_REG, sizeof( ulWritePointer ) );
|
||||
|
||||
/* We cannot do anything more here but need to remember that
|
||||
this interrupt has occurred. */
|
||||
lDataSent = pdTRUE;
|
||||
}
|
||||
|
||||
if( ucISR & tcpISR_CLOSED )
|
||||
{
|
||||
/* The socket has been closed so we can leave this function. */
|
||||
lTransactionCompleted = pdFALSE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We have not received an interrupt from the WIZnet device for a
|
||||
while. Read the socket status and check that everything is as
|
||||
expected. */
|
||||
prvReadRegister( &ucState, tcpSOCKET_STATE_REG, tcpSTATUS_READ_LEN );
|
||||
|
||||
if( ( ucState == tcpSTATUS_ESTABLISHED ) && ( lDataSent > 0 ) )
|
||||
{
|
||||
/* The socket is established and we have already received a Tx
|
||||
end interrupt. We must therefore be waiting for the Tx buffer
|
||||
inside the WIZnet device to be empty before we can close the
|
||||
socket.
|
||||
|
||||
Read the Ack pointer register to see if it has caught up with
|
||||
the Tx pointer register. First we have to read the shadow
|
||||
register. */
|
||||
prvReadRegister( &ucShadow, tcpTX_ACK_SHADOW_REG, tcpSHADOW_READ_LEN );
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
prvReadRegister( ( unsigned char * ) &ulAckPointer, tcpTX_ACK_POINTER_REG, sizeof( ulWritePointer ) );
|
||||
|
||||
if( ulAckPointer == ulWritePointer )
|
||||
{
|
||||
/* The Ack and write pointer are now equal and we can
|
||||
safely close the socket. */
|
||||
i2cMessage( ucDataDisconnect, sizeof( ucDataDisconnect ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, NULL, portMAX_DELAY );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Keep a count of how many times we encounter the Tx
|
||||
buffer still containing data. */
|
||||
lDataSent++;
|
||||
if( lDataSent > tcpMAX_ATTEMPTS_TO_CHECK_BUFFER )
|
||||
{
|
||||
/* Assume we cannot complete sending the data and
|
||||
therefore cannot safely close the socket. Start over. */
|
||||
vTCPHardReset();
|
||||
lTransactionCompleted = pdFALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
else if( ucState != tcpSTATUS_LISTEN )
|
||||
{
|
||||
/* If we have not yet received a Tx end interrupt we would only
|
||||
ever expect to find the socket still listening for any
|
||||
sustained period. */
|
||||
if( ucState == ucLastState )
|
||||
{
|
||||
lSameStateCount++;
|
||||
if( lSameStateCount > tcpMAX_NON_LISTEN_STAUS_READS )
|
||||
{
|
||||
/* We are persistently in an unexpected state. Assume
|
||||
we cannot safely close the socket and start over. */
|
||||
vTCPHardReset();
|
||||
lTransactionCompleted = pdFALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We are in the listen state so are happy that everything
|
||||
is as expected. */
|
||||
lSameStateCount = 0;
|
||||
}
|
||||
|
||||
/* Remember what state we are in this time around so we can check
|
||||
for a persistence on an unexpected state. */
|
||||
ucLastState = ucState;
|
||||
}
|
||||
}
|
||||
|
||||
/* We are going to reinitialise the WIZnet device so do not want our
|
||||
interrupts from the WIZnet to be processed. */
|
||||
VICIntEnClear |= tcpEINT0_VIC_CHANNEL_BIT;
|
||||
return lTransactionCompleted;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvWriteString( const char * const pucTxBuffer, long lTxLen, unsigned long *pulTxAddress )
|
||||
{
|
||||
unsigned long ulSendAddress;
|
||||
|
||||
/* Send a string to the Tx buffer internal to the WIZnet device. */
|
||||
|
||||
/* Calculate the address to which we are going to write in the buffer. */
|
||||
ulSendAddress = ( *pulTxAddress & tcpSINGLE_SOCKET_ADDR_MASK ) + tcpSINGLE_SOCKET_ADDR_OFFSET;
|
||||
|
||||
/* Send the buffer to the calculated address. Use the semaphore so we
|
||||
can wait until the entire message has been transferred. */
|
||||
i2cMessage( ( unsigned char * ) pucTxBuffer, lTxLen, tcpDEVICE_ADDRESS, ( unsigned short ) ulSendAddress, i2cWRITE, xMessageComplete, portMAX_DELAY );
|
||||
|
||||
/* Wait until the semaphore indicates that the message has been transferred. */
|
||||
if( !xSemaphoreTake( xMessageComplete, tcpLONG_DELAY ) )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
/* Return the new address of the end of the buffer (within the WIZnet
|
||||
device). */
|
||||
*pulTxAddress += ( unsigned long ) lTxLen;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvFlushBuffer( unsigned long ulTxAddress )
|
||||
{
|
||||
unsigned char ucTxBuffer[ tcpMAX_REGISTER_LEN ];
|
||||
|
||||
/* We have written some data to the Tx buffer internal to the WIZnet
|
||||
device. Now we update the Tx pointer inside the WIZnet then send a
|
||||
Send command - which causes the data up to the new Tx pointer to be
|
||||
transmitted. */
|
||||
|
||||
/* Make sure endieness is correct for transmission. */
|
||||
ulTxAddress = htonl( ulTxAddress );
|
||||
|
||||
/* Place the new Tx pointer in the string to be transmitted. */
|
||||
ucTxBuffer[ 0 ] = ( unsigned char ) ( ulTxAddress & 0xff );
|
||||
ulTxAddress >>= 8;
|
||||
ucTxBuffer[ 1 ] = ( unsigned char ) ( ulTxAddress & 0xff );
|
||||
ulTxAddress >>= 8;
|
||||
ucTxBuffer[ 2 ] = ( unsigned char ) ( ulTxAddress & 0xff );
|
||||
ulTxAddress >>= 8;
|
||||
ucTxBuffer[ 3 ] = ( unsigned char ) ( ulTxAddress & 0xff );
|
||||
ulTxAddress >>= 8;
|
||||
|
||||
/* And send it to the WIZnet device. */
|
||||
i2cMessage( ucTxBuffer, sizeof( ulTxAddress ), tcpDEVICE_ADDRESS, tcpTX_WRITE_POINTER_REG, i2cWRITE, xMessageComplete, portMAX_DELAY );
|
||||
|
||||
if( !xSemaphoreTake( xMessageComplete, tcpLONG_DELAY ) )
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
|
||||
/* Transmit! */
|
||||
i2cMessage( ucDataSend, sizeof( ucDataSend ), tcpDEVICE_ADDRESS, tcpCOMMAND_REG, i2cWRITE, xMessageComplete, portMAX_DELAY );
|
||||
|
||||
if( !xSemaphoreTake( xMessageComplete, tcpLONG_DELAY ) )
|
||||
{
|
||||
return;
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvSendSamplePage( void )
|
||||
{
|
||||
extern long lErrorInTask;
|
||||
unsigned long ulTxAddress;
|
||||
unsigned char ucShadow;
|
||||
long lIndex;
|
||||
static unsigned long ulRefreshCount = 0x00;
|
||||
static char cPageBuffer[ tcpBUFFER_LEN ];
|
||||
|
||||
|
||||
/* This function just generates a sample page of HTML which gets
|
||||
sent each time a client attaches to the socket. The page is created
|
||||
from two fixed strings (cSamplePageFirstPart and cSamplePageSecondPart)
|
||||
with a bit of dynamically generated data in the middle. */
|
||||
|
||||
/* We need to know the address to which the html string should be sent
|
||||
in the WIZnet Tx buffer. First read the shadow register. */
|
||||
prvReadRegister( &ucShadow, tcpTX_WRITE_SHADOW_REG, tcpSHADOW_READ_LEN );
|
||||
|
||||
/* Now a short delay is required. */
|
||||
vTaskDelay( tcpSHORT_DELAY );
|
||||
|
||||
/* Now we can read the real pointer value. */
|
||||
prvReadRegister( ( unsigned char * ) &ulTxAddress, tcpTX_WRITE_POINTER_REG, sizeof( ulTxAddress ) );
|
||||
|
||||
/* Make sure endieness is correct. */
|
||||
ulTxAddress = htonl( ulTxAddress );
|
||||
|
||||
/* Send the start of the page. */
|
||||
prvWriteString( cSamplePageFirstPart, strlen( cSamplePageFirstPart ), &ulTxAddress );
|
||||
|
||||
/* Generate a bit of dynamic data and place it in the buffer ready to be
|
||||
transmitted. */
|
||||
strcpy( cPageBuffer, "<BR>Number of ticks since boot = 0x" );
|
||||
lIndex = strlen( cPageBuffer );
|
||||
ultoa( xTaskGetTickCount(), &( cPageBuffer[ lIndex ] ), 0 );
|
||||
strcat( cPageBuffer, "<br>Number of tasks executing = ");
|
||||
lIndex = strlen( cPageBuffer );
|
||||
ultoa( ( unsigned long ) uxTaskGetNumberOfTasks(), &( cPageBuffer[ lIndex ] ), 0 );
|
||||
strcat( cPageBuffer, "<br>IO port 0 state (used by flash tasks) = 0x" );
|
||||
lIndex = strlen( cPageBuffer );
|
||||
ultoa( ( unsigned long ) GPIO0_IOPIN, &( cPageBuffer[ lIndex ] ), 0 );
|
||||
strcat( cPageBuffer, "<br>Refresh = 0x" );
|
||||
lIndex = strlen( cPageBuffer );
|
||||
ultoa( ( unsigned long ) ulRefreshCount, &( cPageBuffer[ lIndex ] ), 0 );
|
||||
|
||||
if( lErrorInTask )
|
||||
{
|
||||
strcat( cPageBuffer, "<p>An error has occurred in at least one task." );
|
||||
}
|
||||
else
|
||||
{
|
||||
strcat( cPageBuffer, "<p>All tasks executing without error." );
|
||||
}
|
||||
|
||||
ulRefreshCount++;
|
||||
|
||||
/* Send the dynamically generated string. */
|
||||
prvWriteString( cPageBuffer, strlen( cPageBuffer ), &ulTxAddress );
|
||||
|
||||
/* Finish the page. */
|
||||
prvWriteString( cSamplePageSecondPart, strlen( cSamplePageSecondPart ), &ulTxAddress );
|
||||
|
||||
/* Tell the WIZnet to send the data we have just written to its Tx buffer. */
|
||||
prvFlushBuffer( ulTxAddress );
|
||||
}
|
||||
|
||||
79
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCP.h
Normal file
79
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCP.h
Normal file
|
|
@ -0,0 +1,79 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
#ifndef TCP_H
|
||||
#define TCP_H
|
||||
|
||||
#define htonl(A) ((((A) & 0xff000000) >> 24) | (((A) & 0x00ff0000) >> 8) | (((A) & 0x0000ff00) << 8) | (((A) & 0x000000ff) << 24))
|
||||
|
||||
void vTCPHardReset( void );
|
||||
long lTCPSoftReset( void );
|
||||
long lTCPCreateSocket( void );
|
||||
long lTCPListen( void );
|
||||
long lProcessConnection( void );
|
||||
void vTCPListen( void );
|
||||
|
||||
#endif
|
||||
129
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCPISR.c
Normal file
129
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/TCPISR.c
Normal file
|
|
@ -0,0 +1,129 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "task.h"
|
||||
#include "queue.h"
|
||||
|
||||
/* Constants required for interrupt management. */
|
||||
#define tcpCLEAR_VIC_INTERRUPT ( 0 )
|
||||
#define tcpEINT0_VIC_CHANNEL_BIT ( ( unsigned long ) 0x4000 )
|
||||
|
||||
/* EINT0 interrupt handler. This processes interrupts from the WIZnet device. */
|
||||
void vEINT0_ISR_Wrapper( void ) __attribute__((naked));
|
||||
|
||||
/* The handler that goes with the EINT0 wrapper. */
|
||||
void vEINT0_ISR_Handler( void );
|
||||
|
||||
/* Variable is required for its address, but does not otherwise get used. */
|
||||
static long lDummyVariable;
|
||||
|
||||
/*
|
||||
* When the WIZnet device asserts an interrupt we send an (empty) message to
|
||||
* the TCP task. This wakes the task so the interrupt can be processed. The
|
||||
* source of the interrupt has to be ascertained by the TCP task as this
|
||||
* requires an I2C transaction which cannot be performed from this ISR.
|
||||
* Note this code predates the introduction of semaphores, a semaphore should
|
||||
* be used in place of the empty queue message.
|
||||
*/
|
||||
void vEINT0_ISR_Handler( void )
|
||||
{
|
||||
extern xQueueHandle xTCPISRQueue;
|
||||
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
|
||||
|
||||
/* Just wake the TCP task so it knows an ISR has occurred. */
|
||||
xQueueSendFromISR( xTCPISRQueue, ( void * ) &lDummyVariable, &xHigherPriorityTaskWoken );
|
||||
|
||||
/* We cannot carry on processing interrupts until the TCP task has
|
||||
processed this one - so for now interrupts are disabled. The TCP task will
|
||||
re-enable it. */
|
||||
VICIntEnClear |= tcpEINT0_VIC_CHANNEL_BIT;
|
||||
|
||||
/* Clear the interrupt bit. */
|
||||
VICVectAddr = tcpCLEAR_VIC_INTERRUPT;
|
||||
|
||||
if( xHigherPriorityTaskWoken )
|
||||
{
|
||||
portYIELD_FROM_ISR();
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vEINT0_ISR_Wrapper( void )
|
||||
{
|
||||
/* Save the context of the interrupted task. */
|
||||
portSAVE_CONTEXT();
|
||||
|
||||
/* The handler must be a separate function from the wrapper to
|
||||
ensure the correct stack frame is set up. */
|
||||
vEINT0_ISR_Handler();
|
||||
|
||||
/* Restore the context of whichever task is going to run next. */
|
||||
portRESTORE_CONTEXT();
|
||||
}
|
||||
|
||||
|
||||
157
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/boot.s
Normal file
157
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/boot.s
Normal file
|
|
@ -0,0 +1,157 @@
|
|||
/* Sample initialization file */
|
||||
|
||||
.extern main
|
||||
.extern exit
|
||||
|
||||
.text
|
||||
.code 32
|
||||
|
||||
|
||||
.align 0
|
||||
|
||||
.extern __bss_beg__
|
||||
.extern __bss_end__
|
||||
.extern __stack_end__
|
||||
.extern __data_beg__
|
||||
.extern __data_end__
|
||||
.extern __data+beg_src__
|
||||
|
||||
.global start
|
||||
.global endless_loop
|
||||
|
||||
/* Stack Sizes */
|
||||
.set UND_STACK_SIZE, 0x00000004
|
||||
.set ABT_STACK_SIZE, 0x00000004
|
||||
.set FIQ_STACK_SIZE, 0x00000004
|
||||
.set IRQ_STACK_SIZE, 0X00000400
|
||||
.set SVC_STACK_SIZE, 0x00000400
|
||||
|
||||
/* Standard definitions of Mode bits and Interrupt (I & F) flags in PSRs */
|
||||
.set MODE_USR, 0x10 /* User Mode */
|
||||
.set MODE_FIQ, 0x11 /* FIQ Mode */
|
||||
.set MODE_IRQ, 0x12 /* IRQ Mode */
|
||||
.set MODE_SVC, 0x13 /* Supervisor Mode */
|
||||
.set MODE_ABT, 0x17 /* Abort Mode */
|
||||
.set MODE_UND, 0x1B /* Undefined Mode */
|
||||
.set MODE_SYS, 0x1F /* System Mode */
|
||||
|
||||
.equ I_BIT, 0x80 /* when I bit is set, IRQ is disabled */
|
||||
.equ F_BIT, 0x40 /* when F bit is set, FIQ is disabled */
|
||||
|
||||
|
||||
start:
|
||||
_start:
|
||||
_mainCRTStartup:
|
||||
|
||||
/* Setup a stack for each mode - note that this only sets up a usable stack
|
||||
for system/user, SWI and IRQ modes. Also each mode is setup with
|
||||
interrupts initially disabled. */
|
||||
ldr r0, .LC6
|
||||
msr CPSR_c, #MODE_UND|I_BIT|F_BIT /* Undefined Instruction Mode */
|
||||
mov sp, r0
|
||||
sub r0, r0, #UND_STACK_SIZE
|
||||
msr CPSR_c, #MODE_ABT|I_BIT|F_BIT /* Abort Mode */
|
||||
mov sp, r0
|
||||
sub r0, r0, #ABT_STACK_SIZE
|
||||
msr CPSR_c, #MODE_FIQ|I_BIT|F_BIT /* FIQ Mode */
|
||||
mov sp, r0
|
||||
sub r0, r0, #FIQ_STACK_SIZE
|
||||
msr CPSR_c, #MODE_IRQ|I_BIT|F_BIT /* IRQ Mode */
|
||||
mov sp, r0
|
||||
sub r0, r0, #IRQ_STACK_SIZE
|
||||
msr CPSR_c, #MODE_SVC|I_BIT|F_BIT /* Supervisor Mode */
|
||||
mov sp, r0
|
||||
sub r0, r0, #SVC_STACK_SIZE
|
||||
msr CPSR_c, #MODE_SYS|I_BIT|F_BIT /* System Mode */
|
||||
mov sp, r0
|
||||
|
||||
/* We want to start in supervisor mode. Operation will switch to system
|
||||
mode when the first task starts. */
|
||||
msr CPSR_c, #MODE_SVC|I_BIT|F_BIT
|
||||
|
||||
/* Clear BSS. */
|
||||
|
||||
mov a2, #0 /* Fill value */
|
||||
mov fp, a2 /* Null frame pointer */
|
||||
mov r7, a2 /* Null frame pointer for Thumb */
|
||||
|
||||
ldr r1, .LC1 /* Start of memory block */
|
||||
ldr r3, .LC2 /* End of memory block */
|
||||
subs r3, r3, r1 /* Length of block */
|
||||
beq .end_clear_loop
|
||||
mov r2, #0
|
||||
|
||||
.clear_loop:
|
||||
strb r2, [r1], #1
|
||||
subs r3, r3, #1
|
||||
bgt .clear_loop
|
||||
|
||||
.end_clear_loop:
|
||||
|
||||
/* Initialise data. */
|
||||
|
||||
ldr r1, .LC3 /* Start of memory block */
|
||||
ldr r2, .LC4 /* End of memory block */
|
||||
ldr r3, .LC5
|
||||
subs r3, r3, r1 /* Length of block */
|
||||
beq .end_set_loop
|
||||
|
||||
.set_loop:
|
||||
ldrb r4, [r2], #1
|
||||
strb r4, [r1], #1
|
||||
subs r3, r3, #1
|
||||
bgt .set_loop
|
||||
|
||||
.end_set_loop:
|
||||
|
||||
mov r0, #0 /* no arguments */
|
||||
mov r1, #0 /* no argv either */
|
||||
|
||||
bl main
|
||||
|
||||
endless_loop:
|
||||
b endless_loop
|
||||
|
||||
|
||||
.align 0
|
||||
|
||||
.LC1:
|
||||
.word __bss_beg__
|
||||
.LC2:
|
||||
.word __bss_end__
|
||||
.LC3:
|
||||
.word __data_beg__
|
||||
.LC4:
|
||||
.word __data_beg_src__
|
||||
.LC5:
|
||||
.word __data_end__
|
||||
.LC6:
|
||||
.word __stack_end__
|
||||
|
||||
|
||||
/* Setup vector table. Note that undf, pabt, dabt, fiq just execute
|
||||
a null loop. */
|
||||
|
||||
.section .startup,"ax"
|
||||
.code 32
|
||||
.align 0
|
||||
|
||||
b _start /* reset - _start */
|
||||
ldr pc, _undf /* undefined - _undf */
|
||||
ldr pc, _swi /* SWI - _swi */
|
||||
ldr pc, _pabt /* program abort - _pabt */
|
||||
ldr pc, _dabt /* data abort - _dabt */
|
||||
nop /* reserved */
|
||||
ldr pc, [pc,#-0xFF0] /* IRQ - read the VIC */
|
||||
ldr pc, _fiq /* FIQ - _fiq */
|
||||
|
||||
_undf: .word __undf /* undefined */
|
||||
_swi: .word vPortYieldProcessor /* SWI */
|
||||
_pabt: .word __pabt /* program abort */
|
||||
_dabt: .word __dabt /* data abort */
|
||||
_fiq: .word __fiq /* FIQ */
|
||||
|
||||
__undf: b . /* undefined */
|
||||
__pabt: b . /* program abort */
|
||||
__dabt: b . /* data abort */
|
||||
__fiq: b . /* FIQ */
|
||||
100
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/html_pages.h
Normal file
100
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/html_pages.h
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
#ifndef HTML_PAGES_H
|
||||
#define HTML_PAGES_H
|
||||
|
||||
/* Simply defines some strings that get sent as HTML pages. */
|
||||
|
||||
const char * const cSamplePageFirstPart =
|
||||
"HTTP/1.0 200 OK\r\n"
|
||||
"Content-type: text/html\r\n"
|
||||
"\r\n"
|
||||
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">\r\n"
|
||||
"<html>\r\n"
|
||||
"<head>\r\n"
|
||||
"<title>FreeRTOS - Live embedded WEB server demo</title>\r\n"
|
||||
"</head>\r\n"
|
||||
"<body BGCOLOR=\"#CCCCFF\">\r\n"
|
||||
"<font face=\"arial\">\r\n"
|
||||
"<small><b><a href=\"http://www.freertos.org\" target=\"_top\">FreeRTOS Homepage</a></b></small><p>"
|
||||
"<H1>Embedded WEB Server<br><small>On the FreeRTOS real time kernel</small></h1>\r\n"
|
||||
"<p>\r\n"
|
||||
"<b>This demo is now using FreeRTOS.org V4.x.x!</b><p>"
|
||||
"This page is being served by the FreeRTOS embedded WEB server running on an ARM7 microcontroller.\r\n<pre>";
|
||||
|
||||
const char * const cSamplePageSecondPart =
|
||||
"</pre>"
|
||||
"If all is well you should see that 18 tasks are executing - 15 standard demo tasks, the embedded WEB server"
|
||||
" task, the error check task and the idle task.<p>"
|
||||
"</font>\r\n"
|
||||
"</body>\r\n"
|
||||
"</html>\r\n";
|
||||
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
243
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2c.c
Normal file
243
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2c.c
Normal file
|
|
@ -0,0 +1,243 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
|
||||
/* Standard includes. */
|
||||
#include <stdlib.h>
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "queue.h"
|
||||
#include "semphr.h"
|
||||
|
||||
/* Application includes. */
|
||||
#include "i2c.h"
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Constants to setup the microcontroller IO. */
|
||||
#define mainSDA_ENABLE ( ( unsigned long ) 0x0040 )
|
||||
#define mainSCL_ENABLE ( ( unsigned long ) 0x0010 )
|
||||
|
||||
/* Bit definitions within the I2CONCLR register. */
|
||||
#define i2cSTA_BIT ( ( unsigned char ) 0x20 )
|
||||
#define i2cSI_BIT ( ( unsigned char ) 0x08 )
|
||||
#define i2cSTO_BIT ( ( unsigned char ) 0x10 )
|
||||
|
||||
/* Constants required to setup the VIC. */
|
||||
#define i2cI2C_VIC_CHANNEL ( ( unsigned long ) 0x0009 )
|
||||
#define i2cI2C_VIC_CHANNEL_BIT ( ( unsigned long ) 0x0200 )
|
||||
#define i2cI2C_VIC_ENABLE ( ( unsigned long ) 0x0020 )
|
||||
|
||||
/* Misc constants. */
|
||||
#define i2cNO_BLOCK ( ( portTickType ) 0 )
|
||||
#define i2cQUEUE_LENGTH ( ( unsigned char ) 5 )
|
||||
#define i2cEXTRA_MESSAGES ( ( unsigned char ) 2 )
|
||||
#define i2cREAD_TX_LEN ( ( unsigned long ) 2 )
|
||||
#define i2cACTIVE_MASTER_MODE ( ( unsigned char ) 0x40 )
|
||||
#define i2cTIMERL ( 200 )
|
||||
#define i2cTIMERH ( 200 )
|
||||
|
||||
/* Array of message definitions. See the header file for more information
|
||||
on the structure members. There are two more places in the queue than as
|
||||
defined by i2cQUEUE_LENGTH. This is to ensure that there is always a free
|
||||
message available - one can be in the process of being transmitted and one
|
||||
can be left free. */
|
||||
static xI2CMessage xTxMessages[ i2cQUEUE_LENGTH + i2cEXTRA_MESSAGES ];
|
||||
|
||||
/* Function in the ARM part of the code used to create the queues. */
|
||||
extern void vI2CISRCreateQueues( unsigned portBASE_TYPE uxQueueLength, xQueueHandle *pxTxMessages, unsigned long **ppulBusFree );
|
||||
|
||||
/* Index to the next free message in the xTxMessages array. */
|
||||
unsigned long ulNextFreeMessage = ( unsigned long ) 0;
|
||||
|
||||
/* Queue of messages that are waiting transmission. */
|
||||
static xQueueHandle xMessagesForTx;
|
||||
|
||||
/* Flag to indicate the state of the I2C ISR state machine. */
|
||||
static unsigned long *pulBusFree;
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
void i2cMessage( const unsigned char * const pucMessage, long lMessageLength, unsigned char ucSlaveAddress, unsigned short usBufferAddress, unsigned long ulDirection, xSemaphoreHandle xMessageCompleteSemaphore, portTickType xBlockTime )
|
||||
{
|
||||
extern volatile xI2CMessage *pxCurrentMessage;
|
||||
xI2CMessage *pxNextFreeMessage;
|
||||
signed portBASE_TYPE xReturn;
|
||||
|
||||
portENTER_CRITICAL();
|
||||
{
|
||||
/* This message is guaranteed to be free as there are two more messages
|
||||
than spaces in the queue allowing for one message to be in process of
|
||||
being transmitted and one to be left free. */
|
||||
pxNextFreeMessage = &( xTxMessages[ ulNextFreeMessage ] );
|
||||
|
||||
/* Fill the message with the data to be sent. */
|
||||
|
||||
/* Pointer to the actual data. Only a pointer is stored (i.e. the
|
||||
actual data is not copied, so the data being pointed to must still
|
||||
be valid when the message eventually gets sent (it may be queued for
|
||||
a while. */
|
||||
pxNextFreeMessage->pucBuffer = ( unsigned char * ) pucMessage;
|
||||
|
||||
/* This is the address of the I2C device we are going to transmit this
|
||||
message to. */
|
||||
pxNextFreeMessage->ucSlaveAddress = ucSlaveAddress | ( unsigned char ) ulDirection;
|
||||
|
||||
/* A semaphore can be used to allow the I2C ISR to indicate that the
|
||||
message has been sent. This can be NULL if you don't want to wait for
|
||||
the message transmission to complete. */
|
||||
pxNextFreeMessage->xMessageCompleteSemaphore = xMessageCompleteSemaphore;
|
||||
|
||||
/* How many bytes are to be sent? */
|
||||
pxNextFreeMessage->lMessageLength = lMessageLength;
|
||||
|
||||
/* The address within the WIZnet device to which the data will be
|
||||
written. This could be the address of a register, or alternatively
|
||||
a location within the WIZnet Tx buffer. */
|
||||
pxNextFreeMessage->ucBufferAddressLowByte = ( unsigned char ) ( usBufferAddress & 0xff );
|
||||
|
||||
/* Second byte of the address. */
|
||||
usBufferAddress >>= 8;
|
||||
pxNextFreeMessage->ucBufferAddressHighByte = ( unsigned char ) ( usBufferAddress & 0xff );
|
||||
|
||||
/* Increment to the next message in the array - with a wrap around check. */
|
||||
ulNextFreeMessage++;
|
||||
if( ulNextFreeMessage >= ( i2cQUEUE_LENGTH + i2cEXTRA_MESSAGES ) )
|
||||
{
|
||||
ulNextFreeMessage = ( unsigned long ) 0;
|
||||
}
|
||||
|
||||
/* Is the I2C interrupt in the middle of transmitting a message? */
|
||||
if( *pulBusFree == ( unsigned long ) pdTRUE )
|
||||
{
|
||||
/* No message is currently being sent or queued to be sent. We
|
||||
can start the ISR sending this message immediately. */
|
||||
pxCurrentMessage = pxNextFreeMessage;
|
||||
|
||||
I2C_I2CONCLR = i2cSI_BIT;
|
||||
I2C_I2CONSET = i2cSTA_BIT;
|
||||
|
||||
*pulBusFree = ( unsigned long ) pdFALSE;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The I2C interrupt routine is mid sending a message. Queue
|
||||
this message ready to be sent. */
|
||||
xReturn = xQueueSend( xMessagesForTx, &pxNextFreeMessage, xBlockTime );
|
||||
|
||||
/* We may have blocked while trying to queue the message. If this
|
||||
was the case then the interrupt would have been enabled and we may
|
||||
now find that the I2C interrupt routine is no longer sending a
|
||||
message. */
|
||||
if( ( *pulBusFree == ( unsigned long ) pdTRUE ) && ( xReturn == pdPASS ) )
|
||||
{
|
||||
/* Get the next message in the queue (this should be the
|
||||
message we just posted) and start off the transmission
|
||||
again. */
|
||||
xQueueReceive( xMessagesForTx, &pxNextFreeMessage, i2cNO_BLOCK );
|
||||
pxCurrentMessage = pxNextFreeMessage;
|
||||
|
||||
I2C_I2CONCLR = i2cSI_BIT;
|
||||
I2C_I2CONSET = i2cSTA_BIT;
|
||||
|
||||
*pulBusFree = ( unsigned long ) pdFALSE;
|
||||
}
|
||||
}
|
||||
}
|
||||
portEXIT_CRITICAL();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void i2cInit( void )
|
||||
{
|
||||
extern void ( vI2C_ISR_Wrapper )( void );
|
||||
|
||||
/* Create the queue used to send messages to the ISR. */
|
||||
vI2CISRCreateQueues( i2cQUEUE_LENGTH, &xMessagesForTx, &pulBusFree );
|
||||
|
||||
/* Configure the I2C hardware. */
|
||||
|
||||
I2C_I2CONCLR = 0xff;
|
||||
|
||||
PCB_PINSEL0 |= mainSDA_ENABLE;
|
||||
PCB_PINSEL0 |= mainSCL_ENABLE;
|
||||
|
||||
I2C_I2SCLL = i2cTIMERL;
|
||||
I2C_I2SCLH = i2cTIMERH;
|
||||
I2C_I2CONSET = i2cACTIVE_MASTER_MODE;
|
||||
|
||||
portENTER_CRITICAL();
|
||||
{
|
||||
/* Setup the VIC for the i2c interrupt. */
|
||||
VICIntSelect &= ~( i2cI2C_VIC_CHANNEL_BIT );
|
||||
VICIntEnable |= i2cI2C_VIC_CHANNEL_BIT;
|
||||
VICVectAddr2 = ( long ) vI2C_ISR_Wrapper;
|
||||
|
||||
VICVectCntl2 = i2cI2C_VIC_CHANNEL | i2cI2C_VIC_ENABLE;
|
||||
}
|
||||
portEXIT_CRITICAL();
|
||||
}
|
||||
|
||||
120
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2c.h
Normal file
120
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2c.h
Normal file
|
|
@ -0,0 +1,120 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
#ifndef I2C_H
|
||||
#define I2C_H
|
||||
|
||||
/* Structure used to capture the I2C message details. The structure is then
|
||||
* queued for processing by the I2C ISR.
|
||||
*/
|
||||
typedef struct AN_I2C_MESSAGE
|
||||
{
|
||||
long lMessageLength; /*< How many bytes of data to send or received - excluding the buffer address. */
|
||||
unsigned char ucSlaveAddress; /*< The slave address of the WIZnet on the I2C bus. */
|
||||
unsigned char ucBufferAddressLowByte; /*< The address within the WIZnet device to which data should be read from / written to. */
|
||||
unsigned char ucBufferAddressHighByte; /*< As above, high byte. */
|
||||
xSemaphoreHandle xMessageCompleteSemaphore; /*< Contains a reference to a semaphore if the application tasks wants notifying when the message has been transacted. */
|
||||
unsigned char *pucBuffer; /*< Pointer to the buffer from where data will be read for transmission, or into which received data will be placed. */
|
||||
} xI2CMessage;
|
||||
|
||||
/* Constants to use as the ulDirection parameter of i2cMessage(). */
|
||||
#define i2cWRITE ( ( unsigned long ) 0 )
|
||||
#define i2cREAD ( ( unsigned long ) 1 )
|
||||
|
||||
/**
|
||||
* Must be called once before any calls to i2cMessage.
|
||||
*/
|
||||
void i2cInit( void );
|
||||
|
||||
/**
|
||||
* Send or receive a message over the I2C bus.
|
||||
*
|
||||
* @param pucMessage The data to be transmitted or the buffer into which
|
||||
* received data will be placed.
|
||||
*
|
||||
* @param lMessageLength The number of bytes to either transmit or receive.
|
||||
*
|
||||
* @param ucSlaveAddress The slave address of the WIZNet device on the I2C bus.
|
||||
*
|
||||
* @param usBufferAddress The address within the WIZNet device to which data is
|
||||
* either written to or read from. The WIZnet has it's
|
||||
* own Rx and Tx buffers.
|
||||
*
|
||||
* @param ulDirection Must be either i2cWRITE or i2cREAD as #defined above.
|
||||
*
|
||||
* @param xMessageCompleteSemaphore
|
||||
* Can be used to pass a semaphore reference if the
|
||||
* calling task want notification of when the message has
|
||||
* completed. Otherwise NULL can be passed.
|
||||
*
|
||||
* @param xBlockTime The time to wait for a space in the message queue to
|
||||
* become available should one not be available
|
||||
* immediately.
|
||||
*/
|
||||
void i2cMessage( const unsigned char * const pucMessage, long lMessageLength, unsigned char ucSlaveAddress, unsigned short usBufferAddress, unsigned long ulDirection, xSemaphoreHandle xMessageCompleteSemaphore, portTickType xBlockTime );
|
||||
|
||||
#endif
|
||||
|
||||
397
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2cISR.c
Normal file
397
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/i2cISR.c
Normal file
|
|
@ -0,0 +1,397 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
|
||||
/* Standard includes. */
|
||||
#include <stdlib.h>
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "task.h"
|
||||
#include "queue.h"
|
||||
#include "semphr.h"
|
||||
|
||||
/* Application includes. */
|
||||
#include "i2c.h"
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Bit definitions within the I2CONCLR register. */
|
||||
#define i2cSTA_BIT ( ( unsigned char ) 0x20 )
|
||||
#define i2cSI_BIT ( ( unsigned char ) 0x08 )
|
||||
#define i2cSTO_BIT ( ( unsigned char ) 0x10 )
|
||||
#define i2cAA_BIT ( ( unsigned char ) 0x04 )
|
||||
|
||||
/* Status codes for the I2STAT register. */
|
||||
#define i2cSTATUS_START_TXED ( 0x08 )
|
||||
#define i2cSTATUS_REP_START_TXED ( 0x10 )
|
||||
#define i2cSTATUS_TX_ADDR_ACKED ( 0x18 )
|
||||
#define i2cSTATUS_DATA_TXED ( 0x28 )
|
||||
#define i2cSTATUS_RX_ADDR_ACKED ( 0x40 )
|
||||
#define i2cSTATUS_DATA_RXED ( 0x50 )
|
||||
#define i2cSTATUS_LAST_BYTE_RXED ( 0x58 )
|
||||
|
||||
/* Constants for operation of the VIC. */
|
||||
#define i2cCLEAR_VIC_INTERRUPT ( 0 )
|
||||
|
||||
/* Misc constants. */
|
||||
#define i2cJUST_ONE_BYTE_TO_RX ( 1 )
|
||||
#define i2cBUFFER_ADDRESS_BYTES ( 2 )
|
||||
|
||||
/* End the current transmission and free the bus. */
|
||||
#define i2cEND_TRANSMISSION( lStatus ) \
|
||||
{ \
|
||||
I2C_I2CONCLR = i2cAA_BIT; \
|
||||
I2C_I2CONSET = i2cSTO_BIT; \
|
||||
eCurrentState = eSentStart; \
|
||||
lTransactionCompleted = lStatus; \
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Valid i2c communication states. */
|
||||
typedef enum
|
||||
{
|
||||
eSentStart, /*<< Last action was the transmission of a start bit. */
|
||||
eSentAddressForWrite, /*<< Last action was the transmission of the slave address we are to write to. */
|
||||
eSentAddressForRead, /*<< Last action was the transmission of the slave address we are to read from. */
|
||||
eSentData, /*<< Last action was the transmission of a data byte. */
|
||||
eReceiveData /*<< We expected data to be received. */
|
||||
} I2C_STATE;
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Points to the message currently being sent. */
|
||||
volatile xI2CMessage *pxCurrentMessage = NULL;
|
||||
|
||||
/* The queue of messages waiting to be transmitted. */
|
||||
static xQueueHandle xMessagesForTx;
|
||||
|
||||
/* Flag used to indicate whether or not the ISR is amid sending a message. */
|
||||
unsigned long ulBusFree = ( unsigned long ) pdTRUE;
|
||||
|
||||
/* Setting this to true will cause the TCP task to think a message is
|
||||
complete and thus restart. It can therefore be used under error states
|
||||
to force a restart. */
|
||||
volatile long lTransactionCompleted = pdTRUE;
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vI2CISRCreateQueues( unsigned portBASE_TYPE uxQueueLength, xQueueHandle *pxTxMessages, unsigned long **ppulBusFree )
|
||||
{
|
||||
/* Create the queues used to hold Rx and Tx characters. */
|
||||
xMessagesForTx = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( xI2CMessage * ) );
|
||||
|
||||
/* Pass back a reference to the queue and bus free flag so the I2C API file
|
||||
can post messages. */
|
||||
*pxTxMessages = xMessagesForTx;
|
||||
*ppulBusFree = &ulBusFree;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* The ISR entry point. */
|
||||
void vI2C_ISR_Wrapper( void ) __attribute__ (( naked ));
|
||||
|
||||
/* The ISR function to perform the actual work. This must be a separate
|
||||
function from the wrapper to ensure the correct stack frame is set up. */
|
||||
void vI2C_ISR_Handler( void );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vI2C_ISR_Wrapper( void )
|
||||
{
|
||||
/* Save the context of the interrupted task. */
|
||||
portSAVE_CONTEXT();
|
||||
|
||||
/* Call the handler to perform the actual work. This must be a
|
||||
separate function to ensure the correct stack frame is set up. */
|
||||
vI2C_ISR_Handler();
|
||||
|
||||
/* Restore the context of whichever task is going to run next. */
|
||||
portRESTORE_CONTEXT();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vI2C_ISR_Handler( void )
|
||||
{
|
||||
/* Holds the current transmission state. */
|
||||
static I2C_STATE eCurrentState = eSentStart;
|
||||
static long lMessageIndex = -i2cBUFFER_ADDRESS_BYTES; /* There are two address bytes to send prior to the data. */
|
||||
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
|
||||
long lBytesLeft;
|
||||
|
||||
/* The action taken for this interrupt depends on our current state. */
|
||||
switch( eCurrentState )
|
||||
{
|
||||
case eSentStart :
|
||||
|
||||
/* We sent a start bit, if it was successful we can
|
||||
go on to send the slave address. */
|
||||
if( ( I2C_I2STAT == i2cSTATUS_START_TXED ) || ( I2C_I2STAT == i2cSTATUS_REP_START_TXED ) )
|
||||
{
|
||||
/* Send the slave address. */
|
||||
I2C_I2DAT = pxCurrentMessage->ucSlaveAddress;
|
||||
|
||||
if( pxCurrentMessage->ucSlaveAddress & i2cREAD )
|
||||
{
|
||||
/* We are then going to read bytes back from the
|
||||
slave. */
|
||||
eCurrentState = eSentAddressForRead;
|
||||
|
||||
/* Initialise the buffer index so the first byte goes
|
||||
into the first buffer position. */
|
||||
lMessageIndex = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We are then going to write some data to the slave. */
|
||||
eCurrentState = eSentAddressForWrite;
|
||||
|
||||
/* When writing bytes we first have to send the two
|
||||
byte buffer address so lMessageIndex is set negative,
|
||||
when it reaches 0 it is time to send the actual data. */
|
||||
lMessageIndex = -i2cBUFFER_ADDRESS_BYTES;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Could not send the start bit so give up. */
|
||||
i2cEND_TRANSMISSION( pdFAIL );
|
||||
}
|
||||
|
||||
I2C_I2CONCLR = i2cSTA_BIT;
|
||||
|
||||
break;
|
||||
|
||||
case eSentAddressForWrite :
|
||||
|
||||
/* We sent the address of the slave we are going to write to.
|
||||
If this was acknowledged we can go on to send the data. */
|
||||
if( I2C_I2STAT == i2cSTATUS_TX_ADDR_ACKED )
|
||||
{
|
||||
/* Start the first byte transmitting which is the
|
||||
first byte of the buffer address to which the data will
|
||||
be sent. */
|
||||
I2C_I2DAT = pxCurrentMessage->ucBufferAddressHighByte;
|
||||
eCurrentState = eSentData;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Address was not acknowledged so give up. */
|
||||
i2cEND_TRANSMISSION( pdFAIL );
|
||||
}
|
||||
break;
|
||||
|
||||
case eSentAddressForRead :
|
||||
|
||||
/* We sent the address of the slave we are going to read from.
|
||||
If this was acknowledged we can go on to read the data. */
|
||||
if( I2C_I2STAT == i2cSTATUS_RX_ADDR_ACKED )
|
||||
{
|
||||
eCurrentState = eReceiveData;
|
||||
if( pxCurrentMessage->lMessageLength > i2cJUST_ONE_BYTE_TO_RX )
|
||||
{
|
||||
/* Don't ack the last byte of the message. */
|
||||
I2C_I2CONSET = i2cAA_BIT;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Something unexpected happened - give up. */
|
||||
i2cEND_TRANSMISSION( pdFAIL );
|
||||
}
|
||||
break;
|
||||
|
||||
case eReceiveData :
|
||||
|
||||
/* We have just received a byte from the slave. */
|
||||
if( ( I2C_I2STAT == i2cSTATUS_DATA_RXED ) || ( I2C_I2STAT == i2cSTATUS_LAST_BYTE_RXED ) )
|
||||
{
|
||||
/* Buffer the byte just received then increment the index
|
||||
so it points to the next free space. */
|
||||
pxCurrentMessage->pucBuffer[ lMessageIndex ] = I2C_I2DAT;
|
||||
lMessageIndex++;
|
||||
|
||||
/* How many more bytes are we expecting to receive? */
|
||||
lBytesLeft = pxCurrentMessage->lMessageLength - lMessageIndex;
|
||||
if( lBytesLeft == ( unsigned long ) 0 )
|
||||
{
|
||||
/* This was the last byte in the message. */
|
||||
i2cEND_TRANSMISSION( pdPASS );
|
||||
|
||||
/* If xMessageCompleteSemaphore is not null then there
|
||||
is a task waiting for this message to complete and we
|
||||
must 'give' the semaphore so the task is woken.*/
|
||||
if( pxCurrentMessage->xMessageCompleteSemaphore )
|
||||
{
|
||||
xSemaphoreGiveFromISR( pxCurrentMessage->xMessageCompleteSemaphore, &xHigherPriorityTaskWoken );
|
||||
}
|
||||
|
||||
/* Are there any other messages to transact? */
|
||||
if( xQueueReceiveFromISR( xMessagesForTx, &pxCurrentMessage, &xHigherPriorityTaskWoken ) == pdTRUE )
|
||||
{
|
||||
/* Start the next message - which was
|
||||
retrieved from the queue. */
|
||||
I2C_I2CONSET = i2cSTA_BIT;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* No more messages were found to be waiting for
|
||||
transaction so the bus is free. */
|
||||
ulBusFree = ( unsigned long ) pdTRUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* There are more bytes to receive but don't ack the
|
||||
last byte. */
|
||||
if( lBytesLeft <= i2cJUST_ONE_BYTE_TO_RX )
|
||||
{
|
||||
I2C_I2CONCLR = i2cAA_BIT;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Something unexpected happened - give up. */
|
||||
i2cEND_TRANSMISSION( pdFAIL );
|
||||
}
|
||||
|
||||
break;
|
||||
|
||||
case eSentData :
|
||||
|
||||
/* We sent a data byte, if successful send the next byte in
|
||||
the message. */
|
||||
if( I2C_I2STAT == i2cSTATUS_DATA_TXED )
|
||||
{
|
||||
/* Index to the next byte to send. */
|
||||
lMessageIndex++;
|
||||
if( lMessageIndex < 0 )
|
||||
{
|
||||
/* lMessage index is still negative so we have so far
|
||||
only sent the first byte of the buffer address. Send
|
||||
the second byte now, then initialise the buffer index
|
||||
to zero so the next byte sent comes from the actual
|
||||
data buffer. */
|
||||
I2C_I2DAT = pxCurrentMessage->ucBufferAddressLowByte;
|
||||
}
|
||||
else if( lMessageIndex < pxCurrentMessage->lMessageLength )
|
||||
{
|
||||
/* Simply send the next byte in the tx buffer. */
|
||||
I2C_I2DAT = pxCurrentMessage->pucBuffer[ lMessageIndex ];
|
||||
}
|
||||
else
|
||||
{
|
||||
/* No more bytes in this message to be send. Finished
|
||||
sending message - send a stop bit. */
|
||||
i2cEND_TRANSMISSION( pdPASS );
|
||||
|
||||
/* If xMessageCompleteSemaphore is not null then there
|
||||
is a task waiting for this message to be sent and the
|
||||
semaphore must be 'given' to wake the task. */
|
||||
if( pxCurrentMessage->xMessageCompleteSemaphore )
|
||||
{
|
||||
xSemaphoreGiveFromISR( pxCurrentMessage->xMessageCompleteSemaphore, &xHigherPriorityTaskWoken );
|
||||
}
|
||||
|
||||
/* Are there any other messages to transact? */
|
||||
if( xQueueReceiveFromISR( xMessagesForTx, &pxCurrentMessage, &xHigherPriorityTaskWoken ) == pdTRUE )
|
||||
{
|
||||
/* Start the next message from the Tx queue. */
|
||||
I2C_I2CONSET = i2cSTA_BIT;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* No more message were queues for transaction so
|
||||
the bus is free. */
|
||||
ulBusFree = ( unsigned long ) pdTRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Something unexpected happened, give up. */
|
||||
i2cEND_TRANSMISSION( pdFAIL );
|
||||
}
|
||||
break;
|
||||
|
||||
default :
|
||||
|
||||
/* Should never get here. */
|
||||
eCurrentState = eSentStart;
|
||||
break;
|
||||
}
|
||||
|
||||
/* Clear the interrupt. */
|
||||
I2C_I2CONCLR = i2cSI_BIT;
|
||||
VICVectAddr = i2cCLEAR_VIC_INTERRUPT;
|
||||
|
||||
if( xHigherPriorityTaskWoken )
|
||||
{
|
||||
portYIELD_FROM_ISR();
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
49
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/lpc2106-rom.ld
Normal file
49
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/lpc2106-rom.ld
Normal file
|
|
@ -0,0 +1,49 @@
|
|||
MEMORY
|
||||
{
|
||||
flash : ORIGIN = 0, LENGTH = 120K
|
||||
ram : ORIGIN = 0x40000000, LENGTH = 64K
|
||||
}
|
||||
|
||||
__stack_end__ = 0x40000000 + 64K - 4;
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
. = 0;
|
||||
startup : { *(.startup)} >flash
|
||||
|
||||
prog :
|
||||
{
|
||||
*(.text)
|
||||
*(.rodata)
|
||||
*(.rodata*)
|
||||
*(.glue_7)
|
||||
*(.glue_7t)
|
||||
} >flash
|
||||
|
||||
__end_of_text__ = .;
|
||||
|
||||
.data :
|
||||
{
|
||||
__data_beg__ = .;
|
||||
__data_beg_src__ = __end_of_text__;
|
||||
*(.data)
|
||||
__data_end__ = .;
|
||||
} >ram AT>flash
|
||||
|
||||
.bss :
|
||||
{
|
||||
__bss_beg__ = .;
|
||||
*(.bss)
|
||||
} >ram
|
||||
|
||||
/* Align here to ensure that the .bss section occupies space up to
|
||||
_end. Align after .bss to ensure correct alignment even if the
|
||||
.bss section disappears because there are no input sections. */
|
||||
. = ALIGN(32 / 8);
|
||||
}
|
||||
. = ALIGN(32 / 8);
|
||||
_end = .;
|
||||
_bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
|
||||
PROVIDE (end = .);
|
||||
|
||||
|
||||
321
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/lpc210x.h
Normal file
321
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/lpc210x.h
Normal file
|
|
@ -0,0 +1,321 @@
|
|||
#ifndef lpc210x_h
|
||||
#define lpc210x_h
|
||||
/*******************************************************************************
|
||||
lpc210x.h - Register defs for Philips LPC210X: LPC2104, LPC2105 and LPC2106
|
||||
|
||||
|
||||
THE SOFTWARE IS DELIVERED "AS IS" WITHOUT WARRANTY OR CONDITION OF ANY KIND,
|
||||
EITHER EXPRESS, IMPLIED OR STATUTORY. THIS INCLUDES WITHOUT LIMITATION ANY
|
||||
WARRANTY OR CONDITION WITH RESPECT TO MERCHANTABILITY OR FITNESS FOR ANY
|
||||
PARTICULAR PURPOSE, OR AGAINST THE INFRINGEMENTS OF INTELLECTUAL PROPERTY RIGHTS
|
||||
OF OTHERS.
|
||||
|
||||
This file may be freely used for commercial and non-commercial applications,
|
||||
including being redistributed with any tools.
|
||||
|
||||
If you find a problem with the file, please report it so that it can be fixed.
|
||||
|
||||
Created by Sten Larsson (sten_larsson at yahoo com)
|
||||
|
||||
Edited by Richard Barry.
|
||||
*******************************************************************************/
|
||||
|
||||
#define REG8 (volatile unsigned char*)
|
||||
#define REG16 (volatile unsigned short*)
|
||||
#define REG32 (volatile unsigned int*)
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## MISC
|
||||
##############################################################################*/
|
||||
|
||||
/* Constants for data to put in IRQ/FIQ Exception Vectors */
|
||||
#define VECTDATA_IRQ 0xE51FFFF0 /* LDR PC,[PC,#-0xFF0] */
|
||||
#define VECTDATA_FIQ /* __TODO */
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## VECTORED INTERRUPT CONTROLLER
|
||||
##############################################################################*/
|
||||
|
||||
#define VICIRQStatus (*(REG32 (0xFFFFF000)))
|
||||
#define VICFIQStatus (*(REG32 (0xFFFFF004)))
|
||||
#define VICRawIntr (*(REG32 (0xFFFFF008)))
|
||||
#define VICIntSelect (*(REG32 (0xFFFFF00C)))
|
||||
#define VICIntEnable (*(REG32 (0xFFFFF010)))
|
||||
#define VICIntEnClear (*(REG32 (0xFFFFF014)))
|
||||
#define VICSoftInt (*(REG32 (0xFFFFF018)))
|
||||
#define VICSoftIntClear (*(REG32 (0xFFFFF01C)))
|
||||
#define VICProtection (*(REG32 (0xFFFFF020)))
|
||||
#define VICVectAddr (*(REG32 (0xFFFFF030)))
|
||||
#define VICDefVectAddr (*(REG32 (0xFFFFF034)))
|
||||
|
||||
#define VICVectAddr0 (*(REG32 (0xFFFFF100)))
|
||||
#define VICVectAddr1 (*(REG32 (0xFFFFF104)))
|
||||
#define VICVectAddr2 (*(REG32 (0xFFFFF108)))
|
||||
#define VICVectAddr3 (*(REG32 (0xFFFFF10C)))
|
||||
#define VICVectAddr4 (*(REG32 (0xFFFFF110)))
|
||||
#define VICVectAddr5 (*(REG32 (0xFFFFF114)))
|
||||
#define VICVectAddr6 (*(REG32 (0xFFFFF118)))
|
||||
#define VICVectAddr7 (*(REG32 (0xFFFFF11C)))
|
||||
#define VICVectAddr8 (*(REG32 (0xFFFFF120)))
|
||||
#define VICVectAddr9 (*(REG32 (0xFFFFF124)))
|
||||
#define VICVectAddr10 (*(REG32 (0xFFFFF128)))
|
||||
#define VICVectAddr11 (*(REG32 (0xFFFFF12C)))
|
||||
#define VICVectAddr12 (*(REG32 (0xFFFFF130)))
|
||||
#define VICVectAddr13 (*(REG32 (0xFFFFF134)))
|
||||
#define VICVectAddr14 (*(REG32 (0xFFFFF138)))
|
||||
#define VICVectAddr15 (*(REG32 (0xFFFFF13C)))
|
||||
|
||||
#define VICVectCntl0 (*(REG32 (0xFFFFF200)))
|
||||
#define VICVectCntl1 (*(REG32 (0xFFFFF204)))
|
||||
#define VICVectCntl2 (*(REG32 (0xFFFFF208)))
|
||||
#define VICVectCntl3 (*(REG32 (0xFFFFF20C)))
|
||||
#define VICVectCntl4 (*(REG32 (0xFFFFF210)))
|
||||
#define VICVectCntl5 (*(REG32 (0xFFFFF214)))
|
||||
#define VICVectCntl6 (*(REG32 (0xFFFFF218)))
|
||||
#define VICVectCntl7 (*(REG32 (0xFFFFF21C)))
|
||||
#define VICVectCntl8 (*(REG32 (0xFFFFF220)))
|
||||
#define VICVectCntl9 (*(REG32 (0xFFFFF224)))
|
||||
#define VICVectCntl10 (*(REG32 (0xFFFFF228)))
|
||||
#define VICVectCntl11 (*(REG32 (0xFFFFF22C)))
|
||||
#define VICVectCntl12 (*(REG32 (0xFFFFF230)))
|
||||
#define VICVectCntl13 (*(REG32 (0xFFFFF234)))
|
||||
#define VICVectCntl14 (*(REG32 (0xFFFFF238)))
|
||||
#define VICVectCntl15 (*(REG32 (0xFFFFF23C)))
|
||||
|
||||
#define VICITCR (*(REG32 (0xFFFFF300)))
|
||||
#define VICITIP1 (*(REG32 (0xFFFFF304)))
|
||||
#define VICITIP2 (*(REG32 (0xFFFFF308)))
|
||||
#define VICITOP1 (*(REG32 (0xFFFFF30C)))
|
||||
#define VICITOP2 (*(REG32 (0xFFFFF310)))
|
||||
#define VICPeriphID0 (*(REG32 (0xFFFFFFE0)))
|
||||
#define VICPeriphID1 (*(REG32 (0xFFFFFFE4)))
|
||||
#define VICPeriphID2 (*(REG32 (0xFFFFFFE8)))
|
||||
#define VICPeriphID3 (*(REG32 (0xFFFFFFEC)))
|
||||
|
||||
#define VICIntEnClr VICIntEnClear
|
||||
#define VICSoftIntClr VICSoftIntClear
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## PCB - Pin Connect Block
|
||||
##############################################################################*/
|
||||
|
||||
#define PCB_PINSEL0 (*(REG32 (0xE002C000)))
|
||||
#define PCB_PINSEL1 (*(REG32 (0xE002C004)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## GPIO - General Purpose I/O
|
||||
##############################################################################*/
|
||||
|
||||
#define GPIO_IOPIN (*(REG32 (0xE0028000))) /* ALTERNATE NAME GPIO = GPIO0 */
|
||||
#define GPIO_IOSET (*(REG32 (0xE0028004)))
|
||||
#define GPIO_IODIR (*(REG32 (0xE0028008)))
|
||||
#define GPIO_IOCLR (*(REG32 (0xE002800C)))
|
||||
|
||||
#define GPIO0_IOPIN (*(REG32 (0xE0028000))) /* ALTERNATE NAME GPIO = GPIO0 */
|
||||
#define GPIO0_IOSET (*(REG32 (0xE0028004)))
|
||||
#define GPIO0_IODIR (*(REG32 (0xE0028008)))
|
||||
#define GPIO0_IOCLR (*(REG32 (0xE002800C)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## UART0 / UART1
|
||||
##############################################################################*/
|
||||
|
||||
/* ---- UART 0 --------------------------------------------- */
|
||||
#define UART0_RBR (*(REG32 (0xE000C000)))
|
||||
#define UART0_THR (*(REG32 (0xE000C000)))
|
||||
#define UART0_IER (*(REG32 (0xE000C004)))
|
||||
#define UART0_IIR (*(REG32 (0xE000C008)))
|
||||
#define UART0_FCR (*(REG32 (0xE000C008)))
|
||||
#define UART0_LCR (*(REG32 (0xE000C00C)))
|
||||
#define UART0_LSR (*(REG32 (0xE000C014)))
|
||||
#define UART0_SCR (*(REG32 (0xE000C01C)))
|
||||
#define UART0_DLL (*(REG32 (0xE000C000)))
|
||||
#define UART0_DLM (*(REG32 (0xE000C004)))
|
||||
|
||||
/* ---- UART 1 --------------------------------------------- */
|
||||
#define UART1_RBR (*(REG32 (0xE0010000)))
|
||||
#define UART1_THR (*(REG32 (0xE0010000)))
|
||||
#define UART1_IER (*(REG32 (0xE0010004)))
|
||||
#define UART1_IIR (*(REG32 (0xE0010008)))
|
||||
#define UART1_FCR (*(REG32 (0xE0010008)))
|
||||
#define UART1_LCR (*(REG32 (0xE001000C)))
|
||||
#define UART1_LSR (*(REG32 (0xE0010014)))
|
||||
#define UART1_SCR (*(REG32 (0xE001001C)))
|
||||
#define UART1_DLL (*(REG32 (0xE0010000)))
|
||||
#define UART1_DLM (*(REG32 (0xE0010004)))
|
||||
#define UART1_MCR (*(REG32 (0xE0010010)))
|
||||
#define UART1_MSR (*(REG32 (0xE0010018)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## I2C
|
||||
##############################################################################*/
|
||||
|
||||
#define I2C_I2CONSET (*(REG32 (0xE001C000)))
|
||||
#define I2C_I2STAT (*(REG32 (0xE001C004)))
|
||||
#define I2C_I2DAT (*(REG32 (0xE001C008)))
|
||||
#define I2C_I2ADR (*(REG32 (0xE001C00C)))
|
||||
#define I2C_I2SCLH (*(REG32 (0xE001C010)))
|
||||
#define I2C_I2SCLL (*(REG32 (0xE001C014)))
|
||||
#define I2C_I2CONCLR (*(REG32 (0xE001C018)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## SPI - Serial Peripheral Interface
|
||||
##############################################################################*/
|
||||
|
||||
#define SPI_SPCR (*(REG32 (0xE0020000)))
|
||||
#define SPI_SPSR (*(REG32 (0xE0020004)))
|
||||
#define SPI_SPDR (*(REG32 (0xE0020008)))
|
||||
#define SPI_SPCCR (*(REG32 (0xE002000C)))
|
||||
#define SPI_SPTCR (*(REG32 (0xE0020010)))
|
||||
#define SPI_SPTSR (*(REG32 (0xE0020014)))
|
||||
#define SPI_SPTOR (*(REG32 (0xE0020018)))
|
||||
#define SPI_SPINT (*(REG32 (0xE002001C)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## Timer 0 and Timer 1
|
||||
##############################################################################*/
|
||||
|
||||
/* ---- Timer 0 -------------------------------------------- */
|
||||
#define T0_IR (*(REG32 (0xE0004000)))
|
||||
#define T0_TCR (*(REG32 (0xE0004004)))
|
||||
#define T0_TC (*(REG32 (0xE0004008)))
|
||||
#define T0_PR (*(REG32 (0xE000400C)))
|
||||
#define T0_PC (*(REG32 (0xE0004010)))
|
||||
#define T0_MCR (*(REG32 (0xE0004014)))
|
||||
#define T0_MR0 (*(REG32 (0xE0004018)))
|
||||
#define T0_MR1 (*(REG32 (0xE000401C)))
|
||||
#define T0_MR2 (*(REG32 (0xE0004020)))
|
||||
#define T0_MR3 (*(REG32 (0xE0004024)))
|
||||
#define T0_CCR (*(REG32 (0xE0004028)))
|
||||
#define T0_CR0 (*(REG32 (0xE000402C)))
|
||||
#define T0_CR1 (*(REG32 (0xE0004030)))
|
||||
#define T0_CR2 (*(REG32 (0xE0004034)))
|
||||
#define T0_CR3 (*(REG32 (0xE0004038)))
|
||||
#define T0_EMR (*(REG32 (0xE000403C)))
|
||||
|
||||
/* ---- Timer 1 -------------------------------------------- */
|
||||
#define T1_IR (*(REG32 (0xE0008000)))
|
||||
#define T1_TCR (*(REG32 (0xE0008004)))
|
||||
#define T1_TC (*(REG32 (0xE0008008)))
|
||||
#define T1_PR (*(REG32 (0xE000800C)))
|
||||
#define T1_PC (*(REG32 (0xE0008010)))
|
||||
#define T1_MCR (*(REG32 (0xE0008014)))
|
||||
#define T1_MR0 (*(REG32 (0xE0008018)))
|
||||
#define T1_MR1 (*(REG32 (0xE000801C)))
|
||||
#define T1_MR2 (*(REG32 (0xE0008020)))
|
||||
#define T1_MR3 (*(REG32 (0xE0008024)))
|
||||
#define T1_CCR (*(REG32 (0xE0008028)))
|
||||
#define T1_CR0 (*(REG32 (0xE000802C)))
|
||||
#define T1_CR1 (*(REG32 (0xE0008030)))
|
||||
#define T1_CR2 (*(REG32 (0xE0008034)))
|
||||
#define T1_CR3 (*(REG32 (0xE0008038)))
|
||||
#define T1_EMR (*(REG32 (0xE000803C)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## PWM
|
||||
##############################################################################*/
|
||||
|
||||
#define PWM_IR (*(REG32 (0xE0014000)))
|
||||
#define PWM_TCR (*(REG32 (0xE0014004)))
|
||||
#define PWM_TC (*(REG32 (0xE0014008)))
|
||||
#define PWM_PR (*(REG32 (0xE001400C)))
|
||||
#define PWM_PC (*(REG32 (0xE0014010)))
|
||||
#define PWM_MCR (*(REG32 (0xE0014014)))
|
||||
#define PWM_MR0 (*(REG32 (0xE0014018)))
|
||||
#define PWM_MR1 (*(REG32 (0xE001401C)))
|
||||
#define PWM_MR2 (*(REG32 (0xE0014020)))
|
||||
#define PWM_MR3 (*(REG32 (0xE0014024)))
|
||||
#define PWM_MR4 (*(REG32 (0xE0014040)))
|
||||
#define PWM_MR5 (*(REG32 (0xE0014044)))
|
||||
#define PWM_MR6 (*(REG32 (0xE0014048)))
|
||||
#define PWM_EMR (*(REG32 (0xE001403C)))
|
||||
#define PWM_PCR (*(REG32 (0xE001404C)))
|
||||
#define PWM_LER (*(REG32 (0xE0014050)))
|
||||
#define PWM_CCR (*(REG32 (0xE0014028)))
|
||||
#define PWM_CR0 (*(REG32 (0xE001402C)))
|
||||
#define PWM_CR1 (*(REG32 (0xE0014030)))
|
||||
#define PWM_CR2 (*(REG32 (0xE0014034)))
|
||||
#define PWM_CR3 (*(REG32 (0xE0014038)))
|
||||
|
||||
/*##############################################################################
|
||||
## RTC
|
||||
##############################################################################*/
|
||||
|
||||
/* ---- RTC: Miscellaneous Register Group ------------------ */
|
||||
#define RTC_ILR (*(REG32 (0xE0024000)))
|
||||
#define RTC_CTC (*(REG32 (0xE0024004)))
|
||||
#define RTC_CCR (*(REG32 (0xE0024008)))
|
||||
#define RTC_CIIR (*(REG32 (0xE002400C)))
|
||||
#define RTC_AMR (*(REG32 (0xE0024010)))
|
||||
#define RTC_CTIME0 (*(REG32 (0xE0024014)))
|
||||
#define RTC_CTIME1 (*(REG32 (0xE0024018)))
|
||||
#define RTC_CTIME2 (*(REG32 (0xE002401C)))
|
||||
|
||||
/* ---- RTC: Timer Control Group --------------------------- */
|
||||
#define RTC_SEC (*(REG32 (0xE0024020)))
|
||||
#define RTC_MIN (*(REG32 (0xE0024024)))
|
||||
#define RTC_HOUR (*(REG32 (0xE0024028)))
|
||||
#define RTC_DOM (*(REG32 (0xE002402C)))
|
||||
#define RTC_DOW (*(REG32 (0xE0024030)))
|
||||
#define RTC_DOY (*(REG32 (0xE0024034)))
|
||||
#define RTC_MONTH (*(REG32 (0xE0024038)))
|
||||
#define RTC_YEAR (*(REG32 (0xE002403C)))
|
||||
|
||||
/* ---- RTC: Alarm Control Group --------------------------- */
|
||||
#define RTC_ALSEC (*(REG32 (0xE0024060)))
|
||||
#define RTC_ALMIN (*(REG32 (0xE0024064)))
|
||||
#define RTC_ALHOUR (*(REG32 (0xE0024068)))
|
||||
#define RTC_ALDOM (*(REG32 (0xE002406C)))
|
||||
#define RTC_ALDOW (*(REG32 (0xE0024070)))
|
||||
#define RTC_ALDOY (*(REG32 (0xE0024074)))
|
||||
#define RTC_ALMON (*(REG32 (0xE0024078)))
|
||||
#define RTC_ALYEAR (*(REG32 (0xE002407C)))
|
||||
|
||||
/* ---- RTC: Reference Clock Divider Group ----------------- */
|
||||
#define RTC_PREINT (*(REG32 (0xE0024080)))
|
||||
#define RTC_PREFRAC (*(REG32 (0xE0024084)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## WD - Watchdog
|
||||
##############################################################################*/
|
||||
|
||||
#define WD_WDMOD (*(REG32 (0xE0000000)))
|
||||
#define WD_WDTC (*(REG32 (0xE0000004)))
|
||||
#define WD_WDFEED (*(REG32 (0xE0000008)))
|
||||
#define WD_WDTV (*(REG32 (0xE000000C)))
|
||||
|
||||
|
||||
/*##############################################################################
|
||||
## System Control Block
|
||||
##############################################################################*/
|
||||
|
||||
#define SCB_EXTINT (*(REG32 (0xE01FC140)))
|
||||
#define SCB_EXTWAKE (*(REG32 (0xE01FC144)))
|
||||
#define SCB_MEMMAP (*(REG32 (0xE01FC040)))
|
||||
#define SCB_PLLCON (*(REG32 (0xE01FC080)))
|
||||
#define SCB_PLLCFG (*(REG32 (0xE01FC084)))
|
||||
#define SCB_PLLSTAT (*(REG32 (0xE01FC088)))
|
||||
#define SCB_PLLFEED (*(REG32 (0xE01FC08C)))
|
||||
#define SCB_PCON (*(REG32 (0xE01FC0C0)))
|
||||
#define SCB_PCONP (*(REG32 (0xE01FC0C4)))
|
||||
#define SCB_VPBDIV (*(REG32 (0xE01FC100)))
|
||||
|
||||
/*##############################################################################
|
||||
## Memory Accelerator Module (MAM)
|
||||
##############################################################################*/
|
||||
|
||||
#define MAM_TIM (*(REG32 (0xE01FC004)))
|
||||
#define MAM_CR (*(REG32 (0xE01FC000)))
|
||||
|
||||
#endif /* lpc210x_h */
|
||||
|
||||
332
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/main.c
Normal file
332
FreeRTOS/Demo/WizNET_DEMO_GCC_ARM7/main.c
Normal file
|
|
@ -0,0 +1,332 @@
|
|||
/*
|
||||
FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* FreeRTOS tutorial books are available in pdf and paperback. *
|
||||
* Complete, revised, and edited pdf reference manuals are also *
|
||||
* available. *
|
||||
* *
|
||||
* Purchasing FreeRTOS documentation will not only help you, by *
|
||||
* ensuring you get running as quickly as possible and with an *
|
||||
* in-depth knowledge of how to use FreeRTOS, it will also help *
|
||||
* the FreeRTOS project to continue with its mission of providing *
|
||||
* professional grade, cross platform, de facto standard solutions *
|
||||
* for microcontrollers - completely free of charge! *
|
||||
* *
|
||||
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
|
||||
* *
|
||||
* Thank you for using FreeRTOS, and thank you for your support! *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
||||
>>>NOTE<<< The modification to the GPL is included to allow you to
|
||||
distribute a combined work that includes FreeRTOS without being obliged to
|
||||
provide the source code for proprietary components outside of the FreeRTOS
|
||||
kernel. FreeRTOS is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details. You should have received a copy of the GNU General Public
|
||||
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||
by writing to Richard Barry, contact details for whom are available on the
|
||||
FreeRTOS WEB site.
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Having a problem? Start by reading the FAQ "My application does *
|
||||
* not run, what could be wrong? *
|
||||
* *
|
||||
* http://www.FreeRTOS.org/FAQHelp.html *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, training, latest information,
|
||||
license and contact details.
|
||||
|
||||
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
|
||||
including FreeRTOS+Trace - an indispensable productivity tool.
|
||||
|
||||
Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
|
||||
the code with commercial support, indemnification, and middleware, under
|
||||
the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
|
||||
provide a safety engineered and independently SIL3 certified version under
|
||||
the SafeRTOS brand: http://www.SafeRTOS.com.
|
||||
*/
|
||||
|
||||
/*
|
||||
NOTE : Tasks run in system mode and the scheduler runs in Supervisor mode.
|
||||
The processor MUST be in supervisor mode when vTaskStartScheduler is
|
||||
called. The demo applications included in the FreeRTOS.org download switch
|
||||
to supervisor mode prior to main being called. If you are not using one of
|
||||
these demo application projects then ensure Supervisor mode is used.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* Program entry point.
|
||||
*
|
||||
* main() is responsible for setting up the microcontroller peripherals, then
|
||||
* starting the demo application tasks. Once the tasks have been created the
|
||||
* scheduler is started and main() should never complete.
|
||||
*
|
||||
* The demo creates the three standard 'flash' tasks to provide some visual
|
||||
* feedback that the system and scheduler are still operating correctly.
|
||||
*
|
||||
* The HTTP server task operates at the highest priority so will always preempt
|
||||
* the flash or idle task on TCP/IP events.
|
||||
*/
|
||||
|
||||
/* Standard includes. */
|
||||
#include <stdlib.h>
|
||||
|
||||
/* Scheduler include files. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "semphr.h"
|
||||
#include "task.h"
|
||||
|
||||
/* Application includes. */
|
||||
#include "i2c.h"
|
||||
#include "HTTP_Serv.h"
|
||||
#include "flash.h"
|
||||
#include "partest.h"
|
||||
#include "dynamic.h"
|
||||
#include "semtest.h"
|
||||
#include "PollQ.h"
|
||||
#include "BlockQ.h"
|
||||
#include "integer.h"
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Constants to setup the PLL. */
|
||||
#define mainPLL_MUL_4 ( ( unsigned char ) 0x0003 )
|
||||
#define mainPLL_DIV_1 ( ( unsigned char ) 0x0000 )
|
||||
#define mainPLL_ENABLE ( ( unsigned char ) 0x0001 )
|
||||
#define mainPLL_CONNECT ( ( unsigned char ) 0x0003 )
|
||||
#define mainPLL_FEED_BYTE1 ( ( unsigned char ) 0xaa )
|
||||
#define mainPLL_FEED_BYTE2 ( ( unsigned char ) 0x55 )
|
||||
#define mainPLL_LOCK ( ( unsigned long ) 0x0400 )
|
||||
|
||||
/* Constants to setup the MAM. */
|
||||
#define mainMAM_TIM_3 ( ( unsigned char ) 0x03 )
|
||||
#define mainMAM_MODE_FULL ( ( unsigned char ) 0x02 )
|
||||
|
||||
/* Constants to setup the peripheral bus. */
|
||||
#define mainBUS_CLK_FULL ( ( unsigned char ) 0x01 )
|
||||
|
||||
/* Constants to setup I/O and processor. */
|
||||
#define mainBUS_CLK_FULL ( ( unsigned char ) 0x01 )
|
||||
#define mainLED_TO_OUTPUT ( ( unsigned long ) 0xff0000 )
|
||||
#define mainJTAG_PORT ( ( unsigned long ) 0x3E0000UL )
|
||||
|
||||
/* Priorities for the demo application tasks. */
|
||||
#define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
|
||||
#define mainHTTP_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
|
||||
#define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
|
||||
#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
|
||||
#define mainERROR_CHECK_PRIORITY ( tskIDLE_PRIORITY + 1 )
|
||||
|
||||
/* Flash rates of the on board LED to indicate the health of the system. */
|
||||
#define mainNO_ERROR_DELAY ( 3000 )
|
||||
#define mainERROR_DELAY ( 500 )
|
||||
#define mainON_BOARD_LED_BIT ( ( unsigned long ) 0x80 )
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* The Olimex demo board has a single built in LED. This function simply
|
||||
* toggles its state.
|
||||
*/
|
||||
void prvToggleOnBoardLED( void );
|
||||
|
||||
/*
|
||||
* Configure the processor for use with the Olimex demo board.
|
||||
*/
|
||||
static void prvSetupHardware( void );
|
||||
|
||||
/*
|
||||
* Simply check for errors and toggle the onboard LED.
|
||||
*/
|
||||
static void prvErrorChecks( void *pvParameters );
|
||||
|
||||
/*
|
||||
* Return true if the demo tasks are executing without error - otherwise
|
||||
* return false.
|
||||
*/
|
||||
static void prvMainCheckOtherTasksAreStillRunning( void );
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Flag set by prvMainCheckOtherTasksAreStillExecuting(). */
|
||||
long lErrorInTask = pdFALSE;
|
||||
|
||||
/*
|
||||
* Application entry point:
|
||||
* Starts all the other tasks, then starts the scheduler.
|
||||
*/
|
||||
int main( void )
|
||||
{
|
||||
/* Setup the hardware for use with the Olimex demo board. */
|
||||
prvSetupHardware();
|
||||
|
||||
/* Start the standard flash tasks so the WEB server is not the only thing
|
||||
running. */
|
||||
vStartLEDFlashTasks( mainLED_TASK_PRIORITY );
|
||||
vStartSemaphoreTasks( tskIDLE_PRIORITY );
|
||||
vStartDynamicPriorityTasks();
|
||||
vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
|
||||
vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
|
||||
vStartIntegerMathTasks( tskIDLE_PRIORITY );
|
||||
|
||||
/* Start the WEB server task and the error check task. */
|
||||
xTaskCreate( vHTTPServerTask, ( signed char * ) "HTTP", configMINIMAL_STACK_SIZE, NULL, mainHTTP_TASK_PRIORITY, NULL );
|
||||
xTaskCreate( prvErrorChecks, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainERROR_CHECK_PRIORITY, NULL );
|
||||
|
||||
/* Now all the tasks have been started - start the scheduler.
|
||||
|
||||
NOTE : Tasks run in system mode and the scheduler runs in Supervisor mode.
|
||||
The processor MUST be in supervisor mode when vTaskStartScheduler is
|
||||
called. The demo applications included in the FreeRTOS.org download switch
|
||||
to supervisor mode prior to main being called. If you are not using one of
|
||||
these demo application projects then ensure Supervisor mode is used. */
|
||||
vTaskStartScheduler();
|
||||
|
||||
/* Should never reach here! */
|
||||
return 0;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvSetupHardware( void )
|
||||
{
|
||||
#ifdef RUN_FROM_RAM
|
||||
/* Remap the interrupt vectors to RAM if we are are running from RAM. */
|
||||
SCB_MEMMAP = 2;
|
||||
#endif
|
||||
|
||||
/* Set all GPIO to output other than the P0.14 (BSL), and the JTAG pins.
|
||||
The JTAG pins are left as input as I'm not sure what will happen if the
|
||||
Wiggler is connected after powerup - not that it would be a good idea to
|
||||
do that anyway. */
|
||||
GPIO_IODIR = ~( mainJTAG_PORT );
|
||||
|
||||
/* Setup the PLL to multiply the XTAL input by 4. */
|
||||
SCB_PLLCFG = ( mainPLL_MUL_4 | mainPLL_DIV_1 );
|
||||
|
||||
/* Activate the PLL by turning it on then feeding the correct sequence of
|
||||
bytes. */
|
||||
SCB_PLLCON = mainPLL_ENABLE;
|
||||
SCB_PLLFEED = mainPLL_FEED_BYTE1;
|
||||
SCB_PLLFEED = mainPLL_FEED_BYTE2;
|
||||
|
||||
/* Wait for the PLL to lock... */
|
||||
while( !( SCB_PLLSTAT & mainPLL_LOCK ) );
|
||||
|
||||
/* ...before connecting it using the feed sequence again. */
|
||||
SCB_PLLCON = mainPLL_CONNECT;
|
||||
SCB_PLLFEED = mainPLL_FEED_BYTE1;
|
||||
SCB_PLLFEED = mainPLL_FEED_BYTE2;
|
||||
|
||||
/* Setup and turn on the MAM. Three cycle access is used due to the fast
|
||||
PLL used. It is possible faster overall performance could be obtained by
|
||||
tuning the MAM and PLL settings. */
|
||||
MAM_TIM = mainMAM_TIM_3;
|
||||
MAM_CR = mainMAM_MODE_FULL;
|
||||
|
||||
/* Setup the peripheral bus to be the same as the PLL output. */
|
||||
SCB_VPBDIV = mainBUS_CLK_FULL;
|
||||
|
||||
/* Initialise the i2c peripheral. */
|
||||
i2cInit();
|
||||
|
||||
/* Initialise the LED's used by the flash tasks. */
|
||||
vParTestInitialise();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvMainCheckOtherTasksAreStillRunning( void )
|
||||
{
|
||||
/* Check all the demo tasks (other than the flash tasks) to ensure
|
||||
that they are all still running, and that none of them have detected
|
||||
an error. */
|
||||
|
||||
/* This function is called from more than one task. */
|
||||
if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
|
||||
{
|
||||
lErrorInTask = pdTRUE;
|
||||
}
|
||||
|
||||
if( xArePollingQueuesStillRunning() != pdTRUE )
|
||||
{
|
||||
lErrorInTask = pdTRUE;
|
||||
}
|
||||
|
||||
if( xAreSemaphoreTasksStillRunning() != pdTRUE )
|
||||
{
|
||||
lErrorInTask = pdTRUE;
|
||||
}
|
||||
|
||||
if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
|
||||
{
|
||||
lErrorInTask = pdTRUE;
|
||||
}
|
||||
|
||||
if( xAreBlockingQueuesStillRunning() != pdTRUE )
|
||||
{
|
||||
lErrorInTask = pdTRUE;
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void prvToggleOnBoardLED( void )
|
||||
{
|
||||
unsigned long ulState;
|
||||
|
||||
ulState = GPIO0_IOPIN;
|
||||
if( ulState & mainON_BOARD_LED_BIT )
|
||||
{
|
||||
GPIO_IOCLR = mainON_BOARD_LED_BIT;
|
||||
}
|
||||
else
|
||||
{
|
||||
GPIO_IOSET = mainON_BOARD_LED_BIT;
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvErrorChecks( void *pvParameters )
|
||||
{
|
||||
portTickType xDelay = mainNO_ERROR_DELAY;
|
||||
|
||||
/* The parameters are not used. */
|
||||
( void ) pvParameters;
|
||||
|
||||
for( ;; )
|
||||
{
|
||||
/* How long we delay depends on whether an error has been detected
|
||||
or not. Therefore the flash rate of the on board LED indicates
|
||||
whether or not an error has occurred. */
|
||||
vTaskDelay( xDelay );
|
||||
|
||||
/* Update the lErrorInTask flag. */
|
||||
prvMainCheckOtherTasksAreStillRunning();
|
||||
|
||||
if( lErrorInTask )
|
||||
{
|
||||
/* An error has been found so reduce the delay period and in so
|
||||
doing speed up the flash rate of the on board LED. */
|
||||
xDelay = mainERROR_DELAY;
|
||||
}
|
||||
|
||||
prvToggleOnBoardLED();
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue