len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-04-19 21:11:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

Remove the two separate ports, instead use two demo apps that use a conditional compilation to select the method of interrupt management to use.

Browse source
This commit is contained in:
Richard Barry 2008-10-23 19:14:45 +00:00
parent eee1043e33
commit a91c6302e7
9 changed files with 9 additions and 1022 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

194
Source/portable/Rowley/MSP430F449/Port1/port.c
View file

@ -1,194 +0,0 @@
/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
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.
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/
/* Constants required for hardware setup. The tick ISR runs off the ACLK,
not the MCLK. */
#define portACLK_FREQUENCY_HZ ( ( portTickType ) 32768 )
#define portINITIAL_CRITICAL_NESTING ( ( unsigned portSHORT ) 10 )
#define portFLAGS_INT_ENABLED ( ( portSTACK_TYPE ) 0x08 )
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
typedef void tskTCB;
extern volatile tskTCB * volatile pxCurrentTCB;
/* Each task maintains a count of the critical section nesting depth. Each
time a critical section is entered the count is incremented. Each time a
critical section is exited the count is decremented - with interrupts only
being re-enabled if the count is zero.
usCriticalNesting will get set to zero when the scheduler starts, but must
not be initialised to zero as this will cause problems during the startup
sequence. */
volatile unsigned portSHORT usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick. This uses timer 0, but
* could have alternatively used the watchdog timer or timer 1.
*/
void prvSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
/*
* Initialise the stack of a task to look exactly as if a call to
* portSAVE_CONTEXT had been called.
*
* See the header file portable.h.
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
/*
Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging and can be included if required.
*pxTopOfStack = ( portSTACK_TYPE ) 0x1111;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x2222;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x3333;
pxTopOfStack--;
*/
/* The msp430 automatically pushes the PC then SR onto the stack before
executing an ISR. We want the stack to look just as if this has happened
so place a pointer to the start of the task on the stack first - followed
by the flags we want the task to use when it starts up. */
*pxTopOfStack = ( portSTACK_TYPE ) pxCode;
pxTopOfStack--;
*pxTopOfStack = portFLAGS_INT_ENABLED;
pxTopOfStack--;
/* Next the general purpose registers. */
*pxTopOfStack = ( portSTACK_TYPE ) 0x4444;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x5555;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x6666;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x7777;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x8888;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x9999;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xaaaa;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xbbbb;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xcccc;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xdddd;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xeeee;
pxTopOfStack--;
/* When the task starts is will expect to find the function parameter in
R15. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
pxTopOfStack--;
/* A variable is used to keep track of the critical section nesting.
This variable has to be stored as part of the task context and is
initially set to zero. */
*pxTopOfStack = ( portSTACK_TYPE ) portNO_CRITICAL_SECTION_NESTING;
/* Return a pointer to the top of the stack we have generated so this can
be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the MSP430 port will get stopped. If required simply
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
/*
* Hardware initialisation to generate the RTOS tick. This uses timer 0
* but could alternatively use the watchdog timer or timer 1.
*/
void prvSetupTimerInterrupt( void )
{
/* Ensure the timer is stopped. */
TACTL = 0;
/* Run the timer of the ACLK. */
TACTL = TASSEL_1;
/* Clear everything to start with. */
TACTL |= TACLR;
/* Set the compare match value according to the tick rate we want. */
TACCR0 = portACLK_FREQUENCY_HZ / configTICK_RATE_HZ;
/* Enable the interrupts. */
TACCTL0 = CCIE;
/* Start up clean. */
TACTL |= TACLR;
/* Up mode. */
TACTL |= MC_1;
}
/*-----------------------------------------------------------*/

149
Source/portable/Rowley/MSP430F449/Port1/portmacro.h
View file

@ -1,149 +0,0 @@
/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
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.
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
/*-----------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the
* given hardware and compiler.
*
* These settings should not be altered.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE unsigned portSHORT
#define portBASE_TYPE portSHORT
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
#else
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/
/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() _DINT();
#define portENABLE_INTERRUPTS() _EINT();
/*-----------------------------------------------------------*/
/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portSHORT ) 0 )
#define portENTER_CRITICAL() \
{ \
extern volatile unsigned portSHORT usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled usCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}
#define portEXIT_CRITICAL() \
{ \
extern volatile unsigned portSHORT usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
/*-----------------------------------------------------------*/
/* Task utilities. */
/*
* Manual context switch called by portYIELD or taskYIELD.
*/
extern void vPortYield( void );
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
/* Just used by the demo application to indicate which form of interrupt
service routine should be used. See the online port documentation for more
information. */
#define MSP_ROWLEY_RB_PORT
#define portNOP()
#endif /* PORTMACRO_H */

238
Source/portable/Rowley/MSP430F449/Port2/port.c
View file

@ -1,238 +0,0 @@
/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
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.
*/
/*
* Milos Prokic
*
* File adopted from the MSP430 GCC port
* Interrupt handling, xPortStartScheduler, vPortYield, portSAVE_CONTEXT(), portRESTORE_CONTEXT()
/* Standard includes. */
#include <stdlib.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/
/* Constants required for hardware setup. The tick ISR runs off the ACLK,
not the MCLK. */
#define portACLK_FREQUENCY_HZ ( ( portTickType ) 32768 )
#define portINITIAL_CRITICAL_NESTING ( ( unsigned portSHORT ) 10 )
#define portFLAGS_INT_ENABLED ( ( portSTACK_TYPE ) 0x08 )
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
typedef void tskTCB;
extern volatile tskTCB * volatile pxCurrentTCB;
unsigned portCHAR ucReschedule;
/* Each task maintains a count of the critical section nesting depth. Each
time a critical section is entered the count is incremented. Each time a
critical section is exited the count is decremented - with interrupts only
being re-enabled if the count is zero.
usCriticalNesting will get set to zero when the scheduler starts, but must
not be initialised to zero as this will cause problems during the startup
sequence. */
volatile unsigned portSHORT usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick. This uses timer 0, but
* could have alternatively used the watchdog timer or timer 1.
*/
void prvSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
/*
* Initialise the stack of a task to look exactly as if a call to
* portSAVE_CONTEXT had been called.
*
* See the header file portable.h.
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
/*
Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging and can be included if required.
*pxTopOfStack = ( portSTACK_TYPE ) 0x1111;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x2222;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x3333;
pxTopOfStack--;
*/
/* The msp430 automatically pushes the PC then SR onto the stack before
executing an ISR. We want the stack to look just as if this has happened
so place a pointer to the start of the task on the stack first - followed
by the flags we want the task to use when it starts up. */
*pxTopOfStack = ( portSTACK_TYPE ) pxCode;
pxTopOfStack--;
*pxTopOfStack = portFLAGS_INT_ENABLED;
pxTopOfStack--;
/* Next the general purpose registers. */
*pxTopOfStack = ( portSTACK_TYPE ) 0x4444;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x5555;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x6666;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x7777;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x8888;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x9999;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xaaaa;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xbbbb;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xcccc;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xdddd;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0xeeee;
pxTopOfStack--;
/* When the task starts is will expect to find the function parameter in
R15. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
pxTopOfStack--;
/* A variable is used to keep track of the critical section nesting.
This variable has to be stored as part of the task context and is
initially set to zero. */
*pxTopOfStack = ( portSTACK_TYPE ) portNO_CRITICAL_SECTION_NESTING;
/* Return a pointer to the top of the stack we have generated so this can
be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the MSP430 port will get stopped. If required simply
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
/*
* Hardware initialisation to generate the RTOS tick. This uses timer 0
* but could alternatively use the watchdog timer or timer 1.
*/
void prvSetupTimerInterrupt( void )
{
/* Ensure the timer is stopped. */
TACTL = 0;
/* Run the timer of the ACLK. */
TACTL = TASSEL_1;
/* Clear everything to start with. */
TACTL |= TACLR;
/* Set the compare match value according to the tick rate we want. */
TACCR0 = portACLK_FREQUENCY_HZ / configTICK_RATE_HZ;
/* Enable the interrupts. */
TACCTL0 = CCIE;
/* Start up clean. */
TACTL |= TACLR;
/* Up mode. */
TACTL |= MC_1;
}
/*-----------------------------------------------------------*/
/*
* The interrupt service routine used depends on whether the pre-emptive
* scheduler is being used or not.
*/
#if configUSE_PREEMPTION == 1
/*
* Tick ISR for preemptive scheduler. We can use a naked attribute as
* the context is saved at the start of vPortYieldFromTick(). The tick
* count is incremented after the context is saved.
*/
void ISROsTick( void )
{
/* Increment the tick count then switch to the highest priority task
that is ready to run. */
vTaskIncrementTick();
vTaskSwitchContext();
}
#else
/*
* Tick ISR for the cooperative scheduler. All this does is increment the
* tick count. We don't need to switch context, this can only be done by
* manual calls to taskYIELD();
*/
void ISROsTick( void )
{
vTaskIncrementTick();
}
#endif

151
Source/portable/Rowley/MSP430F449/Port2/portext.asm
View file

@ -1,151 +0,0 @@
#include <msp430x14x.h>
/*
* Milos Prokic
*/
/**********************************************************
All Interrupts should follow the naming convention : ISR"name" and declared
as a normal function in C.
One must not forget to allocate interrupts below (see the line "MSPINT OsTick"
below for an example).
By default the ISR will not cause the context switch, but if called in
conjunction with portENTER_SWITCHING_ISR/portEXIT_SWITCHING_ISR(wakeup), where
wakeup = TRUE upon exit the ISR will force the context switch via the
ucReschedule global variable.
**********************************************************/
MSPINT macro name
_##name::
call #_portSAVE_CONTEXT
call #_ISR##name
br #_portSWITCH_EXIT
endm
/**********************************************************
API code
**********************************************************/
.CODE
_vPortYield::
/* Mimic an INT call by pushing SR. */
push SR
/* no INTs !! */
dint
/* Save the context of the current task. */
call #_portSAVE_CONTEXT
/* Switch to the highest priority task that is ready to run. */
call #_vTaskSwitchContext
/* Restore the context of the new task. */
br #_portSWITCH_EXIT
_xPortStartScheduler::
/* Setup the hardware to generate the tick. Interrupts are disabled when
this function is called. */
call #_prvSetupTimerInterrupt
/* Restore the context of the first task that is going to run. */
jmp _portRESTORE_CONTEXT
_portSAVE_CONTEXT::
/* Function to save the context. When this function is called the
return address will appear on the stack. This does not need to be
saved so is overwritten by R4 - hence R4 is not saved initially.
Save the general purpose registers. */
push R5
push R6
push R7
push R8
push R9
push R10
push R11
push R12
push R13
push R14
push R15
/* Now R10 has been saved we can use it to hold the return address,
which is about to be overwritten. */
mov 22(R1),R10
/* Store R4 where the return address was on the stack. */
mov R4,22(R1)
/* Save the critical nesting depth. */
mov.w &_usCriticalNesting, R14
push R14
/* Finally save the new top of stack. */
mov.w &_pxCurrentTCB, R12
mov.w R1, @R12
/* No rescheduling by default. */
mov.b #0,&_ucReschedule
/* Return using the saved return address. */
br R10
_portSWITCH_EXIT::
/* Check ucReschedule to see if a context switch is required. */
tst.b &_ucReschedule
jz _portRESTORE_CONTEXT
call #_vTaskSwitchContext
_portRESTORE_CONTEXT::
/* Restore the context in the opposite order to the save. */
mov.w &_pxCurrentTCB, R12
mov.w @R12, R1
pop R15
mov.w R15, &_usCriticalNesting
pop R15
pop R14
pop R13
pop R12
pop R11
pop R10
pop R9
pop R8
pop R7
pop R6
pop R5
pop R4
/* Ensure any low power mode bits are cleared within the status
register about to be restored. */
bic #(SCG1+SCG0+OSCOFF+CPUOFF),0(SP)
reti
/**********************************************************
Allocate Interrupts using the MSPINT macro (defined at the top of this file.
ex: MSPINT "name"
**********************************************************/
MSPINT OsTick
MSPINT Com1Rx
MSPINT Com1Tx
/*********************************************************
Interrupt Vectors
Timer_A0
ex: PORT1 would look like:
ORG PORT1_VECTOR
DW _"name"
**********************************************************/
.VECTORS
.KEEP
ORG TIMERA0_VECTOR
DW _OsTick
ORG UART1RX_VECTOR
DW _Com1Rx
ORG UART1TX_VECTOR
DW _Com1Tx
END

160
Source/portable/Rowley/MSP430F449/Port2/portmacro.h
View file

@ -1,160 +0,0 @@
/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org 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
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
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.
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
/*-----------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the
* given hardware and compiler.
*
* These settings should not be altered.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE unsigned portSHORT
#define portBASE_TYPE portSHORT
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
#else
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/
/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() _DINT();
#define portENABLE_INTERRUPTS() _EINT();
/*-----------------------------------------------------------*/
/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portSHORT ) 0 )
#define portENTER_CRITICAL() \
{ \
extern volatile unsigned portSHORT usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled ulCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}
#define portEXIT_CRITICAL() \
{ \
extern volatile unsigned portSHORT usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
/*-----------------------------------------------------------*/
/* Task utilities. */
/*
* Manual context switch called by portYIELD or taskYIELD.
*/
extern void vPortYield( void );
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/
#define portENTER_SWITCHING_ISR()
#define portEXIT_SWITCHING_ISR( SwitchRequired ) \
{ \
extern unsigned portCHAR ucReschedule; \
if( SwitchRequired ) \
{ \
ucReschedule = 1; \
} \
}
/* Hardwware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
/* Compiler specifics. */
#define portNOP()
/* Just used by the demo application to indicate which form of interrupt
service routine should be used. See the online port documentation for more
information. */
#define MSP_ROWLEY_MP_PORT
#endif /* PORTMACRO_H */

76
Source/portable/Rowley/MSP430F449/Port1/portext.asm → Source/portable/Rowley/MSP430F449/portasm.h
View file

@ -47,7 +47,8 @@
licensing and training services.
*/
#include "FreeRTOSConfig.h"
#ifndef PORT_ASM_H
#define PORT_ASM_H
portSAVE_CONTEXT macro
/* Save the remaining registers. */
@ -97,76 +98,5 @@ portRESTORE_CONTEXT macro
endm
/*-----------------------------------------------------------*/
.CODE
/*
* The RTOS tick ISR.
*
* If the cooperative scheduler is in use this simply increments the tick
* count.
*
* If the preemptive scheduler is in use a context switch can also occur.
*/
_vTickISR:
portSAVE_CONTEXT
call #_vTaskIncrementTick
#if configUSE_PREEMPTION == 1
call #_vTaskSwitchContext
#endif
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Manual context switch called by the portYIELD() macro.
*/
_vPortYield::
/* Mimic an interrupt by pushing the SR. */
push SR
/* Now the SR is stacked we can disable interrupts. */
dint
/* Save the context of the current task. */
portSAVE_CONTEXT
/* Switch to the highest priority task that is ready to run. */
call #_vTaskSwitchContext
/* Restore the context of the new task. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Start off the scheduler by initialising the RTOS tick timer, then restoring
* the context of the first task.
*/
_xPortStartScheduler::
/* Setup the hardware to generate the tick. Interrupts are disabled
when this function is called. */
call #_prvSetupTimerInterrupt
/* Restore the context of the first task that is going to run. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/* Place the tick ISR in the correct vector. */
.VECTORS
.KEEP
ORG TIMERA0_VECTOR
DW _vTickISR
END
#endif

49
Source/portable/Rowley/MSP430F449/portext.asm
View file

@ -48,54 +48,7 @@
*/
#include "FreeRTOSConfig.h"
portSAVE_CONTEXT macro
/* Save the remaining registers. */
push r4
push r5
push r6
push r7
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
mov.w &_usCriticalNesting, r14
push r14
mov.w &_pxCurrentTCB, r12
mov.w r1, @r12
endm
/*-----------------------------------------------------------*/
portRESTORE_CONTEXT macro
mov.w &_pxCurrentTCB, r12
mov.w @r12, r1
pop r15
mov.w r15, &_usCriticalNesting
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
pop r7
pop r6
pop r5
pop r4
/* The last thing on the stack will be the status register.
Ensure the power down bits are clear ready for the next
time this power down register is popped from the stack. */
bic.w #0xf0,0(SP)
reti
endm
/*-----------------------------------------------------------*/
#include "portasm.h"
.CODE

9
Source/portable/Rowley/MSP430F449/portmacro.h
View file

@ -138,11 +138,12 @@ extern void vPortYield( void );
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) __toplevel
#if configINTERRUPT_EXAMPLE_METHOD == 2
/* Just used by the demo application to indicate which form of interrupt
service routine should be used. See the online port documentation for more
information. */
#define MSP_ROWLEY_RB_PORT
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()
#endif
#endif /* PORTMACRO_H */

5
Source/portable/Rowley/MSP430F449/readme.txt
View file

@ -1,5 +0,0 @@
To use Port1, copy the three files from the Port1 directory into this directory.
To use Port2, copy the three files from the Port2 directory into this directory.
Ensure to perform a complete rebuild.