mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-30 23:18:37 -04:00
Add the comtest_strings.c and serial.c files - Tx is workings, but both files are still a work in progress.
This commit is contained in:
Richard Barry
parent
2874006c7b
commit
7b24b4c30c
9 changed files with 831 additions and 29 deletions
|
|
@ -0,0 +1,241 @@
|
|||
/*
|
||||
FreeRTOS V7.0.1 - Copyright (C) 2011 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
BASIC INTERRUPT DRIVEN SERIAL PORT DRIVER FOR UART0.
|
||||
|
||||
***Note*** This example uses queues to send each character into an interrupt
|
||||
service routine and out of an interrupt service routine individually. This
|
||||
is done to demonstrate queues being used in an interrupt, and to deliberately
|
||||
load the system to test the FreeRTOS port. It is *NOT* meant to be an
|
||||
example of an efficient implementation. An efficient implementation should
|
||||
use FIFOs or DMA if available, and only use FreeRTOS API functions when
|
||||
enough has been received to warrant a task being unblocked to process the
|
||||
data.
|
||||
*/
|
||||
|
||||
/* Scheduler includes. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "queue.h"
|
||||
#include "semphr.h"
|
||||
#include "task.h" /*_RB_ remove this when the file is working. */
|
||||
#include "comtest_strings.h"
|
||||
|
||||
/* Library includes. */
|
||||
#include "xuartlite.h"
|
||||
#include "xuartlite_l.h"
|
||||
|
||||
/* Demo application includes. */
|
||||
#include "serial.h"
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Misc defines. */
|
||||
#define serINVALID_QUEUE ( ( xQueueHandle ) 0 )
|
||||
#define serNO_BLOCK ( ( portTickType ) 0 )
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* The queue used to hold received characters. */
|
||||
static xQueueHandle xRxedChars;
|
||||
static xQueueHandle xCharsForTx;
|
||||
|
||||
static XUartLite xUartLiteInstance;
|
||||
|
||||
static void prvRxHandler( void *pvUnused, unsigned portBASE_TYPE uxByteCount );
|
||||
static void prvTxHandler( void *pvUnused, unsigned portBASE_TYPE uxByteCount );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* See the serial2.h header file.
|
||||
*/
|
||||
xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
|
||||
{
|
||||
portBASE_TYPE xStatus;
|
||||
|
||||
/* Create the queues used to hold Rx/Tx characters. */
|
||||
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
|
||||
xCharsForTx = xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
|
||||
|
||||
/* If the queues were created correctly then setup the serial port
|
||||
hardware. */
|
||||
if( ( xRxedChars != serINVALID_QUEUE ) && ( xCharsForTx != serINVALID_QUEUE ) )
|
||||
{
|
||||
xStatus = XUartLite_Initialize( &xUartLiteInstance, XPAR_UARTLITE_1_DEVICE_ID );
|
||||
|
||||
if( xStatus == XST_SUCCESS )
|
||||
{
|
||||
XUartLite_ResetFifos( &xUartLiteInstance );
|
||||
XUartLite_SetRecvHandler( &xUartLiteInstance, ( XUartLite_Handler ) prvRxHandler, NULL );
|
||||
XUartLite_SetSendHandler( &xUartLiteInstance, ( XUartLite_Handler ) prvTxHandler, NULL );
|
||||
xStatus = xPortInstallInterruptHandler( XPAR_INTC_0_UARTLITE_1_VEC_ID, ( XInterruptHandler ) XUartLite_InterruptHandler, &xUartLiteInstance );
|
||||
XUartLite_EnableIntr( xUartLiteInstance.RegBaseAddress );
|
||||
vPortEnableInterrupt( XPAR_INTC_0_UARTLITE_1_VEC_ID );
|
||||
}
|
||||
|
||||
configASSERT( xStatus == pdPASS );
|
||||
}
|
||||
|
||||
/* This demo file only supports a single port but something must be
|
||||
returned to comply with the standard demo header file. */
|
||||
return ( xComPortHandle ) 0;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed char *pcRxedChar, portTickType xBlockTime )
|
||||
{
|
||||
extern u8 XUartLite_RecvByte(u32 BaseAddress);
|
||||
|
||||
// *pcRxedChar = XUartLite_RecvByte( xUartLiteInstance.RegBaseAddress );
|
||||
|
||||
vTaskDelay( 1000 );
|
||||
return pdTRUE;
|
||||
#if 0
|
||||
/* The port handle is not required as this driver only supports one port. */
|
||||
( void ) pxPort;
|
||||
|
||||
/* Get the next character from the buffer. Return false if no characters
|
||||
are available, or arrive before xBlockTime expires. */
|
||||
if( xQueueReceive( xRxedChars, pcRxedChar, xBlockTime ) )
|
||||
{
|
||||
return pdTRUE;
|
||||
}
|
||||
else
|
||||
{
|
||||
return pdFALSE;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vSerialPutString( xComPortHandle pxPort, const signed char * const pcString, unsigned short usStringLength )
|
||||
{
|
||||
XUartLite_Send( &xUartLiteInstance, ( unsigned char * ) pcString, ( unsigned portBASE_TYPE ) usStringLength );
|
||||
|
||||
#if 0
|
||||
unsigned portBASE_TYPE uxReturn = 0U;
|
||||
|
||||
char *pc = pc;
|
||||
extern void XUartLite_SendByte(u32 BaseAddress, u8 Data);
|
||||
|
||||
/* Just to avoid compiler warnings. */
|
||||
( void ) pxPort;
|
||||
|
||||
while( uxReturn != usStringLength )
|
||||
{
|
||||
XUartLite_SendByte( xUartLiteInstance.RegBaseAddress, *pc );
|
||||
pc++;
|
||||
uxReturn++;
|
||||
// uxReturn += XUartLite_Send( &xUartLiteInstance, ( unsigned char * ) pcString, ( ( unsigned portBASE_TYPE ) usStringLength ) - uxReturn );
|
||||
while( XUartLite_IsSending( &xUartLiteInstance ) != pdFALSE )
|
||||
{
|
||||
/*_RB_ This function is not yet written to make use of the RTOS. */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed char cOutChar, portTickType xBlockTime )
|
||||
{
|
||||
#if 1
|
||||
extern void XUartLite_SendByte(u32 BaseAddress, u8 Data);
|
||||
|
||||
// for( ;; )
|
||||
// {
|
||||
XUartLite_SendByte( xUartLiteInstance.RegBaseAddress, cOutChar );
|
||||
// }
|
||||
// vTaskDelay( 2 );
|
||||
return 1;
|
||||
#else
|
||||
signed portBASE_TYPE xReturn;
|
||||
|
||||
if( xQueueSend( xCharsForTx, &cOutChar, xBlockTime ) == pdPASS )
|
||||
{
|
||||
xReturn = pdPASS;
|
||||
|
||||
/* Enable the UART Tx interrupt. */
|
||||
XUartLite_EnableIntr( xUartLiteInstance.RegBaseAddress );
|
||||
}
|
||||
else
|
||||
{
|
||||
xReturn = pdFAIL;
|
||||
}
|
||||
|
||||
return xReturn;
|
||||
#endif
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void vSerialClose( xComPortHandle xPort )
|
||||
{
|
||||
/* Not supported as not required by the demo application. */
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvRxHandler( void *pvUnused, unsigned portBASE_TYPE uxByteCount )
|
||||
{
|
||||
portNOP();
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvTxHandler( void *pvUnused, unsigned portBASE_TYPE uxByteCount )
|
||||
{
|
||||
portNOP();
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue