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First version of STR75x RIDE port and demo.

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This commit is contained in:
Richard Barry 2006-11-19 13:20:37 +00:00
parent b2a52ede55
commit 6ac900dc95
56 changed files with 20385 additions and 0 deletions
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93
Demo/ARM7_STR75x_GCC/serial/serialISR.c Normal file
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/*
FreeRTOS.org V4.1.2 - Copyright (C) 2003-2006 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.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
***************************************************************************
*/
/* Library includes. */
#include "75x_uart.h"
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "queue.h"
static xQueueHandle xRxedChars;
static xQueueHandle xCharsForTx;
static portBASE_TYPE volatile *pxQueueEmpty;
void vConfigureQueues( xQueueHandle xQForRx, xQueueHandle xQForTx, portBASE_TYPE volatile *pxEmptyFlag )
{
xRxedChars = xQForRx;
xCharsForTx = xQForTx;
pxQueueEmpty = pxEmptyFlag;
}
/*-----------------------------------------------------------*/
void vSerialISR( void )
{
signed portCHAR cChar;
portBASE_TYPE xTaskWokenByTx = pdFALSE, xTaskWokenByPost = pdFALSE;
do
{
if( UART0->MIS & UART_IT_Transmit )
{
/* The interrupt was caused by the THR becoming empty. Are there any
more characters to transmit? */
if( xQueueReceiveFromISR( xCharsForTx, &cChar, &xTaskWokenByTx ) == pdTRUE )
{
/* A character was retrieved from the queue so can be sent to the
THR now. */
UART0->DR = cChar;
}
else
{
*pxQueueEmpty = pdTRUE;
}
UART_ClearITPendingBit( UART0, UART_IT_Transmit );
}
if( UART0->MIS & UART_IT_Receive )
{
/* The interrupt was caused by a character being received. Grab the
character from the RHR and place it in the queue of received
characters. */
cChar = UART0->DR;
xTaskWokenByPost = xQueueSendFromISR( xRxedChars, &cChar, xTaskWokenByPost );
UART_ClearITPendingBit( UART0, UART_IT_Receive );
}
} while( UART0->MIS );
/* If a task was woken by either a character being received or a character
being transmitted then we may need to switch to another task. */
portEND_SWITCHING_ISR( ( xTaskWokenByPost || xTaskWokenByTx ) );
}