Matthias
373a8c32b2
git-svn-id: file:///srv/dev-disk-by-uuid-17e88007-4d0c-45e0-8757-cacfcc458630/repositories/svn/Diplomarbeit@55 9fe90eed-be63-e94b-8204-d34ff4c2ff93
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/* ---------------------------------------------------------------------------
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* dio.c - v0.1 (c) 2007 Micro-key bv
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* ---------------------------------------------------------------------------
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* Micro-key bv
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* Industrieweg 28, 9804 TG Noordhorn
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* Postbus 92, 9800 AB Zuidhorn
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* The Netherlands
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* Tel: +31 594 503020
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* Fax: +31 594 505825
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* Email: support@microkey.nl
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* Web: www.microkey.nl
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* ---------------------------------------------------------------------------
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* Description: Digital inputs/outputs interface.
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* ---------------------------------------------------------------------------
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* Version(s): 0.1, 28-11-2007, fvds.
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* Creation.
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* ---------------------------------------------------------------------------
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*/
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/* ---------------------------------------------------------------------------
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* System include files
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* ---------------------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <stdlib.h>
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/* ---------------------------------------------------------------------------
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* Application include files
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* ---------------------------------------------------------------------------
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*/
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#include "LPC23xx.h"
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#include "types.h"
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#include "dio.h"
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#include "dioISR.h"
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#include "armVIC.h"
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/* FreeRTOS includes */
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#include "FreeRTOS.h"
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#include "Task.h"
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#include "queue.h"
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/* ---------------------------------------------------------------------------
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* Local constant and macro definitions
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* ---------------------------------------------------------------------------
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*/
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/* ---------------------------------------------------------------------------
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* Global variable definitions
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* ---------------------------------------------------------------------------
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*/
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extern xQueueHandle dispatchedIsrQueue;
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t_IsrDispatchQueueItem dispatchItem;
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/* ---------------------------------------------------------------------------
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* Local variable definitions
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* ---------------------------------------------------------------------------
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*/
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volatile UINT32 receivedInts = 0;
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/* ---------------------------------------------------------------------------
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* Local function definitions
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* ---------------------------------------------------------------------------
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*/
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static void GpioHandler( void );
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void gpioISR()
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{
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/* Save the context of the interrupted task. */
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portSAVE_CONTEXT();
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{
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/* Call the handler to do the work. This must be a separate function to
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the wrapper to ensure the correct stack frame is set up. */
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GpioHandler();
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}
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/* Restore the context of whichever task is going to run once the interrupt
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completes. */
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portRESTORE_CONTEXT();
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}
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void GpioHandler( void )
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{
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receivedInts++;
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// Check flags
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// -=NOTE=- Because input signal is inverted; the rising and
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// falling signal are switched.
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dispatchItem.riseInterrupts[0] = IO0_INT_STAT_F;
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dispatchItem.fallInterrupts[0] = IO0_INT_STAT_R;
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dispatchItem.riseInterrupts[1] = IO2_INT_STAT_R;
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dispatchItem.fallInterrupts[1] = IO2_INT_STAT_F;
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xQueueSendToBackFromISR( dispatchedIsrQueue, &dispatchItem, pdFALSE );
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IO0_INT_CLR = 0xFFFFFFFF;
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IO2_INT_CLR = 0xFFFFFFFF;
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VICVectAddr = 0x00000000; // clear this interrupt from the VIC
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}
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