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jeremybenn |
/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
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/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
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/* ELIGIBILITY FOR ANY PURPOSES. */
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/* (C) Fujitsu Microelectronics Europe GmbH */
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/*------------------------------------------------------------------------
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watchdog.c
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- This file contains the function deefinition for hardware watchdog.
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-------------------------------------------------------------------------*/
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#include "mb96348hs.h"
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#include "FreeRTOS.h"
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#include "task.h"
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#include "watchdog.h"
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/*---------------------------------------------------------------------------
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* Setup Watchdog
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*---------------------------------------------------------------------------*/
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#if WATCHDOG != WTC_NONE
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void InitWatchdog( void )
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{
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WDTC_WTI = WTC_PER_2_23; /* 2^23/CLKWT */
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WDTC_WTCS = WTC_CLKMC; /* CLKWT=CLKMC, Watchdog expiration delay = 2.097s @ 4MHZ CLKMC*/
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WDTCP = 0x00; /* Activate Watchdog, Clear Pattern 0x00 */
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}
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#endif
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/*---------------------------------------------------------------------------
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* The below task clears the watchdog and blocks itself for WTC_CLR_PER ticks.
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*---------------------------------------------------------------------------*/
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#if WATCHDOG == WTC_IN_TASK
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static void prvWatchdogTask( void *pvParameters )
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{
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const portTickType xFrequency = WTC_CLR_PER;
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portTickType xLastWakeTime;
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( void ) pvParameters;
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/* Get currrent tick count */
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xLastWakeTime = xTaskGetTickCount();
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for( ;; )
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{
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/* Get currrent tick count */
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xLastWakeTime = xTaskGetTickCount();
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Kick_Watchdog();
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/* Block the task for WTC_CLR_PER ticks (1s) at watchdog overflow period of WTC_PER_2_23 CLKMC cycles */
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vTaskDelayUntil( &xLastWakeTime, xFrequency );
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}
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}
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#endif
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/*---------------------------------------------------------------------------
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* The below function creates hardware watchdog task.
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*---------------------------------------------------------------------------*/
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#if WATCHDOG == WTC_IN_TASK
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void vStartWatchdogTask( unsigned portBASE_TYPE uxPriority )
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{
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xTaskCreate( prvWatchdogTask, (signed portCHAR *) "KickWTC", portMINIMAL_STACK_SIZE, ( void * ) NULL, uxPriority, ( xTaskHandle * ) NULL );
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}
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#endif
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