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