StarterWare Watchdog Timer

Introduction

The watchdog timer is an upward counter capable of generating a pulse on the reset pin and an interrupt to the device system modules following an overflow condition.

Programming

• Enable the module clocks before accessing the module. This can be done by calling the API WatchdogTimer1ModuleClkConfig().
• Watchdog timer software reset is done by calling the API WatchdogTimerReset().
• Prescaler clock of the watchdog timer can be enabled and configured using the WatchdogTimerPreScalerClkEnable() API.
• The count value for the Watchdog timer can be set by calling the WatchdogTimerCounterSet() API.
• The reload value for the counter register of watchdog timer can be set by calling the API WatchdogTimerReloadSet.
• To Start/Enable the watchdog timer WatchdogTimerEnable() API can be used.
• To reload value from the load register into the counter register the WatchdogTimerTriggerSet() API has to be called. This API takes a parameter by name ‘trigVal’. If this API has to be called many times in an application then everytime this API is called ‘trigVal’ has to be different.