int32_t main (void)
{
/* Init System, IP clock and multi-function I/O
In the end of SYS_Init() will issue SYS_LockReg()
to lock protected register. If user want to write
protected register, please issue SYS_UnlockReg()
to unlock protected register if necessary */
SYS_Init();
/* Init UART to 115200-8n1 for print message */
UART_Open(UART0, 115200);
printf("\nThis sample code demonstrate using WDT in polling mode\n");
// WDT register is locked, so it is necessary to unlock protect register before configure WDT
SYS_UnlockReg();
// WDT timeout every 2^14 WDT clock, disable system reset, disable wake up system
WDT_Open(WDT_TIMEOUT_2POW14, 0, FALSE, FALSE);
while(1) {
// WDT timeout flag set
if(WDT_GET_TIMEOUT_INT_FLAG()) {
// Reset WDT and clear time out flag
WDT_CLEAR_TIMEOUT_INT_FLAG();
printf("Reset WDT counter\n");
}
}
}
/**
* @brief IRQ Handler for WDT and WWDT Interrupt
*
* @param None
*
* @return None
*
* @details The WDT_IRQHandler is default IRQ of WDT and WWDT, declared in startup_NUC029xDE.s.
*/
void WDT_IRQHandler(void)
{
if(WDT_GET_TIMEOUT_INT_FLAG() == 1)
{
/* Clear WDT time-out interrupt flag */
WDT_CLEAR_TIMEOUT_INT_FLAG();
g_u8IsWDTTimeoutINT = 1;
}
}
/**
* @brief IRQ Handler for WDT Interrupt
*
* @param None
*
* @return None
*
* @details The WDT_IRQHandler is default IRQ of WDT, declared in startup_M451Series.s.
*/
void WDT_IRQHandler(void)
{
if(g_u32WDTINTCounts < 10)
WDT_RESET_COUNTER();
if(WDT_GET_TIMEOUT_INT_FLAG() == 1)
{
/* Clear WDT time-out interrupt flag */
WDT_CLEAR_TIMEOUT_INT_FLAG();
g_u32WDTINTCounts++;
}
if(WDT_GET_TIMEOUT_WAKEUP_FLAG() == 1)
{
/* Clear WDT time-out wake-up flag */
WDT_CLEAR_TIMEOUT_WAKEUP_FLAG();
g_u8IsWDTWakeupINT = 1;
}
}