MCU_SWM221/WDT/SimplWDT_Reset/APP/main.c

#include "SWM221.h"

void SerialInit(void);

int main(void)
{	
	uint32_t i;
	
	SystemInit();
	
	SerialInit();
	
	if(SYS->RSTSR & SYS_RSTSR_WDT_Msk)
	{
		SYS->RSTSR = (1 << SYS_RSTSR_WDT_Pos);
		
		printf("WDT Reset Happened\r\n");
	}
	
	WDT_Init(WDT, 0, 1000);
	WDT_Start(WDT);
	
	while(1==1)
	{
		WDT_Feed(WDT);	//ע<>͵<EFBFBD>ι<EFBFBD><CEB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>۲<EFBFBD>WDT<44><54>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>
		
		/* ע<>⣺
		 *	1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ι<EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ټ<EFBFBD><EFBFBD><EFBFBD> 5 <EFBFBD><EFBFBD> WDT ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD> 1000000 / 32768 * 5 = 150us<EFBFBD><EFBFBD><EFBFBD>ֿ<EFBFBD><EFBFBD>ǵ<EFBFBD> WDT ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܴ󣬽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD> 300us
		 *	2<EFBFBD><EFBFBD>WDT ֹͣ״̬<EFBFBD>£<EFBFBD><EFBFBD><EFBFBD>Ҫִ<EFBFBD><EFBFBD> WDT_Feed()
		 *	3<EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD> WDT_Feed() <EFBFBD>󣬲<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD> WDT_Stop()<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 5 <EFBFBD><EFBFBD> WDT ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD> WDT_Stop()
		*/
		
		for(i = 0; i < CyclesPerUs * 300 / 4; i++) __NOP();
	}
}


void SerialInit(void)
{
	UART_InitStructure UART_initStruct;
	
	PORT_Init(PORTA, PIN0, PORTA_PIN0_UART0_RX, 1);	//GPIOA.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪUART0 RXD
	PORT_Init(PORTA, PIN1, PORTA_PIN1_UART0_TX, 0);	//GPIOA.1<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪUART0 TXD
 	
 	UART_initStruct.Baudrate = 57600;
	UART_initStruct.DataBits = UART_DATA_8BIT;
	UART_initStruct.Parity = UART_PARITY_NONE;
	UART_initStruct.StopBits = UART_STOP_1BIT;
	UART_initStruct.RXThreshold = 3;
	UART_initStruct.RXThresholdIEn = 0;
	UART_initStruct.TXThreshold = 3;
	UART_initStruct.TXThresholdIEn = 0;
	UART_initStruct.TimeoutTime = 10;
	UART_initStruct.TimeoutIEn = 0;
 	UART_Init(UART0, &UART_initStruct);
	UART_Open(UART0);
}

/****************************************************************************************************************************************** 
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: fputc()
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: printf()ʹ<EFBFBD>ô˺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ʵĴ<EFBFBD><EFBFBD>ڴ<EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: int ch		Ҫ<EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>
*			FILE *f		<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>    <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
******************************************************************************************************************************************/
int fputc(int ch, FILE *f)
{
	UART_WriteByte(UART0, ch);
	
	while(UART_IsTXBusy(UART0));
 	
	return ch;
}