Watch Dog Timer

Question

Is there any code example for GR-Lychee watch dog timer

Okamiya Yuuki · Accepted Answer

Sorry, but Mbed OS doesn't have WDT. A similar forum was made as follows. 
 japan.renesasrulz.com/.../28293 
 
Could you try below code ? 
 
#include "iodefine.h" 
// Initialize 
void WdtSet(void) 
{ 
WDTWRCSR = (uint8_t)WDTWRCSR;	// Dummy read(8bit read, 16bit write) 
WDTWRCSR = 0xA500; // Clear WOVF 
WDTWRCSR = 0x5A5F;	// WdtReset Enable 
WDTWTCNT = 0x5A00; // Counter to 00 
WDTWTCSR = 0xA57F;	// WDT timer starts（A580=7.7uS･･･A57B=2mS･･･A57F=125mS) 
} 
// WDT timer clear 
void WdtClear(void) 
{ 
WDTWTCNT = 0x5A00;	// Counter to 00 
} 
// Read the cause of WDT（1=WDT occurs） 
int WdtStats(void) 
{ 
uint8_t res = (uint8_t)WDTWRCSR;	// In case of WDT wake up, that becomes from 0x1F to 0xDF 
WDTWRCSR = 0x1f;	// WOVF clear 
return (res & BIT7)? 1: 0; 
}

jihas · Answer

The code is working.If using IDE4GR include "mbed.h", in WdtStats BIT7 will give an error in ide4gr .To fix this, initialise uint16_t BIT7=0x0040;