问题描述:
1.看门狗开启成功,超时后也可以触发复位(看门狗触发到成功复位有一个比较长的时间间隔)
2.使用`Watchdog_close`将看门狗关闭后,达到看门狗的触发周期依然可以触发看门狗的复位.
看门狗相关代码:
```
Watchdog_Params watchdog0Params;
Watchdog_Handle watchdog0Handle = NULL;
unsigned char set_watchdogs(unsigned char status)
{
unsigned char ret = 0xFF;
switch(status){
case 0x00:
ret = 0x00;
if(watchdog0Handle != NULL){
Watchdog_clear(watchdog0Handle);
Watchdog_close(watchdog0Handle);
}else{
DBG_E("Watchdog isn`t enabled");
}
break;
case 0x01:
ret = 0x01;
if(watchdog0Handle != NULL){
Watchdog_open(CONFIG_WATCHDOG_0, &watchdog0Params);
Watchdog_clear(watchdog0Handle);
}else{
DBG_E("Watchdog isn`t init");
my_watchdog_config();
}
break;
default:
break;
}
DBG_F("%s watchdogs", status?"Enable":"Disable");
return ret;
}
void WatchdogCallbackFxn(Watchdog_Handle handle)
{
printf("Watchdog timer triggered!\n");
// releaseResources();
}
int my_watchdog_config()
{
int ret = 0;
Watchdog_init();
Watchdog_Params_init(&watchdog0Params);
watchdog0Params.resetMode = Watchdog_RESET_ON;
watchdog0Params.callbackFxn = (Watchdog_Callback)WatchdogCallbackFxn;
watchdog0Handle = Watchdog_open(CONFIG_WATCHDOG_0, &watchdog0Params);
if(watchdog0Handle == NULL){
ret = -1;
}else{
ret = 0;
}
return ret;
}
```
