RTOS/CC2640R2F: Watchdog does not make reset. Callback called but not executed

Hi Andrei,

Assigning one of our experts to review.

Hi Andrei,

1) Can you move the initialization to main() or the init function in simple_peripheral.c?

2) Can you post your implementation in toggleLed()?

Hi Andrei,

The watchdog example program calls the Watchdog_clear(wdHandle); at the callback. This is just so you can try the watchdog example program again and again. But at actual application this is not right.

To test that your watchdog reset is working remove the Watchdog_clear(wdHandle); at the callback. Device reset will occur after 2x timeout.

-kel

Thanks for reply!

1) I moved initialization to main() but this does not help. Also I removed callback from wdParams.

2) This implementation works fine in the other parts of application:

void toggleLed(void){
    PIN_open(&sbpLedState, sbpLedPins);
    PIN_Id activeLed;
    activeLed = Board_LED;
    PIN_setOutputValue(&sbpLedState, activeLed, !PIN_getOutputValue(activeLed));
    Task_sleep(10000);
    PIN_setOutputValue(&sbpLedState, activeLed, !PIN_getOutputValue(activeLed));
    Task_sleep(10000);
    // Close pins after using
    PIN_close(&sbpLedState);
}

Thanks for reply!

I've tried watchdog without callback in wdParams but this also doesn't work. Watchdog example from SDK works fine on my LAUNCHXL board. Is it possible for problem to be in board files changings for my custom board? For watchdog I've just changed all CC2640R2_LAUNCHXL prefixes to my custom board name.

Hi Andrei,

What CC2640R2F SDK version are you using? For learning purposes I suggest you try implement watchdog at simple peripheral using the Launchpad. Flash the simple peripheral to Launchpad, do not debug. This will reset the device at 2x timeout.

Call this at Simple Periheral Init

Watchdog_Handle watchdogHandle;
Watchdog_Params params;

/* Call driver init functions */
Watchdog_init();

/* Open a Watchdog driver instance */

Watchdog_Params_init(&params);
params.callbackFxn = (Watchdog_Callback) watchdogCallback;
params.resetMode = Watchdog_RESET_ON;

watchdogHandle = Watchdog_open(Board_WATCHDOG0, &params);
if (watchdogHandle == NULL) {
/* Error opening Watchdog */
while (1) {}
}

void watchdogCallback(uintptr_t watchdogHandle)
{
//led on off indicator
}

put while loop at GAPROLE_ADVERTISING to make sure it hangs.

-kel

Hi Andrei,

Did you figure it out?

I will close this thread due to inactivity.

I have removed POWER_SAVING predefined symbol from user app compiler predefined symbols and chip started to reset. What is the proper way to use watchdog with POWER_SAVING?

Hi,

The Watchdog Reset works with POWER_SAVING predefine set. I just tested it with my watchdog test code. If you test watchdog with Launchpad and powered using USB, it will not work properly, from what I know this is cause by halt in boot issue. So, to test watchdog using Launchpad you need to remove all jumpers except the led jumpers and power it externally. 

With this watchdog test code below the CC2640R2F will do  a watchdog reset every 26 seconds. The Watchdog Timeout is set to default 1 seconds. The reason for the watchdog reset every 26 seconds is that after advertising it goes to standby mode.

I am using SDKv2.40

Here is my test code.

Watchdog_app.c

void WatchdogApp__Callback(uintptr_t unused)
{
    Led_Off(Board_PIN_LED0);
}

void WatchdogApp__Init(void)
{
    Watchdog_Params params;    
        
    Watchdog_init();
    
    Watchdog_Params_init(&params);
    params.callbackFxn = (Watchdog_Callback)WatchdogApp__Callback;
    params.resetMode = Watchdog_RESET_ON;
    WatchdogHandle = Watchdog_open(Board_WATCHDOG0, &params);
        
    if (WatchdogHandle == NULL) {
        /* Error opening Watchdog */
        while (1);
    }
}

simple_peripheral.c SimplePeripheral_init()

  Led_Init();
  Led_On(Board_PIN_LED0);
  WatchdogApp__Init();

-kel