I have a simple MQX application based on the watchdog example app. I start an MQX task, initialize the watchdog, and then feed it in a loop unless a button is pressed on the board. If I hold the button to force a watchdog reset the watchdog does trigger, but I never get back to my task. Any idea why this would happen? I'm using KSDK 1.2.0 and a TWR-K64F120M. Code below:
void configureWatchdog(int timeoutSeconds)
{
const uint32_t wdog_clock_hz = 1024;
const wdog_config_t wdog_config
{
.wdogEnable = true,// Watchdog mode
.clkSrc = kWdogLpoClkSrc, // Watchdog clock source is LPO 1KHz
.prescaler = kWdogClkPrescalerDivide1, // Watchdog clock prescaler
.workMode =
{
.kWdogEnableInWaitMode = true, // Enable watchdog in wait mode
.kWdogEnableInStopMode = true, // Enable watchdog in stop mode
.kWdogEnableInDebugMode = false,// Disable watchdog in debug mode
},
.updateEnable = true, // Update register enabled
.intEnable = false,
.winEnable = false, //Disable window function
.windowValue = 0, // Watchdog window value
.timeoutValue = timeoutSeconds * wdog_clock_hz,// Watchdog overflow time
};
WDOG_DRV_Init(&wdog_config);
}
bool watchdogReboot()
{
return (RCM->SRS0 & RCM_SRS0_WDOG_MASK) > 0;
}
void Main_Task(uint32_t unused)
{
_int_install_unexpected_isr();
for (size_t i = 0; i < PORT_INSTANCE_COUNT; i++)
{
CLOCK_SYS_EnablePortClock(i);
}
configure_i2s_pins(0);
configure_i2c_pins(I2C0_IDX);
/* Init board clock */
BOARD_ClockInit();
installIntHandlers();
GPIO_DRV_Init(switchPins, ledPins);
configureWatchdog(5);
WDOG_DRV_Refresh();
printf("\r\n");
if(watchdogReboot())
{
LOG_FATAL("System reboot due to watchdog\n");
}
//Periodically feed the watchdog
uint32_t val = 0;
while(true)
{
OSA_TimeDelay(1000);
val = (~val) & 0x01;
GPIO_HAL_WritePinOutput(PTE, 6, val);
if(GPIO_HAL_ReadPinInput(PTA, 4) != 0)
{
printf("feed the dog\n");
WDOG_DRV_Refresh();
}
}
return;
}
