Hello,
I am writing an application based in nrf1.9.1 in a nrf9160 based board.
AWS FOTA is working fine.
I recently added a watchdog for the application, following this steps:
- Initialize the watchdog
- Configure a channel with a generous timeout (for testing purposes 100s)
- I feed the watchdog in a loop that is running in the main thread every 100ms
The application works fine but as soon as I try a FOTA update the application reboots after a few seconds, not completing the FOTA download. If I comment out the code that configures the watchdog channel (leving the the watchdog init intact) the FOTA works correctly.
Initi of the watchdog is done like this:
int watchdog_init() {
int ret;
const struct device *hw_wdt_dev = DEVICE_DT_GET(WDT_NODE);
LOG_DBG("Task watchdog init.\n");
if (!device_is_ready(hw_wdt_dev)) {
LOG_ERR("Hardware watchdog %s is not ready; ignoring it.\n",
hw_wdt_dev->name);
hw_wdt_dev = NULL;
}
ret = task_wdt_init(hw_wdt_dev);
if (ret != 0) {
LOG_ERR("task wdt init failure: %d\n", ret);
return ret;
}
return 0;
}
Configuration of the channel:
char *wdt_msg="motion";
uint32_t wdt_timeout = MOTION_THRESH_DETECT_DELAY_MS*1000U;
LOG_DBG("Configuring watchdog %s with timeout %dms",wdt_msg,wdt_timeout);
motion_thresh_detect_wdt_id = task_wdt_add(wdt_timeout, &reboot_callback_wdt, (void *)wdt_msg);
Feeding of the watchdog:
task_wdt_feed(motion_thresh_detect_wdt_id);
Callback function when the watchdog is triggered:
void reboot_callback_wdt(int channel_id, void *user_data)
{
//Needs to be a quick operation (32k ticks?)
printk("------>WATCHDOG REBOOT: Task watchdog channel %d callback, thread: %s\n",
channel_id, (char *)user_data);
}
