Avoid infinite loop if we fail to enable/reconfigure watchdog

Author: pennam

src/utility/ota/OTA-nano-rp2040.cpp

@@ -243,6 +243,8 @@ int rp2040_connect_onOTARequest(char const * ota_url)
 
   /* Perform the reset to reboot to SFU. */
   mbed_watchdog_trigger_reset();
+  /* If watchdog is enabled we should not reach this point */
+  NVIC_SystemReset();
 
   return static_cast<int>(OTAError::None);
 }

src/utility/watchdog/Watchdog.cpp

@@ -124,11 +124,11 @@ void mbed_watchdog_trigger_reset()
 
   if (hal_watchdog_init(&cfg) == WATCHDOG_STATUS_OK) {
     is_watchdog_enabled = true;
+    while(1){}
   }
   else {
     DEBUG_WARNING("%s: watchdog could not be reconfigured", __FUNCTION__);
   }
 
-  while(1){}
 }
 #endif /* ARDUINO_ARCH_MBED */