Random Restarts

Esp8266

First try setting the baud rate to 74880:

make terminal COM_SPEED=74880

The random symbols should become readable messages.

If you see repeating messages containing rf_cal[0] !=0x05 then most probably you should initialize the flash memory on your ESP8266 device.

To achieve this do the following:

  1. Check the Hardware configuration especially flash_size setting.

Note

If you’re not sure what size the flash memory is on your device, run make flashid to check.

  1. Run flashinit:

    cd $SMING_HOME/../samples/Basic_Blink
make flashinit

    This resets the flash memory to a default state, erasing any existing application, configuration or data stored there.

  2. Re-program your device:

    make flash

  3. Verify flash data has been written successfully

    make verifyflash

Esp32

Bootloader messages should be visible and may give some indication as to the problem.

If SDK_CUSTOM_CONFIG has been set in your project, or the SDK configuration has otherwise been changed from defaults, try reverting it back to defaults:

make sdk-config-clean
make SDK_CUSTOM_CONFIG=

The ESP IDF framework runs on FreeRTOS and there is a known deadlock problem related to flash memory access if FreeRTOS is initialised and running on both cores. For this reason, the setting CONFIG_FREERTOS_UNICODE=y must be set. See Issue #2653.