freeRTOS with RTT Logging causes Hardfault.

[c cook]

MY application is using SDK 12.2, SD132 v3.1 and freeRTOS. I'm trying to debug a sensor that uses TWI. When I enable logging. #define NRF_LOG_ENABLED 1, NRF_LOG_BACKEND_SERIAL_USES_UART 0 and, NRF_LOG_BACKEND_SERIAL_USES_RTT 1

I start to get hardfaults. I've implemented the fix here, but I still get the hardfaults. If I set NRF_LOG_ENABLED 0, the hardfaults stop.

To use logging with with freeRTOS I enable it with:

#if NRF_LOG_ENABLED   
		err_code = NRF_LOG_INIT(NULL);
    APP_ERROR_CHECK(err_code);

    // Start execution.
    if (pdPASS != xTaskCreate(logger_thread, "LOGGER", 256, NULL, 3, &m_logger_thread))
    {
        APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
    }

#endif //NRF_LOG_ENABLED

Which I copied from the ble_app_hrs_freertos example.

Any ideas as to why I'm getting Hardfaults when I turn on logging, or suggestions on how to debug it? Thanks

[Susheel Nuguru]

not sure, i tried SDK 12.3 and this works fine. have you tried this