This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

RTT not appearing in modified ble_app_uart example

    Hello,

I have been developing software on the ble_app_uart example in Segger Embedded Studio with sdk 17.0.2.  The example has RTT enabled but I noticed when I try to use RTT in my modified version that no RTT shows up in the debugging window.  I added various libraries and changed the config file, but did not remove anything or turn off anything in the config file from the example.  I wasn't sure how to troubleshoot this and was wondering what potential problems might be interfering with RTT outputs in the debugging terminal.  Here is my main() code, I can add more if necessary.  

int main(void)
{
    bool erase_bonds;
    ret_code_t rc;

    // Initialize.
    twi_init();
    uart_init();
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();


    /* Register first to receive an event when initialization is complete. */
    (void) fds_register(fds_evt_handler);


    rc = fds_init();
    APP_ERROR_CHECK(rc);

    /* Wait for fds to initialize. */
    wait_for_fds_ready();

    // Start execution.
    printf("\r\nUART started.\r\n");



    //turn on LED3 while on and not in sleep mode
    nrf_gpio_cfg_output(LED2);
    nrf_gpio_pin_clear(LED2);

    NRF_LOG_INFO("Debug logging for UART over RTT started.");



    //button press waits for a button press event or times out and goes to sleep mode if no button press is received in 15 seconds
   
    
    buttonPress(); 

    nrf_delay_ms(100);

    advertising_start(); 

    //advertise for 15 seconds then try to send the data
    nrf_delay_ms(5000);

    //SendTime sends the entire memory, should add a condition to make sure that it's connected to BLE, potentially only send new entries etc.
    SendTime(); 

    //wait 5 seconds after sending the data before entering sleep mode, just here to give time to read in devtools for debugging
    nrf_delay_ms(5000);

    sleep_mode_enter_wakeup_enabled();
    
   


    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
    }
}

Parents
  • Hi Jake

    The RETARGET_ENABLED will let youinclude the retarget layer for stdio functions. This is necessary to use printf to transmit data over UART, which is what your application tried doing when you had this define set to 1 and would be why the logging didn't go to RTT.

    By default, all functions should already only be called from inside the SDK, with the path being set to ../../../SDK, setting the path prior to the SDK version to be relative.

    Best regards,

    Simon

Reply
  • Hi Jake

    The RETARGET_ENABLED will let youinclude the retarget layer for stdio functions. This is necessary to use printf to transmit data over UART, which is what your application tried doing when you had this define set to 1 and would be why the logging didn't go to RTT.

    By default, all functions should already only be called from inside the SDK, with the path being set to ../../../SDK, setting the path prior to the SDK version to be relative.

    Best regards,

    Simon

Children
No Data
Related