How to completely turn off debugging and logging

[tyler]

I am using the ble_peripheral template that comes in Nordic SDK 8.1. I setup uart logging and also debugging with the following lines of code:

void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
    #define DEAD_BEEF                       0xDEADBEEF                                  /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
    app_error_handler(DEAD_BEEF, line_num, p_file_name);
}

void uart_error_handle(app_uart_evt_t * p_event)
{
    if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_communication);
    }
    else if (p_event->evt_type == APP_UART_FIFO_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_code);
    }
}

/**@brief Function for initializing the UART.
 */
void uart_init(void)
{
  #define UART_TX_BUF_SIZE           256                                /**< UART TX buffer size. */
  #define UART_RX_BUF_SIZE           1                                  /**< UART RX buffer size. */

    uint32_t err_code;
    const app_uart_comm_params_t comm_params =
       {
           RX_PIN_NUMBER,
           TX_PIN_NUMBER,
           RTS_PIN_NUMBER,
           CTS_PIN_NUMBER,
           APP_UART_FLOW_CONTROL_DISABLED,
           false,
           UART_BAUDRATE_BAUDRATE_Baud38400,
       };
    APP_UART_FIFO_INIT(&comm_params,
                          UART_RX_BUF_SIZE,
                          UART_TX_BUF_SIZE,
                          uart_error_handle,
                          APP_IRQ_PRIORITY_LOW,
                          err_code);
    APP_ERROR_CHECK(err_code);
    app_trace_init();
}

Now I need to know how I would go about completely turning off debugging, error logging, uart logging, and anything else in that nature that doesn't need to be on for code that is launched on the device.

[Hung Bui]

Hi Tyler,

By default you can turn off and on trace log by defining ENABLE_DEBUG_LOG_SUPPORT or not. The macro define will control if the log module will be implemented or not. I'm not sure why you need to add those above function in. Also please be aware that SDK v8.x is very old. The last SDK that support nRF51 is SDK v12.

[tyler]

Where would that be defined? I searched the project and couldn't find ENABLE_DEBUG_LOG_SUPPORT defined anywhere. Is it possible that since I'm using printf() to print to UART there is a different way to disable it?

[Hung Bui]

You can define it in the preprocessor symbols in C/C++ tab in project setting if you use Keil. The symbols is mentioned in the documentation.
You can use printf(), but it's recommended to use app_trace_log() instead, as it's easy to turn off and on logging with the symbol.