Printf() in NRF51

Question

Hi!,

UART works fine with nrf-ble-tutorial-characteristic-CompletedCode in my nRF51-DK but I'm trying to implement in my application but not works.

These are my includes:

#include <app_error.h>
#include <app_timer.h>
#include <app_uart.h>
#include <app_util.h>
#include <app_util_platform.h>
#include <ble.h>
#include <ble_advdata.h>
#include <ble_advertising.h>
#include <ble_conn_params.h>
#include <ble_gap.h>
#include <ble_gatt.h>
#include <ble_hci.h>
#include <ble_stack_handler_types.h>
#include <ble_types.h>
#include <boards.h>
#include <bsp.h>
#include <bsp_btn_ble.h>
#include <device_manager.h>
#include <nrf_error.h>
#include <nrf_sdm.h>
#include <nrf_soc.h>
#include <nrf52_bitfields.h>
#include <pca10040.h>
#include <pstorage.h>
#include <pstorage_platform.h>
#include <sdk_errors.h>
#include <softdevice_handler.h>
#include <stdbool.h>
#include <string.h>
#include <sys/_stdint.h>
#include "custom_service.h"


static void uart_events_handler(app_uart_evt_t * p_event)
{
    switch (p_event->evt_type)
    {
        case APP_UART_COMMUNICATION_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_communication);
            break;

        case APP_UART_FIFO_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_code);
            break;

        default:
            break;
    }
}


/**
 * @brief Inicialización UART.
 *
 */
static void uart_config(void)
{
    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_events_handler,
                       APP_IRQ_PRIORITY_LOW,
                       err_code);

    APP_ERROR_CHECK(err_code);
}

And my main thread:

int main(void)
{   
    uint32_t err_code;
    bool erase_bonds;

    uart_config();
    printf("\033[2J\033[;HTest UART on NRF51\r\n");

    // Inicializa.
    timers_init();
    buttons_leds_init(&erase_bonds);
    ble_stack_init();
    device_manager_init(erase_bonds);
    gap_params_init();
    servicios_init();
    advertising_init();
    conn_params_init();

    // Inicia ejecución.
    application_timers_start();
    err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
    APP_ERROR_CHECK(err_code);

    // Entra en el loop principal.
    for (;;)
    {
        power_manage();
    }
}

Baud rate of minicom is 38400.

Can you say me where is the error? Thanks.

Regards

Printf() in NRF51

Top Replies