RE: problem using ble_uart to send data from pc to smartphone by nrf connect

dejans — Thu, 03 Feb 2022 16:47:15 GMT

Hi,

I noticed that you accidentally tagged nRF Connect SDK, but the example requires nRF5 SDK.
I have tested your example and didn't have any issues with your corrected version.

Best regards,
Dejan

RE: problem using ble_uart to send data from pc to smartphone by nrf connect

anaglez97 — Thu, 03 Feb 2022 11:33:50 GMT

void uart_event_handle(app_uart_evt_t * p_event)
{
    static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
    static uint8_t index = 0;
    uint32_t       err_code;
    
    switch (p_event->evt_type)
    {
        case APP_UART_DATA_READY:
            UNUSED_VARIABLE(app_uart_get(&data_array[index]));
            index++;

            if ((data_array[index - 1] == '\n') ||
                (data_array[index - 1] == '\r') ||
                (index >= m_ble_nus_max_data_len))
            {
                if (index > 1)
                {
                    NRF_LOG_DEBUG("Ready to send data over BLE NUS");
                    NRF_LOG_HEXDUMP_DEBUG(data_array, index);
                    NRF_LOG_INFO("entramos en la funcion");
                    printf("\r\nel mensaje que estamos enviando es: %s\r\n",data_array);

                    do
                    {
                        uint16_t length = (uint16_t)index;
                        err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
                        if ((err_code != NRF_ERROR_INVALID_STATE) &&
                            (err_code != NRF_ERROR_RESOURCES) &&
                            (err_code != NRF_ERROR_NOT_FOUND))
                        {
                            APP_ERROR_CHECK(err_code);
                        }
                    } while (err_code == NRF_ERROR_RESOURCES);
                }

                index = 0;
            }
            break;

        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;
    }
}

i changed this function and it kinda works, the problem is that i have to send data twice for me to get the data that i want, it is stored in the memory here is a picture: "el mensaje que estamos enviando es"(the message we are sending is) :