BLE UART without flow control

[Murugan]

Dear Nordic Team,

Thanks for support.

Currently i am trying BLE UART central (ble_app_uart_c) example without flow control. But its not work. My SDK is 11.0. I want to know the possible for ble uart work without flow control.

[Sigurd]

Hi,

First you will need to disable the flow-control. In the function uart_init() make sure you have APP_UART_FLOW_CONTROL_DISABLED. The function will then look like this:

static void uart_init(void)
{
    uint32_t err_code;

    const app_uart_comm_params_t comm_params =
      {
        .rx_pin_no    = RX_PIN_NUMBER,
        .tx_pin_no    = TX_PIN_NUMBER,
        .rts_pin_no   = RTS_PIN_NUMBER,
        .cts_pin_no   = CTS_PIN_NUMBER,
        .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
        .use_parity   = false,
        .baud_rate    = UART_BAUDRATE_BAUDRATE_Baud115200
      };

    APP_UART_FIFO_INIT(&comm_params,
                        UART_RX_BUF_SIZE,
                        UART_TX_BUF_SIZE,
                        uart_event_handle,
                        APP_IRQ_PRIORITY_LOW,
                        err_code);

    APP_ERROR_CHECK(err_code);
}

You must also turn off the flow-control in your terminal, and choose the correct baudrate.

In Termite the settings would look something like this:

[Sigurd]

Yes, the central is receiving the advertising packet you are sending with the mobile app. RSSI and PEER_ADDR is included in the advertising packet.