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:

[Murugan]

Hi Sigurd,

Thanks for reply. As per your advice disable the hardware flow control uart working fine but not get advertising packet. My application is display the MAC ID and RSSI value in advertising event function.

[Sigurd]

The central is not receiving any advertising packets?

[Murugan]

Then how to find peripherals? ble_event.txt

[Sigurd]

Are you getting the printf "Advertiesing....."? What peripheral are you using?

[Murugan]

yes. i am using nrf connect mobile app based advertiser.