Hi,
Iam working on a nrf52840 and trying to achieve data flow from BLE device using NUS and transfer this data through UART.Uart is configured as (TX:P1.01,RX:P1.02).Iam receiving data in
nus_data_handler, and expecting app_uart_put will send data to TX which can be received by UART connected device RX.I can see that data is looping back to sender.Iam using NUS added
ble_peripheral\ble_app_template
static void uart_init(void) { uint32_t err_code; app_uart_comm_params_t const comm_params = { // .rx_pin_no = RX_PIN_NUMBER, // .tx_pin_no = TX_PIN_NUMBER, .rx_pin_no = NRF_GPIO_PIN_MAP(1, 1), .tx_pin_no = NRF_GPIO_PIN_MAP(1, 2), .rts_pin_no = RTS_PIN_NUMBER, .cts_pin_no = CTS_PIN_NUMBER, .flow_control = APP_UART_FLOW_CONTROL_DISABLED, .use_parity = false, #if defined(UART_PRESENT) .baud_rate = NRF_UART_BAUDRATE_115200 #else .baud_rate = NRF_UARTE_BAUDRATE_115200 #endif }; APP_UART_FIFO_INIT(&comm_params, UART_RX_BUF_SIZE, UART_TX_BUF_SIZE, uart_event_handle, APP_IRQ_PRIORITY_LOWEST, err_code); APP_ERROR_CHECK(err_code); } static void nus_data_handler(ble_nus_evt_t *p_evt) { ret_code_t ret_val; if (p_evt->type == BLE_NUS_EVT_RX_DATA) { uint32_t err_code; NRF_LOG_INFO("Received data from BLE NUS. Writing data on UART."); NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length); for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++) { do { err_code = app_uart_put(p_evt->params.rx_data.p_data[i]); if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY)) { NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code); APP_ERROR_CHECK(err_code); } } while (err_code == NRF_ERROR_BUSY); } if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r') { while (app_uart_put('\n') == NRF_ERROR_BUSY) ; } } else if (p_evt->type == BLE_NUS_EVT_TX_RDY) { flag_transmitted = 1; NRF_LOG_INFO("TX OK"); } else if (p_evt->type == BLE_NUS_EVT_COMM_STARTED) { NRF_LOG_INFO("BLE_NUS_EVT_COMM_STARTED"); //TODO : add send START command if required // SendData(); flag_connected = 1; } }
Please advice whether and how can I use this.
Thanks
Syam