Concurrent Central/Peripheral UART

[Maxim]

Hi,

I'am actually trying to develop a BLE based remote, with NRF52832, S132.

This remote must be configured by a smartphone (the remote act as peripheral) and be able to control one equipement (and act as Central).

As i only need to use uart on each side, i've started mixing demo programs ble_app_uart_c.c (central) and ble_app_uart.c (peripheral) without success.

As peripheral: The board advertise correctly, i can connect to it on my smartphone with the app nRF UART v2.0 but the NUS_data_handler seems not receive any message.

As central: When the board try to connect with another board flashed with ble_app_uart.c, the conn_handle indicate 65532 and the role is BLE_GAP_ROLE_INVALID instead of BLE_GAP_ROLE_CENTRAL.

RAM configuration: start: 0x20003DB0, size: 0xC250

My program: ble_app_uart_c.zip

Thanks a lot for your advice to correct these errors !!!

[Jørgen Holmefjord]

Hi,

It does not look like you are handling received advertising reports in your application.

When your central receives an advertising packet, the role will be set to BLE_GAP_ROLE_INVALID, but the event ID will indicate BLE_GAP_EVT_ADV_REPORT.

You should dispatch such events to the on_ble_central_evt() handler. Have a look at for instance the BLE Relay Example (concurrent central/peripheral) for more details about how this is done.

Best regards,

Jørgen

[kishor babu]

Hi Jorgen,

I am also trying to merge the both uart demos.

i have downloaded the maxim code and added necessary files into it, it compiled all good and zero errors but it is not scanning or advertising.

I am using nrf52832 board and sdk 12.3.

could you please help me in this?

[Jørgen Holmefjord]

Did you flash the (correct) softdevice?

[kishor babu]

Hi Jorgen,

Sorry for late reply, I flashed the correct softdevice only but still it is not working.

[kishor babu]

 */
static void ble_evt_dispatch(ble_evt_t * p_ble_evt)
{	
	  uint16_t conn_handle_nb;
	  uint16_t role;
	  
	  ble_conn_state_on_ble_evt(p_ble_evt);
	
	  conn_handle_nb = p_ble_evt->evt.gap_evt.conn_handle;
    role        = ble_conn_state_role(conn_handle_nb);
	
	  SEGGER_RTT_printf(0,"EVT conn handle num %u!!\r\n", conn_handle_nb);
	
	 if(role != BLE_GAP_ROLE_INVALID)
		{
			    if (role == BLE_GAP_ROLE_PERIPH) //MAX
					{
							SEGGER_RTT_printf(0,"PERIPH\r\n");
							on_ble_peripheral_evt(p_ble_evt);
							ble_advertising_on_ble_evt(p_ble_evt);
							ble_conn_params_on_ble_evt(p_ble_evt);
						//dispatch to peripheral application
						ble_nus_on_ble_evt(&m_nus, p_ble_evt);
					}
					
				else	if (role == BLE_GAP_ROLE_CENTRAL)
					{
							SEGGER_RTT_printf(0,"CENTRAL\r\n");
							on_ble_central_evt(p_ble_evt);
							bsp_btn_ble_on_ble_evt(p_ble_evt);
							ble_db_discovery_on_ble_evt(&m_ble_db_discovery, p_ble_evt);
							ble_nus_c_on_ble_evt(&m_ble_nus_c,p_ble_evt);
					
					// If the peer disconnected, we update the connection handles last.
        if (p_ble_evt->header.evt_id == BLE_GAP_EVT_DISCONNECTED)
        {
            on_ble_central_evt(p_ble_evt);
        }
		  }
					
					
		else 
		{
					SEGGER_RTT_printf(0,"INVALID\r\n");
		}

}
		
}
		

Is this the change you suggested to Maxim?