BLE UART without flow control

RE: BLE UART without flow control

Susheel Nuguru — Tue, 21 Jul 2015 12:14:07 GMT

Sergey , could you please update this thread with latest info,

RE: BLE UART without flow control

Susheel Nuguru — Tue, 30 Jun 2015 07:19:47 GMT

zero is a valid Conn_handle BLE_CONN_HANDLE_INVALID = 0XFFFF Why does this fail for you?

RE: BLE UART without flow control

Sergy — Mon, 29 Jun 2015 14:42:25 GMT

indeed that overcomes uart overflow problem, but now there is a problem with BLE connection. in on_connect function conn_handle is zero: p_nus->conn_handle = p_ble_evt->evt.gap_evt.conn_handle;

And when it ries to send the string it checks for BLE_CONN_HANDLE_INVALID and that prevents from sending data.

On the phone I see that its connected to the UART service.

RE: BLE UART without flow control

Sergy — Mon, 29 Jun 2015 14:40:02 GMT

There is no special reason, but SD7.0.0 was stable, so I keep using it.

RE: BLE UART without flow control

Susheel Nuguru — Mon, 29 Jun 2015 09:54:30 GMT

This might work, I have checked the Git hub app_uart_fifo_mod.c: app_uart_get, replace it by below code.

uint32_t app_uart_get(uint8_t * p_byte)
{
    return app_fifo_get(&m_rx_fifo, p_byte);
}

The effect of this is that your driver will keep on going even if there are overflow errors.

RE: BLE UART without flow control

Susheel Nuguru — Mon, 29 Jun 2015 09:36:54 GMT

you are using very very old SDK. is there any specific reason you cannot use a newer one?

RE: BLE UART without flow control

Sergy — Mon, 29 Jun 2015 08:56:21 GMT

Hi Aryan, could you please tell me which one is that? Under S110 directory I dont see any BLE UART examples. (SDK 6.0.1) Thanks, Sergey

RE: BLE UART without flow control

Susheel Nuguru — Mon, 29 Jun 2015 08:52:19 GMT

Hi Sergey, Many have tried UART example in the SDK and they see that it worked as expected when there are overflow errors. I have not tried the github example, but you can try to see if SDK example works for you