Introducing FIFO buffer in uart_data_handler function..

[Mani]

I am working with ble_app_uart code, in that I am trying to send continuous data over BLE. But the BLE getting disconnected while sending large data.

So I planned to have an FIFO buffer which should continuously receive and stores the data(whatever the data size). Then the data should be processed and then it should be sent as frame with the length of 20 bytes. So how to introduce a new buffer and how to handle it with default app_uart_get() buffer.

[Saffiq]

Yes the BLE_GATTS_EVT_HVN_TX_COMPLETE was added by me ..I am using SDK 14.2 ..My project is I am trying to send my sensor data which is connected to RXD pin and send it via BLE app UART. My board is nRF52832

[ovrebekk]

Hi Saffiq

Any chance you can try the ble_app_uart example included in SDK v15?

I believe this example is updated to do the buffering like you need, and would save the time needed for you to implement this yourself. 

Best regards
Torbjørn

[Saffiq]

Hi avrebekk, 

I have try ble_app_uart example in the SDK v15. However the problem still the same where after i connected my sensor to the board and suddenly BLE is disconnected and i need to remove back my sensor in order for the board to advertise bluetooth again

[ovrebekk]

Hi Saffiq

In that case I think I will have to reproduce the problem on my end, to make it easier to debug. 

Can you let me know what baud rate you are using, and how much data the sensor is sending? 

Best regards
Torbjørn

[Stagiair]

I have the same issue. I'm sending a Json string to the Bluetooth module over UART. I can send up to 80 characters. When i send more characters the BLE buffer crashes. Baudrate is 115200.