[Qeustion] data send error

[seungwooWoo]

HI, I am seungwoo

I am developing data transmission using nrf52810.

A 300-kilobyte file is divided into 220 bytes and transmitted continuously.

11-27 17:24:24.416 W 15138 lbs_tag_service woo send4 packetInteration = 212total = 1543
11-27 17:24:24.418 E 2945 bt_att gatt_act_write() failed op_code=0x52 rt=143
11-27 17:24:26.236 W 15138 lbs_tag_service woo send4 packetInteration = 213total = 1543

If I send data, periodically, the above bt_att gatt_act_write () failed op_code = 0x52 rt = 143 occurs.

This error delays a lot of time.

GATT_CONNECTION_CONGESTED

added in API level 21

public static final int GATT_CONNECTION_CONGESTED

A remote device connection is congested.

Constant Value: 143 (0x0000008f)

I want to know why this error occurs.

I am using example ble_app_uart.

[Hung Bui]

Hi Seungwoo, 

Is this a duplicated case from this case: devzone.nordicsemi.com/.../218754 ? 

I would suggest to continue on the other case. 

Please be aware that we only handle the other side of the connection on the nRF5x side, we don't have any control over the Android implementation. We can try to help you to improve the performance but we can't fix the issue on Android phone.