UART NUS Data length changed

RE: UART NUS Data length changed

Hakon — Tue, 02 Oct 2018 08:45:51 GMT

Ok, can you please send me all of your project files so that I can try to debug it?

Dhillon — Mon, 01 Oct 2018 18:27:12 GMT

Hi Hakon

I changed to 27 but still the length is getting changed to

<info> app: Data len is set to 0xB6(182)

I notice in sdk_config.h have this macro as well which might be playing role in the change of length:

NRF_SDH_BLE_GATT_MAX_MTU_SIZE

What would be possible value to have 20 Byte payload only.

Thanks

Bhupinderjeet Singh

Hakon — Mon, 01 Oct 2018 12:56:06 GMT

The lowest value possible for NRF_SDH_BLE_GAP_DATA_LENGTH is 27 so that's probably your best option.

Dhillon — Fri, 21 Sep 2018 15:12:42 GMT

Hi Hakon

Okay I want to keep data length 20 bytes.

What will be the value of NRF_SDH_BLE_GAP_DATA_LENGTH ??

And what is the calculation to know how much will be the data length depending upon NRF_SDH_BLE_GAP_DATA_LENGTH.

Thanks

Bhupinderjeet Singh

Hakon — Fri, 21 Sep 2018 11:22:42 GMT

It is probably because NRF_SDH_BLE_GAP_DATA_LENGTH in sdk_config is set to 251, and the data length has been negotiated to 182.