NCS: Central UART Sample and Peripheral UART Sample Data Length Extension

[Leo_LYF]

Hi, I am using the Nordic nRF53DK, with the Segger IDE, in the NCS 1.5.0 release.

I'm playing around the Data Length Extension with the Sample of the Central UART and Peripheral UAR  using nRF53DK both.

Acorrding to the sample of through,I've added a hci_rpmsg.conf file in a "child_image" folder and added there my configuration extension for both project:

I also increasing the value of MTU and set the CONFIG_BT_USER_DATA_LEN_UPDATE in both Sample project :

Including, I've added the code in both project according to the throughput:

When I build and run the both project,  the log is:

central

perpheral

Note that the Data Length Extension doesn't work. How to change it? In a init way.  

[Carl Richard]

Hello, Leo!

Have you studied the NCS Throughput sample? This implements several throughput increasing features, including Data Length Extension. Based on what you write here it seems like both devices are waiting for a data length parameter update, but it's not initiated by any of them. I suggest checking out the function connection_configuration_set where data length is set using bt_conn_le_data_len_update.

Best regards,
Carl Richard