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.  

[William.wei]

well, you need to add childimage in central_uart example(just copy child_image from throughput example should be ok)

[Carl Richard]

This is also important! Thanks for the input.

Best regards,
Carl Richard

[William.wei]

hi Richard,

i have tested the dle before, just set CONFIG_BT_USER_DATA_LEN_UPDATE=y in central prj.conf is enough . no need that api anymore.(i used sdk  ble_app_uart example as peripheral device)

Regards,

William.

[Leo_LYF]

Hi,Richard!

Thanks for your answer。In Fact，After studied the NCS Throughput sample，I 've used the cofiguration to config my project according the Throughput sample . And it works. But it seemed that there are some cofiguration  that I don't want to. My question is: If i just want to do the  Data Length Extension. What exactly configuration I need to do?

Best regards,

Leo

[Carl Richard]

Hi again!

Apologies for the delayed answer here. I think keeping the configuration from the hci_rpmsg child image of the Throughput sample, as well as CONFIG_BT_USER_DATA_LEN_UPDATE=y in the application should be sufficient, but I haven't tested this properly. Please report back if that doesn't work!

You can at least remove the PHY related configurations.

Best regards,
Carl Richard