write not working - Error 0x06, for tutorial

[PingISTL]

Dear support,

I tried to follow the video here for adding service to https://webinars.nordicsemi.com/developing-bluetooth-low-energy-6, 

Read and notification works fine, but write value doesn't work. I use my phone and running nRFConnect for Mobile.

I also checked the Peripheral LBS sample, it cannot write neither and another BLE application says Error code 0x06, and REQUEST NOT SUPPORTED. description says: "Attribute server does not support the request received from the client."

Could some body help please? I saw similar post, but no reply for it.

Thanks

Ping

[Vidar Berg]

Hello,

Please try to perform a new service discovery and see if helps. On Android you can do it by pressing the 'refresh services' button here:

There is no API to do the same on iOS. But you can clear the BT device cache by toggling Flight mode enable and by that force it to perform a new discovery on the next connection.

[PingISTL]

Thank you for reply, Vidar

I use Android phone, and tried according to your instruction, with Nodic Connect Mobile app, it doesn't say anything, but LED3 on board is not responding to on/off command, by the way, I am not sure I should use Request or Command in Advance option. With the other App - EFR Connect , it says "Characteristics write fail", it is a different failure message.

With the tutorial app - hello_world modified example, don't see anything received on terminal.

Notification works fine for both examples.

What else can I check please?

Ping

[Vidar Berg]

Hi Ping,

Please try the peripheral LBS example again and press the 'refresh services' before you write to the led characteristic. Then if you get the same error, take a screenshot like the one I took and post it here.

Thanks,

Vidar

[PingISTL]

Hello, Vidar

Here it is. Done what you asked, have never seen LED3 on on my nRF52DK board. I use Mobile app on Andoid devive.

Thank you.

Ping

[Vidar Berg]

Hello Ping,

You can swipe right to view the log after you have attempted to write to the LED characteristic. Can you post a picture of the log as well?