How to trigger Buttonless DFU using a customized Android APP?

[RJ Fang]

Hi,

Hope you are doing well!

I am trying to do Buttonless DFU on our own Android APP. I have finished programming on nrf end and succeed doing DFU on 'nrf connect' app and now I am trying to do the same with my own Android app.

Based on the buttonless dfu example code, it seems like dfu is trigger by Read/Write Authorization request event: 'BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST'.

So, my question is: How can I trigger BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST event on my own Android APP.

FW: nrf52840

SDK: 15.0

Any help will be appreciate! Thanks!

[Vidar Berg]

Hello,

Are you testing with nRF connect or a custom app, and did you remember to enable indications first (Buttonless Secure DFU Service)? I thought the phone would default to write requests because the characteristic supports it (not write command).

[RJ Fang]

Hi!

Thank you for the replay.

Actually I am testing with my custom app. I don't know how to write requests using my custom app because I didn't find any function to do so in Android API.

[Vidar Berg]

Hi,

Have you tried to change the write type as suggested in this stackoverflow post: https://stackoverflow.com/questions/51041629/ble-how-to-send-write-request-instead-of-write-command ?

[RJ Fang]

Thank you Vidar! This helps me a lot!