Hi, I found this post on nRF8001 setup issues and it's quite applicable to a problem I am working on. I want to be able to update the device name for my nRF8001 radio. So I added the "writeable device name" in nRFGO studio and the Service Changed GATT attribute that is required to get device name changes to show up on remote devices. And I added a way for a remote device to send my device a new name over the UART service.
I can get a new name and write it from my application to the nRF8001 name. I update the Service Changed attribute to signal handles 1-11 changed and everything works fine (ie name shows up on remote iPhone). Problem is that if a different remote device that supports writing to my name service does change the name I don't think the nRF8001 can report that change. So I want to disallow remote name changes. And it seems like the ble_modify_setup_data example that is provided as part of the BLE Ardiuno library from Nordic is meant to address that exact issue. However, I can't make any sense out of the example.
There is a readme_modify_setup.docx file provided in the BLE Arduino SDK documentation directory that documents how you could change the services.h file to remove write permissions and there is a services_ota_with_pipe_ota_removed.h file in the ble_modify_setup_data example directory that removes the write permissions. But nothing else in the example directory makes any sense relative to the example. I would have thought there might be some tool there that could update a services.h file to do the modifications and recompute the CRC and write out the updates. But there isn't.
I see where the user Eric wrote a Python tool that might do this. Sounds pretty slick but doesn't appear to be accessible. I'm wondering if Nordic does have any tool to make the changes. Actually, I really don't understand why they don't provide an option within nRFGO Studio to allow you to have a locally writeable device name that can't be written from remote devices. Because it doesn't seem like there would be any way to make remote name changes work.
Am I missing something? I think supporting BLE name changes is an important capability. And much of it seems to work. Just the few problems I mentioned above.
Hopefully someone has some suggestions?? Thanks. Fred
