previous BLE stack program not erased

RE: previous BLE stack program not erased

Sundar_santhanam@1998 — Thu, 19 Dec 2019 12:07:17 GMT

Thank you sir, since I tested using iOS the gatt table is not flushed and the problem occurs again and again. Now I switched to a different phone and it started working . Thank you so much . We came to a conclusion that board wasn’t working but you helped us.

RE: previous BLE stack program not erased

Sundar_santhanam@1998 — Thu, 19 Dec 2019 11:25:16 GMT

Hi sir,

I have done forget device in my phone and flashed new code into my nRF device. Still I get the same issue my previous program is being advertised

RE: previous BLE stack program not erased

tesc — Thu, 19 Dec 2019 10:10:25 GMT

Hi,

This sounds like a caching issue. Since the BLE address of the device is the same, the smartphone might have cached the GATT table, and when it connects again (with a new example on the board) it still shows the same GATT table.

Usually, turning Bluetooth off and on again (properly through the settings menus not by any shortcut switches), or entering Airplane mode and going back, or both, will work for flushing the cache. That way, the next time the phone connects to the device, it will run the database discovery procedure (i.e. read the new, correct GATT table.)

If you connect to the device using a different phone, that has never connected to the device before, you should see that the new application has indeed been correctly flashed to the device and that the issue then must be caching on the other smartphone.

Regards,
Terje