nrf52832 Custom / SDK V15 / ble_app_uart / OK with Android / KO with iOS

[JohnM]

Hello,

We have a custom board based on nRF52832, built an application base on SDK V15/ble_app_uart 

It works fine with Android: we can send string over BLE but it doen's work with iOS: the UUID are not the same.

in Android we see the UUIDs defined in the example:

#define NUS_BASE_UUID                  {{0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x00, 0x00, 0x40, 0x6E}} /**< Used vendor specific UUID. */

But in iOS, we see different UUIDs and the UUIDs we expect are not shown.

How come that the UUIDs are changed by iOS?

Thanks.

[Vidar Berg]

Hello,

Could be that the iphone has cached services from a previous session, do you see the same if you toggle flight mode enable, then re-connect? Note that the service changed characteristic should be used if attributes handles are subjected to change. More information about attribute caching can be found in core spec 5, vol 3, part G, section 2.5.2. 

[JohnM]

Hello,

After many attemps, there's nothing wrong because we used several other IoS devices and it works! (same UUID as Android...).

Apparently, the first IoS device we used has kept in cache the UUID from a previous firmware version (it's not easy to get rid of this cache apparently).

So ticket to be closed.

John.