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@Gordon
Yes, it's a bit weird. In the 128 bit case, the majority of the UUID is stored elsewhere with
sd_ble_uuid_vs_add: https://github.com/espruino/Espruino/blob/master/libs/bluetooth/bluetooth_utils.c#L160Then the
->typefield stores an index into this UUID, while->uuidcontains bytes 12 and 13 of the 128 bit UUID.It seems to be side-effect of the softdevice... So either you could implement something similar in ESP32-land, or I guess we could have something more general than
ble_uuid_t- but that would have some pretty huge knock-on effects I believe :(