What size is device number in Channel ID (really)?

[TomWS]

In the ANT Message Protocol doc, section 7.1.1.1, and in example code, the Device Number is treated as a uint16_t and shown as a two byte field in the flagged extended data message. However, the MSB is always received as 0 and, looking at the definition of the ant_channel_config_t, device_number is defined as a uint8_t, meaning that the MSB will be lost on setting this field.

What size is it SUPPOSED to be?

Tom

[testy]

IMHO ant_channel_config.h (both SDKs 9 and 10) is buggy. Device Number is really 16 bits as stated here, ant_parameters.h uses two bytes (ANT_ID_DEVICE_NUMBER_HIGH_OFFSET/ANT_ID_DEVICE_NUMBER_LOW_OFFSET) too.

Next issue to add.

[TomWS]

Thank you, this clarifies things significantly! So ISTM, the 'workaround' would be to edit ant_channel_config.h and fix the uint8_t device_number element to uint16_t device_number. Being a newbie to this environment, I'll ask, do you see any downside to this? (other than I'll have to rebuild my apps, which, at this point is pretty easy!).

[Petter Myhre]

Seems to be a bug, reported. Should be fixed in SDK 11.