How to frame the Apple NI's UWBConfigurationData field in the Accessory Configuration Data per Apple NI doc

Ultra-Wideband
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1

According to Apple’s “Nearby Interaction Accessory Protocol Specification Release R2 Developer Preview” 3.4.2,
Nearby-Interaction-Accessory-Protocol-Specification-Release-R2.pdf (413.7 KB), one of the field called UWBConfigData I cannot find any specific information wrt. how to setup the message.

I looked up the DWM3000 API Guide document, there is message struct call dwt_config_t, is this the same as what Apple talks about? I tried to use this structure to compose a message, but the iOS App always rejects this message prompting this is invalid configuration.

Can someone point me to the right direction?

2

Unfortunately these configs (AccessoryConfigurationData/UWBConfigData and AppleShareableConfigurationData/configData) are not documented, but they definitely are not dwt_config_t.

Mostly UWBConfigData seems to be always the same, with only the last two bytes changing according to the device UWB MAC short address.

3

thank you! I also noticed the last 2 bytes differences.