Hi forum,
I would like to capture ANT/ANT+ packets that are transmitted over the air. I am using a simple ANT-BROADCAST example from the nrf52 dev kit. I searched this forum, the download section and googled alot to find out details on the ANT protocol "over the air" "radio modulation".
- from my understanding all documentation related to "packet structure" found in the download section documents only references to "the SERIAL packet structure from host to ANT-transceiver" - please correct me if I am wrong.
- in other documents I find rare info about the radio modulation type: GFSK with 160 or 250kb deviation is used at a 1Mbit datarate - is this correct? any place to find official specs on that?
- I tried to simple grep for the transmitted BROADCAST data in GFSK demodulated coming from my SDR and did not have real success with that. so I asked myself if some kind of data whitening is used for over the air traffic?
- I think none of the ANT documentation mentions GFSK at all and I ask myself why you don't write a word on demodulation - I am very sorry in advance if I was to stupid to find infos on that - but I am very sure it does not exist.
Is there ANY known method or product to capture ANT packet that are transmitted over the air - I am NOT talking about serial or usb dump of the communication between host->ant_transmitter here? - if not ... why?
It might be very important to analyse ANT in the very bussy 2.4ghz band together with all the other known protocols....
