PN7462: Register for current DPC Gear

johannesdev — Wed, 20 Oct 2021 10:48:57 GMT

Hi,

were are currently developing an application using the PN7462 with 4 DPC gears. Is it possible to read the current gear from a register (when the field is active of course)?

The NFC cockpit has the desired function implemented, but I don't have any clue how to read it within the C application based on the Reader-Lib.

johannesdev_0-1634726570415.png

Thanks and best regards,
Johannes

Re: PN7462: Register for current DPC Gear

Kan_Li — Wed, 27 Oct 2021 09:23:22 GMT

Hi @johannesdev ,

You may have the current AGC value from the following register.

Kan_Li_0-1635326371946.png

but have to calculate the current gear number with help of high/low AGC threshold for each gear, as well as the gear size, gear step size and start gear number. Please kindly refer to https://www.nxp.com/docs/en/application-note/AN11742.pdf for more details.

Hope that makes sense,

Have a great day,
Kan

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PN7462: Register for current DPC Gear

Re: PN7462: Register for current DPC Gear