8000 [NRF] Are there any plans to support the NFC functionality of the nRF52.. · Issue #5095 · micropython/micropython · GitHub
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[NRF] Are there any plans to support the NFC functionality of the nRF52.. #5095

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rolandvs opened this issue Sep 11, 2019 · 3 comments
Open

[NRF] Are there any plans to support the NFC functionality of the nRF52.. #5095

rolandvs opened this issue Sep 11, 2019 · 3 comments
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@rolandvs
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The nRF52 series have an embedded NFC slave that can function as a pairing method, activation from sleep, and even as an alternative way to configure a device.
@glennrub Are there any plans to expose this part of the chip?
@hoihu
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hoihu commented Sep 11, 2019

I'd support that too.

Unfortunately the NFC part seems to be a bit more complicated as it uses a closed sourced library for tag emulation ("t4t").

We have asked for a "pure" nrfx example without this library, but the response was not convincing (see here: NordicSemiconductor/nrfx#51 resp. https://devzone.nordicsemi.com/f/nordic-q-a/41705/trouble-with-nrfx-nfct-driver), so essentially this lead to not use the micropython port for the nrf processor in our product.

As for OOB pairing, it requires yet another (crypto) library, so I guess that must be carefully evaluated as well.

I'm not sure why the nrfx's NFC part is using this binary blob. I've looked through the tag emulation protocol and it doesn't seem to be overly complicated to implement.

@glennrub
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Hi @rolandvs , @hoihu

@glennrub Are there any plans to expose this part of the chip?

Instead of trying to figure out the plans for NFC I managed to squeeze in some hours this afternoon to show a proof of concept. I'm not sure what requirements you guys really have, but i guess the PR can be used as a starting point #5104 to discuss what kind of API would make sense. In theory it should also be possible to extend it to also include Tag4 as there is a library for this as well.

@rolandvs
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rolandvs commented Sep 12, 2019 •
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Super

tannewt added a commit to tannewt/circuitpython that referenced this issue Aug 5, 2021
@tannewt
Merge pull request micropython#5095 from dhalbert/raytac_mdbt50q-rx
4bcf0d4 
Add raytac_mdbt50q-rx
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@glennrub @rolandvs @hoihu @dpgeorge
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