topic Re: PN532 wakeup with RF level detector parameter from the soft power down mode in NFC

PN532 wakeup with RF level detector parameter from the soft power down mode

minkoocho — Wed, 14 Dec 2016 08:18:39 GMT

Hi,

I tried to wake-up PN532 chip from soft-power-down with RF detector active but it didn't work. The circuit I use is quite smilar to the board from Adafruit (https://www.adafruit.com/product/789) Has anyone succeeded in the wake-up?

Do I need a stronger NFC magnetic field?

Best Regards

Minkoo

Re: PN532 wakeup with RF level detector parameter from the soft power down mode

Jorge_Gonzalez — Tue, 20 Dec 2016 18:00:36 GMT

Hello Minkoo Cho,

Please consider the next points for waking up the PN532 from Soft-Power-Down mode with the RF Field.

- The bit pd_rfleveldet must be set to 0 in the CIU_RFlevelDet register to have the detector active, otherwise it is disabled:

- The bit CIU_wu_en must be set to 1 in the PCR Wakeupen register to enable the RF Field detection wake-up event:

I hope this helps.

Best Regards!,
Jorge Gonzalez

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Re: PN532 wakeup with RF level detector parameter from the soft power down mode

minkoocho — Thu, 22 Dec 2016 04:22:15 GMT

Dear Jorge Gonzalez,

Thanks for your reply. But whenever I read the pin after I set the bit pd_rfleveldet to 0, It only says '1'.

Then, Is this be a hardware problem?

Best regards
Minkoo Cho

Re: PN532 wakeup with RF level detector parameter from the soft power down mode

pecotuntun — Mon, 11 Jan 2021 07:27:33 GMT

i also had problem like minkoocho, i followed your instructions but it still doesn't working, can you suggest more for me how to make it work

Best Regards

pecotuntun

Re: PN532 wakeup with RF level detector parameter from the soft power down mode

pecotuntun — Mon, 11 Jan 2021 11:43:23 GMT

One more question is whether the RF detection Wakeup function will work with the Passive Tag or not

Best Regards

pecotuntun