NFCのトピックRe: pn532 i2c issure

pn532 i2c issure

hongfengjiang — Tue, 17 Oct 2017 02:52:50 GMT

hi,guys

I use STM32+PN532 with i2c, but i can't get the connection.

So I want to check whether i must use the following register in my code.thank you!

Re: pn532 i2c issure

Kan_Li — Tue, 24 Oct 2017 06:58:10 GMT

Hi Hongfeng Jiang,

I am sorrry, STM32 is not NXP product, so we could not support on this device, but for your issue, I would recommend checking the waveform of I2C interface for the root cause, for example, the I2C address, the timing, and something like that.

Hope that helps,

Have a great day,
Kan

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Re: pn532 i2c issure

hongfengjiang — Tue, 24 Oct 2017 07:10:13 GMT

hi，Kan

now i have connected pn532 with i2c . after I sent wake up command ,I get the ack and response. But then I send uid get command , the i2c would interrupt. I have try several times and the phenomenon is the same. Can you help me?