pn532 i2c issure

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pn532 i2c issure

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hongfengjiang
Contributor I

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!

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Kan_Li
NXP TechSupport
NXP TechSupport

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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hongfengjiang
Contributor I

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?

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