topic I want to simple source code about pn512 i2c in NFC

I want to simple source code about pn512 i2c

agafe000 — Tue, 14 Apr 2020 09:17:32 GMT

i use pn512 chip.

I need to i2c source code about pn512.

I downloaded the example source code, but I don't know what to use

function is pn512+ucom(nrf51822) nfc leader.

NFC card is separately.

I want to i2c simple source code.

Which example should I use?

Re: I want to simple source code about pn512 i2c

IvanRuiz — Wed, 15 Apr 2020 00:50:32 GMT

Hello,

You may find it helpful to refer to the NFC reader library for PNEV512B and look for the initialization process for I²C. The examples are made for SPI communication mainly, but you may look for NXPBUILD__PHBAL_REG_LPCOPEN_I2C and adapt it to your specific implementation.

BR,

Ivan.

Re: I want to simple source code about pn512 i2c

AndriiD — Sun, 13 Feb 2022 00:20:37 GMT

I tried to understand this library but it seems that it was written on purpose so complicated that nothing was clear. I have a slightly different question. I am also trying to use i2c. I can read the registers, but I can't write anything in them. I can not understand what the problem is. maybe there are some nuances when writing registers? I did not find this in the documentation. I understand how writing works in I2C protocol and writing function dones without errors but after this register doesn't change.