Reading 808080 while connecting PN532 module with nRF52840 using I2Chttps://devzone.nordicsemi.com/f/nordic-q-a/74448/reading-808080-while-connecting-pn532-module-with-nrf52840-using-i2cHello, I&#39;m trying to use PN532 module with nRF52840 using I2C. the data can be sent, but when it comes to read it, IRQ keeps high, so it reads 808080 .. I added a nrf_delay_ms(1) just before reading function, it worked fine (as it is shown in the photoen-USTelligent Community 13Tue, 27 Apr 2021 21:53:45 GMTRE: Reading 808080 while connecting PN532 module with nRF52840 using I2Chttps://devzone.nordicsemi.com/thread/307111?ContentTypeID=1Tue, 27 Apr 2021 21:53:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dc52f623-c58e-4e67-b942-2d651bdc6bcachaima nikolas<p>Hi. it&#39;s received from the TWI. it&#39;s working well now.. Thank you. I commented some&nbsp;<span>unuseful lines I added in &quot;main.c&quot;. It seems like they were causing the problem. So the example needs a nrf_delay_ms(1) in adafruit_pn532_data_read function and it will work perfectly.</span></p><div style="clear:both;"></div>RE: Reading 808080 while connecting PN532 module with nRF52840 using I2Chttps://devzone.nordicsemi.com/thread/307057?ContentTypeID=1Tue, 27 Apr 2021 13:58:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:36ad4531-3505-4f50-9d69-c7873431f17bJ&#248;rgen Holmefjord<p>Hi,</p> <p>Is the data in the log what is received from the TWI, or is it what is received by the NFC reader?&nbsp;</p> <p>What modifications have you made to the example? Please post your code.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>