https://test-devzone.nordicsemi.com/f/nordic-q-a/86780/twi-comunication-to-read-write-registerHi, I&#39;m using nRF52832 with BME688 Bosch sensor. I&#39;m using APIs that are provided by Bosch, but I have to adapt them to nRF52832 microcontroller. In particular, I&#39;m not sure if the comunication with TWI is correct. I write this two functions toen-USTelligent Community 13 Non-ProductionFri, 08 Apr 2022 13:09:23 GMThttps://test-devzone.nordicsemi.com/thread/362618?ContentTypeID=1Fri, 08 Apr 2022 13:09:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba4e0c04-626a-4d19-8def-bf827a0cdf17user2111<p>Sounds to me that the next step is looking at the serial data with a logic analyzer.</p> <p>Kenneth</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/362593?ContentTypeID=1Fri, 08 Apr 2022 12:27:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bc4b5a14-b418-4e7a-b749-488722c751eeuser114346<p>Hi, yes I started with twi scanner example, and I see that the sensor is correctly connected. Also, I use TWI to comunicate with other sensor (for these sensors the functions were already ready).</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/362591?ContentTypeID=1Fri, 08 Apr 2022 12:20:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7d7abcc-78be-44cf-8555-22b2d75f6c49user2111<p>Anything can be wrong here, I would have started with a logic analyzer trace to see if there is NACK or ACK on the serial data. For instance you may start with the twi scanner example from the nRF5 SDK as a start to ensure that you have the correct twi address of the sensor. Make sure that there are e.g. 10kohm pull up resistors on the twi pins.</p> <p>Kenneth</p><div style="clear:both;"></div>