https://devzone.nordicsemi.com/f/nordic-q-a/2579/twi-not-working-on-the-nrf51422-with-ant-soft-deviceIt&#39;s possible this is a hardware problem, but what I&#39;m seeing is this... The clock is enabled on pin 0, data on pin 4. With both enabled in exactly the same way, drive mode S0D1, and with an internal pullup, the clock pin works as intended, but theen-USTelligent Community 13Mon, 02 Jun 2014 16:54:40 GMThttps://devzone.nordicsemi.com/thread/10225?ContentTypeID=1Mon, 02 Jun 2014 16:54:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9da9b385-6b43-4b99-8927-c5f93f8303d7Rory Morrison<p>This was a problem with our board after all.</p><div style="clear:both;"></div>