https://devzone.nordicsemi.com/f/nordic-q-a/11313/using-nrf51822-as-twi-i2c-slaveHello, I found some posts discussed before. I2C/TWI slave with nRF51822 [closed] Using NRF51X22 as TWI Slave In SD8.0, SDK10, does it still only support the TWI Master? Can I implement TWI Slave functions(up to 400kBit/s)? and how to implementen-USTelligent Community 13Fri, 15 Jan 2016 02:00:16 GMThttps://devzone.nordicsemi.com/thread/42556?ContentTypeID=1Fri, 15 Jan 2016 02:00:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:65b07186-079f-4beb-b66f-3540d481ca09sara<p>I got it, thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/42555?ContentTypeID=1Thu, 14 Jan 2016 11:26:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0dcf7e27-0050-44ef-be97-246534e7ea4bPetter Myhre<p>There are no hardware support for TWI slave in nRF5, and I&#39;m not aware of any example code that implements it in software.</p><div style="clear:both;"></div>