https://devzone.nordicsemi.com/f/nordic-q-a/5303/twi-sw-setting-the-frequency-rate-cant-findHello! Looking around and reading a bunch of posts, I found little information on how to initialize the TWI sw frequency, which currently is 100 kHz( calculated it with a test). Is there are way to init the Frequency rate for the TWI software ? Settingen-USTelligent Community 13Thu, 29 Jan 2015 12:24:13 GMThttps://devzone.nordicsemi.com/thread/18548?ContentTypeID=1Thu, 29 Jan 2015 12:24:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96f463a9-c9ff-4195-be94-e78cdadd61edStian R&#248;ed Hafskjold<p>Since the SW version uses bit-banging it doesn&#39;t really make any sense to &quot;init the frequency rate&quot;. The change on the GPIOs happens as fast as the processor is able to process the code. So, a factor that determines the speed is how well the code is optimized.</p> <p>In <strong>twi_master.h</strong> you have a <code>NRF_DELAY()</code> definition, which is used some places in the <strong>twi_sw_master.c</strong> code. You can try to set this to 1us. Or maybe remove it completely.</p><div style="clear:both;"></div>