TWI Master/Slave frequency and delayhttps://devzone.nordicsemi.com/f/nordic-q-a/117444/twi-master-slave-frequency-and-delayHi. I tried using the TWI master and slave drivers on 2 different nRF52840DK boards. The 100KHz frequency is perhaps a little high and I will see how to lower it by acting on the FREQUENCY reg to have more squared signals. However, I was unable toen-USTelligent Community 13Fri, 20 Dec 2024 16:07:35 GMTRE: TWI Master/Slave frequency and delayhttps://devzone.nordicsemi.com/thread/515979?ContentTypeID=1Fri, 20 Dec 2024 16:07:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8cf65b1b-7e4e-4e3a-9511-0c91638972e1H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>It looks like the TWIS is performing clock stretching. Can you share details on how you have implemented this in software?</p> <p>Here&#39;s how the hardware peripheral is described:</p> <p><a href="https://docs.nordicsemi.com/bundle/ps_nrf52840/page/twis.html#ariaid-title3">https://docs.nordicsemi.com/bundle/ps_nrf52840/page/twis.html#ariaid-title3</a></p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>RE: TWI Master/Slave frequency and delayhttps://devzone.nordicsemi.com/thread/515955?ContentTypeID=1Fri, 20 Dec 2024 14:41:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fd074099-1ad3-4ce8-a707-f7b18586f26bremtec<p>Ok. I created a customized I2C Master driver to verify the TWIS response: during writing, the ACK is recognized, and it listens to the first byte, but then blocks SCL for 2-3 msec and does not allow continuing.<br />Has anyone encountered this behavior before?</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/IMG_5F00_20241220_5F00_153151500.jpg" alt=" " /></p><div style="clear:both;"></div>RE: TWI Master/Slave frequency and delayhttps://devzone.nordicsemi.com/thread/515805?ContentTypeID=1Thu, 19 Dec 2024 15:55:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a0eaf4c9-da03-4aed-abfa-486710bf7bcbremtec<p><span>HI. The sample I used sets interrupt for the twis, but does not use interrupt for the twim: could this be what causes that delay in handling the read?</span><br /><span>Probably due to rtos! Is this correct?</span><br /><span>I&#39;m using nrf connect sdk 2.3.0.</span></p><div style="clear:both;"></div>