https://devzone.nordicsemi.com/f/nordic-q-a/71870/spim-not-working-after-porting-ncs-from-1-2-0-to-1-4-2SoC nrf52840, nrf connect SDK v1.4.2 we have a board with 3 sensors connected with independent SPI interfaces. after porting the code to ncs v1.4.2 from v1.2.0 the SPI communication stops working! I checked all the SPI pins (CS, mosi and clock) anden-USTelligent Community 13Tue, 23 Feb 2021 10:10:33 GMThttps://devzone.nordicsemi.com/thread/295780?ContentTypeID=1Tue, 23 Feb 2021 10:10:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47603321-f179-421c-ad55-7d05045bf271GNotman<p>You may also need to modify your gpios specifications above. e.g:</p> [quote userid="93859" url="~/f/nordic-q-a/71870/spim-not-working-after-porting-ncs-from-1-2-0-to-1-4-2"]<span>cs-gpios</span><span> = &lt;&amp;</span><span>gpio1</span><span> </span><span>7</span><span> </span><span>0</span><span>&gt;;</span>[/quote] <p><br />cs-gpios = &lt;@gpio1 7&nbsp;GPIO_ACTIVE_LOW&gt;</p> <p>The irq line probably needs a similar modification as well.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/295627?ContentTypeID=1Mon, 22 Feb 2021 14:16:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:346a57d5-f016-40c4-8564-240eca6ca4f1GNotman<p>I believe I ran into a similar issue.</p> <p>I believe the issue is due to this commit:<br /><a href="https://github.com/zephyrproject-rtos/zephyr/commit/5963ebaf33bb542de1a7b2e1cf03b0af476e8dab">https://github.com/zephyrproject-rtos/zephyr/commit/5963ebaf33bb542de1a7b2e1cf03b0af476e8dab</a></p> <p>Which was added in Zephyr&nbsp;v2.4.0-rc1, which then made it into v1.4.x of the NRF SDK.</p> <p>There is a new field in `spi_cs_control`, labelled `gpio_dt_flags`.&nbsp;</p> <p>This&nbsp;needs to&nbsp;be set to `GPIO_ACTIVE_LOW` for the standard CS pull-low behaviour, or `GPIO_ACTIVE_HIGH` for the inverse.</p> <p>Unfortunately, `<span>GPIO_ACTIVE_HIGH == 0` which means that if it is not explicitly set, in most cases it will default to the non-standard behaviour.</span></p><div style="clear:both;"></div>