https://devzone.nordicsemi.com/f/nordic-q-a/119306/how-to-control-gpio-using-registers-in-zephyrHi, As the title suggests, I need to simulate I2C-like functionality using software. Therefore, I want to control GPIO using registers. I attempted the following approach, but the GPIO did not respond at all. My hardware is nRF5340 , and the projecten-USTelligent Community 13Wed, 26 Feb 2025 09:19:57 GMThttps://devzone.nordicsemi.com/thread/524765?ContentTypeID=1Wed, 26 Feb 2025 09:19:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b1db7dfd-5583-4a2b-965a-ef0609cf303aSunHuang<p>Hi,</p> <p>Thanks for your reply.I have already resolved the issue.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/524551?ContentTypeID=1Tue, 25 Feb 2025 10:19:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b2da965-f2ec-48b2-9552-9e57e84f588dSigurd Hellesvik<p>Hi,</p> [quote user=""]My hardware is <strong>nRF5340</strong>, and the project example is <strong>Matter Lock</strong>.[/quote] <p>First and foremost: To test this new feature, add it to a simple project first, such as hello worlds. Then integrate it into more complex projects when it works standalone.</p> [quote user=""]As the title suggests, I need to simulate I2C-like functionality using software. [/quote] <p>Cant you just use the I2C peripheral? That is usually a better idea than <a href="https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/i2c/i2c_bitbang.c">bit-banging</a>.</p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>