Disable NRF9160 I2C internal pull up. NRF91 with TXS0108https://devzone.nordicsemi.com/f/nordic-q-a/83479/disable-nrf9160-i2c-internal-pull-up-nrf91-with-txs0108I finally got a working i2c code base but it seems that the nrf9160 has internal pullups on the i2C bus me trying to combine this with a TXS0108 causes weird issues. I suspect that the internal pull fights the internal pull up of the TXS0108 so I wanteden-USTelligent Community 13Mon, 31 Jan 2022 21:51:03 GMTRE: Disable NRF9160 I2C internal pull up. NRF91 with TXS0108https://devzone.nordicsemi.com/thread/350537?ContentTypeID=1Mon, 31 Jan 2022 21:51:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ac6dbe1-b089-4f4f-a3da-d9fd5dbef885Stian R&#248;ed Hafskjold<p>Hi, sorry for the late reply. There is no way to do that through the zephyr driver API unfortunately, so you will have to change the nrfx TWIM drivers directly. More specifically:</p> <p>In <strong>\modules\hal\nordic\nrfx\drivers\src\nrfx_twim.c</strong>,<br />in <code>TWIM_PIN_INIT</code><br />change <code>NRF_GPIO_PIN_PULLUP</code> to <code>NRF_GPIO_PIN_NOPULL</code></p> <p><br />In <strong>\modules\hal\nordic\nrfx\drivers\src\nrfx_twi_twim.c,</strong><br />in <code>TWI_TWIM_PIN_CONFIGURE</code><br />change <code>NRF_GPIO_PIN_PULLUP</code> to <code>NRF_GPIO_PIN_NOPULL</code></p> <p>Best regards,<br />Stian</p><div style="clear:both;"></div>