https://devzone.nordicsemi.com/f/nordic-q-a/23677/i2c-communication-issuehello i am using nrf52840, with BME280, i have external pullup 10k resistor. how i can disable the internal pullup resistor. i am using this sample code. github.com/.../main.cen-USTelligent Community 13Fri, 21 Jul 2017 14:03:52 GMThttps://devzone.nordicsemi.com/thread/93078?ContentTypeID=1Fri, 21 Jul 2017 14:03:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e98366c-55d6-45e1-91c1-aa1a4e8750ceJ&#248;rgen Holmefjord<p>Hi,</p> <p>In SDK 13.0.0, the GPIO pins are configured on line 112-131 in the file <em>nrf_drv_twi.c</em>. You can disable internal pullup by changing the defines <code>SCL_PIN_INIT_CONF</code> and <code>SCL_PIN_INIT_CONF_CLR</code> from <code>GPIO_PIN_CNF_PULL_Pullup</code> to <code>GPIO_PIN_CNF_PULL_Disabled</code>.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>