DFU Bootloader button inverse polarityhttps://devzone.nordicsemi.com/f/nordic-q-a/4518/dfu-bootloader-button-inverse-polarityHello, I have tested the DFU and everything works fine. Normaly the device enters into DFU mode with a pressed button 7, meaning the level on I/O 7 is LOW. But in my application I need normal operation with LOW level on button 7 and DFU mode withen-USTelligent Community 13Thu, 20 Nov 2014 19:31:32 GMTRE: DFU Bootloader button inverse polarityhttps://devzone.nordicsemi.com/thread/16030?ContentTypeID=1Thu, 20 Nov 2014 19:31:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:308472e9-0175-4218-8cb1-dc6e2cfb78c7wlgrd<p>You should accept this answer so others quickly see that it&#39;s solved :)</p><div style="clear:both;"></div>RE: DFU Bootloader button inverse polarityhttps://devzone.nordicsemi.com/thread/16031?ContentTypeID=1Thu, 20 Nov 2014 11:40:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:15c7a9d2-297c-4314-83db-a767ef7e8045Stian R&#248;ed Hafskjold<p>Thank you for answering your own question:)</p><div style="clear:both;"></div>RE: DFU Bootloader button inverse polarityhttps://devzone.nordicsemi.com/thread/16029?ContentTypeID=1Thu, 20 Nov 2014 10:54:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:636155ec-826b-4bc5-bfba-026b2df3bcabmicrochip<p>Ok, I found that I have to change dfu_start:</p> <pre><code>dfu_start |= ((nrf_gpio_pin_read(BOOTLOADER_BUTTON_PIN) == 1) ? true: false); </code></pre> <p>Maybe this will help someone</p><div style="clear:both;"></div>