https://devzone.nordicsemi.com/f/nordic-q-a/54635/uart-issue-in-secure-ble-dfu-bootloaderHi Nordic Support Team, i&#39;m working with nrf52832 development kit. In that, We are adding the UART features in BLE DFU secure bootloader example code in SDKV15.2.0. But data is not transmitting and also receiving on minicom. In which below i mentioneden-USTelligent Community 13Thu, 21 Nov 2019 08:10:32 GMThttps://devzone.nordicsemi.com/thread/221227?ContentTypeID=1Thu, 21 Nov 2019 08:10:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:22a2aaf5-eeae-4adf-96d6-c77b53181b74Kenneth<p>Hi,</p> <p>Maybe compare with the nrfx_uart.c driver:<br /><a href="https://github.com/NordicSemiconductor/nrfx/blob/master/drivers/src/nrfx_uart.c">https://github.com/NordicSemiconductor/nrfx/blob/master/drivers/src/nrfx_uart.c</a></p> <p>Or you may just take a look at the attached simple code (if you don&#39;t need EasyDMA or interrupt).</p> <p>Best regards,<br />Kenneth</p> <p></p> <p><a href="https://github.com/NordicSemiconductor/nrfx/blob/master/drivers/src/nrfx_uart.c"><a href="https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-1d70db409887458c85c62a3b6d620b8f/simple_5F00_uart.c">devzone.nordicsemi.com/.../simple_5F00_uart.c</a><a href="https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-1d70db409887458c85c62a3b6d620b8f/simple_5F00_uart.h">devzone.nordicsemi.com/.../simple_5F00_uart.h</a><a href="https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-1d70db409887458c85c62a3b6d620b8f/main.c">devzone.nordicsemi.com/.../main.c</a></a></p><div style="clear:both;"></div>