Firmware update question

[rtakaki]

Hi all,

Is there a way to change the UART pins configuration to bypass the segger jlink debugger on the nRF51/52 devices? I would like NOT to use this debugger chip for budget device strategy.

Thanks in advance and best regards.

[Matt]

Don't understand your question here: segger jlink connects to the SWD and SWDCLK pins and not the uart tx/rx pins, so what exactly is this bypass business about?

[Matt]

Start with the DFU description in, say, nRF5 SDK v11.0.0/Examples/DFU Bootloader examples/BLE & HCI/UART Bootloader/DFU in the nordic semiconductor infocenter. I believe back in sdk11 there was the serial bootloader version available so that if there is a uart connection between the nRF52 and your Linux host (eg. RasPi 2 or 3) you can use the LInux host as the bootloader driver.