Hi, I have designed a custom board using the nRF52840 and have successfully programmed it using SWD (SWDIO & SWDCLK) with a J-Link programmer . However, I now want to program the board through USB . What steps are needed to enable USB programming for my custom nRF52840 board? Do I need to flash a specific bootloader for USB support? If so, which one and how? I also want to make my board Arduino-compatible , so I can program it using the Arduino IDE . How can I achieve this? I have attached my PCB design (PDF) for reference. Any guidance on bootloaders, firmware, and necessary modifications would be greatly appreciated! updated NRF52840 Module.pdf

How to Program Custom nRF52840 Board via USB & Make It Arduino Compatible

Hi,

I have designed a custom board using the nRF52840 and have successfully programmed it using SWD (SWDIO & SWDCLK) with a J-Link programmer. However, I now want to program the board through USB.

What steps are needed to enable USB programming for my custom nRF52840 board?
Do I need to flash a specific bootloader for USB support? If so, which one and how?
I also want to make my board Arduino-compatible, so I can program it using the Arduino IDE. How can I achieve this?

I have attached my PCB design (PDF) for reference. Any guidance on bootloaders, firmware, and necessary modifications would be greatly appreciated!updated NRF52840 Module.pdf