Loading the firmware of the 51822 chip with another similar chip.

[hamster66]

Hello. Is it possible to flash 51822 on SDO and SCLK lines using another same chip? Are there any manuals for the SDO / SCLK interface for 51822? Maybe there is already a similar practice - would be very grateful for the links. Thank you in advance.

[MartinBL]

Hi,

It is certainly possible, but can be complicated. I suggest that you look at this: Production Programming.

There are other ways to program the nRF5 series using a sepparate MCU though. Instead of implementing the SWD protocol it might be easier to use Device Firmware Upgrade (DFU) over a serial transport interface.