Factory pre-programmed erase before programming nrf52

[Harshit]

Hello Guys,

I use BMD-350 rigado module for development. Now I want to programme it using raspberry pi 3.

I am using OpenOCD in raspberry pi to programme nrf52 chip. I have connected raspberry pi and DUT via SWDO, SCLK, RST and GND. VCC(3v3)has been applied via digital power supply.

Now, I come to know that before programming chip, I need to erase factory pre-programmed firmware that loads while assembling.

Please guide me how can I erase this factory pre-programmed firmware using OpenOCD without using external debugger/programmer?

How to check which factory firmware is installed AB or AD in module while assembling?

Is there any command for that?

Regards, Harshit Rpi_DUT.png

[Harshit]

By the way anybody knows how to get factory firmware link or attachment for BMD350 chip?

I tried to search out but there is no any repository found on web.

Please help.

Thanks, Harshit