Programming nRF9151Feather using 'Recovery & Programming Mini Fixture'

cptel

Can you point me to a procedure/process on how to program the nRF9151Feather using ‘Recovery & Programming Mini Fixture’? what tools, if any are required?

Currently I program it using the ‘probe-rs’ command via USB.

jaredwolff

@cptel typically that’s all you need. In the case you need the external fixture you:

Install probe-rs if not already:

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.sh | sh

Then,

Plug a Raspberry Pi Debug Probe or a nRF53/nRF91 DK into the recovery fixture
Attach USB power
Place in fixture
Then run

probe-rs download --chip nRF9151_xxAA --binary-format hex path/to/merged.hex

That’s the typical workflow. Internally we have rust code that uses the probe-rs lib that detects and programs appropriately. Keeps the user error to a minimum. 😃

jaredwolff

Also @cptel, for boards without USB the recovery fixture has a pin for providing the necessary voltage to keep it powered during programming. You’d likely need similar for your situation.

cptel

Installed probe-rs

summer@mac pwl % curl --proto '=https' --tlsv1.2 -LsSf https://github.com/probe-rs/probe-rs/releases/latest/download/probe-rs-tools-installer.sh | sh

downloading probe-rs-tools 0.29.1 aarch64-apple-darwin
installing to /Users/summer/.cargo/bin
  cargo-embed
  cargo-flash
  probe-rs
everything's installed!

Ran the following command received error:

summer@mac pwl % probe-rs download --chip nRF9151_xxAA --binary-format hex build/merged.hex
Error: Connecting to the chip was unsuccessful.

Caused by:
    0: An ARM specific error occurred.
    1: An error occurred in the communication with an access port or debug port.
    2: Target device did not respond to request.

cptel

additional images of my setup:

cptel

problem solved - it was lack of power to the board. I mis-read your comment about fixture already having power - as it doesn’t. Your comment said it has pins that can be connected to power supply in lieu of USB power.

All good to go…