RaspberryPi.md

Setting up a Raspberry Pi OpenOCD programmer

1. Set up SD card. Either download image with openocd from this page (todo: add link), or download a vanilla raspian os from https://www.raspberrypi.org/downloads/raspbian/ This will involve building OpenOCD yourself. To fit on a 4GB sd card, get the lite version.

2. https://www.raspberrypi.org/documentation/installation/installing-images/

diskutil unmountDisk diskn
sudo dd bs=1m if=~/Documents/2017-09-07-raspbian-stretch-lite.img of=/dev/rdiskn conv=sync

Wait.

2. Set up ssh. We prefer over usb: https://www.thepolyglotdeveloper.com/2016/06/connect-raspberry-pi-zero-usb-cable-ssh/

sublime /Volumes/boot/config.txt
dtoverlay=dwc2
sublime /Volumes/boot/cmdline.txt
modules-load=dwc2,g_ether
touch /Volumes/boot/ssh
ssh pi@raspberrypi.local
raspberry

3. Change password.

passwd

4. Get OpenOCD with nrf52 patch.
5. Make and install. You may need to install some things, and you might need to share internet from your PC over the usb connection.

sudo apt-get update
sudo apt-get install autoconf automake libtool git

cd openocd/
./bootstrap
./configure --enable-sysfsgpio --enable-bcm2835gpio
make
sudo make install

6. Back up the sd card! If you corrupt the card, you can skip steps 1-5 if you have a backup.

sudo dd if=/dev/diskn of=~/SDCardBackup.dmg

7. Get a bootloader. Adafruit's is nice.
8. Write openocd.cfg.
9. sudo openocd