История

Michal Moskal 59aeba4173 add missing pkg info		2022-06-23 16:04:14 -07:00
..
Makefile	add missing pkg info	2022-06-23 16:04:14 -07:00
README.md	add hardware schematics for the bridge	2021-12-06 13:31:06 -08:00
pibridge-gpiod.c	simplify gpiod impl	2022-06-23 16:00:25 -07:00
pibridge-wiringpi.c	moving to gpiod	2022-06-23 11:43:43 -07:00
run.sh	start on gpiod impl of rpi bridge	2022-06-23 15:54:32 -07:00
schematics.pdf	add hardware schematics for the bridge	2021-12-06 13:31:06 -08:00

README.md

SPI<->Jacdac bridge; RPi side

The executable in this folder talks via SPI to a STM32G0 MCU that handles real-time Jacdac communications. The packets are read from stdin and then printed out to stdout, so it is easy to interface Python or Node.js to it.

Refer to schematics.pdf file in this folder about how to build the hardware bridge. Note that you'll likely want to use a different current limiter, with 0.9A limit or less. You may also need additional ESD protection, please refer to Jacdac module reference designs

This is a prototype and has not been EMI-tested.

Installation

Run make in this folder. Put pibridge executable somewhere.

Enable SPI from sudo raspi-config.

When you run ./pibridge, it should print some packets in hex.

Create (or update) ~/.jacdac/config.ini with the following:

[jacdac]
transport_cmd = /path/to/pibridge

RPi Zero USB

https://www.thepolyglotdeveloper.com/2016/06/connect-raspberry-pi-zero-usb-cable-ssh/ https://www.thepolyglotdeveloper.com/2019/07/share-internet-between-macos-raspberry-pi-zero-over-usb/

Install node.js

(this is if you're not using our Python SDK)

wget https://nodejs.org/download/release/v10.24.1/node-v10.24.1-linux-armv6l.tar.xz
tar -xf node-v10.24.1-linux-armv6l.tar.xz
cd node-v10.24.1-linux-armv6l
sudo cp -r bin include lib share /usr/local

node from nodejs package from raspbian takes ~16s to startup (!!!)

install: