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Card/IO firmware

This repository contains the firmware source code for the Card/IO open source ECG device, built with an ESP32-C6 or ESP32-S3 MCU.

This firmware is in its early stages of development.

Setup

Tools you need to build the firmware:

• Espressif's Xtensa-enabled rust compiler - espup

  Make sure to run . ~/export-esp.sh before trying to work with the firmware

• cargo install cargo-espflash
• cargo install cargo-watch

Enable External / USB JTAG selector solder bridge

• pip install esptool
• python -m espefuse burn_efuse --port COM4 STRAP_JTAG_SEL 1

Commands

• cargo xtask -h: Prints information about available commands. Most of the commands have short aliasses, listed below.
• cargo xbuild <hw>: Build the firmware for a <hw> version board.
• cargo xrun <hw>: Build and run the firmware on a <hw> version board.
• cargo monitor: Connect to the Card/IO device and display serial output. <hw> can be omitted, or one of: v4, v6s3, v6c6. Defaults to v6c6.
• cargo xcheck <hw>: runs cargo check
• cargo xclippy <hw>: runs cargo clippy
• cargo xdoc <hw> [--open]: runs cargo doc and optionally opens the generated documentation.
• cargo xtest: runs cargo test.
• cargo example <package> <example> [--watch]: runs an example. Use --watch to enable automatic reload when a file changes.
• To run the config site on your PC, run cargo example config-site simple --watch and open 127.0.0.1:8080 in a browser.