Acts as host for a single USB MIDI device, converting signals to high speed serial MIDI.
Under development.
Intended to be used as companion board for https://github.com/fralalonde/usbmidi-route
- Adafruit Trinket M0 (Atmel SAM D21)
- Rust
Uses async-modified versions of the usb-host and atsamd-usb-host crates.
The runtime lib provides a custom Rust async implementation compatible with RTIC, based on the woke crate.
The sync-thumbv6m lib provides original and mutated data structures adapted to the Cortex-M0 lack of atomic operations.
Connect to Trinket M0 board using underside SWD pads
For the probe I use a bluepill
Then I flash it with DAP42 firmware
Very simple wiring turns it into an SWD probe
STLinkV2-compatible probes also work... until they don't (why?)
If not already installed, run
cargo install probe-run
And then
cargo build
probe-run --chip ATSAMD21E17A target/thumbv6m-none-eabi/debug/usb-serial
If it doesn't work the first time... retry more.
Note: chip type for SAM D21 on Trinket M0 should be ATSAMD21E18A but actually needs to be ATSAMD21E17A.
See probe-rs/probe-rs#507
Instead of probe-rs, Use OpenOCD to flash the app and run as GDB server and RTT/defmt server
See the watch_rtt.sh script or just use CLion run configs from .run dir
(Derived from https://ferrous-systems.com/blog/gdb-and-defmt/)
Licensed under the terms of the Apache 2.0 and MIT license.