https://github.com/dajamante/usb-playground
USB examples
https://github.com/dajamante/usb-playground
Last synced: 3 months ago
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USB examples
- Host: GitHub
- URL: https://github.com/dajamante/usb-playground
- Owner: Dajamante
- License: apache-2.0
- Created: 2022-07-27T08:56:09.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2022-09-28T13:24:00.000Z (over 2 years ago)
- Last Synced: 2025-01-12T16:49:02.286Z (5 months ago)
- Language: Rust
- Size: 168 KB
- Stars: 1
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# USB playground
## Run
### Phase 1: coolterm
Works with coolterm and echoes back `a .. z` to capital letters
1. Go to the branch `coolterm`
2. start coolterm, identify your usb.
Tips: run `ls -l /dev/serial/by-id` will return the port of the `usb-SEGGER_J-Link`. You need the other one (Usually `ACMx` on Linux, `x=0,1,2..`).
3. both USB and Seger probe must be connected with nRF52840!
4. Run `DEFMT_LOG=info cargo rb usb` in the firmware folder.
5. On coolterm, find right port (should be `/dev/ttyACM{0/1/2}` as per point 1. on Linux)
6. Type letters in coolterm, they should be echoed back in capital letters.
The example is taken from USB serial example in [`nrf-hal`](https://github.com/stm32-rs/stm32f1xx-hal/blob/master/examples/usb_serial.rs).
\* that info is in the `.cargo/config.toml` file but if it does not publish any letter, use explicit logging.
[.cargo/config.toml]
```toml
[env]
DEFMT_LOG="info"
```
### Phase 2: on_off_temp
This part works with a host (the computer). Type instructions at the terminal.
1. Go in the host folder `cd host`
2. Run `cargo run --bin send`
3. Go to `cd firmware` and then run `DEFMT_LOG=info cargo rb usb`
The host is sending a serialized command to the firmware, with [Postcard](https://docs.rs/postcard/latest/postcard/).
❗The [serial busy error](https://github.com/serialport/serialport-rs/blob/6542d11235532ec78332e1e6b4986e73b8d55b11/src/lib.rs#L76)(`Error: Error { kind: Unknown, description: "Device or resource busy" }`) is an indication that the resource might still be used by coolterm.
### Phase 3: dioxus
That is WIP!
Works with a host program, turns on the light on and off and gives temperature with an GUI made (poorly) with Dioxus.
1. Checkout the branch `dioxus`
2. Host is in its folder: `cd host` and `cargo run --bin app`
3. The board: `cd firmware` and then `DEFMT_LOG=info cargo rb usb`
4. Click `on`, `off` or `temp` on the window to see the bord turning on the led, or turning off the led, or giving the temperature.
Error handling is still left as an exercise...