Minimal experiments to see, how things can be done in Rust.

• Gnu make

• bindgen >= 0.70.0

• probe-rs > 0.24.0

   $ cargo install probe-rs-tools --git https://github.com/probe-rs/probe-rs --locked --force
  

$ [DEFMT_LOG=debug] cargo run --release --example a

$ cargo run --release --features=embedded-hal --example i2c_nudge

The code serves as a sample on how to use the I2C bus. It uses the ST.com VL53L5CX-SATEL breakout board.

To run the example, wire these:

Without having its firmware uploaded (by a driver), the board isn't fully operational. You may get:

with board connected

INFO  Got: 0x03, 0x00

Note: The right values should be 0xf0, 0x02.

without the board

ERROR Failed with: AckCheckFailed

$ DEFMT_LOG=debug cargo run --release --example a
   Compiling rustyard v0.0.0 (/home/ubuntu/Rustyard)
    Finished `release` profile [optimized + debuginfo] target(s) in 54.20s
     Running `probe-rs run --chip=esp32c3 '--log-format={L} {s}' target/riscv32imc-unknown-none-elf/release/examples/a`
      Erasing ✔ [00:00:02] [#################] 192.00 KiB/192.00 KiB @ 85.21 KiB/s (eta 0s )
  Programming ✔ [00:00:11] [##################] 22.52 KiB/22.52 KiB @ 2.01 KiB/s (eta 0s )
  Finished in 11.232046s

Occasionally, they need resetting to a "download state". Do this by:

• Press both RESET and BOOT buttons
• Release RESET
• Release BOOT
• reconnect using USB/IP: e.g. sudo usbip attach -r 192.168.1.29 -b 3-1
• try flashing and running

The logs should show like this:

INFO  Hello
INFO  Platform is: RustPlatform { a: 2, b: 772 }
DEBUG Out of 'tunnel()'

Note: This is a common thing using ESP32-C3 boards. Has not been observed on ESP32-C6 (ESP32-DevKit-M01, in particular).

If you have both boards, use set-target and retry on that one.

You can change the target board between ESP32-C3 (default) and ESP32-C6, by:

$ ./set-target.sh