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Add feather_m4_can board, add mcan example
- the new `feather_m4_can` board is added as a clone of `feather_m4` with the chip changed ATSAM(D->E)51J - apply changes in board layout from `Feather M4` - adapt pinmux: alternate function pins for CAN1 connecting to TCAN1051 transceiver (RX, TX, S) and BOOST_EN - add aref pin on PA03 - move battery pin from PB01 to PB00 - Neopixel: update data to be on PB02, add enable pin PB03 - add neopixel rainbow example - adapt `mcan` example from `xplain` board replacing button triggering by a periodic task
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‎README.md

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@@ -21,7 +21,7 @@ In addition to the PACs and HAL, there numerous **B**oard **S**upport **P**ackag
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| [atsame51n](https://docs.rs/atsame51n/) | [![Crates.io](https://img.shields.io/crates/v/atsame51n.svg)](https://crates.io/crates/atsame51n) | |
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| [atsamd51p](https://docs.rs/atsamd51p/) | [![Crates.io](https://img.shields.io/crates/v/atsamd51p.svg)](https://crates.io/crates/atsamd51p) | [Grand Central M4 Express][grand_central_m4], [Wio Terminal][wio_terminal] |
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| [atsame51g](https://docs.rs/atsame51g/) | [![Crates.io](https://img.shields.io/crates/v/atsame51g.svg)](https://crates.io/crates/atsame51g) | |
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| [atsame51j](https://docs.rs/atsame51j/) | [![Crates.io](https://img.shields.io/crates/v/atsame51j.svg)](https://crates.io/crates/atsame51j) | |
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| [atsame51j](https://docs.rs/atsame51j/) | [![Crates.io](https://img.shields.io/crates/v/atsame51j.svg)](https://crates.io/crates/atsame51j) | [Feather M4 CAN][feather_m4_can] |
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| [atsame51n](https://docs.rs/atsame51n/) | [![Crates.io](https://img.shields.io/crates/v/atsame51n.svg)](https://crates.io/crates/atsame51n) | |
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| [atsame53j](https://docs.rs/atsame53j/) | [![Crates.io](https://img.shields.io/crates/v/atsame53j.svg)](https://crates.io/crates/atsame53j) | |
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| [atsame53n](https://docs.rs/atsame53n/) | [![Crates.io](https://img.shields.io/crates/v/atsame53n.svg)](https://crates.io/crates/atsame53n) | |
@@ -38,6 +38,7 @@ In addition to the PACs and HAL, there numerous **B**oard **S**upport **P**ackag
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[edgebadge]: https://github.com/atsamd-rs/atsamd/tree/master/boards/edgebadge
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[feather_m0]: https://github.com/atsamd-rs/atsamd/tree/master/boards/feather_m0/
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[feather_m4]: https://github.com/atsamd-rs/atsamd/tree/master/boards/feather_m4/
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[feather_m4_can]: https://github.com/atsamd-rs/atsamd/tree/master/boards/feather_m4_can/
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[gemma_m0]: https://github.com/atsamd-rs/atsamd/tree/master/boards/gemma_m0/
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[grand_central_m4]: https://github.com/atsamd-rs/atsamd/tree/master/boards/grand_central_m4/
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[itsybitsy_m0]: https://github.com/atsamd-rs/atsamd/tree/master/boards/itsybitsy_m0/

‎boards/feather_m4_can/.cargo/config

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# vim:ft=toml:
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[target.thumbv7em-none-eabihf]
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runner = 'arm-none-eabi-gdb'
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[build]
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target = "thumbv7em-none-eabihf"
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rustflags = [
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# This is needed if your flash or ram addresses are not aligned to 0x10000 in memory.x
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# See https://github.com/rust-embedded/cortex-m-quickstart/pull/95
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"-C", "link-arg=--nmagic",
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"-C", "link-arg=-Tlink.x",
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]

‎boards/feather_m4_can/CHANGELOG.md

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# v0.1.0
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- The board is added as a clone of `feather_m4` with chip changed ATSAM(D->E)51J
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- Adapt pinmux: alternate function pins for CAN1 connecting to TCAN1051 transceiver
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- Clone `mcan` example from `atsame54_xpro` board (using periodic task instead of button)
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---
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Changelog tracking started at v0.1.0

‎boards/feather_m4_can/Cargo.toml

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[package]
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name = "feather_m4_can"
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version = "0.1.0"
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edition = "2021"
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authors = ["Theodore DeRego <[email protected]>"]
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description = "Board Support crate for the Adafruit Feather M4 CAN"
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keywords = ["no-std", "arm", "cortex-m", "embedded-hal", "can"]
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categories = ["embedded", "hardware-support", "no-std"]
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license = "MIT OR Apache-2.0"
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repository = "https://github.com/atsamd-rs/atsamd"
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readme = "README.md"
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documentation = "https://atsamd-rs.github.io/atsamd/atsamd51j/feather_m4_can/"
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# for cargo flash
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[package.metadata]
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chip = "ATSAME51J19A"
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[dependencies.cortex-m-rt]
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version = "0.7"
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optional = true
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[dependencies.atsamd-hal]
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path = "../../hal"
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version = "0.15.1"
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default-features = false
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[dependencies.usb-device]
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version = "0.2"
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optional = true
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[dev-dependencies]
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mcan = "0.2"
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dwt-systick-monotonic = "1.1"
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panic-rtt-target = { version = "0.1", features = ["cortex-m"] }
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rtt-target = { version = "0.3", features = ["cortex-m"] }
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cortex-m = "0.7"
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usbd-serial = "0.1"
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cortex-m-rtic = "1.1"
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panic-halt = "0.2"
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panic-semihosting = "0.5"
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smart-leds = "0.3"
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ws2812-timer-delay = "0.3"
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heapless = "0.7"
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[features]
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# ask the HAL to enable atsame51j support
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default = ["rt", "atsamd-hal/same51j", "atsamd-hal/same51"]
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rt = ["cortex-m-rt", "atsamd-hal/same51j-rt"]
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unproven = ["atsamd-hal/unproven"]
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usb = ["atsamd-hal/usb", "usb-device"]
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can = ["atsamd-hal/can"]
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dma = ["atsamd-hal/dma", "unproven"]
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max-channels = ["dma", "atsamd-hal/dma"]
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[profile.dev]
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incremental = false
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codegen-units = 1
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debug = true
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lto = true
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[profile.release]
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debug = true
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lto = true
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opt-level = "s"
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[[example]]
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name = "blinky_basic"
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[[example]]
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name = "pwm"
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required-features = ["unproven"]
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[[example]]
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name = "neopixel_rainbow"
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[[example]]
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name = "usb_echo"
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required-features = ["usb"]
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[[example]]
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name = "dmac"
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required-features = ["dma"]
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[[example]]
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name = "uart"
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required-features = ["dma"]
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[[example]]
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name = "pukcc_test"
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required-features = ["unproven", "usb"]
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[[example]]
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name = "nvm_dsu"
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required-features = ["unproven", "usb"]
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[[example]]
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name = "smart_eeprom"
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required-features = ["unproven", "usb"]
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[[example]]
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name = "i2c"
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required-features = ["atsamd-hal/dma"]
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[[example]]
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name = "mcan"
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required-features = ["can"]

‎boards/feather_m4_can/README.md

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# Adafruit Feather M4 Board Support Crate
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This crate provides a type-safe API for working with the [Adafruit Feather M4
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board](https://www.adafruit.com/product/3857).
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## Prerequisites
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* Install the cross compile toolchain `rustup target add thumbv7em-none-eabihf`
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* Install [cargo-hf2 the hf2 bootloader flasher tool](https://crates.io/crates/cargo-hf2) however your platform requires
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## Uploading an example
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Check out the repository for examples:
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https://github.com/atsamd-rs/atsamd/tree/master/boards/feather_m4_can/examples
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* Be in this directory `cd boards/feather_m4_can`
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* Put your device in bootloader mode usually by hitting the reset button twice.
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* Build and upload in one step
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```
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$ cargo hf2 --release --example blinky_basic
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Finished release [optimized + debuginfo] target(s) in 0.19s
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Searching for a connected device with known vid/pid pair.
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Trying Ok(Some("Adafruit Industries")) Ok(Some("PyBadge"))
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Flashing "/Users/User/atsamd/boards/feather_m4_can/target/thumbv7em-none-eabihf/release/examples/blinky_basic"
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Finished in 0.079s
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$
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```

‎boards/feather_m4_can/build.rs

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use std::env;
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use std::fs::File;
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use std::io::Write;
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use std::path::PathBuf;
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fn main() {
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if env::var_os("CARGO_FEATURE_RT").is_some() {
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("memory.x"))
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.unwrap()
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.write_all(include_bytes!("memory.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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println!("cargo:rerun-if-changed=memory.x");
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}
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println!("cargo:rerun-if-changed=build.rs");
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}

‎boards/feather_m4_can/examples/blinky_basic.rs

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#![no_std]
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#![no_main]
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use feather_m4_can as bsp;
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#[cfg(not(feature = "use_semihosting"))]
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use panic_halt as _;
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#[cfg(feature = "use_semihosting")]
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use panic_semihosting as _;
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use bsp::entry;
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use bsp::hal;
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use hal::clock::GenericClockController;
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use hal::delay::Delay;
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use hal::pac::{CorePeripherals, Peripherals};
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use hal::prelude::*;
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#[entry]
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fn main() -> ! {
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let mut peripherals = Peripherals::take().unwrap();
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let core = CorePeripherals::take().unwrap();
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let mut clocks = GenericClockController::with_external_32kosc(
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peripherals.GCLK,
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&mut peripherals.MCLK,
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&mut peripherals.OSC32KCTRL,
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&mut peripherals.OSCCTRL,
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&mut peripherals.NVMCTRL,
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);
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let pins = bsp::Pins::new(peripherals.PORT);
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let mut red_led = pins.d13.into_push_pull_output();
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let mut delay = Delay::new(core.SYST, &mut clocks);
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loop {
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delay.delay_ms(2000u16);
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red_led.set_high().unwrap();
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delay.delay_ms(2000u16);
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red_led.set_low().unwrap();
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}
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}

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