Upgrade to as5600 with async feature, thanks @barafael. Unfortunately…

… it still panics on the .angle() method, although I suspect that it's not the crate's fault but probably AVR not supporting the returned u16 perhaps?: https://internals.rust-lang.org/t/adding-16-bit-pointer-support/2484... the post is about pointers not (stack or heap) values, so need to investigate further. Also adding a simavr wrapper: https://github.com/Patryk27/avr-tester

Cargo.toml

@@ -9,13 +9,14 @@ resolver = "2"
 panic-halt = "0.2"
 embassy-executor = { git = "https://github.com/embassy-rs/embassy", features = ["arch-avr", "executor-thread", "nightly"] }
 avr-device = { version = "0.5", features = ["atmega2560", "rt", "critical-section-impl"] }
+#avr-tester = "0.2"
 arduino-hal = { git = "https://github.com/Rahix/avr-hal", features = ["arduino-mega2560"] }
-as5600 = "0.6"
+as5600 = { version = "0.8", features = ["async"] }
 ufmt = "0.2"
 
 [profile.dev]
 panic = "abort"
-#lto = true
+lto = true
 opt-level = "s" # mandatory, otherwise we'll get:  "error: ran out of registers during register allocation"
 
 [profile.release]

README.md

@@ -5,3 +5,10 @@ Flash the Arduino Mega 2560 board with:
 ```sh
 cargo run -- -P /dev/ttyUSB0
 ```
+
+# Prerequisites
+
+```
+$ apt-get install avrdude clang pkg-config gcc-avr gdb-avr libelf-dev
+$ cargo install ravedude
+```

tests/angle_test.rs

@@ -0,0 +1,26 @@
+// use avr_tester::*;
+
+// fn avr() -> AvrTester {
+//     AvrTester::atmega328p()
+//         .with_clock_of_16_mhz()
+//         .load("target/atmega2560/debug/yourproject.elf")
+// }
+
+// // Assuming `yourproject` implements a ROT-13 encoder:
+
+// #[test]
+// fn short_text() {
+//     let mut avr = avr();
+
+//     // Let's give our firmware a moment to initialize:
+//     avr.run_for_ms(1);
+
+//     // Now, let's send the string:
+//     avr.uart0().write("Hello, World!");
+
+//     // ... give the AVR a moment to retrieve it & send back, encoded:
+//     avr.run_for_ms(1);
+
+//     // ... and, finally, let's assert the outcome:
+//     assert_eq!("Uryyb, Jbeyq!", avr.uart0().read::<String>());
+// }