1 files changed, 94 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..9bea689
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,94 @@
+#![no_std]
+#![no_main]
+
+use core::char;
+
+use arduino_uno::{delay_ms, hal::port::{mode::Output, portb::PB5}, prelude::*};
+use panic_halt as _;
+
+const SHORT: u16 = 75;
+const LONG:  u16 = SHORT * 3;
+const SPACE: u16 = SHORT * 7;
+
+macro_rules! morse {
+    ( $led:expr, $( $delay:expr ),* ) => {
+        {
+            $( 
+                $led.set_high().void_unwrap();
+                delay_ms($delay);
+                $led.set_low().void_unwrap();
+                delay_ms(SHORT);
+            )*
+            delay_ms(LONG - SHORT);
+        }
+    };
+}
+
+fn blink_morse(led: &mut PB5<Output>, c: u8) {
+    let c = char::from_u32(c as u32);
+    if let Some(c) = c {
+        match c {
+            'a' => morse!(led, SHORT, LONG),
+            'b' => morse!(led, LONG, SHORT, SHORT, SHORT),
+            'c' => morse!(led, LONG, SHORT, LONG, SHORT),
+            'd' => morse!(led, LONG, SHORT, SHORT),
+            'e' => morse!(led, SHORT),
+            'f' => morse!(led, SHORT, SHORT, LONG, SHORT),
+            'g' => morse!(led, LONG, LONG, SHORT),
+            'h' => morse!(led, SHORT, SHORT, SHORT, SHORT),
+            'i' => morse!(led, SHORT, SHORT),
+            'j' => morse!(led, SHORT, LONG, LONG, LONG),
+            'k' => morse!(led, LONG, SHORT, LONG),
+            'l' => morse!(led, SHORT, LONG, SHORT, SHORT),
+            'm' => morse!(led, LONG, LONG),
+            'n' => morse!(led, LONG, SHORT),
+            'o' => morse!(led, LONG, LONG, LONG),
+            'p' => morse!(led, SHORT, LONG, LONG, SHORT),
+            'q' => morse!(led, LONG, LONG, SHORT, LONG),
+            'r' => morse!(led, SHORT, LONG, SHORT),
+            's' => morse!(led, SHORT, SHORT, SHORT),
+            't' => morse!(led, LONG),
+            'u' => morse!(led, SHORT, SHORT, LONG),
+            'v' => morse!(led, SHORT, SHORT, SHORT, LONG),
+            'w' => morse!(led, SHORT, LONG, LONG),
+            'x' => morse!(led, LONG, SHORT, SHORT, LONG),
+            'y' => morse!(led, LONG, SHORT, LONG, LONG),
+            'z' => morse!(led, LONG, LONG, SHORT, SHORT),
+            '1' => morse!(led, SHORT, LONG, LONG, LONG, LONG),
+            '2' => morse!(led, SHORT, SHORT, LONG, LONG, LONG),
+            '3' => morse!(led, SHORT, SHORT, SHORT, LONG, LONG),
+            '4' => morse!(led, SHORT, SHORT, SHORT, SHORT, LONG),
+            '5' => morse!(led, SHORT, SHORT, SHORT, SHORT, SHORT),
+            '6' => morse!(led, LONG, SHORT, SHORT, SHORT, SHORT),
+            '7' => morse!(led, LONG, LONG, SHORT, SHORT, SHORT),
+            '8' => morse!(led, LONG, LONG, LONG, SHORT, SHORT),
+            '9' => morse!(led, LONG, LONG, LONG, LONG, SHORT),
+            '0' => morse!(led, LONG, LONG, LONG, LONG, LONG),
+            ' ' => delay_ms(SPACE - LONG),
+            _ => {},
+        }
+    }
+}
+
+#[arduino_uno::entry]
+fn main() -> ! {
+    let dp = arduino_uno::Peripherals::take().unwrap();
+
+    let mut pins = arduino_uno::Pins::new(dp.PORTB, dp.PORTC, dp.PORTD);
+
+    let mut led = pins.d13.into_output(&mut pins.ddr);
+    led.set_low().void_unwrap();
+
+    let mut serial = arduino_uno::Serial::new(
+        dp.USART0,
+        pins.d0,
+        pins.d1.into_output(&mut pins.ddr),
+        57600.into_baudrate(),
+    );
+
+    loop {
+        let b = nb::block!(serial.read()).void_unwrap();
+
+        blink_morse(&mut led, b);
+    }
+}