boxswap

core/src/periph/kim1_keypad/mod.rs

@@ -0,0 +1,105 @@
+/*
+  +---+---+---+---+---+---+
+  | 0 | 1 | 2 | 3 | 4 | 5 |
+  +---+---+---+---+---+---+
+  | 6 | 7 | 8 | 9 | A | B |
+  +---+---+---+---+---+---+
+  | C | D | E | F | AD| DA|
+  +---+---+---+---+---+---+
+  | + | PC| ST| RS|   |   |
+  +---+---+---+---+---+---+
+ */
+
+pub struct Kim1Keypad {
+    keys: [bool; 23],
+    stepping: bool
+}
+
+impl Kim1Keypad {
+    pub fn dump(&self) {
+        println!("Dumping state of keypad");
+    }
+}
+
+impl Kim1Keypad {
+    fn keyid(from: u8) -> usize{
+        (from % 23) as usize
+    }
+    pub fn new() -> Self {
+        Kim1Keypad {
+            keys: [false; 23],
+            stepping: false
+        }
+    }
+
+    pub fn toggle_stepping(&mut self) {
+        self.stepping = !self.stepping;;
+    }
+
+    pub fn set_stepping(&mut self, new_state: bool) {
+        self.stepping = new_state
+    }
+
+    pub fn press_key(&mut self, key_to_press: u8) {
+        self.keys[Self::keyid(key_to_press)] = true;
+    }
+
+    pub fn release_key(&mut self, key_to_release: u8) {
+        self.keys[Self::keyid(key_to_release)] = false;
+    }
+
+    pub fn is_pressed(&self, key: u8) -> bool {
+        self.keys[Self::keyid(key)]
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn smoke() { assert!(true); }
+
+    #[test]
+    fn keys_are_pressed() {
+        let mut kb = Kim1Keypad::new();
+
+        for index in 0..23 {
+            assert!(!kb.is_pressed(index));
+            kb.press_key(index);
+            assert!(kb.is_pressed(index));
+
+            kb.release_key(index);
+            assert!(!kb.is_pressed(index));
+        }
+    }
+
+    #[test]
+    fn stepping_changes() {
+        let mut kb = Kim1Keypad::new();
+
+        kb.set_stepping(false);
+
+        assert!(!kb.stepping);
+
+        kb.toggle_stepping();
+
+        assert!(kb.stepping);
+
+        kb.toggle_stepping();
+        kb.toggle_stepping();
+        kb.toggle_stepping();
+        kb.toggle_stepping();
+        kb.toggle_stepping();
+
+        assert!(!kb.stepping);
+    }
+
+    #[test]
+    fn out_of_range() {
+        let mut kb = Kim1Keypad::new();
+
+        kb.press_key(24);
+        assert!(kb.is_pressed(1));
+    }
+}