breaking: new 6-key layout!

drivekeys.ino

@@ -1,52 +1,109 @@
-#include <Arduino.h>
-#include <BleKeyboard.h>
-
-#define BUTTON1 26 
-#define BUTTON2 25 
-#define BUTTON3 13 
-
-BleKeyboard bleKeyboard(
-  "DriveKeys",
-  "ShipLift LLC",
-  100
-);
-
-int button1State = HIGH;
-int button2State = HIGH;
-int button3State = HIGH;
-
-void setup() {
-  bleKeyboard.begin();
-  pinMode(BUTTON1, INPUT_PULLUP);
-  pinMode(BUTTON2, INPUT_PULLUP);
-  pinMode(BUTTON3, INPUT_PULLUP);
-}
-
-void stateChecker(int button, int *state, uint8_t key){
-  int currentButton1State = digitalRead(button);
-  if (currentButton1State != *state)
-    {
-        if (currentButton1State == LOW)
-        {
-            bleKeyboard.press(key);
-        }
-        else
-        {
-            bleKeyboard.release(key);
-        }
-    }
-    *state = currentButton1State;
-}
-
-void loop() {
-  if(bleKeyboard.isConnected()) {
-    stateChecker(BUTTON1, &button1State, KEY_LEFT_CTRL); // SW
-    stateChecker(BUTTON2, &button2State, KEY_LEFT_ALT); // SE
-    stateChecker(BUTTON3, &button3State, KEY_LEFT_SHIFT); // NE
-
-    // Or, actual keys (for debugging etc)
-    // stateChecker(BUTTON1, &button1State, 'a'); // SW
-    // stateChecker(BUTTON2, &button2State, 'b'); // SE
-    // stateChecker(BUTTON3, &button3State, 'c'); // NE
-  }
-}
+
+#include "Keyboard.h"
+
+
+/**
+*      DriveKey Physical Layout
+*
+*    +---------------------+
+*    | A | B | C |         |
+*    | D | E |             |
+*    | F |     OOOO        |
+*    |---+    OOOOOO       |
+*    |       OOOOOOOO      |
+*    |        OOOOOO       |
+*    |         OOOO        |
+*    |...
+*
+**/
+
+// Aesthetics
+#define TAP_MS 200 // When a tap becomes a hold in milliseconds
+
+// MAX_KEYS must be larger than the highest IO pin on the board used for keymapping
+// In this case it's digital pin 13. 20 > 13, so MAX_KEYS of 20 is fine.
+// 13 would also be fine, but this memory is cheap, and this project simple.
+
+#define MAX_KEYS 20
+static char KEY_MAP[MAX_KEYS];
+static bool STATE_MAP[MAX_KEYS];
+
+// Maps the diagram from above to the physical/electrically wired pins.
+// This names will be used extensively throughtout this code. Know them.
+#define KEY_A  13
+#define KEY_B  12
+#define KEY_C  11
+#define KEY_D  10
+#define KEY_E  9
+#define KEY_F  8
+
+void setup() {
+  // Assign each key to produce a character output.
+  KEY_MAP[KEY_A] = 'a';
+  KEY_MAP[KEY_B] = 'b';
+  KEY_MAP[KEY_C] = 'c';
+  KEY_MAP[KEY_D] = 'd';
+  KEY_MAP[KEY_E] = 'e';
+  KEY_MAP[KEY_F] = 'f';
+
+  // Set the initial state of all keys
+  // This map will be used to:
+  //  * Know when a key is presses
+  //  * Track when it is released
+  //  * Know if it's being held
+  //  * Know if combos are being pressed
+  //  * Know the current state of any one key
+  //  * And I think that's it.
+  //
+
+  STATE_MAP[KEY_A] = HIGH;
+  STATE_MAP[KEY_B] = HIGH;
+  STATE_MAP[KEY_C] = HIGH;
+  STATE_MAP[KEY_D] = HIGH;
+  STATE_MAP[KEY_E] = HIGH;
+  STATE_MAP[KEY_F] = HIGH;
+
+  // Since the design has no resistors, we use INPUT_PULLUP for us, HIGH means no-pressing
+  pinMode(KEY_A, INPUT_PULLUP);
+  pinMode(KEY_B, INPUT_PULLUP);
+  pinMode(KEY_C, INPUT_PULLUP);
+  pinMode(KEY_D, INPUT_PULLUP);
+  pinMode(KEY_E, INPUT_PULLUP);
+  pinMode(KEY_F, INPUT_PULLUP);
+
+
+
+  // Keyboard.begin();
+  Serial.begin(9600);
+  delay(5000);
+  Serial.println("Begin!");
+}
+
+void stateCheck(int incomingKey, char* output) {
+  bool incoming = digitalRead(incomingKey);
+
+  if (incoming == STATE_MAP[incomingKey]) {
+    return;
+  }
+
+  strcat(output, &KEY_MAP[incomingKey]);
+
+  STATE_MAP[incomingKey] = incoming;
+}
+
+void loop() {
+  char output[12] = {'\0'};
+  stateCheck(KEY_A, output);
+  stateCheck(KEY_B, output);
+  stateCheck(KEY_C, output);
+  stateCheck(KEY_D, output);
+  stateCheck(KEY_E, output);
+  stateCheck(KEY_F, output);
+
+  Serial.println(output);
+  delay(TAP_MS);
+
+  // Keyboard.print("You pressed the button ");
+  // Keyboard.print(counter);
+  // Keyboard.println(" times.");
+}