Trackball parsing

arduino_micro_code/arduino_micro_code.ino

@@ -1,5 +1,5 @@
-
 #include <Keyboard.h>
+#include <Mouse.h>
 #include <SoftwareSerial.h>
 
 // Setup ---------------------------------------------
@@ -16,19 +16,28 @@ int SoftSerialTX = 9;
 #define KEY_F17 0xF4 // 0x6C + 0x88
 #define KEY_F18 0xF5 // 0x6D + 0x88
 
+#define key_timeout 100
+
 enum parse_mode{
   none,
   regular_key,
   special_key,
-  trackball
+  trackball_x,
+  trackball_y,
+  trackball_key
 };
 
 // Globals -------------------------------------------
 
 parse_mode ParseMode;
 SoftwareSerial KeyboardSerial(SoftSerialRX, SoftSerialTX);
-unsigned long time_since_last_loop;
+unsigned long TrackballY;
+unsigned long TrackballX;
 bool shift;
+bool mouse_left;
+bool mouse_middle;
+bool mouse_right;
+unsigned long time_since_last_key;
 
 // Functions -----------------------------------------
 
@@ -38,13 +47,19 @@ void setup() {
   pinMode(SoftSerialTX, OUTPUT);
   Serial.begin(2400);
   Keyboard.begin();
+  Mouse.begin();
   ParseMode = parse_mode::none;
   KeyboardSerial.begin(2400);
   while (!Serial) {
     ;
   }
-  time_since_last_loop = millis();
+  TrackballX = 0;
+  TrackballY = 0;
   shift = false;
+  mouse_left = false;
+  mouse_right = false;
+  mouse_middle = false;
+  time_since_last_key = millis();
 }
 
 void parseRegularKey(unsigned long v)
@@ -132,6 +147,59 @@ void parseSpecialKey(unsigned long v)
   if (v == 101) Keyboard.write(KEY_ESC);
 }
 
+void parse_trackball(unsigned long x, unsigned long y)
+{
+  Mouse.move(x, -y);
+}
+
+void parse_trackball_key(unsigned long v)
+{
+  switch(v)
+  {
+    case 0x40: // T1 key
+      Mouse.press(MOUSE_LEFT);
+      mouse_left = true;
+      //Serial.println("Pressed left mouse");
+      break;
+    case 0x41: // T2 key
+      Mouse.press(MOUSE_MIDDLE);
+      //Serial.println("Pressed middle mouse");
+      mouse_middle = true;
+      break;
+    case 0x42: // T3 key
+      Mouse.press(MOUSE_RIGHT);
+      //Serial.println("Pressed right mouse");
+      mouse_right = true;
+      break;
+  }
+}
+
+void detect_key_release()
+{
+  if ((millis() - time_since_last_key) > key_timeout)
+  {
+    Keyboard.releaseAll();
+    if (mouse_right == true)
+    {
+      Mouse.release(MOUSE_RIGHT);
+      mouse_right = false;
+      //Serial.println("Released right mouse");
+    }
+    if (mouse_left == true)
+    {
+      Mouse.release(MOUSE_LEFT);
+      mouse_left = false;
+      //Serial.println("Released left mouse");
+    }
+    if (mouse_middle == true)
+    {
+      Mouse.release(MOUSE_MIDDLE);
+      mouse_middle = false;
+      //Serial.println("Released middle mouse");
+    }
+  }
+}
+
 void loop() {
   KeyboardSerial.listen();
   if (KeyboardSerial.available()) 
@@ -147,6 +215,12 @@ void loop() {
         ParseMode = parse_mode::special_key;
         Serial.println("Special key");
         break;
+      case 0xA2:
+        ParseMode = parse_mode::trackball_x;
+        break;
+      case 0xA4:
+        ParseMode = parse_mode::trackball_key;
+        break;
       default:
         if (ParseMode == parse_mode::regular_key)
         {
@@ -156,14 +230,29 @@ void loop() {
         {
           parseSpecialKey(v);
         }
+        else if (ParseMode == parse_mode::trackball_x)
+        {
+          TrackballX = v;
+          ParseMode = parse_mode::trackball_y;
+        }
+        else if (ParseMode == parse_mode::trackball_y)
+        {
+          TrackballY = v;
+          ParseMode = parse_mode::none;
+          parse_trackball(TrackballX, TrackballY);
+        }
+        else if (ParseMode == parse_mode::trackball_key)
+        {
+          parse_trackball_key(v);
+        }
         break;
     }
-    Serial.println(v, BIN);
+    //Serial.println(v, BIN);
-    Serial.println(v, DEC);
+    //Serial.println(v, HEX);
+    time_since_last_key = millis();
   }
   else
   {
-    Keyboard.releaseAll();
+    detect_key_release();
   }
-  delay(20);
 }