Cleaned up code and added features

res/data.json

@@ -0,0 +1,3 @@
+{
+    "device-id": "1A86:7523"
+}

src/arduino/arduino-mixer.ino

@@ -5,10 +5,16 @@
 #include <Button.h>
 #include <Encoder.h>
 
-Adafruit_PCD8544 display = Adafruit_PCD8544(14, 15, 16, 17, 18);
+#include "logo.h"
 
-Button button(4);
+// SCLK, DIN, D/C, SCE, RST
-Encoder encoder(3, 2);
+// 10k, 10k, 10k, 1k, 10k
+Adafruit_PCD8544 display = Adafruit_PCD8544(8, 9, 19, 17, 18);
+
+Button button1(4);
+Button button2(6);
+Button button3(7);
+Encoder encoder(2, 3);
 
 // General vars
 unsigned long time;
@@ -24,26 +30,30 @@ long position = 0;
 const byte numChars = 32;
 char receivedChars[numChars];
 char tempChars[numChars];
-
 char command[numChars] = {0};
 
 boolean newData = false;
 
+// Screen related vars
+int light = 128;
+int contrast = 60;
+int lightTimeout = 10;
 
-// Set backlight
+void setBacklight(int value)
-boolean light = 0;
+{
-int timeout = 10000;
+  analogWrite(5, value);
-
+  if (value != 0)
-void toggleBacklight(int value = 128) {
+  {
-  if (light) {
+    light = value;
-    analogWrite(5, 0);
-    light = 0;
-  } else {
-    analogWrite(5, value);
-    light = 1;
   }
 }
 
+void setContrast(int value)
+{
+  display.setContrast(value);
+  contrast = value;
+}
+
 // Set variables for menu
 int programLenght;
 int currentProgram = 0;
@@ -52,7 +62,8 @@ boolean menuUpdate = true;
 float volume = -1;
 
 // Draw screen
-void drawMenu() {
+void drawMenu()
+{
   display.clearDisplay();
   display.setFont(&Picopixel);
 
@@ -71,33 +82,40 @@ void drawMenu() {
   display.setFont(NULL);
 
   // Check for connection
-  if (connected && dataReady) {
+  if (connected && dataReady)
+  {
     // Program name
     drawName();
 
     // Volume Bar
     drawBar();
-  } else {
+  }
+  else
+  {
     // Blink connection message if not connected
     if (time % 500 == 0)
     {
       blink = (!blink) ? true : false;
     }
 
+    display.drawBitmap(0, 7, logo, 84, 16, 1);
+    display.setFont(&Picopixel);
+
     if (!blink)
     {
-      display.setCursor(9, 10);
-      display.print("Waiting for");
       if (!connected)
       {
-        display.setCursor(12, 18);
+        display.setCursor(4, 28);
-        display.print("Connection");
+        display.print("Waiting for connection");
-      } else if (!dataReady)
+      }
+      else if (!dataReady)
       {
-        display.setCursor(30, 18);
+        display.setCursor(15, 28);
-        display.print("Data");
+        display.print("Waiting for data");
       }
     }
+
+    display.setFont(NULL);
   }
 
   // Bottom Bar
@@ -108,7 +126,9 @@ void drawMenu() {
     if (editing)
     {
       display.print(" -    OK    + ");
-    } else {
+    }
+    else
+    {
       display.print(" <    OK    > ");
     }
   }
@@ -117,10 +137,11 @@ void drawMenu() {
 }
 
 // Bar position
-const int pos[2] = { 4, 26 };
+const int pos[2] = {4, 26};
 
 // Draw volume bar and text
-void drawBar() {
+void drawBar()
+{
   // Set fonts and size
   display.setFont(&Picopixel);
   display.setCursor(4, pos[1] - 2);
@@ -133,11 +154,16 @@ void drawBar() {
   }
 
   // Center percentage
-  if (volume == 0) {
+  if (volume == 0)
+  {
     display.setCursor(39, pos[1] - 2);
-  } else if (volume == 100) {
+  }
+  else if (volume == 100)
+  {
     display.setCursor(36, pos[1] - 2);
-  } else {
+  }
+  else
+  {
     display.setCursor(37, pos[1] - 2);
   }
 
@@ -159,7 +185,8 @@ void drawBar() {
 }
 
 // Draw program name in the middle of the display or scroll it
-void drawName() {
+void drawName()
+{
   int width = 0;
   for (size_t i = 0; i < sizeof(programName); i++)
   {
@@ -172,163 +199,204 @@ void drawName() {
   if (width > 84)
   {
     // TODO: Make the text scroll if the name is too long
-  } else {
+  }
+  else
+  {
     int x = (84 / 2) - (width / 2);
     display.setCursor(x, 10);
   }
   display.print(programName);
 }
 
-void processData() {
+void processData()
-    if (newData == true) {
+{
-        strcpy(tempChars, receivedChars);
+  if (newData == true)
+  {
+    strcpy(tempChars, receivedChars);
 
-        char * strtokIndx;
+    char *strtokIndx;
 
-        strtokIndx = strtok(tempChars,",");
+    strtokIndx = strtok(tempChars, ",");
-        strcpy(command, strtokIndx);
+    strcpy(command, strtokIndx);
 
-        strtokIndx = strtok(NULL, ",");
+    strtokIndx = strtok(NULL, ",");
 
-        if (strcmp("HELLO", command) == 0)
+    if (strcmp("HELLO", command) == 0)
-        {
+    {
-          connected = true;
+      connected = true;
-          Serial.println("<OK>");
+      Serial.println("<OK>");
-          Serial.println("<COUNT>");
+      Serial.println("<COUNT>");
-          Serial.println("<SWITCH," + (String)currentProgram + ">");
+      Serial.println("<SWITCH," + (String)currentProgram + ">");
-        } 
-        else if (strcmp("COUNT", command) == 0)
-        {
-          programLenght = atoi(strtokIndx);
-          Serial.println("<OK>");
-        } 
-        else if (strcmp("CURRENT", command) == 0)
-        {
-          currentProgram = atoi(strtokIndx);
-          Serial.println("<OK>");
-        } 
-        else if (strcmp("NAME", command) == 0) 
-        {
-          strcpy(programName, strtokIndx);
-          Serial.println("<OK>");
-        } 
-        else if (strcmp("GETVOL", command) == 0) 
-        {
-          volume = atoi(strtokIndx);
-          Serial.println("<OK>");
-        }
-
-        newData = false;
-        dataReady = true;
     }
+    else if (strcmp("COUNT", command) == 0)
+    {
+      programLenght = atoi(strtokIndx);
+      Serial.println("<OK>");
+    }
+    else if (strcmp("CURRENT", command) == 0)
+    {
+      currentProgram = atoi(strtokIndx);
+      Serial.println("<OK>");
+    }
+    else if (strcmp("NAME", command) == 0)
+    {
+      strcpy(programName, strtokIndx);
+      Serial.println("<OK>");
+    }
+    else if (strcmp("GETVOL", command) == 0)
+    {
+      volume = atoi(strtokIndx);
+      Serial.println("<OK>");
+    }
+
+    newData = false;
+    dataReady = true;
+  }
 }
 
-void checkSerial() {
+void checkSerial()
-    static boolean recvInProgress = false;
+{
-    static byte ndx = 0;
+  static boolean recvInProgress = false;
-    char startMarker = '<';
+  static byte ndx = 0;
-    char endMarker = '>';
+  char startMarker = '<';
-    char rc;
+  char endMarker = '>';
+  char rc;
 
-    while (Serial.available() > 0 && newData == false) {
+  while (Serial.available() > 0 && newData == false)
-        rc = Serial.read();
+  {
+    rc = Serial.read();
 
-        if (recvInProgress == true) {
+    if (recvInProgress == true)
-            if (rc != endMarker) {
-                receivedChars[ndx] = rc;
-                ndx++;
-                if (ndx >= numChars) {
-                    ndx = numChars - 1;
-                }
-            }
-            else {
-                receivedChars[ndx] = '\0'; // terminate the string
-                recvInProgress = false;
-                ndx = 0;
-                newData = true;
-            }
-        }
-
-        else if (rc == startMarker) {
-            recvInProgress = true;
-        }
-    }
-
-    processData();
-}
-
-// Check for button input
-// TODO: Improve encoder input
-void checkInput(unsigned long time) {
-  long newPosition = encoder.read();
-  if (newPosition != position) {
-    menuUpdate = true;
-    if (newPosition < position - 3) // Rotating anti-clockwise
     {
-      if (!editing)
+      if (rc != endMarker)
       {
-        if (currentProgram == 0)
+        receivedChars[ndx] = rc;
+        ndx++;
+        if (ndx >= numChars)
         {
-          currentProgram = programLenght - 1;
+          ndx = numChars - 1;
-        } else {
-          currentProgram--;
-        }
-        Serial.println("<SWITCH," + (String)currentProgram + ">");
-      } else {
-        if (volume != 0)
-        {
-          Serial.println("<SETVOL," + (String)(volume - 1) + ">");
         }
       }
-      position = newPosition;
+      else
-    }
-    if (newPosition > position + 3) // Rotating clockwise
-    {
-      if (!editing)
       {
-        if (currentProgram == programLenght - 1)
+        receivedChars[ndx] = '\0'; // terminate the string
-        {
+        recvInProgress = false;
-          currentProgram = 0;
+        ndx = 0;
-        } else {
+        newData = true;
-          currentProgram++;
-        }
-        Serial.println("<SWITCH," + (String)currentProgram + ">");
-      } else {
-        if (volume != 100)
-        {
-          Serial.println("<SETVOL," + (String)(volume + 1) + ">");
-        }
       }
-      position = newPosition;
+    }
+
+    else if (rc == startMarker)
+    {
+      recvInProgress = true;
     }
   }
 
-  if (button.pressed())
+  processData();
+}
+
+boolean input = false;
+
+// Check for button input
+void checkInput(unsigned long time)
+{
+  input = false;
+  int value = 0;
+  long newPosition = encoder.read();
+
+  // Encoder button
+  if (button1.pressed())
   {
+    input = true;
     editing = (editing) ? 0 : 1;
   }
+
+  if (newPosition != position)
+  {
+
+    if (newPosition < position - 3) // Rotating anti-clockwise
+    {
+      value = -1;
+    }
+    else if (newPosition > position + 3)
+    { // Rotating clockwise
+      value = 1;
+    }
+
+    if (value != 0)
+    {
+      position = newPosition;
+      menuUpdate = true;
+      input = true;
+
+      if (button2.read() == Button::PRESSED)
+      {
+        // Change backlight
+        if (!(light + value < 0) && !(light + value > 254))
+        {
+          setBacklight(light + value);
+        }
+      } else if (button3.read() == Button::PRESSED)
+      {
+        // Change contrast
+        if (!(contrast + value < 0) && !(contrast + value > 100))
+        {
+          setContrast(contrast + value);
+        }
+      }
+      else if (!editing)
+      {
+        // Change program
+        if (currentProgram + value < 0)
+        {
+          currentProgram = programLenght - 1;
+        }
+        else if (currentProgram + value > programLenght - 1)
+        {
+          currentProgram = 0;
+        }
+        else
+        {
+          currentProgram = currentProgram + value;
+        }
+
+        Serial.println("<SWITCH," + (String)(currentProgram) + ">");
+      }
+      else
+      {
+        // Change volume
+        if (!(volume + value < 0) && !(volume + value > 100))
+        {
+          Serial.println("<SETVOL," + (String)(volume + value) + ">");
+        }
+      }
+    }
+  }
 }
 
 // Init arduino
-void setup()   {
+void setup()
+{
   // Start serial connection
   Serial.begin(115200);
 
   // Init button
-  button.begin();
+  button1.begin();
+  button2.begin();
+  button3.begin();
 
   // Init display
   display.begin();
-  display.setContrast(50);
+
-  toggleBacklight();
+  setContrast(contrast);
+  setBacklight(light);
+
   display.clearDisplay();
   display.display();
-
-  // TODO: Remove testing variables
-  currentProgram = 0;
 }
 
-void loop() {
+void loop()
+{
   // Check time
   time = millis();
   menuUpdate = (time % 1000 == 0) ? true : false;
@@ -343,7 +411,23 @@ void loop() {
     blink = false;
   }
 
+  if (input || newData)
+  {
+    lightTimeout = 10;
+    setBacklight(light);
+  }
 
+  if (lightTimeout <= 0)
+  {
+    setBacklight(0);
+  }
+  else
+  {
+    if (time % 1000 == 0)
+    {
+      lightTimeout--;
+    }
+  }
 
   // Check for serial data or commands
   checkSerial();
@@ -352,15 +436,17 @@ void loop() {
   if (connected && dataReady)
   {
     // Draw menu every second or every 0.1 second when editing
-    if (menuUpdate || (editing && time % 100 == 0)) {
+    if (menuUpdate || (editing && time % 100 == 0))
+    {
       menuUpdate = false;
       drawMenu();
     }
 
     // Check input
     checkInput(time);
-
+  }
-  } else {
+  else
+  {
     if (menuUpdate)
     {
       // Draw menu with "Waiting for connection", name and volume are ignored bij drawMenu()

src/arduino/logo.h

@@ -0,0 +1,14 @@
+// 'AudioMixer', 84x16px
+const unsigned char logo [] PROGMEM = {
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7b, 0x30, 0x00, 0x00, 0x00, 
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7b, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+	0x00, 0x33, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x31, 0xfc, 0x00, 
+	0x05, 0x00, 0x3f, 0xc8, 0x00, 0x00, 0x00, 0x33, 0x30, 0x04, 0x00, 0x04, 0x00, 0x20, 0x40, 0x00, 
+	0x00, 0x00, 0x33, 0x78, 0x04, 0x00, 0x04, 0x00, 0x22, 0x40, 0x00, 0x00, 0x00, 0x33, 0x79, 0xfd, 
+	0x05, 0xfd, 0x3f, 0xa2, 0x49, 0x0b, 0xfb, 0xe0, 0x33, 0x31, 0x05, 0x05, 0x01, 0x20, 0xa2, 0x48, 
+	0x92, 0x0a, 0x00, 0x33, 0x31, 0x05, 0x05, 0x01, 0x20, 0xa2, 0x48, 0x62, 0xf2, 0x00, 0x33, 0x31, 
+	0x05, 0x05, 0x01, 0x20, 0xa2, 0x48, 0x92, 0x02, 0x00, 0x33, 0x31, 0x05, 0xfd, 0xfd, 0x3f, 0xa2, 
+	0x49, 0x0b, 0xfa, 0x00, 0x37, 0xb0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x37, 
+	0xb0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x30, 0x00, 0x00, 0x00, 0x00, 
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};

src/python/start.py

@@ -11,7 +11,7 @@ def main():
     sessions = AudioUtilities.GetAllSessions()
     print (str(len(sessions)) + " audio sessions found:")
     for session in sessions:
-        print ("  " + str(session))
+        print ("  " + str(session.DisplayName) + ": " + str(session.Process and session.Process.name()))
 
     # Init serial connection
     ports = serial.tools.list_ports.comports()
@@ -70,13 +70,14 @@ def main():
                     
                     if program.DisplayName == "@%SystemRoot%\System32\AudioSrv.Dll,-202":
                         name = "Systeem"
-                    # TODO: This line is being overwritten somehow
+                    elif str(program.Process and program.Process.name()) == "firefox.exe":
-                    elif session.Process and session.Process.name() == "firefox.exe":
                         name = "Firefox"
+                    elif str(program.Process and program.Process.name()) == "Discord.exe":
+                        name = "Discord"
                     elif program.DisplayName != "":
                         name = str(program.DisplayName)
                     else:
-                        name = str(session.Process and session.Process.name())
+                        name = str(program.Process and program.Process.name())
                     
                     board.write(("<NAME," + name + ">").encode())
                     board.write(("<GETVOL," + str(round(volume * 100)) + ">").encode())