From 2308bfdeab1e9e85898fded4aa5805108959b591 Mon Sep 17 00:00:00 2001
From: Marc Monka <marc.monka@gmail.com>
Date: Wed, 19 Nov 2025 12:36:34 +0100
Subject: [PATCH] Pitch slider modification

Arduino sends now LSB / MSB to have 14 bit resolution for the pitch slider. Mapping modified. We have now tempo increments of 0,01%.
---
 arduino/XDJ100SX.ino         | 38 +++++++++++++++++++++++++++++++++---
 mixxx/MIDI/XDJ100SX.js       | 32 ++++++++++++++++++++++++++++--
 mixxx/MIDI/XDJ100SX.midi.xml | 23 +++++++++++++++++-----
 3 files changed, 83 insertions(+), 10 deletions(-)

diff --git a/arduino/XDJ100SX.ino b/arduino/XDJ100SX.ino
index a6931db..eb4c9d0 100644
--- a/arduino/XDJ100SX.ino
+++ b/arduino/XDJ100SX.ino
@@ -41,15 +41,25 @@ elapsedMillis debounceTime_browse;  // Temps per filtrar rebots browse¡
 Encoder browse(browseA_pin, browseB_pin);
 long lastPosition_browse = 0;       // Última posició llegida
 
-//Pitch slider old
+elapsedMillis msec = 0;
+
+
+/* Pitch slider old
 const int pitch_pin = A0;
 const int channel_pitch = 3;
 const int controllerA0 = 7;
 int previousA0 = -1;
-elapsedMillis msec = 0;
 ResponsiveAnalogRead analog(pitch_pin, true);
+*/
 
 
+//Pitch new
+
+const int pitchPin = A0;
+ResponsiveAnalogRead analog(pitchPin, true);
+int lastMSB = -1;
+int lastLSB = -1;
+
 
 
 // MIDI OUT - Leds
@@ -375,7 +385,7 @@ long newPosition_browse = browse.read();
   }
 }
 
-//Pitch 
+/* Pitch old
 if (msec >= 100){
   msec = 0;
   int n0 = analogRead(A0) / 8;
@@ -385,6 +395,28 @@ if (msec >= 100){
     previousA0 = n0;
    }
 }
+*/
+
+//Pitch 14 bits
+
+analog.update();
+  int raw = analog.getValue();   // valor ja suavitzat
+
+  int value14 = map(raw, 0, 1023, 0, 16383);
+
+  byte msb = (value14 >> 7) & 0x7F;
+  byte lsb = value14 & 0x7F;
+
+  if (msb != lastMSB) {
+    usbMIDI.sendControlChange(0, msb, 1);
+    lastMSB = msb;
+  }
+
+  if (lsb != lastLSB) {
+    usbMIDI.sendControlChange(32, lsb, 1);
+    lastLSB = lsb;
+  }
+
 
 
 
diff --git a/mixxx/MIDI/XDJ100SX.js b/mixxx/MIDI/XDJ100SX.js
index fac377f..d1afa58 100644
--- a/mixxx/MIDI/XDJ100SX.js
+++ b/mixxx/MIDI/XDJ100SX.js
@@ -324,8 +324,8 @@ XDJ100SX.cue = function (channel, control, value, status, group){
 }
 
 
-
-//Pitch Slider
+/*
+//Pitch Slider old
 
 XDJ100SX.pitchLast = 0;
 
@@ -350,6 +350,34 @@ XDJ100SX.pitch = function (channel, control, value, status, group) {
         engine.setValue(group, "rate", normalized);
     }
 };
+*/
+
+
+
+// Pitch slider new
+
+
+XDJ100SX.pitchMSB = 0;
+XDJ100SX.pitchLSB = 0;
+
+XDJ100SX.pitch = function (channel, control, value, status, group) {
+
+    if (control === 0) {        // MSB
+        XDJ100SX.pitchMSB = value;
+    } else if (control === 32) { // LSB
+        XDJ100SX.pitchLSB = value;
+    }
+
+    // Combinar MSB + LSB
+    var full = (XDJ100SX.pitchMSB << 7) | XDJ100SX.pitchLSB; // 0–16383
+
+    // Convertir a rang de Mixxx (-1.0 .. +1.0)
+    var normalized = - (full - 8192) / 8192;
+
+    engine.setValue(group, "rate", normalized);
+};
+
+
 
 
 //Browse Encoder (scroll + canviar vista)
diff --git a/mixxx/MIDI/XDJ100SX.midi.xml b/mixxx/MIDI/XDJ100SX.midi.xml
index 703c62b..4bae985 100644
--- a/mixxx/MIDI/XDJ100SX.midi.xml
+++ b/mixxx/MIDI/XDJ100SX.midi.xml
@@ -9,16 +9,29 @@
         </scriptfiles>
         <controls>
             
-           <control>
+                <control>
+                <description>PITCH MSB</description>
                 <group>[Channel1]</group>
                 <key>XDJ100SX.pitch</key>
-                <description>PITCH</description>
-                <status>0xB2</status>
-                <midino>0x07</midino>
+                <status>0xB0</status>
+                <midino>0x00</midino>
                 <options>
-                <script-binding/>
+                    <script-binding/>
                 </options>
             </control>
+            <control>
+                <group>[Channel1]</group>
+                <key>XDJ100SX.pitch</key>
+                <description>PITCH LSB</description>
+                <status>0xB0</status>
+                <midino>0x20</midino>
+                <options>
+                    <script-binding/>
+                </options>
+            </control>
+
+
+
             <control>
                 <group>[Channel1]</group>
                 <key>play</key>