From 379891343318e4324f20c5268c6782f0e635d557 Mon Sep 17 00:00:00 2001
From: Rob Canning <rc@kiben.net>
Date: Tue, 12 Sep 2023 18:19:50 +0200
Subject: [PATCH] esp32 code for mpr121 x 2 connected to vroom 38pin

---
 esp32_vroom_38pin/esp32_vroom_38pin.ino | 200 ++++++++++++++++++++++++
 1 file changed, 200 insertions(+)
 create mode 100644 esp32_vroom_38pin/esp32_vroom_38pin.ino

diff --git a/esp32_vroom_38pin/esp32_vroom_38pin.ino b/esp32_vroom_38pin/esp32_vroom_38pin.ino
new file mode 100644
index 0000000..13ba1fc
--- /dev/null
+++ b/esp32_vroom_38pin/esp32_vroom_38pin.ino
@@ -0,0 +1,200 @@
+// esp32 capacitive touch interface /////////////////////////////////////////////////
+// rob canning 2023 /////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////
+// flash mode changed to DIO !!!
+// NEOPIXEL ////////////////////////////////////////////////////
+#include <WS2812FX.h> // https://github.com/kitesurfer1404/WS2812FX
+
+// On the ESP32S2 SAOLA GPIO is the NeoPixel.
+#define PIN        25 
+//Single NeoPixel
+
+WS2812FX ws2812fx = WS2812FX(12, PIN, NEO_GRB + NEO_KHZ800);
+
+#define DELAYVAL 25 // Time (in milliseconds) to pause between color change
+//#include <SPI.h> // Serial Peripheral Interface
+
+// MPR121 /////////////////////////////////////////////////////
+#include <Wire.h> // allows you to communicate with I2C / TWI devices
+#include <Adafruit_MPR121.h>
+
+#ifndef _BV
+#define _BV(bit) (1 << (bit)) 
+#endif
+// You can have up to 4 on one i2c bus but one is enough for testing!
+Adafruit_MPR121 cap0 = Adafruit_MPR121();
+Adafruit_MPR121 cap1 = Adafruit_MPR121();
+
+// Keeps track of the last pins touched
+// so we know when buttons are 'released'
+uint16_t lasttouched[2];
+uint16_t currtouched[2];
+
+// Wi-Fi SETTINGS /////////////
+
+#include <WiFi.h>
+const char* ssid     = "zavod rizoma";
+const char* password = "cermozise";
+// BROADCAST TO ALL IP / port
+const IPAddress castIp = IPAddress(192,168,0,255);  // 255 FOR BROADCAST
+const int port = 57120; // SUPERCOLLIDERS DEFAULT INCOMING OSC PORT
+bool connected = false;
+#include <WiFiUdp.h>
+WiFiUDP udp;
+
+// OSC and serial communications  ////////////////////////////
+
+#define SERIAL_OSC
+#define WIFI_OSC
+#include <OSCBundle.h>
+#include <OSCMessage.h>
+#include <OSCBoards.h>
+/* OSC MSG channels */
+OSCBundle bundle;
+
+// SERIAL /////////////////////////////////
+#ifdef BOARD_HAS_USB_SERIAL
+#include <SLIPEncodedUSBSerial.h>
+SLIPEncodedUSBSerial SLIPSerial( thisBoardsSerialUSB );
+#else
+#include <SLIPEncodedSerial.h>
+SLIPEncodedSerial SLIPSerial(Serial);
+#endif
+
+
+///////////////////////////////////////////
+
+byte KEYLEN = 12;
+
+void setup() {
+  ws2812fx.init();
+  ws2812fx.setBrightness(10);
+
+  // parameters: index, start, stop, mode, color, speed, reverse
+  ws2812fx.setSegment(0,  0,  11, FX_MODE_BREATH, 0xFFFFFF, 1000, false); // segment 0 is leds 0 - 9
+  //ws2812fx.setSegment(1, 0, 0, FX_MODE_BREATH,  0xFF0000, 300, false); // segment 1 is leds 10 - 19
+  //ws2812fx.setSegment(2, 6, 11, FX_MODE_BREATH, 0x0000FF, 400, true);  // segment 2 is leds 20 - 29
+
+  ws2812fx.start();
+
+  Serial.begin(115200);
+  WiFi.mode(WIFI_AP);
+  connectWiFi();
+  
+  const String macAddress = WiFi.macAddress(); ;
+  
+  // Default address is 0x5A, if tied to 3.3V its 0x5B         
+  // If tied to SDA its 0x5C and if SCL then 0x5D
+  if (!cap0.begin(0x5A)) {                                          
+    Serial.println("MPR121 A not found, check wiring?");             
+    while (1);
+  } Serial.println("MPR121 A found!");  
+  
+  
+  if (!cap1.begin(0x5C)) {                                          
+      Serial.println("MPR121 B not found, check wiring?");             
+    while (1);
+    } Serial.println("MPR121 B found!");
+      
+
+//cap0.setThreshholds(20, 6);
+//cap1.setThreshholds(20, 6);
+
+#ifdef SERIAL_OSC
+  SLIPSerial.begin(115200);   // set this as high as you can reliably run on your platform 
+#endif
+  
+} // setup ends //////////////////////////////////////////////////
+
+
+// MAIN LOOP /////////////////////////////////////////////////////////
+
+int colorCount = 0;
+
+
+void loop() { 
+  ws2812fx.service();   
+  sendCapacitive(cap0, 0); // from the 121
+  sendCapacitive(cap1, 1); // from the 121  
+}
+
+// FUNCTIONS /////////////////////////////////////////////
+
+void connectWiFi(){
+  // Connect to Wi-Fi network with SSID and password
+  Serial.print("Connecting to ");
+  Serial.println(ssid);
+  WiFi.begin(ssid, password);
+  while (WiFi.status() != WL_CONNECTED) {
+    ws2812fx.setPixelColor(0, ws2812fx.Color(0,3,222));
+    delay(500);
+    Serial.print(".");
+  }
+  
+  // Print local IP address and start web server
+  //  Serial.println("");
+  Serial.println("WiFi connected.");
+  Serial.println("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+// detect touch events and send over OSC //////////////
+
+void sendCapacitive(Adafruit_MPR121 sensorboard, int index){ 
+ // Get the currently touched pads
+  currtouched[index] = sensorboard.touched() ;
+    
+  for (uint8_t i=0; i<KEYLEN; i++) {
+   // it if *is* touched and *wasnt* touched before, alert!
+    if ((currtouched[index] & _BV(i)) && !(lasttouched[index] & _BV(i)) ) {
+      Serial.print(i); Serial.println(" touched");
+      ws2812fx.setSegment(0,  i,  i, FX_MODE_STATIC, 0xFFFFFF, 700, false); // segment 0 is leds 0 - 9
+
+      //ledState = !ledState;
+
+              OSCMessage msg("/touch");
+              msg.add(WiFi.macAddress().c_str()); // mac address of sender esp32           
+              msg.add((int32_t)i); // send which sensor (0 - 11) was touched
+              msg.add((int32_t)1); // 1 is for touched - below 0 is for release
+              msg.add((int32_t)index); // which sensor board was touched (0 - 1)
+
+              #ifdef WIFI_OSC
+              udp.beginPacket(castIp, port);
+            //bundle.send(udp);
+              msg.send(udp);
+              udp.endPacket();
+             #endif
+
+            String cap = "val for key num: " + String(i) + " === " + String(HIGH);
+            Serial.println("OSC SENT "); Serial.println(cap);       
+    }
+    // if it *was* touched and now *isnt*, alert!
+    if (!(currtouched[index] & _BV(i)) && (lasttouched[index] & _BV(i)) ) {
+      Serial.print(i); Serial.println(" released");
+      //ws2812fx.setSegment(0,  i,  i, FX_MODE_STATIC, BLACK, 800, false); // segment 0 is leds 0 - 9      
+      //ws2812fx.setSegment(1,  0,  11, FX_MODE_BREATH, 0xFF0000, 500, false); // segment 0 is leds 0 - 9      
+
+      OSCMessage msg("/touch");
+      msg.add(WiFi.macAddress().c_str()); // mac address of sender           
+      msg.add((int32_t)i); // send which sensor was touched
+      msg.add((int32_t)0); // 
+      msg.add((int32_t)index); // index of sensor board
+      
+#ifdef WIFI_OSC
+      udp.beginPacket(castIp, port);
+      //bundle.send(udp);
+      msg.send(udp);
+      udp.endPacket();
+#endif
+      
+      String cap = "val for key num: " + String(i) + " === " + String(LOW);
+      Serial.println("OSC SENT "); Serial.println(cap);       
+    }
+  }
+
+  // reset our state
+  lasttouched[index] = currtouched[index];
+  // put a delay so it isn't overwhelming
+  delay(5);
+
+} //////////////////