352 lines
10 KiB
Arduino
352 lines
10 KiB
Arduino
// esp32 capacitive touch interface /////////////////////////////////////////////////
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// rob canning 2023 /////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////
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const int ledPin = 23;
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const int shiftLedPin = 25;
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const int loopLedPin = 26;
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const int threshold = 14000; // set the threshold
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int ledState = LOW; // the current state of the output pin
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int shiftLedState = HIGH; // the current state of the output pin
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int loopLedState = LOW; // the current state of the output pin
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///////////////////////////////////////////////////////
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#include <Adafruit_NeoPixel.h>
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// On the ESP32S2 SAOLA GPIO is the NeoPixel.
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#define PIN 18
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//Single NeoPixel
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Adafruit_NeoPixel pixels(1, PIN, NEO_GRB + NEO_KHZ800);
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#define DELAYVAL 25 // Time (in milliseconds) to pause between color change
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//#include <SPI.h> // Serial Peripheral Interface
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///////////////////////////////////////////////////////
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#include <Wire.h> // allows you to communicate with I2C / TWI devices
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#include <Adafruit_MPR121.h>
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#ifndef _BV
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#define _BV(bit) (1 << (bit))
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#endif
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// You can have up to 4 on one i2c bus but one is enough for testing!
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Adafruit_MPR121 cap = Adafruit_MPR121();
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// Keeps track of the last pins touched
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// so we know when buttons are 'released'
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uint16_t lasttouched = 0;
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uint16_t currtouched = 0;
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// Wi-Fi SETTINGS /////////////
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#include <WiFi.h>
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const char* ssid = "zavod rizoma_EXT";
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const char* password = "cermozise";
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// BROADCAST TO ALL IP / port
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const IPAddress castIp = IPAddress(192,168,0,255); // 255 FOR BROADCAST
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const int port = 57120; // SUPERCOLLIDERS DEFAULT INCOMING OSC PORT
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bool connected = false;
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#include <WiFiUdp.h>
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WiFiUDP udp;
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// OSC and serial communications ////////////////////////////
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#define SERIAL_OSC
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#define WIFI_OSC
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#include <OSCBundle.h>
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#include <OSCMessage.h>
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#include <OSCBoards.h>
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/* OSC MSG channels */
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OSCBundle bundle;
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// SERIAL
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#ifdef BOARD_HAS_USB_SERIAL
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#include <SLIPEncodedUSBSerial.h>
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SLIPEncodedUSBSerial SLIPSerial( thisBoardsSerialUSB );
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#else
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#include <SLIPEncodedSerial.h>
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SLIPEncodedSerial SLIPSerial(Serial);
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#endif
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//////////////////////////////////////////
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// CAPACITIVE TOUCH SETUP
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byte keys[] = {1,2,3,4,5,6,7,10,11,12,13,14};
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byte KEYLEN = 12;
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byte pressed[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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byte lastTouchState[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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byte touchState[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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byte lastDebounceTime[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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unsigned long debounceDelay = 50; // the debounce time; increase if the output flickers
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//int THRESH = 40; // capacitive noise threshold
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///////////////////////////////////////////
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void setup() {
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pixels.setBrightness(5);
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pixels.begin(); // INITIALIZE NeoPixel (REQUIRED)
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pinMode(ledPin, OUTPUT); //Define ledPin as output
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pinMode(shiftLedPin, OUTPUT); //Define ledPin as output
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pinMode(loopLedPin, OUTPUT); //Define ledPin as output
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digitalWrite(ledPin, ledState);
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digitalWrite(shiftLedPin, shiftLedState);
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digitalWrite(loopLedPin, loopLedState);
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Serial.begin(115200);
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WiFi.mode(WIFI_AP);
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connectWiFi();
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const String macAddress = WiFi.macAddress(); ;
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// Default address is 0x5A, if tied to 3.3V its 0x5B
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// If tied to SDA its 0x5C and if SCL then 0x5D
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if (!cap.begin(0x5A)) {
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Serial.println("MPR121 not found, check wiring?");
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while (1);
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}
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Serial.println("MPR121 found!");
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// I2C init
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//Serial.println("Starting up I2C");
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//Wire.begin();
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//Wire.setClock(400000); // 400kHz I2C clock. Comment this line if having compilation difficulties
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//
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//Serial.println("starting I2C (Wire.begin)...");
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#ifdef SERIAL_OSC
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SLIPSerial.begin(115200); // set this as high as you can reliably run on your platform
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#endif
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// touch pads
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Serial.println("setting INPUT_PULLUP for capacitive touch pins... ");
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for(int i = 0; i < KEYLEN; i++) {
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pinMode(keys[i], INPUT_PULLUP);
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}
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} // setup ends //////////////////////////////////////////////////
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// MAIN LOOP /////////////////////////////////////////////////////////
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int colorCount = 0;
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void loop() {
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//Set the new color on the pixel.
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pixels.setPixelColor(0, Wheel(colorCount++));
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pixels.show();
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//Cycle the colors at the end.
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if (colorCount > 255)
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colorCount = 0;
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sendCapacitive();
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sendCapacitiveOlimex();
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}
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// FUNCTIONS /////////////////////////////////////////////
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// Simple function to return a color in the rainbow
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// Input a value 0 to 255 to get a color value.
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uint32_t Wheel(byte WheelPos)
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{
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//Assume the wheel value is less than 85, if so Green value is 0
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uint32_t returnColor = Adafruit_NeoPixel::Color((byte)(255 - (WheelPos * 3)), 0, (byte)(WheelPos * 3));
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//If we are greater than 170 Red value is 0
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if (WheelPos > 84 && WheelPos < 170)
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{
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WheelPos -= 85;
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returnColor = Adafruit_NeoPixel::Color(0, (byte)(WheelPos * 3), (byte)(255 - WheelPos * 3));
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}
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//Finally above 170 and Blue value is 0
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else if (WheelPos >= 170)
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{
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WheelPos -= 170;
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returnColor = Adafruit_NeoPixel::Color((byte)(WheelPos * 3), (byte)(255 - WheelPos * 3), 0);
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}
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return returnColor;
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}
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void connectWiFi(){
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// Connect to Wi-Fi network with SSID and password
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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// Print local IP address and start web server
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// Serial.println("");
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Serial.println("WiFi connected.");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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}
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// detect touch events and send over OSC //////////////
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void sendCapacitive(void){
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// Get the currently touched pads
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currtouched = cap.touched();
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for (uint8_t i=0; i<KEYLEN; i++) {
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// it if *is* touched and *wasnt* touched before, alert!
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if ((currtouched & _BV(i)) && !(lasttouched & _BV(i)) ) {
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Serial.print(i); Serial.println(" touched");
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ledState = !ledState;
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OSCMessage msg("/touch_121_A");
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msg.add(WiFi.macAddress().c_str()); // mac address of sender
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msg.add((int32_t)i); // send which sensor was touched
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#ifdef WIFI_OSC
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udp.beginPacket(castIp, port);
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//bundle.send(udp);
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msg.send(udp);
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udp.endPacket();
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#endif
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String cap = "val for key num: " + String(i) + " === " + String(HIGH);
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Serial.println("OSC SENT "); Serial.println(cap);
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}
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// if it *was* touched and now *isnt*, alert!
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if (!(currtouched & _BV(i)) && (lasttouched & _BV(i)) ) {
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Serial.print(i); Serial.println(" released");
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OSCMessage msg("/release_121_A");
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msg.add(WiFi.macAddress().c_str()); // mac address of sender
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msg.add((int32_t)i); // send which sensor was touched
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#ifdef WIFI_OSC
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udp.beginPacket(castIp, port);
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//bundle.send(udp);
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msg.send(udp);
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udp.endPacket();
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#endif
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String cap = "val for key num: " + String(i) + " === " + String(LOW);
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Serial.println("OSC SENT "); Serial.println(cap);
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}
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}
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// reset our state
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lasttouched = currtouched;
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/*
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// comment out this line for detailed data from the sensor!
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// return;
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// debugging info, what
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Serial.print("\t\t\t\t\t\t\t\t\t\t\t\t\t 0x"); Serial.println(cap.touched(), HEX);
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Serial.print("Filt: ");
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for (uint8_t i=0; i<KEYLEN; i++) {
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Serial.print(cap.filteredData(i)); Serial.print("\t");
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}
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Serial.println();
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Serial.print("Base: ");
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for (uint8_t i=0; i<KEYLEN; i++) {
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Serial.print(cap.baselineData(i)); Serial.print("\t");
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}
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Serial.println();
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*/
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// put a delay so it isn't overwhelming
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delay(5);
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//return;
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/////////////////////////////////////////////////////////////////////////////////////////
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//Serial.println(int(currtouched+pow(2,12)),BIN);
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//Serial.print("<");
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//Serial.println(">");
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} //////////////////
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void sendCapacitiveOlimex(void){
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for(int i = 0; i < KEYLEN; i++) {
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// read the state of the touch pad
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pressed[i] = touchRead(keys[i]);
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Serial.println(pressed[i]);
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// if (pressed[i] < threshold) {
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if (touchRead(keys[i]) < threshold) {
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pressed[i] = HIGH;
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} else{
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pressed[i] = LOW;
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}
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// If the pin is touched:
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if (pressed[i] != lastTouchState[i]) {
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// reset the debouncing timer
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lastDebounceTime[i] = millis();
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}
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if ((millis() - lastDebounceTime[i]) > debounceDelay) {
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// whatever the reading is at, it's been there for longer than the debounce
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// delay, so take it as the actual current state:
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// if the touch state has changed:
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if (pressed[i] != touchState[i]) {
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touchState[i] = pressed[i];
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// Serial.println("-------------------------------------- ");
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digitalWrite(ledPin, HIGH); // toggle the led on any touch
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pixels.setBrightness(5);
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// only toggle the LED if the new touch state is high
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if (touchState[i] == HIGH) {
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pixels.setBrightness(25);
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ledState = !ledState;
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OSCMessage msg("/touch_esp32");
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msg.add(WiFi.macAddress().c_str()); // mac address of sender
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msg.add((int32_t)i); // send which sensor was touched
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msg.add((int32_t)touchRead(keys[i])); // send which sensor was touched
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// pressed[i]
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#ifdef WIFI_OSC
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udp.beginPacket(castIp, port);
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//bundle.send(udp);
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msg.send(udp);
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udp.endPacket();
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#endif
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String cap = "val for key num: " + String(i) + " === " + String(pressed[i]);
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Serial.println(""); Serial.println(cap);
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}
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if (touchState[7] == HIGH) {
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digitalWrite(loopLedPin, loopLedState);
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loopLedState = !loopLedState;
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}
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if (touchState[8] == HIGH) {
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digitalWrite(shiftLedPin, shiftLedState);
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shiftLedState = !shiftLedState;
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}
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}
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}
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// set the LED:
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digitalWrite(ledPin, ledState);
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// save the reading. Next time through the loop, it'll be the lastTouchState:
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lastTouchState[i] = pressed[i];
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}
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} //////////////////
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