esp32 code for mpr121 x 2 connected to vroom 38pin
Rob Canning
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394ae3ad2f
commit
3798913433
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// esp32 capacitive touch interface /////////////////////////////////////////////////
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// rob canning 2023 /////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////
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// flash mode changed to DIO !!!
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// NEOPIXEL ////////////////////////////////////////////////////
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#include <WS2812FX.h> // https://github.com/kitesurfer1404/WS2812FX
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// On the ESP32S2 SAOLA GPIO is the NeoPixel.
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#define PIN 25
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//Single NeoPixel
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WS2812FX ws2812fx = WS2812FX(12, 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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// MPR121 /////////////////////////////////////////////////////
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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 cap0 = Adafruit_MPR121();
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Adafruit_MPR121 cap1 = 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[2];
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uint16_t currtouched[2];
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// Wi-Fi SETTINGS /////////////
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#include <WiFi.h>
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const char* ssid = "zavod rizoma";
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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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byte KEYLEN = 12;
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void setup() {
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ws2812fx.init();
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ws2812fx.setBrightness(10);
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// parameters: index, start, stop, mode, color, speed, reverse
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ws2812fx.setSegment(0, 0, 11, FX_MODE_BREATH, 0xFFFFFF, 1000, false); // segment 0 is leds 0 - 9
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//ws2812fx.setSegment(1, 0, 0, FX_MODE_BREATH, 0xFF0000, 300, false); // segment 1 is leds 10 - 19
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//ws2812fx.setSegment(2, 6, 11, FX_MODE_BREATH, 0x0000FF, 400, true); // segment 2 is leds 20 - 29
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ws2812fx.start();
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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 (!cap0.begin(0x5A)) {
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Serial.println("MPR121 A not found, check wiring?");
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while (1);
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} Serial.println("MPR121 A found!");
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if (!cap1.begin(0x5C)) {
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Serial.println("MPR121 B not found, check wiring?");
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while (1);
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} Serial.println("MPR121 B found!");
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//cap0.setThreshholds(20, 6);
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//cap1.setThreshholds(20, 6);
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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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} // 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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ws2812fx.service();
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sendCapacitive(cap0, 0); // from the 121
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sendCapacitive(cap1, 1); // from the 121
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}
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// FUNCTIONS /////////////////////////////////////////////
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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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ws2812fx.setPixelColor(0, ws2812fx.Color(0,3,222));
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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(Adafruit_MPR121 sensorboard, int index){
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// Get the currently touched pads
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currtouched[index] = sensorboard.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[index] & _BV(i)) && !(lasttouched[index] & _BV(i)) ) {
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Serial.print(i); Serial.println(" touched");
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ws2812fx.setSegment(0, i, i, FX_MODE_STATIC, 0xFFFFFF, 700, false); // segment 0 is leds 0 - 9
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//ledState = !ledState;
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OSCMessage msg("/touch");
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msg.add(WiFi.macAddress().c_str()); // mac address of sender esp32
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msg.add((int32_t)i); // send which sensor (0 - 11) was touched
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msg.add((int32_t)1); // 1 is for touched - below 0 is for release
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msg.add((int32_t)index); // which sensor board was touched (0 - 1)
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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[index] & _BV(i)) && (lasttouched[index] & _BV(i)) ) {
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Serial.print(i); Serial.println(" released");
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//ws2812fx.setSegment(0, i, i, FX_MODE_STATIC, BLACK, 800, false); // segment 0 is leds 0 - 9
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//ws2812fx.setSegment(1, 0, 11, FX_MODE_BREATH, 0xFF0000, 500, false); // segment 0 is leds 0 - 9
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OSCMessage msg("/touch");
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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)0); //
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msg.add((int32_t)index); // index of sensor board
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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[index] = currtouched[index];
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// put a delay so it isn't overwhelming
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delay(5);
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} //////////////////
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