JackRichards
JackRichards
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3 years ago
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/** IGME470 Snake Arduino */ /********************************************************* This is a library for the MPR121 12-channel Capacitive touch sensor Designed specifically to work with the MPR121 Breakout in the Adafruit shop ----> https://www.adafruit.com/products/ These sensors use I2C communicate, at least 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution **********************************************************/ #include <Wire.h> #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 cap = Adafruit_MPR121(); // Keeps track of the last pins touched // so we know when buttons are 'released' uint16_t lasttouched = 0; uint16_t currtouched = 0; void setup() { Serial.begin(9600); while (!Serial) { // needed to keep leonardo/micro from starting too fast! delay(10); } //Serial.println("Adafruit MPR121 Capacitive Touch sensor test"); // Default address is 0x5A, if tied to 3.3V its 0x5B // If tied to SDA its 0x5C and if SCL then 0x5D if (!cap.begin(0x5A)) { Serial.println("MPR121 not found, check wiring?"); while (1); } //Serial.println("MPR121 found!"); } void loop() { // Get the currently touched pads currtouched = cap.touched(); if (cap.touched() == 4 || cap.touched() == 256) { Serial.println("1"); } else if (cap.touched() == 260) { Serial.println("0"); } else Serial.println("2"); delay(100); // for (uint8_t i=0; i<12; i++) { // // it if *is* touched and *wasnt* touched before, alert! // if ((currtouched & _BV(i)) && !(lasttouched & _BV(i)) ) { // Serial.print(i); Serial.println(" touched"); // } // // if it *was* touched and now *isnt*, alert! // if (!(currtouched & _BV(i)) && (lasttouched & _BV(i)) ) { // Serial.print(i); Serial.println(" released"); // } // } // reset our state lasttouched = currtouched; // comment out this line for detailed data from the sensor! return; // debugging info, what Serial.print("\t\t\t\t\t\t\t\t\t\t\t\t\t 0x"); Serial.println(cap.touched(), HEX); Serial.print("Filt: "); for (uint8_t i=0; i<12; i++) { Serial.print(cap.filteredData(i)); Serial.print("\t"); } Serial.println(); Serial.print("Base: "); for (uint8_t i=0; i<12; i++) { Serial.print(cap.baselineData(i)); Serial.print("\t"); } Serial.println(); // put a delay so it isn't overwhelming delay(100); }
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