Datasheet

// Turn off multitouch so only one button pressed at a time

cap.writeRegister(0x2A, 0x80); // 0x2A default 0x80 use 0x41 — Set multiple touches back to off

cap.writeRegister(0x41, 0x39); // 0x41 default 0x39 use 0x41 — Set "speed up" setting back to off

cap.writeRegister(0x72, 0x00); // 0x72 default 0x00 — Sets LED links back to off (default)

cap.writeRegister(0x44, 0x41); // 0x44 default 0x40 use 0x41 — Set interrupt on press but not release

cap.writeRegister(0x28, 0x00); // 0x28 default 0xFF use 0x00 — Turn off interrupt repeat on button hold

EIFR = 1; // clear flag for interrupt 1

attachInterrupt(1, routine_Interrupt_CAP1188, FALLING);

}

void loop() {

// Serial.println(digitalRead(3));

uint8_t touched = cap.touched();

if (touched == 0) {

// No touch detected

// return;

}

for (uint8_t i=0; i<8; i++) {

if (touched & (1 << i)) {

Serial.print("C"); Serial.print(i+1); Serial.print("\t");

}

Serial.println();

delay(50);

Serial.print("Interrupt: "); Serial.println(interrupt);

}

void routine_Interrupt_CAP1188() {

++interrupt;

}