tapdemo.ino

// Basic demo for tap/doubletap readings from Adafruit LIS3DH

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_LIS3DH.h>
#include <Adafruit_Sensor.h>

// Used for software SPI
#define LIS3DH_CLK 13
#define LIS3DH_MISO 12
#define LIS3DH_MOSI 11
// Used for hardware & software SPI
#define LIS3DH_CS 10

// software SPI
//Adafruit_LIS3DH lis = Adafruit_LIS3DH(LIS3DH_CS, LIS3DH_MOSI, LIS3DH_MISO, LIS3DH_CLK);
// hardware SPI
//Adafruit_LIS3DH lis = Adafruit_LIS3DH(LIS3DH_CS);
// I2C
Adafruit_LIS3DH lis = Adafruit_LIS3DH();

#if defined(ARDUINO_ARCH_SAMD)
// for Zero, output on USB Serial console, remove line below if using programming port to program the Zero!
//   #define Serial SerialUSB
#endif

// Adjust this number for the sensitivity of the 'click' force
// this strongly depend on the range! for 16G, try 5-10
// for 8G, try 10-20. for 4G try 20-40. for 2G try 40-80
#define CLICKTHRESHHOLD 40

void setup(void) {
#ifndef ESP8266
  while (!Serial);     // will pause Zero, Leonardo, etc until serial console opens
#endif

  Serial.begin(9600);
    Serial.println("Adafruit LIS3DH Tap Test!");
  
  if (! lis.begin(0x18)) {   // change this to 0x19 for alternative i2c address
    Serial.println("Couldnt start");
    while (1);
  }
  Serial.println("LIS3DH found!");
  
  lis.setRange(LIS3DH_RANGE_4_G);   // 2, 4, 8 or 16 G!
  
  Serial.print("Range = "); Serial.print(2 << lis.getRange());  
  Serial.println("G");

  // 0 = turn off click detection & interrupt
  // 1 = single click only interrupt output
  // 2 = double click only interrupt output, detect single click
  // Adjust threshhold, higher numbers are less sensitive
  lis.setClick(2, CLICKTHRESHHOLD);
  delay(100);
}

int check = 0;

void loop() {
  /*uint8_t click = lis.getClick();
  if (click == 0) return;
  if (! (click & 0x30)) return;
  Serial.print("Click detected (0x"); Serial.print(click, HEX); Serial.print("): ");
  if (click & 0x10) Serial.print(" single click");
  if (click & 0x20) Serial.print(" double click");
  Serial.println();
  */
   while (check == 0){
        uint8_t click = lis.getClick();
        if (click == 0){} //do nothing
        else if (! (click & 0x30)) {}//Do nothing
        if (click & 0x10) Serial.println(" single click");
        if (click & 0x20){
          Serial.println(" double click || Check now 1");
          check = 1;
        }
   }
   check = 0;
   Serial.println("Check now 0");
      
   Serial.println("Next");

  delay(200);

}