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Questo post e' il gemello del precedente utlizzando pero' ADXL345
Il codice e' stato completamente ripreso da questo post
Ho rimosso un po' di linee per rendere il codice piu' leggibile
In pratica se viene generato un interrupt di Inactivity l'arduino va in sleep. L'ADXL345 e' settato alla massima sensibilita' con una soglia di 75 ed un tempo prima di considerarsi inattivo di 3 secondi
#include <SparkFun_ADXL345.h> // SparkFun ADXL345 Library
#include <LowPower.h>
ADXL345 adxl = ADXL345(); // USE FOR I2C COMMUNICATION
int interruptPin = 2; // Setup pin 2 to be the interrupt pin (for most Arduino Boards)
const int wakeUpPin = 2; //For good accelaration return values I comment out this
void wakeUp()
{
}
void setup(){
Serial.begin(9600); // Start the serial terminal
Serial.flush();
adxl.powerOn(); // Power on the ADXL345
adxl.setRangeSetting(2); // Give the range settings
// Accepted values are 2g, 4g, 8g or 16g
// Higher Values = Wider Measurement Range
// Lower Values = Greater Sensitivity
adxl.setSpiBit(0); // Configure the device to be in 4 wire SPI mode when set to '0' or 3 wire SPI mode when set to 1
// Default: Set to 1
// SPI pins on the ATMega328: 11, 12 and 13 as reference in SPI Library
adxl.setActivityXYZ(1, 1, 1); // Set to activate movement detection in the axes "adxl.setActivityXYZ(X, Y, Z);" (1 == ON, 0 == OFF)
adxl.setActivityThreshold(75); // 62.5mg per increment // Set activity // Inactivity thresholds (0-255)
adxl.setInactivityXYZ(1, 1, 1); // Set to detect inactivity in all the axes "adxl.setInactivityXYZ(X, Y, Z);" (1 == ON, 0 == OFF)
adxl.setInactivityThreshold(75); // 62.5mg per increment // Set inactivity // Inactivity thresholds (0-255)
adxl.setTimeInactivity(3); // How many seconds of no activity is inactive?
adxl.setTapDetectionOnXYZ(0, 0, 1); // Detect taps in the directions turned ON "adxl.setTapDetectionOnX(X, Y, Z);" (1 == ON, 0 == OFF)
// Set values for what is considered a TAP and what is a DOUBLE TAP (0-255)
adxl.setTapThreshold(50); // 62.5 mg per increment
adxl.setTapDuration(15); // 625 μs per increment
adxl.setDoubleTapLatency(80); // 1.25 ms per increment
adxl.setDoubleTapWindow(200); // 1.25 ms per increment
// Set values for what is considered FREE FALL (0-255)
adxl.setFreeFallThreshold(7); // (5 - 9) recommended - 62.5mg per increment
adxl.setFreeFallDuration(30); // (20 - 70) recommended - 5ms per increment
// Setting all interupts to take place on INT1 pin
adxl.setImportantInterruptMapping(1, 1, 1, 1, 1); // Sets "adxl.setEveryInterruptMapping(single tap, double tap, free fall, activity, inactivity);"
// Accepts only 1 or 2 values for pins INT1 and INT2. This chooses the pin on the ADXL345 to use for Interrupts.
// This library may have a problem using INT2 pin. Default to INT1 pin.
// Turn on Interrupts for each mode (1 == ON, 0 == OFF)
adxl.InactivityINT(1);
adxl.ActivityINT(1);
adxl.FreeFallINT(1);
adxl.doubleTapINT(1);
adxl.singleTapINT(1);
attachInterrupt(digitalPinToInterrupt(interruptPin), ADXL_ISR, RISING); // Attach Interrupt
pinMode(wakeUpPin, INPUT);
}
void loop(){
attachInterrupt(0, wakeUp, RISING);
int x,y,z;
adxl.readAccel(&x, &y, &z);
Serial.print(x);
Serial.print(", ");
Serial.print(y);
Serial.print(", ");
Serial.println(z);
ADXL_ISR();
}
void ADXL_ISR() {
byte interrupts = adxl.getInterruptSource();
// Free Fall Detection
if(adxl.triggered(interrupts, ADXL345_FREE_FALL)){
Serial.println("*** FREE FALL ***");
//add code here to do when free fall is sensed
}
// Inactivity
if(adxl.triggered(interrupts, ADXL345_INACTIVITY)){
Serial.flush();
adxl.InactivityINT(0);
LowPower.powerDown(SLEEP_FOREVER, ADC_OFF, BOD_OFF);
}
// Activity
if(adxl.triggered(interrupts, ADXL345_ACTIVITY)){
Serial.println("*** ACTIVITY ***");
adxl.InactivityINT(1);
//add code here to do when activity is sensed
}
// Double Tap Detection
if(adxl.triggered(interrupts, ADXL345_DOUBLE_TAP)){
Serial.println("*** DOUBLE TAP ***");
adxl.InactivityINT(1);
//add code here to do when a 2X tap is sensed
}
// Tap Detection
if(adxl.triggered(interrupts, ADXL345_SINGLE_TAP)){
Serial.println("*** TAP ***");
adxl.InactivityINT(1);
}
}
void blink() {
}
