playing around with an led and a Tautic accelerometer board.

Shakeonshakeoff not-debounced

// Shake switched led by addidis 
// HW : Tautic accelerometer board +4.7k pull ups, uno32, led +330 resistor to led pin
// Accelerometer connections : SDA - A4 , SCL - A5, INT - 7, gnd - gnd,  vdd - 3.3v 4.7k pull ups on SDA SCL 
// LED connections: pin 6 to led, to 330 ohm to ground . 
//notes - not debounced so it flickers. Really, just playing around with the features of the accelerometer. 



#include <Wire.h>

int accelintpin = 7;
int ledpin = 6;
volatile int state = 0;

void setup()
{
 pinMode(ledpin, OUTPUT);
 digitalWrite(ledpin, LOW);
 pinMode(accelintpin, INPUT);
 attachInterrupt(2,accelISR, FALLING);
 Serial.begin(38400); // start serial for output
 Wire.begin();
}

void accelISR(void)
{
  if (state== 0){
  digitalWrite(ledpin, HIGH);
  state=1;
  }
  else {
  digitalWrite(ledpin, LOW);
  state=0;
  }
}
void loop()
{
  digitalWrite(ledpin, LOW);
 delay(10);

 Wire.beginTransmission(0x4C); //Set MMA7660FCR1 to active mode
 Wire.send(0x06);
  Wire.send(0xE0);
 Wire.send(0x01);
 Wire.endTransmission();
 delay(100);
 
char x,y,z,tilt,sample,mode,fac;
while(1)
 {
   
 unsigned char val;
 Wire.beginTransmission(0x4C);
 Wire.send(0x00); // register to read
 Wire.endTransmission();
  
 Wire.requestFrom(0x4C, 11); // read a byte
 while(!Wire.available()) { } // wait for data
 x = Wire.receive();
 y = Wire.receive();
 z = Wire.receive();
 tilt = Wire.receive();
 sample = Wire.receive();
 Wire.receive(); //throw away byte
 Wire.receive(); //throw away byte
 mode = Wire.receive();
 Wire.receive(); //throw away byte
 Wire.receive(); //throw away byte
 Wire.receive(); //throw away byte
 fac = Wire.receive();

 Serial.print("X=");
 Serial.print(x, DEC);
 Serial.print(", Y=");
 Serial.print(y, DEC);
 Serial.print(", Z=");
 Serial.print(z, DEC);
 Serial.print(", Mode=");
 Serial.print(mode,DEC);
 Serial.print(", Tilt=");
 Serial.print(tilt,DEC);
 Serial.print(", sample=");
 Serial.print(sample,DEC);
 Serial.print(", fac=");
 Serial.print(fac,DEC);
 Serial.println(".");

 delay(100);
 }
}

void wrReg(unsigned char reg, unsigned char val)
{
 Wire.beginTransmission(0x4C);
 Wire.send(reg);
 Wire.send(val);
 Wire.endTransmission();
}

unsigned char rdReg(unsigned char reg)
{
 unsigned char val;
 Wire.beginTransmission(0x4C);
 Wire.send(reg); // register to read
 Wire.endTransmission();
 
 digitalWrite(A4, HIGH);
 delay(5);
 digitalWrite(A4, LOW);
 delay(5);
 
 Wire.requestFrom(0x4C, 1); // read a byte
 while(!Wire.available()) { } // wait for data
 return Wire.receive();
}