Notes

[Avago Sensor]

[AXL]

[Data Sheet]

[i2c info]

//I2C color sensor #define AVAGO (0×74) //Not really used, but alas, here it is for reference.
#define AVAGO_W (0xE8) //write
#define AVAGO_R (0xE9) //read

//I2C 3 axis accelerometer
#define AXL_W (0×3A) //write
#define AXL_R (0×3B) //read
#include “/TWI_hack.c”


	
inline int i2c_setRegister(int address, int value);

void axl_init();

int axl_read_x();

	
void setup()

{
  Serial.begin(9600);
  i2c_init(); 
  axl_init();

}

	
void loop()

{
  Serial.println(axl_read_x());
  delay(100); 

}

	
void axl_init()

{
  i2c_start(AXL_W); // set device address and write mode
  i2c_setRegister(0×20,0×47); //address,value
  i2c_stop(); 

}

	
int axl_read_x()

{
  int x=-1;
  i2c_start(AXL_W); // set device address and write mode
  i2c_write(0×29); //X out
  i2c_rep_start(AXL_R); //send another start
  x =i2c_readNak(); //Read one byte, and then send the no-ACK to signal done
  i2c_stop(); 
  if(x>127)
    x= (255-x)*-1; 
  //x+=255;
  return x;

}

	
inline int i2c_setRegister(int address, int value)

{    
  i2c_write(address);  //address (this one isn’t error checked for ACK)
  return i2c_write(value); //value 

}