overte/hardware/head_hand/head_hand.pde

/*
Read a set of analog input lines and echo their readings over the serial port with averaging 
*/

//  ADC PIN MAPPINGS 
//
//  0, 1 =   Head Pitch, Yaw gyro 
//  2,3,4    =  Head Accelerometer
//  10,11,12 = Hand Accelerometer

#define NUM_CHANNELS 8
#define AVERAGE_COUNT 100
#define TOGGLE_LED_SAMPLES 1000

int inputPins[NUM_CHANNELS] = {0,1,2,3,4,10,11,12};


int measured[NUM_CHANNELS];
float accumulate[NUM_CHANNELS];

int sampleCount = 0;

void setup()
{
  int i;
  for (i = 0; i < NUM_CHANNELS; i++) {
    pinMode(inputPins[i], INPUT_ANALOG);
    measured[i] = analogRead(inputPins[i]);
    accumulate[i] = measured[i];
  }
  pinMode(BOARD_LED_PIN, OUTPUT);
}

void loop()
{
  int i;
  sampleCount++; 
  for (i = 0; i < NUM_CHANNELS; i++) {
    if (sampleCount % AVERAGE_COUNT == 0) {
      measured[i] = accumulate[i] / AVERAGE_COUNT;
      SerialUSB.print(measured[i]);
      SerialUSB.print(" ");
      accumulate[i] = 0;
    } else {
      accumulate[i] += analogRead(inputPins[i]);
    }
  }
  if (sampleCount % AVERAGE_COUNT == 0) SerialUSB.println("");
  if (sampleCount % TOGGLE_LED_SAMPLES == 0) toggleLED();
}