void Cfilterbegin(){
//Turning on the accelerometer
Accel.init(ADXL345_ADDR_ALT_LOW);
Accel.set_bw(ADXL345_BW_12);
gyro.reset();
// Use ITG3200_ADDR_AD0_HIGH or ITG3200_ADDR_AD0_LOW as the ITG3200 address
// depending on how AD0 is connected on your breakout board, check its schematics for details
gyro.init(ITG3200_ADDR_AD0_LOW);
Serial.print("zeroCalibrating...");
gyro.zeroCalibrate(2500,2);
Serial.println("done.");
alpha = float(TIME_CONSTANT) / (float(TIME_CONSTANT) + float(SAMPLE_RATE)); // calculate the scaling coefficent
Serial.print("Scaling Coefficent: ");
Serial.println(alpha);
delay(100);
}
int main(int argc, char **argv)
{
const char *fileName = "/dev/i2c-1";
int countdown = 0;
int blink = 1;
float timeStep = 83.33;
int printTerminal = 1;
int fd;// File description
string buttonInput;
float lastBlink = 0.0f;
bool isOnLED = false;
float timeStamp = 0.0f;
int delay = 0;
CTimeClass timer;
Logger logger;
ADXL345 acc;
BMP085 baro;
L3G4200D gyro;
HMC5883L compass;
GPIOClass gpioLED("17");
GPIOClass gpioButton("4");
// init GPIOs
gpioLED.export_gpio();
gpioButton.export_gpio();
gpioLED.setdir_gpio("out"); //GPIO4 set to output
gpioButton.setdir_gpio("in"); // GPIO17 set to input
// switch off LED just in case
gpioLED.setval_gpio("0");
// parse input arguments
if( argc > 1 ) {
parseArgv( countdown, blink, timeStep, printTerminal, argc, argv );
printf("c = %d, b = %d, t = %f, p = %d\n", countdown, blink, timeStep, printTerminal);
}
// init i2c
if(!init(&fd, fileName)) {
exit(1);
}
// wait for a little
usleep(100000);
// init imu
acc.init(&fd, ((int) ((1000/timeStep)+0.5)), timeStep);
baro.init(&fd);
compass.init(&fd);
gyro.init(&fd, ((int) ((1000/timeStep)+0.5)));
if( countdown > 0 ) {
waitUntilButton(gpioButton, gpioLED, countdown, blink );
}
timer.init();
if( logger.openLogFile( timeStep, timer ) == false ) {
exit( 1 );
}
printf("GO\n");
for(;;) {
// read current Time
timer.computeStartTime();
getIMUReadings( acc, baro, compass, gyro );
timer.computeTime( timeStamp );
// print data to file MATLAB: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
fprintf(logger.fp, "%d, %4d %4d %4d %.2f %.2f %.2f %.2f %5.3f %5.3f %5.3f %5.3f %5.3f %d %d %d %5.3f %5.3f %5.3f %5.3f %5.3f\n", ((int) timeStamp), gyro.x, gyro.y, gyro.z, compass.heading, baro.altitude, baro.pressure / 100, baro.temperature, acc.accKalman[ X ], acc.accKalman[ Y ], acc.accKalman[ Z ], acc.acc[ Z ], acc.magnitude, acc.zeroX[X], acc.zeroX[Y], acc.zeroX[Z], acc.pitch, acc.roll, acc.deriv2[X], acc.deriv2[Y], acc.deriv2[Z]);
//fprintf(logger.fp, "%d %5d %5d %5d %5.3f %5.3f %5.3f %5.3f %5.3f %5.3f\n", ((int) timeStamp), acc.raw[0], acc.raw[1], acc.raw[2], acc.acc[ 0 ], acc.acc[ 1 ], acc.acc[ 2 ], acc.accKalman[ 0 ], acc.accKalman[ 1 ], acc.accKalman[ 2 ]); //, acc.movingAverage[ 0 ], acc.movingAverage[ 1 ],acc.movingAverage[ 2 ]);
if( printTerminal == 1 ) {
printf("%d, %4d %4d %4d %.2f %.2f %.2f %.2f %5.3f %5.3f %5.3f %5.3f %5.3f %d %d %d %5.3f %5.3f\n", ((int) timeStamp), gyro.x, gyro.y, gyro.z, compass.heading, baro.altitude, baro.pressure / 100, baro.temperature, acc.accKalman[ X ], acc.accKalman[ Y ], acc.accKalman[ Z ], acc.acc[ Z ], acc.magnitude,acc.zeroX[X], acc.zeroX[Y], acc.zeroX[Z], acc.pitch, acc.roll);
}
// see if user wants to quit
gpioButton.getval_gpio(buttonInput);
// button pressed, so exit program
if( buttonInput == "0" ) {
printf("Exiting\n");
break;
}
timer.computeEndTime();
// delay in microseconds
delay = ( timeStep * 1000 ) - timer.getElapsedMilliseconds() * 1000;
// sleep by 'delay' in order to have periodic readings
if( delay > 0 ) {
usleep(delay);
}
// sleep 1ms
else {
usleep(1000);
}
// if blink is set to ON
if( blink == 1 ){
static float endTime;
endTime = timer.getEndTime();
blinkLED( gpioLED, endTime, lastBlink, isOnLED, 888 );
}
}
gpioLED.setval_gpio("0");
printf("bye bye\n");
return 0;
}
