public void startApp() throws MIDletStateChangeException {
System.out.println("Starting sensor gathering");
BootloaderListenerService.getInstance()
.start(); // monitor the USB (if connected) and recognize commands from host
long ourAddr = RadioFactory.getRadioPolicyManager().getIEEEAddress();
System.out.println("Our radio address = " + IEEEAddress.toDottedHex(ourAddr));
IAnalogInput sensor = EDemoBoard.getInstance().getAnalogInputs()[EDemoBoard.A4];
DatagramConnection dgConnection = null;
Datagram dg = null;
try {
// specify broadcast_port
dgConnection = (DatagramConnection) Connector.open("radiogram://broadcast:" + BROADCAST_PORT);
dg = dgConnection.newDatagram(50);
System.out.println("Maxlength for Packet is : " + dgConnection.getMaximumLength());
} catch (IOException ex) {
System.out.println("Could not open radiogram broadcast connection");
ex.printStackTrace();
return;
}
int counter = 0;
while (true) {
try {
// 9.8mV per inch
double val = sensor.getVoltage();
voltages[counter] = val;
double sum = 0;
for (int i = 0; i < voltages.length; i++) {
sum += voltages[i];
}
System.out.println("Voltage average: " + sum / voltages.length);
counter++;
if (counter > 9) {
counter = 0;
}
// System.out.println("Value in volts: "+ val);
// double inches = val/0.0098;
// System.out.println("Value in inches: "+ inches);
// Write the string into the dataGram.
// dg.reset();
// dg.writeLong(ourAddr);
// dg.writeDouble(val);
// Send DataGram
// dgConnection.send(dg);
// Sleep for 200 milliseconds.
Utils.sleep(50);
} catch (IOException ex) {
System.err.println("Caught " + ex + " while collecting/sending sensor sample.");
ex.printStackTrace();
}
}
}
public double getVoltage() {
try {
return gyro.getVoltage();
} catch (IOException ex) {
ex.printStackTrace();
}
return 0;
}
public double getRateOfChange() {
try {
voltage = gyro.getVoltage();
// System.out.println("Gyro V is " + voltage );
} catch (IOException ex) {
ex.printStackTrace();
}
return ((voltage - offset) * V_TO_MV) / scalingFactor;
// System.out.println("voltage = " + voltage);
// double offsetVoltage = voltage-offset;
// System.out.println("offsetVoltage = " + offsetVoltage);
// double voltageInMillivolts = offsetVoltage*1000.0;
// System.out.println("voltageInMillivolts =" + voltageInMillivolts);
// double rateOfChange = voltageInMillivolts/scalingFactor;
// System.out.println("rateOfChange = " + rateOfChange);
// return rateOfChange;
}