private void getRidOfResidueData()
throws FTDWrapperNotOpenException, FTDWrapperProcessNullException,
FTDWrapperBadQueueStatusException, FTDWrapperBadReadStatusException {
/* Get rid of residue data*/
byte[] data;
int residueData = ft_device.getQueueStatus();
// Logger.log("Residue = %d", residueData);
while (residueData > 0) {
data = new byte[residueData];
ft_device.read(data);
residueData = ft_device.getQueueStatus();
}
}
public String send(String command, boolean expectAnswer, long timeout)
throws FTDWrapperException {
ft_device.write(command.getBytes());
// Logger.log("%s sent", command);
// ft_device.write("W".getBytes(StandardCharsets.US_ASCII));
if (!expectAnswer) return null;
if (timeout > 0) {
/* Try to wait for timeout. Continue silently if unsuccessful. */
try {
Thread.sleep(timeout);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// TODO: Change to StringBuilder
String out = new String("");
while (true) {
int expectedDataSize = ft_device.getQueueStatus();
// Logger.log("Expected = %d", expectedDataSize);
if (expectedDataSize > 0) {
byte[] receivedData = new byte[expectedDataSize];
// Logger.log("Expected = %d", expectedDataSize);
int readSize = ft_device.read(receivedData);
if (readSize < expectedDataSize)
throw new FTDWrapperException(
"Could not read all data. Expected "
+ Integer.toString(expectedDataSize)
+ " bytes, read "
+ Integer.toString(readSize)
+ " bytes.");
out += new String(receivedData);
} else break;
/*throw new IOException("Could not read any data. Waited for " + Long.getCSVString(timeout) +
" but received no data. Check the connection or increase readWait.");
*/
}
// Logger.log("recv = %s", out);
return out;
}
public SerialPortCommunicator(Context context)
throws D2xxManager.D2xxException, FTDWrapperBadReadStatusException,
FTDWrapperProcessNullException, FTDWrapperBadQueueStatusException,
FTDWrapperNotOpenException {
// Logger.log("Opening serial port");
D2xxManager ftD2xx;
ftD2xx = D2xxManager.getInstance(context);
if (ftD2xx.createDeviceInfoList(context) > 0) {
ft_device = new FTDeviceWrapper(ftD2xx.openByIndex(context, 0));
/*if (ft_device.getFt_device().isOpen())
Logger.log("Serial port opened!");
else
Logger.log("Serial port not opened!");*/
} else
throw new D2xxManager.D2xxException(
"Cannot open the device. Make sure the hardware is connected and turned on.");
/*
Set the following settings
baudRate = 9600;
stopBit = 1;
dataBit = 8;
parity = 0;
flowControl = 0;
*/
ft_device.setBitMode((byte) 0, D2xxManager.FT_BITMODE_RESET);
ft_device.setBaudRate(BAUDRATE);
ft_device.setDataCharacteristics(
D2xxManager.FT_DATA_BITS_8, D2xxManager.FT_STOP_BITS_1, D2xxManager.FT_PARITY_NONE);
ft_device.setFlowControl(D2xxManager.FT_FLOW_NONE, XON, XOFF);
/* ft_device is set and ready */
// Logger.log("ft_device is set and ready");
getRidOfResidueData();
}