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Fixed issue with closing non-open FTDevices #4

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Fixed issue with closing non-open FTDevices #4

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db99a64
Update FTDevice.java
plinnie Feb 22, 2017
44429b7
Fixed issue with closing non-open FTDevices
plinnie Feb 22, 2017
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9 changes: 7 additions & 2 deletions src/com/ftdi/FTDevice.java
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ public class FTDevice {
private final String devSerialNumber, devDescription;
private FTDeviceInputStream fTDeviceInputStream = null;
private FTDeviceOutputStream fTDeviceOutputStream = null;
private boolean open = false;

private FTDevice(DeviceType devType, int devID, int devLocationID,
String devSerialNumber, String devDescription, int ftHandle,
Expand All @@ -59,6 +60,7 @@ private FTDevice(DeviceType devType, int devID, int devLocationID,
this.devDescription = devDescription;
this.ftHandle = ftHandle;
this.flag = flag;
this.open = false;
}

/**
Expand Down Expand Up @@ -304,13 +306,16 @@ public void open() throws FTD2XXException {
ensureFTStatus(ftd2xx.FT_OpenEx(memory, FTD2XX.FT_OPEN_BY_SERIAL_NUMBER,
handle));
this.ftHandle = handle.getValue();
open = true;
}

/**
* Close connection with device.
* @throws FTD2XXException If something goes wrong.
*/
public void close() throws FTD2XXException {
if (!open) return;
open = false;
ensureFTStatus(ftd2xx.FT_Close(ftHandle));
}

Expand Down Expand Up @@ -451,14 +456,14 @@ public void resetDevice() throws FTD2XXException {
/**
* Set the latency timer value.
* @param timer Latency timer value in milliseconds.
* Valid range is 2 – 255.
* Valid range is 2 - 255.
* @throws FTD2XXException If something goes wrong.
* @throws IllegalArgumentException If timer was not in range 2 - 255.
*/
public void setLatencyTimer(short timer) throws FTD2XXException,
IllegalArgumentException {
if (!((timer > 2) && (timer < 255))) {
throw new IllegalArgumentException("Valid range is 2 – 255!");
throw new IllegalArgumentException("Valid range is 2 - 255!");
}
ensureFTStatus(ftd2xx.FT_SetLatencyTimer(ftHandle, (byte) timer));
}
Expand Down