/// <summary>
/// try to retreive an endpoint with the device
/// Is seems that usb-serial-for-android does this job
/// </summary>
/// <param name="connection"> The created connection</param>
/// <param name="epIn"> Endpoint found for the interface for device to host transmission </param>
/// <param name="epOut"> Endpoint found for the interface for host to device transmission </param>
/// <returns> operation result </returns>
protected int OpenInterface(UsbDevice usbdev, UsbDeviceConnection connection, ref UsbInterface usbIface, ref UsbEndpoint epIn, ref UsbEndpoint epOut)
{
int ret = -1;
int i;
// Search and claim the first interface available
for (i = 0; i < usbdev.InterfaceCount; i++)
{
usbIface = usbdev.GetInterface(i);
if (connection.ClaimInterface(usbIface, true))
{
// Now search IO endpoints
if (InterfaceGetBulkEndpoints(usbIface, ref epIn, ref epOut) == 0)
{
connection.SetInterface(usbIface);
return(0);
}
else
{
connection.ReleaseInterface(usbIface);
}
}
}
return(ret);
}
public void onDestroy()
{
if (mConnection != null)
{
mConnection.ReleaseInterface(mIntf);
mConnection.Close();
}
}
/// <summary>
///
/// </summary>
public override void Close()
{
// Forcibly close the read thread.
if (m_ReadThread != null)
{
m_ReadThread.Abort(); m_ReadThread = null;
}
if (m_IsOpen)
{
//
m_UsbConnection.ReleaseInterface(m_UsbIntf);
m_UsbConnection.Close();
// Clean up
UsbManager.main.onUsbDeviceAttached -= OnUsbDeviceAttached;
UsbManager.main.onUsbDeviceDetached -= OnUsbDeviceDetached;
AndroidPtr.Free(ref m_UsbDevice);
AndroidPtr.Free(ref m_UsbIntf);
AndroidPtr.Free(ref m_UsbConnection);
AndroidPtr.Free(ref m_UsbReqIn);
//
m_IsOpen = false;
}
}
public override void Open(UsbDeviceConnection connection)
{
if (mConnection != null)
{
throw new IOException("Already open");
}
UsbInterface usbInterface = mDevice.GetInterface(0);
if (!connection.ClaimInterface(usbInterface, true))
{
throw new IOException("Error claiming Prolific interface 0");
}
mConnection = connection;
Boolean opened = false;
try
{
for (int i = 0; i < usbInterface.EndpointCount; ++i)
{
UsbEndpoint currentEndpoint = usbInterface.GetEndpoint(i);
switch (currentEndpoint.Address)
{
case (UsbAddressing)READ_ENDPOINT:
mReadEndpoint = currentEndpoint;
break;
case (UsbAddressing)WRITE_ENDPOINT:
mWriteEndpoint = currentEndpoint;
break;
case (UsbAddressing)INTERRUPT_ENDPOINT:
mInterruptEndpoint = currentEndpoint;
break;
}
}
if (mDevice.DeviceClass == (UsbClass)0x02)
{
mDeviceType = DEVICE_TYPE_0;
}
else
{
try
{
//Method getRawDescriptorsMethod
// = mConnection.getClass().getMethod("getRawDescriptors");
//byte[] rawDescriptors
// = (byte[])getRawDescriptorsMethod.invoke(mConnection);
byte[] rawDescriptors = mConnection.GetRawDescriptors();
byte maxPacketSize0 = rawDescriptors[7];
if (maxPacketSize0 == 64)
{
mDeviceType = DEVICE_TYPE_HX;
}
else if ((mDevice.DeviceClass == 0x00) ||
(mDevice.DeviceClass == (UsbClass)0xff))
{
mDeviceType = DEVICE_TYPE_1;
}
else
{
Log.Warn(TAG, "Could not detect PL2303 subtype, "
+ "Assuming that it is a HX device");
mDeviceType = DEVICE_TYPE_HX;
}
}
catch (NoSuchMethodException e)
{
Log.Warn(TAG, "Method UsbDeviceConnection.getRawDescriptors, "
+ "required for PL2303 subtype detection, not "
+ "available! Assuming that it is a HX device");
mDeviceType = DEVICE_TYPE_HX;
}
catch (Exception e)
{
Log.Error(TAG, "An unexpected exception occured while trying "
+ "to detect PL2303 subtype", e);
}
}
SetControlLines(mControlLinesValue);
ResetDevice();
DoBlackMagic();
opened = true;
}
finally
{
if (!opened)
{
mConnection = null;
connection.ReleaseInterface(usbInterface);
}
}
}
public void Dispose()
{
_interruptListenerThread?.Abort();
_connection?.ReleaseInterface(_interface);
_connection?.Close();
}
public override void Open(UsbDeviceConnection connection)
{
if (_connection != null)
{
throw new UsbSerialException("Already open");
}
UsbInterface usbInterface = _driver.Device.GetInterface(0);
if (!connection.ClaimInterface(usbInterface, true))
{
throw new UsbSerialException("Error claiming Prolific interface 0");
}
_connection = connection;
bool opened = false;
try
{
for (int i = 0; i < usbInterface.EndpointCount; ++i)
{
UsbEndpoint currentEndpoint = usbInterface.GetEndpoint(i);
if (currentEndpoint.Address.IsEqualTo(READ_ENDPOINT))
{
_readEndpoint = currentEndpoint;
}
else if (currentEndpoint.Address.IsEqualTo(WRITE_ENDPOINT))
{
_writeEndpoint = currentEndpoint;
}
else if (currentEndpoint.Address.IsEqualTo(INTERRUPT_ENDPOINT))
{
_interruptEndpoint = currentEndpoint;
}
}
if ((int)_driver.Device.DeviceClass == 0x02)
{
_deviceType = DEVICE_TYPE_0;
}
else
{
try
{
byte[] rawDescriptors = _connection.GetRawDescriptors();
byte maxPacketSize0 = rawDescriptors[7];
if (maxPacketSize0 == 64)
{
_deviceType = DEVICE_TYPE_HX;
}
else if ((_driver.Device.DeviceClass == 0x00) || ((int)_driver.Device.DeviceClass == 0xff))
{
_deviceType = DEVICE_TYPE_1;
}
else
{
Log.Warn(nameof(ProlificSerialDriver), "Could not detect PL2303 subtype, " + "Assuming that it is a HX device");
_deviceType = DEVICE_TYPE_HX;
}
}
catch (NoSuchMethodException)
{
Log.Warn(nameof(ProlificSerialDriver), "Method UsbDeviceConnection.getRawDescriptors, " + "required for PL2303 subtype detection, not " + "available! Assuming that it is a HX device");
_deviceType = DEVICE_TYPE_HX;
}
catch (Exception e)
{
Log.Warn(nameof(ProlificSerialDriver), "An unexpected exception occured while trying " + "to detect PL2303 subtype", e);
}
}
ControlLines = _controlLinesValue;
ResetDevice();
PerformInitializationSequence();
opened = true;
}
finally
{
if (!opened)
{
_connection = null;
connection.ReleaseInterface(usbInterface);
}
}
}
public override void Open(UsbDeviceConnection connection)
{
if (Connection != null)
{
throw new IOException("Already open");
}
Connection = connection;
UsbInterface usbInterface = Device.GetInterface(0);
if (!connection.ClaimInterface(usbInterface, true))
{
throw new IOException("Error claiming Prolific interface 0");
}
var opened = false;
try
{
for (int i = 0; i < usbInterface.EndpointCount; ++i)
{
UsbEndpoint currentEndpoint = usbInterface.GetEndpoint(i);
switch (currentEndpoint.Address)
{
case READ_ENDPOINT:
mReadEndpoint = currentEndpoint;
break;
case WRITE_ENDPOINT:
mWriteEndpoint = currentEndpoint;
break;
case INTERRUPT_ENDPOINT:
mInterruptEndpoint = currentEndpoint;
break;
}
}
if (Device.DeviceClass == (UsbClass)0x02)
{
mDeviceType = DEVICE_TYPE_0;
}
else
{
if ((Device.DeviceClass == 0x00) ||
(Device.DeviceClass == (UsbClass)0xff))
{
mDeviceType = DEVICE_TYPE_1;
}
else
{
mDeviceType = DEVICE_TYPE_HX;
}
}
SetControlLines(mControlLinesValue);
DoBlackMagic();
ResetDevice();
opened = true;
}
finally
{
if (!opened)
{
Connection = null;
connection.ReleaseInterface(usbInterface);
}
}
}