@Override
protected void initEndpoints() throws IOException {
UsbInterface usbInterface = mDevice.getInterface(0);
if (!mConnection.claimInterface(usbInterface, true)) {
throw new IOException("Error claiming Prolific interface 0");
}
for (int i = 0; i < usbInterface.getEndpointCount(); ++i) {
UsbEndpoint currentEndpoint = usbInterface.getEndpoint(i);
switch (currentEndpoint.getType()) {
case UsbConstants.USB_ENDPOINT_XFER_BULK:
if (currentEndpoint.getDirection() == UsbConstants.USB_DIR_IN) {
mReadEndpoint = currentEndpoint;
} else {
mWriteEndpoint = currentEndpoint;
}
break;
case UsbConstants.USB_ENDPOINT_XFER_INT:
mControlEndpoint = currentEndpoint;
break;
}
}
}
/**
* デバイスの利用開始。
*
* @return null=正常、null以外=エラーメッセージ
*/
public String onStart(UsbDevice device) {
Log.d(TAG, "onStart:" + device);
if (!device.equals(usbDevice)) {
return "No device attach.";
}
if (!usbManager.hasPermission(usbDevice)) {
return "No device permission.";
}
usbConnection = usbManager.openDevice(usbDevice);
// TODO:インターフェースの検出は端折ってます。
UsbInterface usbIf = usbDevice.getInterface(INTERFACE_INDEX);
// EndPointの検索。分かってる場合は直接取り出しても良い。
for (int i = 0; i < usbIf.getEndpointCount(); i++) {
UsbEndpoint ep = usbIf.getEndpoint(i);
Log.d(TAG, "tye=" + ep.getType());
if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_INT) {
if (ep.getDirection() == UsbConstants.USB_DIR_IN) {
endpointIn = ep;
} else if (ep.getDirection() == UsbConstants.USB_DIR_OUT) {
endpointOut = ep;
}
}
}
if (endpointIn == null || endpointOut == null) {
Log.e(TAG, "Device has not IN/OUT Endpoint.");
return "Device has not IN/OUT Endpoint.";
}
// デバイスの確保
usbConnection.claimInterface(usbIf, true);
isReady = true;
return null;
}
@Override
public void open() throws IOException {
Log.d(TAG, "claiming interfaces, count=" + mDevice.getInterfaceCount());
Log.d(TAG, "Claiming control interface.");
mControlInterface = mDevice.getInterface(0);
Log.d(TAG, "Control iface=" + mControlInterface);
// class should be USB_CLASS_COMM
if (!mConnection.claimInterface(mControlInterface, true)) {
throw new IOException("Could not claim control interface.");
}
mControlEndpoint = mControlInterface.getEndpoint(0);
Log.d(TAG, "Control endpoint direction: " + mControlEndpoint.getDirection());
Log.d(TAG, "Claiming data interface.");
mDataInterface = mDevice.getInterface(1);
Log.d(TAG, "data iface=" + mDataInterface);
// class should be USB_CLASS_CDC_DATA
if (!mConnection.claimInterface(mDataInterface, true)) {
throw new IOException("Could not claim data interface.");
}
mReadEndpoint = mDataInterface.getEndpoint(1);
Log.d(TAG, "Read endpoint direction: " + mReadEndpoint.getDirection());
mWriteEndpoint = mDataInterface.getEndpoint(0);
Log.d(TAG, "Write endpoint direction: " + mWriteEndpoint.getDirection());
}
private void setDevice(UsbDevice device) {
mConnection = mUsbManager.openDevice(device);
intf = device.getInterface(0);
UsbEndpoint epOut = null;
UsbEndpoint epIn = null;
UsbEndpoint epEv = null;
// Looking for Bulk Endpoints
for (int i = 0; i < intf.getEndpointCount(); i++) {
UsbEndpoint ep = intf.getEndpoint(i);
if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK) {
if (ep.getDirection() == UsbConstants.USB_DIR_OUT) {
epOut = ep;
} else {
epIn = ep;
}
}
if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_INT) {
epEv = ep;
}
}
if (epOut == null || epIn == null || epEv == null) {
throw new IllegalArgumentException("not all endpoints found");
}
mEndpointBulkOut = epOut;
mEndpointBulkIn = epIn;
mEndpointIntr = epEv;
inMaxPS = mEndpointBulkIn.getMaxPacketSize();
}
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
final UsbEndpoint endpoint = mDevice.getInterface(0).getEndpoint(0);
if (ENABLE_ASYNC_READS) {
final int readAmt;
synchronized (mReadBufferLock) {
// mReadBuffer is only used for maximum read size.
readAmt = Math.min(dest.length, mReadBuffer.length);
}
final UsbRequest request = new UsbRequest();
request.initialize(mConnection, endpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, readAmt)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int payloadBytesRead = buf.position() - MODEM_STATUS_HEADER_LENGTH;
if (payloadBytesRead > 0) {
Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return payloadBytesRead;
} else {
return 0;
}
} else {
final int totalBytesRead;
synchronized (mReadBufferLock) {
final int readAmt = Math.min(dest.length, mReadBuffer.length);
totalBytesRead = mConnection.bulkTransfer(endpoint, mReadBuffer, readAmt, timeoutMillis);
if (totalBytesRead < MODEM_STATUS_HEADER_LENGTH) {
throw new IOException("Expected at least " + MODEM_STATUS_HEADER_LENGTH + " bytes");
}
return filterStatusBytes(mReadBuffer, dest, totalBytesRead, endpoint.getMaxPacketSize());
}
}
}
@Override
public void open(UsbDeviceConnection connection) throws IOException {
if (mConnection != null) {
throw new IOException("Already open");
}
mConnection = connection;
boolean opened = false;
try {
Log.d(TAG, "claiming interfaces, count=" + mDevice.getInterfaceCount());
mControlInterface = mDevice.getInterface(0);
Log.d(TAG, "Control iface=" + mControlInterface);
// class should be USB_CLASS_COMM
if (!mConnection.claimInterface(mControlInterface, true)) {
throw new IOException("Could not claim control interface.");
}
mControlEndpoint = mControlInterface.getEndpoint(0);
Log.d(TAG, "Control endpoint direction: " + mControlEndpoint.getDirection());
Log.d(TAG, "Claiming data interface.");
mDataInterface = mDevice.getInterface(1);
Log.d(TAG, "data iface=" + mDataInterface);
// class should be USB_CLASS_CDC_DATA
if (!mConnection.claimInterface(mDataInterface, true)) {
throw new IOException("Could not claim data interface.");
}
mReadEndpoint = mDataInterface.getEndpoint(1);
Log.d(TAG, "Read endpoint direction: " + mReadEndpoint.getDirection());
mWriteEndpoint = mDataInterface.getEndpoint(0);
Log.d(TAG, "Write endpoint direction: " + mWriteEndpoint.getDirection());
if (mEnableAsyncReads) {
Log.d(TAG, "Async reads enabled");
} else {
Log.d(TAG, "Async reads disabled.");
}
opened = true;
} finally {
if (!opened) {
mConnection = null;
}
}
}
@Override
public boolean open() {
// Restart the working thread and writeThread if it has been killed before and get and claim
// interface
restartWorkingThread();
restartWriteThread();
if (connection.claimInterface(mInterface, true)) {
Log.i(CLASS_ID, "Interface succesfully claimed");
} else {
Log.i(CLASS_ID, "Interface could not be claimed");
return false;
}
// Assign endpoints
int numberEndpoints = mInterface.getEndpointCount();
for (int i = 0; i <= numberEndpoints - 1; i++) {
UsbEndpoint endpoint = mInterface.getEndpoint(i);
if (endpoint.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK
&& endpoint.getDirection() == UsbConstants.USB_DIR_IN) {
inEndpoint = endpoint;
} else {
outEndpoint = endpoint;
}
}
// Default Setup
if (setControlCommand(XDCVCP_IFC_ENABLE, XDCVCP_UART_ENABLE, null) < 0) return false;
setBaudRate(DEFAULT_BAUDRATE);
if (setControlCommand(XDCVCP_SET_LINE_CTL, XDCVCP_LINE_CTL_DEFAULT, null) < 0) return false;
setFlowControl(UsbSerialInterface.FLOW_CONTROL_OFF);
if (setControlCommand(XDCVCP_SET_MHS, XDCVCP_MHS_DEFAULT, null) < 0) return false;
// Initialize UsbRequest
requestIN = new UsbRequest();
requestIN.initialize(connection, inEndpoint);
// Pass references to the threads
setThreadsParams(requestIN, outEndpoint);
return true;
}
/**
* Initialize the USB device. Determines endpoints and prepares communication.
*
* @throws IOException if the device cannot be opened
*/
private void initDevice() throws IOException {
Log.d(LOG_TAG, "setDevice " + this.mUsbDevice);
// find interface
if (this.mUsbDevice.getInterfaceCount() != 1) {
Log.e(LOG_TAG, "Could not find interface");
return;
}
mIntf = this.mUsbDevice.getInterface(0);
// device should have two endpoints
if (mIntf.getEndpointCount() != 2) {
Log.e(LOG_TAG, "Could not find endpoints");
return;
}
// endpoints should be of type bulk
UsbEndpoint ep = mIntf.getEndpoint(0);
if (ep.getType() != UsbConstants.USB_ENDPOINT_XFER_BULK) {
Log.e(LOG_TAG, "Endpoint is not of type bulk");
return;
}
// check endpoint direction
if (ep.getDirection() == UsbConstants.USB_DIR_IN) {
mEpIn = mIntf.getEndpoint(0);
mEpOut = mIntf.getEndpoint(1);
} else {
mEpIn = mIntf.getEndpoint(1);
mEpOut = mIntf.getEndpoint(0);
}
UsbDeviceConnection connection = mUsbManager.openDevice(mUsbDevice);
if (connection != null && connection.claimInterface(mIntf, true)) {
Log.d(LOG_TAG, "open SUCCESS");
mConnection = connection;
} else {
Log.d(LOG_TAG, "open FAIL");
throw new IOException("could not open usb connection");
}
}
@Override
public void open(UsbDeviceConnection connection) throws IOException {
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.getEndpointCount(); ++i) {
UsbEndpoint currentEndpoint = usbInterface.getEndpoint(i);
switch (currentEndpoint.getAddress()) {
case READ_ENDPOINT:
mReadEndpoint = currentEndpoint;
break;
case WRITE_ENDPOINT:
mWriteEndpoint = currentEndpoint;
break;
case INTERRUPT_ENDPOINT:
mInterruptEndpoint = currentEndpoint;
break;
}
}
if (mDevice.getDeviceClass() == 0x02) {
mDeviceType = DEVICE_TYPE_0;
} else {
try {
Method getRawDescriptorsMethod = mConnection.getClass().getMethod("getRawDescriptors");
byte[] rawDescriptors = (byte[]) getRawDescriptorsMethod.invoke(mConnection);
byte maxPacketSize0 = rawDescriptors[7];
if (maxPacketSize0 == 64) {
mDeviceType = DEVICE_TYPE_HX;
} else if ((mDevice.getDeviceClass() == 0x00) || (mDevice.getDeviceClass() == 0xff)) {
mDeviceType = DEVICE_TYPE_1;
} else {
Log.w(TAG, "Could not detect PL2303 subtype, " + "Assuming that it is a HX device");
mDeviceType = DEVICE_TYPE_HX;
}
} catch (NoSuchMethodException e) {
Log.w(
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.e(
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);
}
}
}
