Java Code Examples for android.hardware.usb.UsbRequest#initialize()
The following examples show how to use
android.hardware.usb.UsbRequest#initialize() .
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Example 1
| Source File: CommonUsbSerialPort.java From usb-serial-for-android with GNU Lesser General Public License v2.1 | 6 votes |
|
@Override
public void open(UsbDeviceConnection connection) throws IOException {
if (mConnection != null) {
throw new IOException("Already open");
}
mConnection = connection;
try {
openInt(connection);
if (mReadEndpoint == null || mWriteEndpoint == null) {
throw new IOException("Could not get read & write endpoints");
}
mUsbRequest = new UsbRequest();
mUsbRequest.initialize(mConnection, mReadEndpoint);
} catch(Exception e) {
close();
throw e;
}
}
Example 2
| Source File: CP2102SerialDevice.java From UsbSerial with MIT License | 5 votes |
|
@Override
public boolean open()
{
boolean ret = openCP2102();
if(ret)
{
// Initialize UsbRequest
UsbRequest requestIN = new SafeUsbRequest();
requestIN.initialize(connection, inEndpoint);
// Restart the working thread if it has been killed before and get and claim interface
restartWorkingThread();
restartWriteThread();
// Create Flow control thread but it will only be started if necessary
createFlowControlThread();
// Pass references to the threads
setThreadsParams(requestIN, outEndpoint);
asyncMode = true;
isOpen = true;
return true;
}else
{
isOpen = false;
return false;
}
}
Example 3
| Source File: CH34xSerialDevice.java From UsbSerial with MIT License | 5 votes |
|
@Override
public boolean open()
{
boolean ret = openCH34X();
if(ret)
{
// Initialize UsbRequest
UsbRequest requestIN = new SafeUsbRequest();
requestIN.initialize(connection, inEndpoint);
// Restart the working thread if it has been killed before and get and claim interface
restartWorkingThread();
restartWriteThread();
// Create Flow control thread but it will only be started if necessary
createFlowControlThread();
// Pass references to the threads
setThreadsParams(requestIN, outEndpoint);
asyncMode = true;
isOpen = true;
return true;
}else
{
isOpen = false;
return false;
}
}
Example 4
| Source File: FTDISerialDevice.java From UsbSerial with MIT License | 5 votes |
|
@Override
public boolean open()
{
boolean ret = openFTDI();
if(ret)
{
// Initialize UsbRequest
UsbRequest requestIN = new SafeUsbRequest();
requestIN.initialize(connection, inEndpoint);
// Restart the working thread if it has been killed before and get and claim interface
restartWorkingThread();
restartWriteThread();
// Pass references to the threads
setThreadsParams(requestIN, outEndpoint);
asyncMode = true;
isOpen = true;
return true;
}else
{
isOpen = false;
return false;
}
}
Example 5
| Source File: BTChipTransportAndroidHID.java From xmrwallet with Apache License 2.0 | 5 votes |
|
@Override
public byte[] exchange(byte[] command) {
ByteArrayOutputStream response = new ByteArrayOutputStream();
byte[] responseData = null;
int offset = 0;
if (debug) {
Timber.d("=> %s", Dump.dump(command));
}
command = LedgerHelper.wrapCommandAPDU(LEDGER_DEFAULT_CHANNEL, command, HID_BUFFER_SIZE);
UsbRequest requestOut = new UsbRequest();
requestOut.initialize(connection, out);
while (offset != command.length) {
int blockSize = (command.length - offset > HID_BUFFER_SIZE ? HID_BUFFER_SIZE : command.length - offset);
System.arraycopy(command, offset, transferBuffer, 0, blockSize);
requestOut.queue(ByteBuffer.wrap(transferBuffer), HID_BUFFER_SIZE);
connection.requestWait();
offset += blockSize;
}
requestOut.close();
ByteBuffer responseBuffer = ByteBuffer.allocate(HID_BUFFER_SIZE);
UsbRequest requestIn = new UsbRequest();
requestIn.initialize(connection, in);
while ((responseData = LedgerHelper.unwrapResponseAPDU(LEDGER_DEFAULT_CHANNEL, response.toByteArray(), HID_BUFFER_SIZE)) == null) {
responseBuffer.clear();
requestIn.queue(responseBuffer, HID_BUFFER_SIZE);
connection.requestWait();
responseBuffer.rewind();
responseBuffer.get(transferBuffer, 0, HID_BUFFER_SIZE);
response.write(transferBuffer, 0, HID_BUFFER_SIZE);
}
requestIn.close();
if (debug) {
Timber.d("<= %s", Dump.dump(responseData));
}
return responseData;
}
Example 6
| Source File: Trezor.java From green_android with GNU General Public License v3.0 | 5 votes |
|
private void messageWrite(final Message msg) {
final int msg_size = msg.getSerializedSize();
final String msg_name = msg.getClass().getSimpleName();
final int msg_id = MessageType.valueOf("MessageType_" + msg_name).getNumber();
Log.d(TAG, String.format("Got message: %s (%d bytes)", msg_name, msg_size));
final ByteBuffer data = ByteBuffer.allocate(32768);
data.put((byte)'#');
data.put((byte)'#');
data.put((byte)((msg_id >> 8) & 0xFF));
data.put((byte)(msg_id & 0xFF));
data.put((byte)((msg_size >> 24) & 0xFF));
data.put((byte)((msg_size >> 16) & 0xFF));
data.put((byte)((msg_size >> 8) & 0xFF));
data.put((byte)(msg_size & 0xFF));
data.put(msg.toByteArray());
while (data.position() % 63 > 0)
data.put((byte)0);
final UsbRequest request = new UsbRequest();
request.initialize(mConn, mWriteEndpoint);
final int chunks = data.position() / 63;
Log.d(TAG, String.format("Writing %d chunks", chunks));
data.rewind();
for (int i = 0; i < chunks; ++i) {
final byte[] buffer = new byte[64];
buffer[0] = (byte)'?';
data.get(buffer, 1, 63);
//logData("chunk:", buffer);
request.queue(ByteBuffer.wrap(buffer), 64);
mConn.requestWait();
}
request.close();
}
Example 7
| Source File: CdcAcmSerialDriver.java From OkUSB with Apache License 2.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 8
| Source File: CdcAcmSerialDriver.java From usb-with-serial-port with Apache License 2.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt, timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 9
| Source File: FtdiSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, null);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(null, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 10
| Source File: CdcAcmSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 11
| Source File: Cp21xxSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 12
| Source File: ProlificSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 13
| Source File: FtdiSerialDriver.java From xDrip-plus with GNU General Public License v3.0 | 4 votes |
|
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, null);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(null, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 14
| Source File: CdcAcmSerialDriver.java From Arduino-Serial-Controller with GNU Lesser General Public License v2.1 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 15
| Source File: CdcAcmSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 16
| Source File: U2FTransportAndroidHID.java From android-u2f-bridge with Apache License 2.0 | 4 votes |
|
public byte[] exchange(byte tag, byte[] command) throws IOException {
ByteArrayOutputStream response = new ByteArrayOutputStream();
byte[] responseData = null;
int offset = 0;
int responseSize;
if (debug) {
Log.d(LOG_TAG, "=> " + Dump.dump(command));
}
command = helper.wrapCommandAPDU(tag, command, HID_BUFFER_SIZE);
UsbRequest requestWrite = new UsbRequest();
if (!requestWrite.initialize(connection, out)) {
throw new IOException();
}
while (offset != command.length) {
int blockSize = (command.length - offset > HID_BUFFER_SIZE ? HID_BUFFER_SIZE : command.length - offset);
System.arraycopy(command, offset, transferBuffer, 0, blockSize);
if (debug) {
Log.d(LOG_TAG, "wire => " + Dump.dump(transferBuffer));
}
if (!requestWrite.queue(ByteBuffer.wrap(transferBuffer), HID_BUFFER_SIZE)) {
requestWrite.close();
throw new IOException();
}
connection.requestWait();
offset += blockSize;
}
ByteBuffer responseBuffer = ByteBuffer.allocate(HID_BUFFER_SIZE);
UsbRequest requestRead = new UsbRequest();
if (!requestRead.initialize(connection, in)) {
requestRead.close();
requestWrite.close();
throw new IOException();
}
while ((responseData = helper.unwrapResponseAPDU(tag, response.toByteArray(), HID_BUFFER_SIZE)) == null) {
responseBuffer.clear();
if (!requestRead.queue(responseBuffer, HID_BUFFER_SIZE)) {
requestRead.close();
requestWrite.close();
throw new IOException();
}
connection.requestWait();
responseBuffer.rewind();
responseBuffer.get(transferBuffer, 0, HID_BUFFER_SIZE);
if (debug) {
Log.d(LOG_TAG, "wire <= " + Dump.dump(transferBuffer));
}
response.write(transferBuffer, 0, HID_BUFFER_SIZE);
}
if (debug) {
Log.d(LOG_TAG, "<= " + Dump.dump(responseData));
}
requestWrite.close();
requestRead.close();
return responseData;
}
Example 17
| Source File: CdcAcmSerialDriver.java From PodEmu with GNU General Public License v3.0 | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.duration)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 18
| Source File: FtdiSerialDriver.java From xDrip-Experimental with GNU General Public License v3.0 | 4 votes |
|
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, null);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(null, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 19
| Source File: CdcAcmSerialDriver.java From Chorus-RF-Laptimer with MIT License | 4 votes |
|
@Override
public int read(byte[] dest, int timeoutMillis) throws IOException {
if (mEnableAsyncReads) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(mConnection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = mConnection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = mConnection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
Example 20
| Source File: ProlificSerialDriver.java From xDrip with GNU General Public License v3.0 | 4 votes |
|
public int read(byte[] dest, int timeoutMillis, UsbDeviceConnection connection) throws IOException {
if (false) {
final UsbRequest request = new UsbRequest();
try {
request.initialize(connection, mReadEndpoint);
final ByteBuffer buf = ByteBuffer.wrap(dest);
if (!request.queue(buf, dest.length)) {
throw new IOException("Error queueing request.");
}
final UsbRequest response = connection.requestWait();
if (response == null) {
throw new IOException("Null response");
}
final int nread = buf.position();
if (nread > 0) {
//Log.d(TAG, HexDump.dumpHexString(dest, 0, Math.min(32, dest.length)));
return nread;
} else {
return 0;
}
} finally {
request.close();
}
}
final int numBytesRead;
synchronized (mReadBufferLock) {
int readAmt = Math.min(dest.length, mReadBuffer.length);
numBytesRead = connection.bulkTransfer(mReadEndpoint, mReadBuffer, readAmt,
timeoutMillis);
if (numBytesRead < 0) {
// This sucks: we get -1 on timeout, not 0 as preferred.
// We *should* use UsbRequest, except it has a bug/api oversight
// where there is no way to determine the number of bytes read
// in response :\ -- http://b.android.com/28023
if (timeoutMillis == Integer.MAX_VALUE) {
// Hack: Special case "~infinite timeout" as an error.
return -1;
}
return 0;
}
System.arraycopy(mReadBuffer, 0, dest, 0, numBytesRead);
}
return numBytesRead;
}
