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Code Issues Releases Wiki Activity

Add support for Cr50 (Chromebook CCD) (#540)

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Vladimir Serbinenko 2023-10-02 08:19:57 +02:00 committed by GitHub
parent 80a555a189
commit 2a2463cd12
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3 changed files with 100 additions and 0 deletions
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96
usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/ChromeCcdSerialDriver.java Normal file
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@ -0,0 +1,96 @@
package com.hoho.android.usbserial.driver;
import android.hardware.usb.UsbConstants;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbEndpoint;
import android.hardware.usb.UsbInterface;
import android.util.Log;
import java.io.IOException;
import java.util.Collections;
import java.util.EnumSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.ArrayList;
public class ChromeCcdSerialDriver implements UsbSerialDriver{
private final String TAG = ChromeCcdSerialDriver.class.getSimpleName();
private final UsbDevice mDevice;
private final List<UsbSerialPort> mPorts;
@Override
public UsbDevice getDevice() {
return mDevice;
}
@Override
public List<UsbSerialPort> getPorts() {
return mPorts;
}
public ChromeCcdSerialDriver(UsbDevice mDevice) {
this.mDevice = mDevice;
mPorts = new ArrayList<UsbSerialPort>();
for (int i = 0; i < 3; i++)
mPorts.add(new ChromeCcdSerialPort(mDevice, i));
}
public class ChromeCcdSerialPort extends CommonUsbSerialPort {
private UsbInterface mDataInterface;
public ChromeCcdSerialPort(UsbDevice device, int portNumber) {
super(device, portNumber);
}
@Override
protected void openInt() throws IOException {
Log.d(TAG, "claiming interfaces, count=" + mDevice.getInterfaceCount());
mDataInterface = mDevice.getInterface(mPortNumber);
if (!mConnection.claimInterface(mDataInterface, true)) {
throw new IOException("Could not claim shared control/data interface");
}
Log.d(TAG, "endpoint count=" + mDataInterface.getEndpointCount());
for (int i = 0; i < mDataInterface.getEndpointCount(); ++i) {
UsbEndpoint ep = mDataInterface.getEndpoint(i);
if ((ep.getDirection() == UsbConstants.USB_DIR_IN) && (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK)) {
mReadEndpoint = ep;
} else if ((ep.getDirection() == UsbConstants.USB_DIR_OUT) && (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK)) {
mWriteEndpoint = ep;
}
}
}
@Override
protected void closeInt() {
try {
mConnection.releaseInterface(mDataInterface);
} catch(Exception ignored) {}
}
@Override
public UsbSerialDriver getDriver() {
return ChromeCcdSerialDriver.this;
}
@Override
public EnumSet<ControlLine> getControlLines() throws IOException {
return EnumSet.noneOf(ControlLine.class);
}
@Override
public EnumSet<ControlLine> getSupportedControlLines() throws IOException {
return EnumSet.noneOf(ControlLine.class);
}
}
public static Map<Integer, int[]> getSupportedDevices() {
final Map<Integer, int[]> supportedDevices = new LinkedHashMap<>();
supportedDevices.put(UsbId.VENDOR_GOOGLE, new int[]{
UsbId.GOOGLE_CR50,
});
return supportedDevices;
}
}

3
usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java
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@ -37,6 +37,9 @@ public final class UsbId {
public static final int PROLIFIC_PL2303GE = 0x23e3; // "
public static final int PROLIFIC_PL2303GS = 0x23f3; // "
public static final int VENDOR_GOOGLE = 0x18d1;
public static final int GOOGLE_CR50 = 0x5014;
public static final int VENDOR_QINHENG = 0x1a86;
public static final int QINHENG_CH340 = 0x7523;
public static final int QINHENG_CH341A = 0x5523;

1
usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbSerialProber.java
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@ -38,6 +38,7 @@ public class UsbSerialProber {
probeTable.addDriver(ProlificSerialDriver.class);
probeTable.addDriver(Ch34xSerialDriver.class);
probeTable.addDriver(GsmModemSerialDriver.class);
probeTable.addDriver(ChromeCcdSerialDriver.class);
return probeTable;
}