1 files changed, 80 insertions, 0 deletions
diff --git a/android/WALT/app/src/main/java/org/chromium/latency/walt/programmer/BootloaderConnection.java b/android/WALT/app/src/main/java/org/chromium/latency/walt/programmer/BootloaderConnection.java
new file mode 100644
index 0000000..0f2e802
--- /dev/null
+++ b/android/WALT/app/src/main/java/org/chromium/latency/walt/programmer/BootloaderConnection.java
@@ -0,0 +1,80 @@
+package org.chromium.latency.walt.programmer;
+
+import android.content.Context;
+import android.hardware.usb.UsbDevice;
+import android.hardware.usb.UsbInterface;
+
+import org.chromium.latency.walt.BaseUsbConnection;
+
+class BootloaderConnection extends BaseUsbConnection {
+    private static final int HALFKAY_VID = 0x16C0;
+    private static final int HALFKAY_PID = 0x0478;
+
+    private static final Object LOCK = new Object();
+    private static BootloaderConnection instance;
+
+    public static BootloaderConnection getInstance(Context context) {
+        synchronized (LOCK) {
+            if (instance == null) {
+                instance = new BootloaderConnection(context.getApplicationContext());
+            }
+            return instance;
+        }
+    }
+
+    @Override
+    public int getPid() {
+        return HALFKAY_PID;
+    }
+
+    @Override
+    public int getVid() {
+        return HALFKAY_VID;
+    }
+
+    @Override
+    protected boolean isCompatibleUsbDevice(UsbDevice usbDevice) {
+        return ((usbDevice.getProductId() == HALFKAY_PID) &&
+                (usbDevice.getVendorId() == HALFKAY_VID));
+    }
+
+    @Override
+    public void onConnect() {
+        int ifIdx = 0;
+
+        UsbInterface iface = usbDevice.getInterface(ifIdx);
+
+        if (usbConnection.claimInterface(iface, true)) {
+            logger.log("Interface claimed successfully\n");
+        } else {
+            logger.log("ERROR - can't claim interface\n");
+        }
+
+        super.onConnect();
+    }
+
+    public void write(byte[] buf, int timeout) {
+        write(buf, 0, buf.length, timeout);
+    }
+
+    public void write(byte[] buf, int index, int len, int timeout) {
+        if (!isConnected()) return;
+
+        while (timeout > 0) {
+            // USB HID Set_Report message
+            int result = usbConnection.controlTransfer(0x21, 9, 0x0200, index, buf, len, timeout);
+
+            if (result >= 0) break;
+            try {
+                Thread.sleep(10);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            timeout -= 10;
+        }
+    }
+
+    private BootloaderConnection(Context context) {
+        super(context);
+    }
+}