Begin work on keyboard device driver

USBHost.h

 	uint8_t  portstate[7];
 };
 
+class KeyboardController : public USBDriver {
+public:
+	KeyboardController();
+	int     available();
+	int     read();
+	uint8_t getKey();
+	uint8_t getModifiers();
+	uint8_t getOemKey();
+	void    attachPress(void (*keyPressed)());
+	void    attachRelease(void (*keyReleased)());
+protected:
+	virtual bool claim(Device_t *device, int type, const uint8_t *descriptors);
+	virtual void disconnect();
+	static void callback(const Transfer_t *transfer);
+	void new_data(const Transfer_t *transfer);
+private:
+	void (*keyPressedFunction)();
+	void (*keyReleasedFunction)();
+	Pipe_t *datapipe;
+	uint8_t report[8];
+};
 
 
 #endif

k66_usbhost.ino

 USBHub hub1;
 USBHub hub2;
 USBHub hub3;
+KeyboardController keyboard;
 
 void setup()
 {

keyboard.cpp

+/* USB EHCI Host for Teensy 3.6
+ * Copyright 2017 Paul Stoffregen (paul@pjrc.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <Arduino.h>
+#include "USBHost.h"
+
+
+KeyboardController::KeyboardController()
+{
+	// TODO: free Device_t, Pipe_t & Transfer_t we will need
+	driver_ready_for_device(this);
+}
+
+bool KeyboardController::claim(Device_t *dev, int type, const uint8_t *descriptors)
+{
+	Serial.print("KeyboardController claim this=");
+	Serial.println((uint32_t)this, HEX);
+
+	// only claim at interface level
+	if (type != 1) return false;
+
+	return false;
+
+	uint32_t endpoint=1;
+	datapipe = new_Pipe(dev, 3, endpoint, 1, 8, 64);
+	queue_Data_Transfer(datapipe, report, 8, this);
+	return true;
+}
+
+void KeyboardController::callback(const Transfer_t *transfer)
+{
+	Serial.println("KeyboardController Callback (static)");
+	if (transfer->driver) {
+		((KeyboardController *)(transfer->driver))->new_data(transfer);
+	}
+}
+
+void KeyboardController::new_data(const Transfer_t *transfer)
+{
+	Serial.println("KeyboardController Callback (member)");
+	// TODO: parse the new data
+	queue_Data_Transfer(datapipe, report, 8, this);
+}
+
+void KeyboardController::disconnect()
+{
+	// TODO: free resources
+}
+
+
+