Add incomplete Android Accessory Host LowLevel demo.

1 files changed, 267 insertions, 0 deletions

diff --git a/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c b/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c
new file mode 100644
index 000000000..0c15b8acf
--- /dev/null
+++ b/Demos/Host/Incomplete/AndroidAccessoryHost/AndroidAccessoryHost.c
@@ -0,0 +1,267 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2011.

+

+  dean [at] fourwalledcubicle [dot] com

+           www.lufa-lib.org

+*/

+

+/*

+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)

+

+  Permission to use, copy, modify, distribute, and sell this

+  software and its documentation for any purpose is hereby granted

+  without fee, provided that the above copyright notice appear in

+  all copies and that both that the copyright notice and this

+  permission notice and warranty disclaimer appear in supporting

+  documentation, and that the name of the author not be used in

+  advertising or publicity pertaining to distribution of the

+  software without specific, written prior permission.

+

+  The author disclaim all warranties with regard to this

+  software, including all implied warranties of merchantability

+  and fitness.  In no event shall the author be liable for any

+  special, indirect or consequential damages or any damages

+  whatsoever resulting from loss of use, data or profits, whether

+  in an action of contract, negligence or other tortious action,

+  arising out of or in connection with the use or performance of

+  this software.

+*/

+

+/** \file

+ *

+ *  Main source file for the AndroidAccessoryHost demo. This file contains the main tasks

+ *  of the demo and is responsible for the initial application hardware configuration.

+ */

+

+#include "AndroidAccessoryHost.h"

+

+/** Main program entry point. This routine configures the hardware required by the application, then

+ *  enters a loop to run the application tasks in sequence.

+ */

+int main(void)

+{

+	SetupHardware();

+

+	puts_P(PSTR(ESC_FG_CYAN "Android Accessory Host Demo running.\r\n" ESC_FG_WHITE));

+

+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

+	sei();

+

+	for (;;)

+	{

+		Android_Host_Task();

+		USB_USBTask();

+	}

+}

+

+/** Configures the board hardware and chip peripherals for the demo's functionality. */

+void SetupHardware(void)

+{

+	/* Disable watchdog if enabled by bootloader/fuses */

+	MCUSR &= ~(1 << WDRF);

+	wdt_disable();

+

+	/* Disable clock division */

+	clock_prescale_set(clock_div_1);

+

+	/* Hardware Initialization */

+	Serial_Init(9600, false);

+	LEDs_Init();

+	USB_Init();

+

+	/* Create a stdio stream for the serial port for stdin and stdout */

+	Serial_CreateStream(NULL);

+}

+

+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and

+ *  starts the library USB task to begin the enumeration and USB management process.

+ */

+void EVENT_USB_Host_DeviceAttached(void)

+{

+	puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));

+	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);

+}

+

+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and

+ *  stops the library USB task management process.

+ */

+void EVENT_USB_Host_DeviceUnattached(void)

+{

+	puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));

+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

+}

+

+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully

+ *  enumerated by the host and is now ready to be used by the application.

+ */

+void EVENT_USB_Host_DeviceEnumerationComplete(void)

+{

+	LEDs_SetAllLEDs(LEDMASK_USB_READY);

+}

+

+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */

+void EVENT_USB_Host_HostError(const uint8_t ErrorCode)

+{

+	USB_Disable();

+

+	printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"

+	                         " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);

+

+	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

+	for(;;);

+}

+

+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while

+ *  enumerating an attached USB device.

+ */

+void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,

+                                            const uint8_t SubErrorCode)

+{

+	printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"

+	                         " -- Error Code %d\r\n"

+	                         " -- Sub Error Code %d\r\n"

+	                         " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);

+

+	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

+}

+

+/** Task to set the configuration of the attached device after it has been enumerated. */

+void Android_Host_Task(void)

+{

+	uint8_t ErrorCode;

+

+	switch (USB_HostState)

+	{

+		case HOST_STATE_Addressed:

+			puts_P(PSTR("Getting Device Data.\r\n"));

+

+			/* Get and process the configuration descriptor data */

+			ErrorCode = ProcessDeviceDescriptor();

+			

+			/* Save whether the Android device needs to be mode-switched later on */

+			bool RequiresModeSwitch = (ErrorCode == NonAccessoryModeAndroidDevice);

+			

+			/* Error out if the device is not an Android device or an error ocurred */

+			if ((ErrorCode != AccessoryModeAndroidDevice) && !(RequiresModeSwitch))

+			{

+				if (ErrorCode == DevControlError)

+				  puts_P(PSTR(ESC_FG_RED "Control Error (Get Device).\r\n"));

+				else

+				  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));

+

+				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

+

+				/* Indicate error via status LEDs */

+				LEDs_SetAllLEDs(LEDS_LED1);

+

+				/* Wait until USB device disconnected */

+				USB_HostState = HOST_STATE_WaitForDeviceRemoval;

+				break;

+			}

+

+			printf_P(PSTR("Android Device Detected - %sAccessory mode.\r\n"), (RequiresModeSwitch ? "Non-" : ""));

+

+			/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */

+			if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)

+			{

+				printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"

+				                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

+

+				/* Indicate error via status LEDs */

+				LEDs_SetAllLEDs(LEDS_LED1);

+

+				/* Wait until USB device disconnected */

+				USB_HostState = HOST_STATE_WaitForDeviceRemoval;

+				break;

+			}

+			

+			/* Check if a valid Android device was attached, but it is not current in Accessory mode */

+			if (RequiresModeSwitch)

+			{

+				USB_ControlRequest = (USB_Request_Header_t)

+				{

+					.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_VENDOR | REQREC_DEVICE),

+					.bRequest      = ANDROID_Req_StartAccessoryMode,

+					.wValue        = 0,

+					.wIndex        = 0,

+					.wLength       = 0,

+				};

+

+				/* Send the control request for the Android device to switch to accessory mode */

+				Pipe_SelectPipe(PIPE_CONTROLPIPE);

+				USB_Host_SendControlRequest(NULL);

+			

+				/* Wait until USB device disconnected */

+				USB_HostState = HOST_STATE_WaitForDeviceRemoval;

+				break;

+			}

+

+			puts_P(PSTR("Getting Config Data.\r\n"));

+

+			/* Get and process the configuration descriptor data */

+			if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)

+			{

+				if (ErrorCode == ControlError)

+				  puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));

+				else

+				  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));

+

+				printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

+

+				/* Indicate error via status LEDs */

+				LEDs_SetAllLEDs(LEDS_LED1);

+

+				/* Wait until USB device disconnected */

+				USB_HostState = HOST_STATE_WaitForDeviceRemoval;

+				break;

+			}

+

+			puts_P(PSTR("Accessory Mode Android Enumerated.\r\n"));

+

+			USB_HostState = HOST_STATE_Configured;

+			break;

+		case HOST_STATE_Configured:

+			/* Select the data IN pipe */

+			Pipe_SelectPipe(ANDROID_DATA_IN_PIPE);

+			Pipe_Unfreeze();

+

+			/* Check to see if a packet has been received */

+			if (Pipe_IsINReceived())

+			{

+				/* Re-freeze IN pipe after the packet has been received */

+				Pipe_Freeze();

+

+				/* Check if data is in the pipe */

+				if (Pipe_IsReadWriteAllowed())

+				{

+					uint8_t NextReceivedByte = Pipe_BytesInPipe();

+					uint8_t LEDMask          = LEDS_NO_LEDS;

+

+					if (NextReceivedByte & 0x01)

+						LEDMask |= LEDS_LED1;

+

+					if (NextReceivedByte & 0x02)

+						LEDMask |= LEDS_LED2;

+

+					if (NextReceivedByte & 0x04)

+						LEDMask |= LEDS_LED3;

+

+					if (NextReceivedByte & 0x08)

+						LEDMask |= LEDS_LED4;

+

+					LEDs_SetAllLEDs(LEDMask);

+				}

+				else

+				{

+					/* Clear the pipe after all data in the packet has been read, ready for the next packet */

+					Pipe_ClearIN();

+				}

+			}

+

+			/* Re-freeze IN pipe after use */

+			Pipe_Freeze();

+			break;			

+	}

+}

+