diff options
Diffstat (limited to 'Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c')
| -rw-r--r-- | Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c | 263 | 
1 files changed, 263 insertions, 0 deletions
| diff --git a/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c b/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c new file mode 100644 index 0000000000..63d94f78ca --- /dev/null +++ b/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c @@ -0,0 +1,263 @@ +/* +             LUFA Library +     Copyright (C) Dean Camera, 2017. + +  dean [at] fourwalledcubicle [dot] com +           www.lufa-lib.org +*/ + +/* +  Copyright 2017  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 disclaims 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); +	GlobalInterruptEnable(); + +	for (;;) +	{ +		AndroidHost_Task(); +		USB_USBTask(); +	} +} + +/** Configures the board hardware and chip peripherals for the demo's functionality. */ +void SetupHardware(void) +{ +#if (ARCH == ARCH_AVR8) +	/* Disable watchdog if enabled by bootloader/fuses */ +	MCUSR &= ~(1 << WDRF); +	wdt_disable(); + +	/* Disable clock division */ +	clock_prescale_set(clock_div_1); +#endif + +	/* 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); +} + +/** Task to set the configuration of the attached device after it has been enumerated. */ +void AndroidHost_Task(void) +{ +	if (USB_HostState != HOST_STATE_Configured) +	  return; + +	/* 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_Read_8(); +			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(); +} + +/** 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) +{ +	puts_P(PSTR("Getting Device Data.\r\n")); + +	/* Get and process the configuration descriptor data */ +	uint8_t ErrorCode = ProcessDeviceDescriptor(); + +	bool RequiresModeSwitch = (ErrorCode == NonAccessoryModeAndroidDevice); + +	/* Error out if the device is not an Android device or an error occurred */ +	if ((ErrorCode != AccessoryModeAndroidDevice) && (ErrorCode != NonAccessoryModeAndroidDevice)) +	{ +		if (ErrorCode == ControlError) +		  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); + +		LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +		return; +	} + +	printf_P(PSTR("Android Device Detected - %sAccessory mode.\r\n"), (RequiresModeSwitch ? "Non-" : "")); + +	/* Check if a valid Android device was attached, but it is not current in Accessory mode */ +	if (RequiresModeSwitch) +	{ +		uint16_t AndroidProtocol; + +		/* Fetch the version of the Android Accessory Protocol supported by the device */ +		if ((ErrorCode = Android_GetAccessoryProtocol(&AndroidProtocol)) != HOST_SENDCONTROL_Successful) +		{ +			printf_P(PSTR(ESC_FG_RED "Control Error (Get Protocol).\r\n" +			                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + +			LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +			return; +		} + +		/* Validate the returned protocol version */ +		if (AndroidProtocol != AOA_PROTOCOL_AccessoryV1) +		{ +			puts_P(PSTR(ESC_FG_RED "Accessory Mode Not Supported.")); + +			LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +			return; +		} + +		/* Send the device strings and start the Android Accessory Mode */ +		Android_SendString(AOA_STRING_Manufacturer, "Dean Camera"); +		Android_SendString(AOA_STRING_Model,        "LUFA Android Demo"); +		Android_SendString(AOA_STRING_Description,  "LUFA Android Demo"); +		Android_SendString(AOA_STRING_Version,      "1.0"); +		Android_SendString(AOA_STRING_URI,          "http://www.lufa-lib.org"); +		Android_SendString(AOA_STRING_Serial,       "0000000012345678"); + +		Android_StartAccessoryMode(); +		return; +	} + +	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); + +		LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +		return; +	} + +	/* 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); + +		LEDs_SetAllLEDs(LEDMASK_USB_ERROR); +		return; +	} + +	puts_P(PSTR("Accessory Mode Android Enumerated.\r\n")); +	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); +} + | 
