3 Copyright (C) Dean Camera, 2014.
5 dean [at] fourwalledcubicle [dot] com
10 Copyright 2014 Dean Camera (dean [at] fourwalledcubicle [dot] com)
12 Permission to use, copy, modify, distribute, and sell this
13 software and its documentation for any purpose is hereby granted
14 without fee, provided that the above copyright notice appear in
15 all copies and that both that the copyright notice and this
16 permission notice and warranty disclaimer appear in supporting
17 documentation, and that the name of the author not be used in
18 advertising or publicity pertaining to distribution of the
19 software without specific, written prior permission.
21 The author disclaims all warranties with regard to this
22 software, including all implied warranties of merchantability
23 and fitness. In no event shall the author be liable for any
24 special, indirect or consequential damages or any damages
25 whatsoever resulting from loss of use, data or profits, whether
26 in an action of contract, negligence or other tortious action,
27 arising out of or in connection with the use or performance of
33 * Main source file for the AndroidAccessoryHost demo. This file contains the main tasks
34 * of the demo and is responsible for the initial application hardware configuration.
37 #include "AndroidAccessoryHost.h"
39 /** Main program entry point. This routine configures the hardware required by the application, then
40 * enters a loop to run the application tasks in sequence.
46 puts_P(PSTR(ESC_FG_CYAN "Android Accessory Host Demo running.\r\n" ESC_FG_WHITE));
48 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
49 GlobalInterruptEnable();
58 /** Configures the board hardware and chip peripherals for the demo's functionality. */
59 void SetupHardware(void)
61 #if (ARCH == ARCH_AVR8)
62 /* Disable watchdog if enabled by bootloader/fuses */
63 MCUSR &= ~(1 << WDRF);
66 /* Disable clock division */
67 clock_prescale_set(clock_div_1);
70 /* Hardware Initialization */
71 Serial_Init(9600, false);
75 /* Create a stdio stream for the serial port for stdin and stdout */
76 Serial_CreateStream(NULL);
79 /** Task to set the configuration of the attached device after it has been enumerated. */
80 void AndroidHost_Task(void)
82 if (USB_HostState != HOST_STATE_Configured)
85 /* Select the data IN pipe */
86 Pipe_SelectPipe(ANDROID_DATA_IN_PIPE);
89 /* Check to see if a packet has been received */
90 if (Pipe_IsINReceived())
92 /* Re-freeze IN pipe after the packet has been received */
95 /* Check if data is in the pipe */
96 if (Pipe_IsReadWriteAllowed())
98 uint8_t NextReceivedByte = Pipe_Read_8();
99 uint8_t LEDMask = LEDS_NO_LEDS;
101 if (NextReceivedByte & 0x01)
102 LEDMask |= LEDS_LED1;
104 if (NextReceivedByte & 0x02)
105 LEDMask |= LEDS_LED2;
107 if (NextReceivedByte & 0x04)
108 LEDMask |= LEDS_LED3;
110 if (NextReceivedByte & 0x08)
111 LEDMask |= LEDS_LED4;
113 LEDs_SetAllLEDs(LEDMask);
117 /* Clear the pipe after all data in the packet has been read, ready for the next packet */
122 /* Re-freeze IN pipe after use */
126 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
127 * starts the library USB task to begin the enumeration and USB management process.
129 void EVENT_USB_Host_DeviceAttached(void)
131 puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
132 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
135 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
136 * stops the library USB task management process.
138 void EVENT_USB_Host_DeviceUnattached(void)
140 puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
141 LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
144 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
145 * enumerated by the host and is now ready to be used by the application.
147 void EVENT_USB_Host_DeviceEnumerationComplete(void)
149 puts_P(PSTR("Getting Device Data.\r\n"));
151 /* Get and process the configuration descriptor data */
152 uint8_t ErrorCode = ProcessDeviceDescriptor();
154 bool RequiresModeSwitch = (ErrorCode == NonAccessoryModeAndroidDevice);
156 /* Error out if the device is not an Android device or an error occurred */
157 if ((ErrorCode != AccessoryModeAndroidDevice) && (ErrorCode != NonAccessoryModeAndroidDevice))
159 if (ErrorCode == ControlError)
160 puts_P(PSTR(ESC_FG_RED "Control Error (Get Device).\r\n"));
162 puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
164 printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
166 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
170 printf_P(PSTR("Android Device Detected - %sAccessory mode.\r\n"), (RequiresModeSwitch ? "Non-" : ""));
172 /* Check if a valid Android device was attached, but it is not current in Accessory mode */
173 if (RequiresModeSwitch)
175 uint16_t AndroidProtocol;
177 /* Fetch the version of the Android Accessory Protocol supported by the device */
178 if ((ErrorCode = Android_GetAccessoryProtocol(&AndroidProtocol)) != HOST_SENDCONTROL_Successful)
180 printf_P(PSTR(ESC_FG_RED "Control Error (Get Protocol).\r\n"
181 " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
183 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
187 /* Validate the returned protocol version */
188 if (AndroidProtocol != AOA_PROTOCOL_AccessoryV1)
190 puts_P(PSTR(ESC_FG_RED "Accessory Mode Not Supported."));
192 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
196 /* Send the device strings and start the Android Accessory Mode */
197 Android_SendString(AOA_STRING_Manufacturer, "Dean Camera");
198 Android_SendString(AOA_STRING_Model, "LUFA Android Demo");
199 Android_SendString(AOA_STRING_Description, "LUFA Android Demo");
200 Android_SendString(AOA_STRING_Version, "1.0");
201 Android_SendString(AOA_STRING_URI, "http://www.lufa-lib.org");
202 Android_SendString(AOA_STRING_Serial, "0000000012345678");
204 Android_StartAccessoryMode();
208 puts_P(PSTR("Getting Config Data.\r\n"));
210 /* Get and process the configuration descriptor data */
211 if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
213 if (ErrorCode == ControlError)
214 puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
216 puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
218 printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
220 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
224 /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
225 if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
227 printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
228 " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
230 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
234 puts_P(PSTR("Accessory Mode Android Enumerated.\r\n"));
235 LEDs_SetAllLEDs(LEDMASK_USB_READY);
238 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
239 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
243 printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
244 " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
246 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
250 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
251 * enumerating an attached USB device.
253 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
254 const uint8_t SubErrorCode)
256 printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
257 " -- Error Code %d\r\n"
258 " -- Sub Error Code %d\r\n"
259 " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
261 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);