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Diffstat (limited to 'Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c')
| -rw-r--r-- | Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c b/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c new file mode 100644 index 000000000..723cf505a --- /dev/null +++ b/Demos/Host/LowLevel/AndroidAccessoryHost/AndroidAccessoryHost.c @@ -0,0 +1,261 @@ +/* + 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 (;;) + { + AndroidHost_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); +} + +/** 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_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(); +} + +/** 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 != ANDROID_PROTOCOL_Accessory) + { + 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(ANDROID_STRING_Manufacturer, "Dean Camera"); + Android_SendString(ANDROID_STRING_Model, "LUFA Android Demo"); + Android_SendString(ANDROID_STRING_Description, "LUFA Android Demo"); + Android_SendString(ANDROID_STRING_Version, "1.0"); + Android_SendString(ANDROID_STRING_URI, "http://www.lufa-lib.org"); + Android_SendString(ANDROID_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); +} + |