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Diffstat (limited to 'Demos/Host/ClassDriver/AndroidAccessoryHost/AndroidAccessoryHost.c')
| -rw-r--r-- | Demos/Host/ClassDriver/AndroidAccessoryHost/AndroidAccessoryHost.c | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/Demos/Host/ClassDriver/AndroidAccessoryHost/AndroidAccessoryHost.c b/Demos/Host/ClassDriver/AndroidAccessoryHost/AndroidAccessoryHost.c new file mode 100644 index 0000000000..48178d68de --- /dev/null +++ b/Demos/Host/ClassDriver/AndroidAccessoryHost/AndroidAccessoryHost.c @@ -0,0 +1,239 @@ +/* + 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" + +/** LUFA Android Open Accessory Class driver interface configuration and state information. This + * structure is passed to all Android Open Accessory Class driver functions, so that multiple + * instances of the same class within a device can be differentiated from one another. + */ +USB_ClassInfo_AOA_Host_t AndroidDevice_AOA_Interface = + { + .Config = + { + .DataINPipe = + { + .Address = (PIPE_DIR_IN | 1), + .Banks = 1, + }, + .DataOUTPipe = + { + .Address = (PIPE_DIR_OUT | 2), + .Banks = 1, + }, + .PropertyStrings = + { + [AOA_STRING_Manufacturer] = "Dean Camera", + [AOA_STRING_Model] = "LUFA Android Demo", + [AOA_STRING_Description] = "LUFA Android Demo", + [AOA_STRING_Version] = "1.0", + [AOA_STRING_URI] = "http://www.lufa-lib.org", + [AOA_STRING_Serial] = "0000000012345678", + }, + }, + }; + + +/** 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 (;;) + { + AOAHost_Task(); + + AOA_Host_USBTask(&AndroidDevice_AOA_Interface); + 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 manage an enumerated USB Android Accessory device once connected, to print received data + * from the device to the serial port. + */ +void AOAHost_Task(void) +{ + if (USB_HostState != HOST_STATE_Configured) + return; + + if (AOA_Host_BytesReceived(&AndroidDevice_AOA_Interface)) + { + /* Echo received bytes from the attached device through the USART */ + int16_t ReceivedByte = AOA_Host_ReceiveByte(&AndroidDevice_AOA_Interface); + if (!(ReceivedByte < 0)) + { + /* Turn on and off LED1 based on the bytes received */ + LEDs_ChangeLEDs(LEDS_LED1, ReceivedByte ? LEDS_LED1 : LEDS_NO_LEDS); + + putchar(ReceivedByte); + } + } +} + +/** 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("Device Attached.\r\n")); + 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("\r\nDevice Unattached.\r\n")); + 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_ENUMERATING); + + USB_Descriptor_Device_t DeviceDescriptor; + + if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful) + { + puts_P(PSTR("Error Retrieving Device Descriptor.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + bool NeedModeSwitch; + if (!(AOA_Host_ValidateAccessoryDevice(&AndroidDevice_AOA_Interface, &DeviceDescriptor, &NeedModeSwitch))) + { + puts_P(PSTR("Not an Android device.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + if (NeedModeSwitch) + { + puts_P(PSTR("Not in Accessory mode, switching...\r\n")); + AOA_Host_StartAccessoryMode(&AndroidDevice_AOA_Interface); + return; + } + + uint16_t ConfigDescriptorSize; + uint8_t ConfigDescriptorData[512]; + + if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData, + sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful) + { + puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + if (AOA_Host_ConfigurePipes(&AndroidDevice_AOA_Interface, + ConfigDescriptorSize, ConfigDescriptorData) != AOA_ENUMERROR_NoError) + { + puts_P(PSTR("Attached Device Not a Valid Android Accessory Class Device.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful) + { + puts_P(PSTR("Error Setting Device Configuration.\r\n")); + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + puts_P(PSTR("Android Device 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); +} + + |