diff options
Diffstat (limited to 'lib/lufa/Projects/MediaController/MediaController.c')
| -rw-r--r-- | lib/lufa/Projects/MediaController/MediaController.c | 184 | 
1 files changed, 184 insertions, 0 deletions
| diff --git a/lib/lufa/Projects/MediaController/MediaController.c b/lib/lufa/Projects/MediaController/MediaController.c new file mode 100644 index 0000000000..5b3121a50b --- /dev/null +++ b/lib/lufa/Projects/MediaController/MediaController.c @@ -0,0 +1,184 @@ +/* +             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 MediaControl project. This file contains the main tasks of + *  the demo and is responsible for the initial application hardware configuration. + */ + +#include "MediaController.h" + +/** Buffer to hold the previously generated Media Control HID report, for comparison purposes inside the HID class driver. */ +static uint8_t PrevMediaControlHIDReportBuffer[sizeof(USB_MediaReport_Data_t)]; + +/** LUFA HID Class driver interface configuration and state information. This structure is + *  passed to all HID Class driver functions, so that multiple instances of the same class + *  within a device can be differentiated from one another. + */ +USB_ClassInfo_HID_Device_t MediaControl_HID_Interface = + 	{ +		.Config = +			{ +				.InterfaceNumber              = INTERFACE_ID_HID, +				.ReportINEndpoint             = +					{ +						.Address              = MEDIACONTROL_HID_EPADDR, +						.Size                 = MEDIACONTROL_HID_EPSIZE, +						.Banks                = 1, +					}, +				.PrevReportINBuffer           = PrevMediaControlHIDReportBuffer, +				.PrevReportINBufferSize       = sizeof(PrevMediaControlHIDReportBuffer), +			}, +    }; + + +/** Main program entry point. This routine contains the overall program flow, including initial + *  setup of all components and the main program loop. + */ +int main(void) +{ +	SetupHardware(); + +	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +	GlobalInterruptEnable(); + +	for (;;) +	{ +		HID_Device_USBTask(&MediaControl_HID_Interface); +		USB_USBTask(); +	} +} + +/** Configures the board hardware and chip peripherals for the demo's functionality. */ +void SetupHardware() +{ +#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 */ +	Joystick_Init(); +	LEDs_Init(); +	Buttons_Init(); +	USB_Init(); +} + +/** Event handler for the library USB Connection event. */ +void EVENT_USB_Device_Connect(void) +{ +	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} + +/** Event handler for the library USB Disconnection event. */ +void EVENT_USB_Device_Disconnect(void) +{ +	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} + +/** Event handler for the library USB Configuration Changed event. */ +void EVENT_USB_Device_ConfigurationChanged(void) +{ +	bool ConfigSuccess = true; + +	ConfigSuccess &= HID_Device_ConfigureEndpoints(&MediaControl_HID_Interface); + +	USB_Device_EnableSOFEvents(); + +	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR); +} + +/** Event handler for the library USB Control Request reception event. */ +void EVENT_USB_Device_ControlRequest(void) +{ +	HID_Device_ProcessControlRequest(&MediaControl_HID_Interface); +} + +/** Event handler for the USB device Start Of Frame event. */ +void EVENT_USB_Device_StartOfFrame(void) +{ +	HID_Device_MillisecondElapsed(&MediaControl_HID_Interface); +} + +/** HID class driver callback function for the creation of HID reports to the host. + * + *  \param[in]     HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced + *  \param[in,out] ReportID    Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID + *  \param[in]     ReportType  Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature + *  \param[out]    ReportData  Pointer to a buffer where the created report should be stored + *  \param[out]    ReportSize  Number of bytes written in the report (or zero if no report is to be sent) + * + *  \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent + */ +bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, +                                         uint8_t* const ReportID, +                                         const uint8_t ReportType, +                                         void* ReportData, +                                         uint16_t* const ReportSize) +{ +	USB_MediaReport_Data_t* MediaReport = (USB_MediaReport_Data_t*)ReportData; + +	uint8_t JoyStatus_LCL    = Joystick_GetStatus(); +	uint8_t ButtonStatus_LCL = Buttons_GetStatus(); + +	/* Update the Media Control report with the user button presses */ +	MediaReport->Mute          = ((ButtonStatus_LCL & BUTTONS_BUTTON1) ? true : false); +	MediaReport->PlayPause     = ((JoyStatus_LCL & JOY_PRESS) ? true : false); +	MediaReport->VolumeUp      = ((JoyStatus_LCL & JOY_UP)    ? true : false); +	MediaReport->VolumeDown    = ((JoyStatus_LCL & JOY_DOWN)  ? true : false); +	MediaReport->PreviousTrack = ((JoyStatus_LCL & JOY_LEFT)  ? true : false); +	MediaReport->NextTrack     = ((JoyStatus_LCL & JOY_RIGHT) ? true : false); + +	*ReportSize = sizeof(USB_MediaReport_Data_t); +	return false; +} + +/** HID class driver callback function for the processing of HID reports from the host. + * + *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced + *  \param[in] ReportID    Report ID of the received report from the host + *  \param[in] ReportType  The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature + *  \param[in] ReportData  Pointer to a buffer where the received report has been stored + *  \param[in] ReportSize  Size in bytes of the received HID report + */ +void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, +                                          const uint8_t ReportID, +                                          const uint8_t ReportType, +                                          const void* ReportData, +                                          const uint16_t ReportSize) +{ +	// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports +} + | 
