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+/*
+ 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
+}
+