1 files changed, 217 insertions, 0 deletions
diff --git a/Demos/Device/LowLevel/Joystick/Joystick.c b/Demos/Device/LowLevel/Joystick/Joystick.c
new file mode 100644
index 0000000000..7536d1a5fe
--- /dev/null
+++ b/Demos/Device/LowLevel/Joystick/Joystick.c
@@ -0,0 +1,217 @@
+/*
+             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 Joystick demo. This file contains the main tasks of the demo and
+ *  is responsible for the initial application hardware configuration.
+ */
+
+#include "Joystick.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();
+
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+	GlobalInterruptEnable();
+
+	for (;;)
+	{
+		HID_Task();
+		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);
+#elif (ARCH == ARCH_XMEGA)
+	/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
+	XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
+	XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
+
+	/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
+	XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
+	XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
+
+	PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
+#endif
+
+	/* Hardware Initialization */
+	Joystick_Init();
+	LEDs_Init();
+	Buttons_Init();
+	USB_Init();
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
+ *  starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Device_Connect(void)
+{
+	/* Indicate USB enumerating */
+	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ *  the status LEDs and stops the USB management and joystick reporting tasks.
+ */
+void EVENT_USB_Device_Disconnect(void)
+{
+	/* Indicate USB not ready */
+	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration
+ *  of the USB device after enumeration - the device endpoints are configured and the joystick reporting task started.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	bool ConfigSuccess = true;
+
+	/* Setup HID Report Endpoint */
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(JOYSTICK_EPADDR, EP_TYPE_INTERRUPT, JOYSTICK_EPSIZE, 1);
+
+	/* Indicate endpoint configuration success or failure */
+	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
+}
+
+/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
+ *  the device from the USB host before passing along unhandled control requests to the library for processing
+ *  internally.
+ */
+void EVENT_USB_Device_ControlRequest(void)
+{
+	/* Handle HID Class specific requests */
+	switch (USB_ControlRequest.bRequest)
+	{
+		case HID_REQ_GetReport:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				USB_JoystickReport_Data_t JoystickReportData;
+
+				/* Create the next HID report to send to the host */
+				GetNextReport(&JoystickReportData);
+
+				Endpoint_ClearSETUP();
+
+				/* Write the report data to the control endpoint */
+				Endpoint_Write_Control_Stream_LE(&JoystickReportData, sizeof(JoystickReportData));
+				Endpoint_ClearOUT();
+			}
+
+			break;
+	}
+}
+
+/** Fills the given HID report data structure with the next HID report to send to the host.
+ *
+ *  \param[out] ReportData  Pointer to a HID report data structure to be filled
+ *
+ *  \return Boolean \c true if the new report differs from the last report, \c false otherwise
+ */
+bool GetNextReport(USB_JoystickReport_Data_t* const ReportData)
+{
+	static uint8_t PrevJoyStatus    = 0;
+	static uint8_t PrevButtonStatus = 0;
+	uint8_t        JoyStatus_LCL    = Joystick_GetStatus();
+	uint8_t        ButtonStatus_LCL = Buttons_GetStatus();
+	bool           InputChanged     = false;
+
+	/* Clear the report contents */
+	memset(ReportData, 0, sizeof(USB_JoystickReport_Data_t));
+
+	if (JoyStatus_LCL & JOY_UP)
+	  ReportData->Y = -100;
+	else if (JoyStatus_LCL & JOY_DOWN)
+	  ReportData->Y =  100;
+
+	if (JoyStatus_LCL & JOY_LEFT)
+	  ReportData->X = -100;
+	else if (JoyStatus_LCL & JOY_RIGHT)
+	  ReportData->X =  100;
+
+	if (JoyStatus_LCL & JOY_PRESS)
+	  ReportData->Button |= (1 << 1);
+
+	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
+	  ReportData->Button |= (1 << 0);
+
+	/* Check if the new report is different to the previous report */
+	InputChanged = (uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(PrevButtonStatus ^ ButtonStatus_LCL);
+
+	/* Save the current joystick status for later comparison */
+	PrevJoyStatus    = JoyStatus_LCL;
+	PrevButtonStatus = ButtonStatus_LCL;
+
+	/* Return whether the new report is different to the previous report or not */
+	return InputChanged;
+}
+
+/** Function to manage HID report generation and transmission to the host. */
+void HID_Task(void)
+{
+	/* Device must be connected and configured for the task to run */
+	if (USB_DeviceState != DEVICE_STATE_Configured)
+	  return;
+
+	/* Select the Joystick Report Endpoint */
+	Endpoint_SelectEndpoint(JOYSTICK_EPADDR);
+
+	/* Check to see if the host is ready for another packet */
+	if (Endpoint_IsINReady())
+	{
+		USB_JoystickReport_Data_t JoystickReportData;
+
+		/* Create the next HID report to send to the host */
+		GetNextReport(&JoystickReportData);
+
+		/* Write Joystick Report Data */
+		Endpoint_Write_Stream_LE(&JoystickReportData, sizeof(JoystickReportData), NULL);
+
+		/* Finalize the stream transfer to send the last packet */
+		Endpoint_ClearIN();
+
+		/* Clear the report data afterwards */
+		memset(&JoystickReportData, 0, sizeof(JoystickReportData));
+	}
+}
+