Merge pull request #1471 from qmk/lufa_lib

Update LUFA and move it to /lib/lufa

1 files changed, 202 insertions, 0 deletions

diff --git a/lib/lufa/Demos/Device/ClassDriver/Joystick/Joystick.c b/lib/lufa/Demos/Device/ClassDriver/Joystick/Joystick.c
new file mode 100644
index 0000000000..d1f40ec0d7
--- /dev/null
+++ b/lib/lufa/Demos/Device/ClassDriver/Joystick/Joystick.c
@@ -0,0 +1,202 @@
+/*
+             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"
+
+/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
+static uint8_t PrevJoystickHIDReportBuffer[sizeof(USB_JoystickReport_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 Joystick_HID_Interface =
+	{
+		.Config =
+			{
+				.InterfaceNumber              = INTERFACE_ID_Joystick,
+				.ReportINEndpoint             =
+					{
+						.Address              = JOYSTICK_EPADDR,
+						.Size                 = JOYSTICK_EPSIZE,
+						.Banks                = 1,
+					},
+				.PrevReportINBuffer           = PrevJoystickHIDReportBuffer,
+				.PrevReportINBufferSize       = sizeof(PrevJoystickHIDReportBuffer),
+			},
+	};
+
+
+/** 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(&Joystick_HID_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);
+#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 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(&Joystick_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(&Joystick_HID_Interface);
+}
+
+/** Event handler for the USB device Start Of Frame event. */
+void EVENT_USB_Device_StartOfFrame(void)
+{
+	HID_Device_MillisecondElapsed(&Joystick_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_JoystickReport_Data_t* JoystickReport = (USB_JoystickReport_Data_t*)ReportData;
+
+	uint8_t JoyStatus_LCL    = Joystick_GetStatus();
+	uint8_t ButtonStatus_LCL = Buttons_GetStatus();
+
+	if (JoyStatus_LCL & JOY_UP)
+	  JoystickReport->Y = -100;
+	else if (JoyStatus_LCL & JOY_DOWN)
+	  JoystickReport->Y =  100;
+
+	if (JoyStatus_LCL & JOY_LEFT)
+	  JoystickReport->X = -100;
+	else if (JoyStatus_LCL & JOY_RIGHT)
+	  JoystickReport->X =  100;
+
+	if (JoyStatus_LCL & JOY_PRESS)
+	  JoystickReport->Button |= (1 << 1);
+
+	if (ButtonStatus_LCL & BUTTONS_BUTTON1)
+	  JoystickReport->Button |= (1 << 0);
+
+	*ReportSize = sizeof(USB_JoystickReport_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
+}
+