Merge pull request #1471 from qmk/lufa_lib

Update LUFA and move it to /lib/lufa

1 files changed, 253 insertions, 0 deletions

diff --git a/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c b/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c
new file mode 100644
index 0000000000..916457a2f4
--- /dev/null
+++ b/lib/lufa/Demos/Device/LowLevel/GenericHID/GenericHID.c
@@ -0,0 +1,253 @@
+/*
+             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 GenericHID demo. This file contains the main tasks of the demo and
+ *  is responsible for the initial application hardware configuration.
+ */
+
+#include "GenericHID.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 */
+	LEDs_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 task.
+ */
+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 sets the current configuration
+ *  of the USB device after enumeration, and configures the generic HID device endpoints.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+	bool ConfigSuccess = true;
+
+	/* Setup HID Report Endpoints */
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_IN_EPADDR, EP_TYPE_INTERRUPT, GENERIC_EPSIZE, 1);
+	ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_OUT_EPADDR, EP_TYPE_INTERRUPT, GENERIC_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))
+			{
+				uint8_t GenericData[GENERIC_REPORT_SIZE];
+				CreateGenericHIDReport(GenericData);
+
+				Endpoint_ClearSETUP();
+
+				/* Write the report data to the control endpoint */
+				Endpoint_Write_Control_Stream_LE(&GenericData, sizeof(GenericData));
+				Endpoint_ClearOUT();
+			}
+
+			break;
+		case HID_REQ_SetReport:
+			if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+			{
+				uint8_t GenericData[GENERIC_REPORT_SIZE];
+
+				Endpoint_ClearSETUP();
+
+				/* Read the report data from the control endpoint */
+				Endpoint_Read_Control_Stream_LE(&GenericData, sizeof(GenericData));
+				Endpoint_ClearIN();
+
+				ProcessGenericHIDReport(GenericData);
+			}
+
+			break;
+	}
+}
+
+/** Function to process the last received report from the host.
+ *
+ *  \param[in] DataArray  Pointer to a buffer where the last received report has been stored
+ */
+void ProcessGenericHIDReport(uint8_t* DataArray)
+{
+	/*
+		This is where you need to process reports sent from the host to the device. This
+		function is called each time the host has sent a new report. DataArray is an array
+		holding the report sent from the host.
+	*/
+
+	uint8_t NewLEDMask = LEDS_NO_LEDS;
+
+	if (DataArray[0])
+	  NewLEDMask |= LEDS_LED1;
+
+	if (DataArray[1])
+	  NewLEDMask |= LEDS_LED2;
+
+	if (DataArray[2])
+	  NewLEDMask |= LEDS_LED3;
+
+	if (DataArray[3])
+	  NewLEDMask |= LEDS_LED4;
+
+	LEDs_SetAllLEDs(NewLEDMask);
+}
+
+/** Function to create the next report to send back to the host at the next reporting interval.
+ *
+ *  \param[out] DataArray  Pointer to a buffer where the next report data should be stored
+ */
+void CreateGenericHIDReport(uint8_t* DataArray)
+{
+	/*
+		This is where you need to create reports to be sent to the host from the device. This
+		function is called each time the host is ready to accept a new report. DataArray is
+		an array to hold the report to the host.
+	*/
+
+	uint8_t CurrLEDMask = LEDs_GetLEDs();
+
+	DataArray[0] = ((CurrLEDMask & LEDS_LED1) ? 1 : 0);
+	DataArray[1] = ((CurrLEDMask & LEDS_LED2) ? 1 : 0);
+	DataArray[2] = ((CurrLEDMask & LEDS_LED3) ? 1 : 0);
+	DataArray[3] = ((CurrLEDMask & LEDS_LED4) ? 1 : 0);
+}
+
+void HID_Task(void)
+{
+	/* Device must be connected and configured for the task to run */
+	if (USB_DeviceState != DEVICE_STATE_Configured)
+	  return;
+
+	Endpoint_SelectEndpoint(GENERIC_OUT_EPADDR);
+
+	/* Check to see if a packet has been sent from the host */
+	if (Endpoint_IsOUTReceived())
+	{
+		/* Check to see if the packet contains data */
+		if (Endpoint_IsReadWriteAllowed())
+		{
+			/* Create a temporary buffer to hold the read in report from the host */
+			uint8_t GenericData[GENERIC_REPORT_SIZE];
+
+			/* Read Generic Report Data */
+			Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData), NULL);
+
+			/* Process Generic Report Data */
+			ProcessGenericHIDReport(GenericData);
+		}
+
+		/* Finalize the stream transfer to send the last packet */
+		Endpoint_ClearOUT();
+	}
+
+	Endpoint_SelectEndpoint(GENERIC_IN_EPADDR);
+
+	/* Check to see if the host is ready to accept another packet */
+	if (Endpoint_IsINReady())
+	{
+		/* Create a temporary buffer to hold the report to send to the host */
+		uint8_t GenericData[GENERIC_REPORT_SIZE];
+
+		/* Create Generic Report Data */
+		CreateGenericHIDReport(GenericData);
+
+		/* Write Generic Report Data */
+		Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData), NULL);
+
+		/* Finalize the stream transfer to send the last packet */
+		Endpoint_ClearIN();
+	}
+}
+