254 lines
7.7 KiB
C
254 lines
7.7 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Main source file for the GenericHID demo. This file contains the main tasks of the demo and
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* is responsible for the initial application hardware configuration.
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*/
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#include "GenericHID.h"
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/** Main program entry point. This routine configures the hardware required by the application, then
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* enters a loop to run the application tasks in sequence.
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*/
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int main(void)
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{
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SetupHardware();
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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GlobalInterruptEnable();
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for (;;)
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{
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HID_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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#if (ARCH == ARCH_AVR8)
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Disable clock division */
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clock_prescale_set(clock_div_1);
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#elif (ARCH == ARCH_XMEGA)
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/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
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XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
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XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
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/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
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XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
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XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
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PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
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#endif
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/* Hardware Initialization */
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LEDs_Init();
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USB_Init();
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}
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/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
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* starts the library USB task to begin the enumeration and USB management process.
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*/
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void EVENT_USB_Device_Connect(void)
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{
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/* Indicate USB enumerating */
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
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* the status LEDs and stops the USB management task.
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*/
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void EVENT_USB_Device_Disconnect(void)
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{
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/* Indicate USB not ready */
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration
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* of the USB device after enumeration, and configures the generic HID device endpoints.
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*/
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void EVENT_USB_Device_ConfigurationChanged(void)
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{
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bool ConfigSuccess = true;
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/* Setup HID Report Endpoints */
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ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_IN_EPADDR, EP_TYPE_INTERRUPT, GENERIC_EPSIZE, 1);
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ConfigSuccess &= Endpoint_ConfigureEndpoint(GENERIC_OUT_EPADDR, EP_TYPE_INTERRUPT, GENERIC_EPSIZE, 1);
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/* Indicate endpoint configuration success or failure */
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LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
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}
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/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to
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* the device from the USB host before passing along unhandled control requests to the library for processing
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* internally.
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*/
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void EVENT_USB_Device_ControlRequest(void)
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{
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/* Handle HID Class specific requests */
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switch (USB_ControlRequest.bRequest)
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{
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case HID_REQ_GetReport:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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uint8_t GenericData[GENERIC_REPORT_SIZE];
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CreateGenericHIDReport(GenericData);
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Endpoint_ClearSETUP();
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/* Write the report data to the control endpoint */
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Endpoint_Write_Control_Stream_LE(&GenericData, sizeof(GenericData));
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Endpoint_ClearOUT();
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}
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break;
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case HID_REQ_SetReport:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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uint8_t GenericData[GENERIC_REPORT_SIZE];
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Endpoint_ClearSETUP();
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/* Read the report data from the control endpoint */
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Endpoint_Read_Control_Stream_LE(&GenericData, sizeof(GenericData));
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Endpoint_ClearIN();
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ProcessGenericHIDReport(GenericData);
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}
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break;
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}
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}
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/** Function to process the last received report from the host.
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*
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* \param[in] DataArray Pointer to a buffer where the last received report has been stored
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*/
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void ProcessGenericHIDReport(uint8_t* DataArray)
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{
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/*
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This is where you need to process reports sent from the host to the device. This
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function is called each time the host has sent a new report. DataArray is an array
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holding the report sent from the host.
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*/
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uint8_t NewLEDMask = LEDS_NO_LEDS;
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if (DataArray[0])
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NewLEDMask |= LEDS_LED1;
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if (DataArray[1])
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NewLEDMask |= LEDS_LED2;
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if (DataArray[2])
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NewLEDMask |= LEDS_LED3;
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if (DataArray[3])
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NewLEDMask |= LEDS_LED4;
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LEDs_SetAllLEDs(NewLEDMask);
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}
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/** Function to create the next report to send back to the host at the next reporting interval.
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*
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* \param[out] DataArray Pointer to a buffer where the next report data should be stored
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*/
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void CreateGenericHIDReport(uint8_t* DataArray)
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{
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/*
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This is where you need to create reports to be sent to the host from the device. This
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function is called each time the host is ready to accept a new report. DataArray is
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an array to hold the report to the host.
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*/
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uint8_t CurrLEDMask = LEDs_GetLEDs();
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DataArray[0] = ((CurrLEDMask & LEDS_LED1) ? 1 : 0);
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DataArray[1] = ((CurrLEDMask & LEDS_LED2) ? 1 : 0);
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DataArray[2] = ((CurrLEDMask & LEDS_LED3) ? 1 : 0);
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DataArray[3] = ((CurrLEDMask & LEDS_LED4) ? 1 : 0);
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}
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void HID_Task(void)
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{
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/* Device must be connected and configured for the task to run */
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if (USB_DeviceState != DEVICE_STATE_Configured)
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return;
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Endpoint_SelectEndpoint(GENERIC_OUT_EPADDR);
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/* Check to see if a packet has been sent from the host */
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if (Endpoint_IsOUTReceived())
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{
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/* Check to see if the packet contains data */
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if (Endpoint_IsReadWriteAllowed())
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{
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/* Create a temporary buffer to hold the read in report from the host */
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uint8_t GenericData[GENERIC_REPORT_SIZE];
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/* Read Generic Report Data */
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Endpoint_Read_Stream_LE(&GenericData, sizeof(GenericData), NULL);
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/* Process Generic Report Data */
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ProcessGenericHIDReport(GenericData);
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}
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/* Finalize the stream transfer to send the last packet */
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Endpoint_ClearOUT();
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}
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Endpoint_SelectEndpoint(GENERIC_IN_EPADDR);
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/* Check to see if the host is ready to accept another packet */
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if (Endpoint_IsINReady())
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{
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/* Create a temporary buffer to hold the report to send to the host */
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uint8_t GenericData[GENERIC_REPORT_SIZE];
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/* Create Generic Report Data */
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CreateGenericHIDReport(GenericData);
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/* Write Generic Report Data */
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Endpoint_Write_Stream_LE(&GenericData, sizeof(GenericData), NULL);
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/* Finalize the stream transfer to send the last packet */
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Endpoint_ClearIN();
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}
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}
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