Add new CDCMouse ClassDriver device demo, combining a CDC Virtual Serial Port and a HID Mouse.
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Dean Camera
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17 changed files with 3199 additions and 8 deletions
235
Demos/Device/ClassDriver/CDCMouse/CDCMouse.c
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Demos/Device/ClassDriver/CDCMouse/CDCMouse.c
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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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 disclaim 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 CDCMouse demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "CDCMouse.h"
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/** LUFA CDC Class driver interface configuration and state information. This structure is
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* passed to all CDC Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
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{
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.Config =
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{
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.ControlInterfaceNumber = 0,
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.DataINEndpointNumber = CDC_TX_EPNUM,
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.DataINEndpointSize = CDC_TXRX_EPSIZE,
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.DataOUTEndpointNumber = CDC_RX_EPNUM,
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.DataOUTEndpointSize = CDC_TXRX_EPSIZE,
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.NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,
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.NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,
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},
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};
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/** Buffer to hold the previously generated Mouse HID report, for comparison purposes inside the HID class driver. */
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uint8_t PrevMouseHIDReportBuffer[sizeof(USB_MouseReport_Data_t)];
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/** LUFA HID Class driver interface configuration and state information. This structure is
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* passed to all HID Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_HID_Device_t Mouse_HID_Interface =
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{
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.Config =
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{
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.InterfaceNumber = 0,
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.ReportINEndpointNumber = MOUSE_EPNUM,
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.ReportINEndpointSize = MOUSE_EPSIZE,
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.PrevReportINBuffer = PrevMouseHIDReportBuffer,
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.PrevReportINBufferSize = sizeof(PrevMouseHIDReportBuffer),
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},
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};
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/** Main program entry point. This routine contains the overall program flow, including initial
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* setup of all components and the main program loop.
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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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for (;;)
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{
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CheckJoystickMovement();
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/* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
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while (CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
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CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
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CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
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HID_Device_USBTask(&Mouse_HID_Interface);
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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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/* 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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/* Hardware Initialization */
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Joystick_Init();
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LEDs_Init();
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USB_Init();
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}
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/** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
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void CheckJoystickMovement(void)
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{
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uint8_t JoyStatus_LCL = Joystick_GetStatus();
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char* ReportString = NULL;
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static bool ActionSent = false;
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if (JoyStatus_LCL & JOY_UP)
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ReportString = "Joystick Up\r\n";
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else if (JoyStatus_LCL & JOY_DOWN)
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ReportString = "Joystick Down\r\n";
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else if (JoyStatus_LCL & JOY_LEFT)
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ReportString = "Joystick Left\r\n";
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else if (JoyStatus_LCL & JOY_RIGHT)
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ReportString = "Joystick Right\r\n";
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else if (JoyStatus_LCL & JOY_PRESS)
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ReportString = "Joystick Pressed\r\n";
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else
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ActionSent = false;
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if ((ReportString != NULL) && (ActionSent == false))
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{
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ActionSent = true;
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CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString));
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}
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}
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/** Event handler for the library USB Connection event. */
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void EVENT_USB_Device_Connect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the library USB Disconnection event. */
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void EVENT_USB_Device_Disconnect(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the library USB Configuration Changed event. */
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void EVENT_USB_Device_ConfigurationChanged(void)
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{
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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if (!(HID_Device_ConfigureEndpoints(&Mouse_HID_Interface)))
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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USB_Device_EnableSOFEvents();
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}
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/** Event handler for the library USB Unhandled Control Request event. */
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void EVENT_USB_Device_UnhandledControlRequest(void)
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{
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CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
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HID_Device_ProcessControlRequest(&Mouse_HID_Interface);
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}
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/** Event handler for the USB device Start Of Frame event. */
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void EVENT_USB_Device_StartOfFrame(void)
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{
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HID_Device_MillisecondElapsed(&Mouse_HID_Interface);
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}
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/** HID class driver callback function for the creation of HID reports to the host.
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*
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* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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* \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
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* \param[out] ReportData Pointer to a buffer where the created report should be stored
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* \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent
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*
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* \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
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*/
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bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
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void* ReportData, uint16_t* ReportSize)
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{
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USB_MouseReport_Data_t* MouseReport = (USB_MouseReport_Data_t*)ReportData;
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uint8_t JoyStatus_LCL = Joystick_GetStatus();
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uint8_t ButtonStatus_LCL = Buttons_GetStatus();
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if (JoyStatus_LCL & JOY_UP)
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MouseReport->Y = -1;
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else if (JoyStatus_LCL & JOY_DOWN)
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MouseReport->Y = 1;
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if (JoyStatus_LCL & JOY_RIGHT)
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MouseReport->X = 1;
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else if (JoyStatus_LCL & JOY_LEFT)
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MouseReport->X = -1;
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if (JoyStatus_LCL & JOY_PRESS)
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MouseReport->Button = (1 << 0);
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if (ButtonStatus_LCL & BUTTONS_BUTTON1)
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MouseReport->Button |= (1 << 1);
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*ReportSize = sizeof(USB_MouseReport_Data_t);
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return true;
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}
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/** HID class driver callback function for the processing of HID reports from the host.
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*
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* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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* \param[in] ReportID Report ID of the received report from the host
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* \param[in] ReportData Pointer to a buffer where the created report has been stored
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* \param[in] ReportSize Size in bytes of the received HID report
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*/
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void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
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const void* ReportData, const uint16_t ReportSize)
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{
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// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
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}
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