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278 lines
9.3 KiB
C
278 lines
9.3 KiB
C
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/** \file
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* \addtogroup usbd_hid_mouse
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*@{
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*/
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/*------------------------------------------------------------------------------
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* Headers
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*------------------------------------------------------------------------------*/
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#include <HIDDFunction.h>
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#include <HIDDMouseDriver.h>
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#include <USBD.h>
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#include <USBD_HAL.h>
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#include <USBDDriver.h>
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#include <USBLib_Trace.h>
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/*------------------------------------------------------------------------------
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* Internal Defines
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*------------------------------------------------------------------------------*/
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/** Tag bit (Always 1) */
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#define HIDDMouse_TAG (1 << 3)
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/** Xsign bit */
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#define HIDDMouse_Xsign (1 << 4)
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/** Ysign bit */
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#define HIDDMouse_Ysign (1 << 5)
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/*------------------------------------------------------------------------------
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* Internal types
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*------------------------------------------------------------------------------*/
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/**
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* Struct for an HID Mouse report.
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*/
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typedef struct _HIDDMouseReport {
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/** Callback when report done */
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HIDDReportEventCallback fCallback;
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/** Callback arguments */
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void* pArg;
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/** Report size (ID + DATA) */
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uint16_t wMaxSize;
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/** Transfered size */
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uint16_t wTransferred;
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/** Report idle rate */
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uint8_t bIdleRate;
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/** Delay count for Idle */
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uint8_t bDelay;
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/** Report ID */
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uint8_t bID;
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/** Report data block */
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HIDDMouseInputReport report;
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} HIDDMouseReport;
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/**
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* Driver structure for an HID device implementing keyboard functionalities.
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*/
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typedef struct _HIDDMouseDriver {
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/** Mouse function instance */
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HIDDFunction hidDrv;
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/** Mouse input report */
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HIDDReport *inputReports[1];
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} HIDDMouseDriver;
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/*------------------------------------------------------------------------------
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* Internal variables
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*------------------------------------------------------------------------------*/
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/** Static instance of the HID mouse device driver. */
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static HIDDMouseDriver hiddMouseDriver;
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/** Input report */
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static HIDDMouseReport hiddInputReport;
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/** Report descriptor used by the driver. */
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static const uint8_t hiddReportDescriptor[] = {
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/* Global Usage Page */
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HIDReport_GLOBAL_USAGEPAGE + 1, HIDGenericDesktop_PAGEID,
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/* Collection: Application */
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HIDReport_LOCAL_USAGE + 1, HIDGenericDesktop_MOUSE,
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HIDReport_COLLECTION + 1, HIDReport_COLLECTION_APPLICATION,
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/* Physical collection: Pointer */
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HIDReport_LOCAL_USAGE + 1, HIDGenericDesktop_POINTER,
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HIDReport_COLLECTION + 1, HIDReport_COLLECTION_PHYSICAL,
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/* Input report: buttons */
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HIDReport_GLOBAL_USAGEPAGE + 1, HIDButton_PAGEID,
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HIDReport_GLOBAL_REPORTCOUNT + 1, 3,
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HIDReport_GLOBAL_REPORTSIZE + 1, 1,
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HIDReport_LOCAL_USAGEMINIMUM + 1, 1,
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HIDReport_LOCAL_USAGEMAXIMUM + 1, 3,
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HIDReport_GLOBAL_LOGICALMINIMUM + 1, 0,
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HIDReport_GLOBAL_LOGICALMAXIMUM + 1, 1,
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HIDReport_INPUT + 1, HIDReport_VARIABLE, /* 3 button bits */
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/* Input report: padding */
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HIDReport_GLOBAL_REPORTCOUNT + 1, 1,
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HIDReport_GLOBAL_REPORTSIZE + 1, 5,
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HIDReport_INPUT + 1, HIDReport_CONSTANT, /* 5 bit padding */
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/* Input report: pointer */
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HIDReport_GLOBAL_USAGEPAGE + 1, HIDGenericDesktop_PAGEID,
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HIDReport_GLOBAL_REPORTSIZE + 1, 8,
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HIDReport_GLOBAL_REPORTCOUNT + 1, 2,
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HIDReport_LOCAL_USAGE + 1, HIDGenericDesktop_X,
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HIDReport_LOCAL_USAGE + 1, HIDGenericDesktop_Y,
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HIDReport_GLOBAL_LOGICALMINIMUM + 1, (uint8_t) -127,
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HIDReport_GLOBAL_LOGICALMAXIMUM + 1, 127,
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HIDReport_INPUT + 1, HIDReport_VARIABLE | HIDReport_RELATIVE,
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HIDReport_ENDCOLLECTION,
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HIDReport_ENDCOLLECTION
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};
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/*------------------------------------------------------------------------------
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* Internal functions
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*------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------
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* Exported functions
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*------------------------------------------------------------------------------*/
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/**
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* Initializes the HID Mouse %device driver.
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* \param pDescriptors Pointer to descriptor list for the HID Mouse.
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*/
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void HIDDMouseDriver_Initialize(const USBDDriverDescriptors *pDescriptors)
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{
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HIDDMouseDriver* pMouse = &hiddMouseDriver;
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HIDDFunction* pHidd = &pMouse->hidDrv;
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USBDDriver* pUsbd = USBD_GetDriver();
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/* One input report */
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pMouse->inputReports[0] = (HIDDReport*)&hiddInputReport;
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HIDDFunction_InitializeReport(pMouse->inputReports[0],
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HIDDMouseDriver_REPORTDESCRIPTORSIZE,
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0,
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0, 0);
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/* Initialize USBD Driver instance */
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USBDDriver_Initialize(pUsbd,
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pDescriptors,
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0); /* Multiple interface settings not supported */
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/* Function initialize */
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HIDDFunction_Initialize(pHidd,
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pUsbd, 0,
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hiddReportDescriptor,
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(HIDDReport**)(&pMouse->inputReports), 1,
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0, 0);
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USBD_Init();
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}
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/**
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* Handles configureation changed event.
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* \param cfgnum New configuration number
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*/
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void HIDDMouseDriver_ConfigurationChangedHandler(uint8_t cfgnum)
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{
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HIDDMouseDriver * pMouse = &hiddMouseDriver;
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HIDDFunction * pHidd = &pMouse->hidDrv;
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USBDDriver * pUsbd = pHidd->pUsbd;
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USBConfigurationDescriptor *pDesc;
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if (cfgnum > 0) {
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/* Parse endpoints for reports */
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pDesc = USBDDriver_GetCfgDescriptors(pUsbd, cfgnum);
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HIDDFunction_ParseInterface(pHidd,
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(USBGenericDescriptor*)pDesc,
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pDesc->wTotalLength);
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}
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}
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/**
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* Handles HID-specific SETUP request sent by the host.
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* \param request Pointer to a USBGenericRequest instance
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*/
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void HIDDMouseDriver_RequestHandler(const USBGenericRequest *request)
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{
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HIDDMouseDriver * pMouse = &hiddMouseDriver;
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HIDDFunction * pHidd = &pMouse->hidDrv;
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USBDDriver * pUsbd = pHidd->pUsbd;
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TRACE_INFO("NewReq ");
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/* Process HID requests */
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if (USBRC_SUCCESS == HIDDFunction_RequestHandler(pHidd,
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request)) {
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return;
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}
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/* Process STD requests */
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else {
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USBDDriver_RequestHandler(pUsbd, request);
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}
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}
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/**
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* Update the Mouse button status and location changes via input report
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* to host
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* \param bmButtons Bit map of the button status
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* \param deltaX Movment on X direction
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* \param deltaY Movment on Y direction
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*/
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uint8_t HIDDMouseDriver_ChangePoints(uint8_t bmButtons,
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int8_t deltaX,
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int8_t deltaY)
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{
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HIDDMouseDriver * pMouse = &hiddMouseDriver;
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HIDDFunction * pHidd = &pMouse->hidDrv;
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HIDDMouseInputReport * pReport = &hiddInputReport.report;
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pReport->bmButtons = (bmButtons & 0x07) | HIDDMouse_TAG;
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pReport->bX = deltaX;
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pReport->bY = deltaY;
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/* Send input report through the interrupt IN endpoint */
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return USBD_Write(pHidd->bPipeIN,
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(void*)pReport,
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sizeof(HIDDMouseInputReport),
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0,
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0);
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}
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/**
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* Starts a remote wake-up sequence if the host has explicitely enabled it
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* by sending the appropriate SET_FEATURE request.
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*/
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void HIDDMouseDriver_RemoteWakeUp(void)
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{
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HIDDMouseDriver * pMouse = &hiddMouseDriver;
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HIDDFunction * pHidd = &pMouse->hidDrv;
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USBDDriver * pUsbd = pHidd->pUsbd;
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/* Remote wake-up has been enabled */
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if (USBDDriver_IsRemoteWakeUpEnabled(pUsbd)) {
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USBD_RemoteWakeUp();
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}
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}
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/**@}*/
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