SAMV71 Xplained Ultra Software Package 1.4

CDCDSerialDriver.c

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00001 /* ----------------------------------------------------------------------------
00002  *         ATMEL Microcontroller Software Support
00003  * ----------------------------------------------------------------------------
00004  * Copyright (c) 2008, Atmel Corporation
00005  *
00006  * All rights reserved.
00007  *
00008  * Redistribution and use in source and binary forms, with or without
00009  * modification, are permitted provided that the following conditions are met:
00010  *
00011  * - Redistributions of source code must retain the above copyright notice,
00012  * this list of conditions and the disclaimer below.
00013  *
00014  * Atmel's name may not be used to endorse or promote products derived from
00015  * this software without specific prior written permission.
00016  *
00017  * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00019  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
00020  * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00022  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
00023  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00024  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00025  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
00026  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  * ----------------------------------------------------------------------------
00028  */
00029 
00030 /**\file
00031  *   Title: CDCDSerialDriver implementation
00032  *
00033  *   About: Purpose
00034  *       Implementation of the CDCDSerialDriver class methods.
00035  */
00036 
00037 /** \addtogroup usbd_cdc
00038  *@{
00039  */
00040 
00041 /*------------------------------------------------------------------------------
00042  *         Headers
00043  *------------------------------------------------------------------------------*/
00044 
00045 #include "CDCDSerialDriver.h"
00046 
00047 #include <USBLib_Trace.h>
00048 #include <USBDDriver.h>
00049 #include <USBD_HAL.h>
00050 
00051 /*------------------------------------------------------------------------------
00052  *         Types
00053  *------------------------------------------------------------------------------*/
00054 
00055 /*------------------------------------------------------------------------------
00056  *         Internal variables
00057  *------------------------------------------------------------------------------*/
00058 
00059 /*------------------------------------------------------------------------------
00060  *         Internal functions
00061  *------------------------------------------------------------------------------*/
00062 
00063 /*------------------------------------------------------------------------------
00064  *         Exported functions
00065  *------------------------------------------------------------------------------*/
00066 
00067 /**
00068  *  Initializes the USB Device CDC serial driver & USBD Driver.
00069  *  \param  pDescriptors Pointer to Descriptors list for CDC Serial Device.
00070  */
00071 void CDCDSerialDriver_Initialize(const USBDDriverDescriptors *pDescriptors)
00072 {
00073     USBDDriver *pUsbd = USBD_GetDriver();
00074 
00075     /* Initialize the standard driver */
00076     USBDDriver_Initialize(pUsbd,
00077                           pDescriptors,
00078                           0); /* Multiple settings for interfaces not supported */
00079 
00080     CDCDSerial_Initialize(pUsbd, CDCDSerialDriver_CC_INTERFACE);
00081 
00082     /* Initialize the USB driver */
00083     USBD_Init();
00084 }
00085 
00086 /**
00087  * Invoked whenever the active configuration of device is changed by the
00088  * host.
00089  * \param cfgnum Configuration number.
00090  */
00091 void CDCDSerialDriver_ConfigurationChangedHandler(uint8_t cfgnum)
00092 {
00093     USBDDriver *pUsbd = USBD_GetDriver();
00094     USBConfigurationDescriptor *pDesc;
00095     if (cfgnum) {
00096         pDesc = USBDDriver_GetCfgDescriptors(pUsbd, cfgnum);
00097         CDCDSerial_ConfigureFunction((USBGenericDescriptor *)pDesc,
00098                                       pDesc->wTotalLength);
00099     }
00100 }
00101 
00102 /**
00103  * Handles CDC-specific SETUP requests. Should be called from a
00104  * re-implementation of USBDCallbacks_RequestReceived() method.
00105  * \param request Pointer to a USBGenericRequest instance.
00106  */
00107 void CDCDSerialDriver_RequestHandler(const USBGenericRequest *request)
00108 {
00109     USBDDriver *pUsbd = USBD_GetDriver();
00110     TRACE_INFO_WP("NewReq ");
00111     if (CDCDSerial_RequestHandler(request))
00112         USBDDriver_RequestHandler(pUsbd, request);
00113 }
00114 
00115 /**@}*/
00116 
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