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Renamed main folder to firmware

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Christina Quast
2015-04-07 18:24:06 +02:00
parent f5cd7efede
commit 5a67c0fef3
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455
firmware/atmel_softpack_libraries/usb/device/cdc-serial/CDCDSerialPort.c Normal file
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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/**\file
* Implementation of the CDCDSerialPort class methods.
*/
/** \addtogroup usbd_cdc
*@{
*/
/*------------------------------------------------------------------------------
* Headers
*------------------------------------------------------------------------------*/
#include <CDCDSerialPort.h>
#include <CDCDescriptors.h>
#include <USBLib_Trace.h>
/*------------------------------------------------------------------------------
* Types
*------------------------------------------------------------------------------*/
/** Parse data extention for descriptor parsing */
typedef struct _CDCDParseData {
/** Pointer to CDCDSerialPort instance */
CDCDSerialPort * pCdcd;
/** Pointer to found interface descriptor */
USBInterfaceDescriptor * pIfDesc;
} CDCDParseData;
/*------------------------------------------------------------------------------
* Internal variables
*------------------------------------------------------------------------------*/
/** Line coding values */
static CDCLineCoding lineCoding;
/*------------------------------------------------------------------------------
* Internal functions
*------------------------------------------------------------------------------*/
/**
* Parse descriptors: Interface, Bulk IN/OUT, Interrupt IN.
* \param desc Pointer to descriptor list.
* \param arg Argument, pointer to AUDDParseData instance.
*/
static uint32_t _Interfaces_Parse(USBGenericDescriptor *pDesc,
CDCDParseData * pArg)
{
CDCDSerialPort *pCdcd = pArg->pCdcd;
/* Not a valid descriptor */
if (pDesc->bLength == 0)
return USBRC_PARAM_ERR;
/* Find interface descriptor */
if (pDesc->bDescriptorType == USBGenericDescriptor_INTERFACE) {
USBInterfaceDescriptor *pIf = (USBInterfaceDescriptor*)pDesc;
/* Obtain interface from descriptor */
if (pCdcd->bInterfaceNdx == 0xFF) {
/* First interface is communication */
if (pIf->bInterfaceClass ==
CDCCommunicationInterfaceDescriptor_CLASS) {
pCdcd->bInterfaceNdx = pIf->bInterfaceNumber;
pCdcd->bNumInterface = 2;
}
/* Only data interface */
else if(pIf->bInterfaceClass == CDCDataInterfaceDescriptor_CLASS) {
pCdcd->bInterfaceNdx = pIf->bInterfaceNumber;
pCdcd->bNumInterface = 1;
}
pArg->pIfDesc = pIf;
}
else if (pCdcd->bInterfaceNdx <= pIf->bInterfaceNumber
&& pCdcd->bInterfaceNdx + pCdcd->bNumInterface
> pIf->bInterfaceNumber) {
pArg->pIfDesc = pIf;
}
}
/* Parse valid interfaces */
if (pArg->pIfDesc == 0)
return 0;
/* Find endpoint descriptors */
if (pDesc->bDescriptorType == USBGenericDescriptor_ENDPOINT) {
USBEndpointDescriptor *pEp = (USBEndpointDescriptor*)pDesc;
switch(pEp->bmAttributes & 0x3) {
case USBEndpointDescriptor_INTERRUPT:
if (pEp->bEndpointAddress & 0x80)
pCdcd->bIntInPIPE = pEp->bEndpointAddress & 0x7F;
break;
case USBEndpointDescriptor_BULK:
if (pEp->bEndpointAddress & 0x80)
pCdcd->bBulkInPIPE = pEp->bEndpointAddress & 0x7F;
else
pCdcd->bBulkOutPIPE = pEp->bEndpointAddress;
}
}
if ( pCdcd->bInterfaceNdx != 0xFF
&& pCdcd->bBulkInPIPE != 0
&& pCdcd->bBulkOutPIPE != 0)
return USBRC_FINISHED;
return 0;
}
/**
* Callback function which should be invoked after the data of a
* SetLineCoding request has been retrieved. Sends a zero-length packet
* to the host for acknowledging the request.
* \param pCdcd Pointer to CDCDSerialPort instance.
*/
static void _SetLineCodingCallback(CDCDSerialPort * pCdcd)
{
uint32_t exec = 1;
if (pCdcd->fEventHandler) {
uint32_t rc = pCdcd->fEventHandler(
CDCDSerialPortEvent_SETLINECODING,
(uint32_t)(&lineCoding),
pCdcd->pArg);
if (rc == USBD_STATUS_SUCCESS) {
pCdcd->lineCoding.dwDTERate = lineCoding.dwDTERate;
pCdcd->lineCoding.bCharFormat = lineCoding.bCharFormat;
pCdcd->lineCoding.bParityType = lineCoding.bParityType;
pCdcd->lineCoding.bDataBits = lineCoding.bDataBits;
}
else
exec = 0;
}
if (exec) USBD_Write(0, 0, 0, 0, 0);
else USBD_Stall(0);
}
/**
* Receives new line coding information from the USB host.
* \param pCdcd Pointer to CDCDSerialPort instance.
*/
static void _SetLineCoding(CDCDSerialPort * pCdcd)
{
TRACE_INFO_WP("sLineCoding ");
USBD_Read(0,
(void *) & (lineCoding),
sizeof(CDCLineCoding),
(TransferCallback)_SetLineCodingCallback,
(void*)pCdcd);
}
/**
* Sends the current line coding information to the host through Control
* endpoint 0.
* \param pCdcd Pointer to CDCDSerialPort instance.
*/
static void _GetLineCoding(CDCDSerialPort * pCdcd)
{
TRACE_INFO_WP("gLineCoding ");
USBD_Write(0,
(void *) &(pCdcd->lineCoding),
sizeof(CDCLineCoding),
0,
0);
}
/**
* Changes the state of the serial driver according to the information
* sent by the host via a SetControlLineState request, and acknowledges
* the request with a zero-length packet.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param request Pointer to a USBGenericRequest instance.
*/
static void _SetControlLineState(
CDCDSerialPort * pCdcd,
const USBGenericRequest *request)
{
uint8_t DTR, RTS;
DTR = ((request->wValue & CDCControlLineState_DTR) > 0);
RTS = ((request->wValue & CDCControlLineState_RTS) > 0);
TRACE_INFO_WP("sControlLineState(%d, %d) ", DTR, RTS);
pCdcd->bControlLineState = (uint8_t)request->wValue;
USBD_Write(0, 0, 0, 0, 0);
if (pCdcd->fEventHandler)
pCdcd->fEventHandler(CDCDSerialPortEvent_SETCONTROLLINESTATE,
(uint32_t)pCdcd->bControlLineState,
pCdcd->pArg);
}
/*------------------------------------------------------------------------------
* Exported functions
*------------------------------------------------------------------------------*/
/**
* Initializes the USB Device CDC serial port function.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param pUsbd Pointer to USBDDriver instance.
* \param fEventHandler Pointer to event handler function.
* \param firstInterface First interface index for the function
* (0xFF to parse from descriptors).
* \param numInterface Number of interfaces for the function.
*/
void CDCDSerialPort_Initialize(CDCDSerialPort * pCdcd,
USBDDriver * pUsbd,
CDCDSerialPortEventHandler fEventHandler,
void * pArg,
uint8_t firstInterface,uint8_t numInterface)
{
TRACE_INFO("CDCDSerialPort_Initialize\n\r");
/* Initialize event handler */
pCdcd->fEventHandler = fEventHandler;
pCdcd->pArg = pArg;
/* Initialize USB Device Driver interface */
pCdcd->pUsbd = pUsbd;
pCdcd->bInterfaceNdx = firstInterface;
pCdcd->bNumInterface = numInterface;
pCdcd->bIntInPIPE = 0;
pCdcd->bBulkInPIPE = 0;
pCdcd->bBulkOutPIPE = 0;
/* Initialize Abstract Control Model attributes */
pCdcd->bControlLineState = 0;
pCdcd->wSerialState = 0;
CDCLineCoding_Initialize(&(pCdcd->lineCoding),
115200,
CDCLineCoding_ONESTOPBIT,
CDCLineCoding_NOPARITY,
8);
}
/**
* Parse CDC Serial Port information for CDCDSerialPort instance.
* Accepted interfaces:
* - Communication Interface + Data Interface
* - Data Interface ONLY
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param pDescriptors Pointer to descriptor list.
* \param dwLength Descriptor list size in bytes.
*/
USBGenericDescriptor *CDCDSerialPort_ParseInterfaces(
CDCDSerialPort *pCdcd,
USBGenericDescriptor *pDescriptors,
uint32_t dwLength)
{
CDCDParseData parseData;
parseData.pCdcd = pCdcd;
parseData.pIfDesc = 0;
return USBGenericDescriptor_Parse(
pDescriptors, dwLength,
(USBDescriptorParseFunction)_Interfaces_Parse,
&parseData);
}
/**
* Handles CDC-specific SETUP requests. Should be called from a
* re-implementation of USBDCallbacks_RequestReceived() method.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param request Pointer to a USBGenericRequest instance.
* \return USBRC_SUCCESS if request handled, otherwise error.
*/
uint32_t CDCDSerialPort_RequestHandler(
CDCDSerialPort *pCdcd,
const USBGenericRequest *request)
{
if (USBGenericRequest_GetType(request) != USBGenericRequest_CLASS)
return USBRC_PARAM_ERR;
TRACE_INFO_WP("Cdcs ");
/* Validate interface */
if (request->wIndex >= pCdcd->bInterfaceNdx &&
request->wIndex < pCdcd->bInterfaceNdx + pCdcd->bNumInterface) {
}
else {
return USBRC_PARAM_ERR;
}
/* Handle the request */
switch (USBGenericRequest_GetRequest(request)) {
case CDCGenericRequest_SETLINECODING:
_SetLineCoding(pCdcd);
break;
case CDCGenericRequest_GETLINECODING:
_GetLineCoding(pCdcd);
break;
case CDCGenericRequest_SETCONTROLLINESTATE:
_SetControlLineState(pCdcd, request);
break;
default:
return USBRC_PARAM_ERR;
}
return USBRC_SUCCESS;
}
/**
* Receives data from the host through the virtual COM port created by
* the CDC device serial driver. This function behaves like USBD_Read.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param pData Pointer to the data buffer to put received data.
* \param dwSize Size of the data buffer in bytes.
* \param fCallback Optional callback function to invoke when the transfer
* finishes.
* \param pArg Optional argument to the callback function.
* \return USBD_STATUS_SUCCESS if the read operation has been started normally;
* otherwise, the corresponding error code.
*/
uint32_t CDCDSerialPort_Read(const CDCDSerialPort * pCdcd,
void * pData,uint32_t dwSize,
TransferCallback fCallback,void * pArg)
{
if (pCdcd->bBulkOutPIPE == 0)
return USBRC_PARAM_ERR;
return USBD_Read(pCdcd->bBulkOutPIPE,
pData, dwSize,
fCallback, pArg);
}
/**
* Sends a data buffer through the virtual COM port created by the CDC
* device serial driver. This function behaves exactly like USBD_Write.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param pData Pointer to the data buffer to send.
* \param dwSize Size of the data buffer in bytes.
* \param fCallback Optional callback function to invoke when the transfer
* finishes.
* \param pArg Optional argument to the callback function.
* \return USBD_STATUS_SUCCESS if the read operation has been started normally;
* otherwise, the corresponding error code.
*/
uint32_t CDCDSerialPort_Write(const CDCDSerialPort * pCdcd,
void * pData, uint32_t dwSize,
TransferCallback fCallback, void * pArg)
{
if (pCdcd->bBulkInPIPE == 0)
return USBRC_PARAM_ERR;
return USBD_Write(pCdcd->bBulkInPIPE,
pData, dwSize,
fCallback, pArg);
}
/**
* Returns the current control line state of the RS-232 line.
* \param pCdcd Pointer to CDCDSerialPort instance.
*/
uint8_t CDCDSerialPort_GetControlLineState(const CDCDSerialPort * pCdcd)
{
return pCdcd->bControlLineState;
}
/**
* Copy current line coding settings to pointered space.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param pLineCoding Pointer to CDCLineCoding instance.
*/
void CDCDSerialPort_GetLineCoding(const CDCDSerialPort * pCdcd,
CDCLineCoding* pLineCoding)
{
if (pLineCoding) {
pLineCoding->dwDTERate = pCdcd->lineCoding.dwDTERate;
pLineCoding->bCharFormat = pCdcd->lineCoding.bCharFormat;
pLineCoding->bParityType = pCdcd->lineCoding.bParityType;
pLineCoding->bDataBits = pCdcd->lineCoding.bDataBits;
}
}
/**
* Returns the current status of the RS-232 line.
* \param pCdcd Pointer to CDCDSerialPort instance.
*/
uint16_t CDCDSerialPort_GetSerialState(const CDCDSerialPort * pCdcd)
{
return pCdcd->wSerialState;
}
/**
* Sets the current serial state of the device to the given value.
* \param pCdcd Pointer to CDCDSerialPort instance.
* \param wSerialState New device state.
*/
void CDCDSerialPort_SetSerialState(CDCDSerialPort * pCdcd,
uint16_t wSerialState)
{
if (pCdcd->bIntInPIPE == 0)
return;
/* If new state is different from previous one, send a notification to the
host */
if (pCdcd->wSerialState != wSerialState) {
pCdcd->wSerialState = wSerialState;
USBD_Write(pCdcd->bIntInPIPE,
&(pCdcd->wSerialState),
2,
0,
0);
/* Reset one-time flags */
pCdcd->wSerialState &= ~(CDCSerialState_OVERRUN
| CDCSerialState_PARITY
| CDCSerialState_FRAMING
| CDCSerialState_RINGSIGNAL
| CDCSerialState_BREAK);
}
}
/**@}*/