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FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation and modified by the FreeRTOS exception.
**NOTE** The exception to the GPL is included to allow you to distribute a
combined work that includes FreeRTOS without being obliged to provide the
source code for proprietary components outside of the FreeRTOS kernel.
Alternative commercial license and support terms are also available upon
request. See the licensing section of for full
license details.
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
Temple Place, Suite 330, Boston, MA 02111-1307 USA.
* *
* Looking for a quick start? Then check out the FreeRTOS eBook! *
* See for details *
* *
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Please ensure to read the configuration and relevant port sections of the
online documentation. - Documentation, latest information, license and
contact details. - A version that is certified for use in safety
critical systems. - Commercial support, development, porting,
licensing and training services.
#ifndef USB_CDC_H
#define USB_CDC_H
#include "usb.h"
#define USB_CDC_QUEUE_SIZE 200
/* Structure used to take a snapshot of the USB status from within the ISR. */
typedef struct X_ISR_STATUS
unsigned portLONG ulISR;
unsigned portLONG ulCSR0;
unsigned portCHAR ucFifoData[ 8 ];
} xISRStatus;
/* Structure used to hold the received requests. */
typedef struct
unsigned portCHAR ucReqType;
unsigned portCHAR ucRequest;
unsigned portSHORT usValue;
unsigned portSHORT usIndex;
unsigned portSHORT usLength;
typedef enum
/* Structure used to control the data being sent to the host. */
typedef struct
unsigned portCHAR ucBuffer[ usbMAX_CONTROL_MESSAGE_SIZE ];
unsigned portLONG ulNextCharIndex;
unsigned portLONG ulTotalDataLength;
void vUSBCDCTask( void *pvParameters );
/* Send cByte down the USB port. Characters are simply buffered and not
sent unless the port is connected. */
void vUSBSendByte( portCHAR cByte );