uartavr.h

含有完整TCP/IP PPP协议的嵌入式操作系统

#ifndef _DEV_UARTAVR_H_
#define _DEV_UARTAVR_H_

/*
 * Copyright (C) 2001-2005 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS 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.
 *
 * For additional information see http://www.ethernut.de/
 */

/*
 * $Log: uartavr.h,v $
 * Revision 1.7  2005/10/07 21:53:15  hwmaier
 * Obsolete dcb_baudSelect removed
 *
 * Revision 1.6  2005/07/26 15:49:59  haraldkipp
 * Cygwin support added.
 *
 * Revision 1.5  2005/06/26 12:40:59  chaac
 * Added support for raw mode to AHDLC driver.
 *
 * Revision 1.4  2005/02/10 07:06:51  hwmaier
 * Changes to incorporate support for AT90CAN128 CPU
 *
 * Revision 1.3  2004/06/21 10:40:25  freckle
 * Added *nix emulation uart definitions to uartavr.h and usartavr.h to
 * allow compilation of apps without adding #include <dev/unix.devs.h>
 *
 * Revision 1.2  2004/03/16 16:48:28  haraldkipp
 * Added Jan Dubiec's H8/300 port.
 *
 * Revision 1.1.1.1  2003/05/09 14:41:09  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.12  2003/05/06 18:44:45  harald
 * Handshakes added
 *
 * Revision 1.11  2003/03/31 14:53:24  harald
 * Prepare release 3.1
 *
 */

#include <sys/device.h>
#include <dev/uart.h>

/*!
 * \file dev/uartavr.h
 * \brief AVR on-chip UART definitions.
 */

/*!
 * \addtogroup xgUartAvr
 */
/*@{*/

#define UART_MF_RTSSENSE    0x00000001UL    /*!< DCE input, low on port bit is +12V, which means ON. */
#define UART_MF_CTSCONTROL  0x00000002UL    /*!< DCE output. */
#define UART_MF_DTRSENSE    0x00000004UL    /*!< DCE input. */
#define UART_MF_DSRCONTROL  0x00000008UL    /*!< DCE output. */
#define UART_MF_DCDCONTROL  0x00000010UL    /*!< DCE output. */

#define UART_MF_RTSCONTROL  0x00000020UL    /*!< DTE output. */
#define UART_MF_CTSSENSE    0x00000040UL    /*!< DTE input. */
#define UART_MF_DTRCONTROL  0x00000080UL    /*!< DTE output. */
#define UART_MF_DSRSENSE    0x00000100UL    /*!< DTE input. */
#define UART_MF_DCDSENSE    0x00000200UL    /*!< DTE input. */

#define UART_MF_SENSEMASK   0x0345	    /*!< Handshake sense mask. */
#define UART_MF_CONTROLMASK 0x00BC	    /*!< Handshake control mask. */

#define UART_MF_XONXOFF     0x00000400UL    /*!< Software handshake. */

#define UART_MF_LOCALECHO   0x00010000UL    /*!< Should be used in stream, not device. */
#define UART_MF_COOKEDMODE  0x00020000UL    /*!< Should be used in stream, not device. */

#define UART_MF_NOBUFFER    0x00100000UL    /*!< No buffering. */
#define UART_MF_LINEBUFFER  0x00200000UL    /*!< Line buffered. */
#define UART_MF_BUFFERMASK  0x00300000UL    /*!< Masks buffering mode flags. */

#define UART_MF_RAWMODE     0x00400000UL    /*!< Send data as raw, disables data encapsulation for device. */

#define UART_SF_RTSOFF	    0x00000001UL    /*!< Set RTS line is off. */
#define UART_SF_CTSOFF	    0x00000002UL    /*!< Set CTS line is off. */
#define UART_SF_DTROFF	    0x00000004UL    /*!< Set DTR line is off. */
#define UART_SF_DSROFF	    0x00000008UL    /*!< Set DSR line is off. */
#define UART_SF_DCDOFF	    0x00000010UL    /*!< Set DCD line is off. */

#define HDLC_SF_FLUSH	    0x00001000UL    /*!< Waiting for next HDLC flag. */
#define HDLC_SF_ESCAPED	    0x00002000UL    /*!< Next character escaped. */

#define UART_SF_TXDISABLED  0x00000040UL    /*!< Transmitter disabled. */
#define UART_SF_RXDISABLED  0x00000080UL    /*!< Receiver disabled. */


#define UART_HS_DCERTSCTS   0x00000003UL    /*!< RTS/CTS DCE handshake. */
#define UART_HS_DCEFULL	    0x0000001FUL    /*!< Full DCE handshake. */

#define UART_HS_DTERTSCTS   0x00000060UL    /*!< RTS/CTS DTE handshake. */
#define UART_HS_DTEFULL	    0x000003E0UL    /*!< Full DTE handshake. */

#define UART_HS_XONXOFF	    0x00000400UL    /*!< Software handshake. */


/*!
 * UART device control block type.
 */
typedef struct _UARTDCB UARTDCB;

/*!
 * \struct _UARTDCB uartavr.h dev/uartavr.h
 * \brief UART device control block structure.
 */
struct _UARTDCB {

    /*! \brief Read timeout.
     */
    u_long dcb_rtimeout;

    /*! \brief Write timeout.
     */
    u_long dcb_wtimeout;

    /*! \brief Queue of threads waiting for output buffer empty.
     *
     * Threads are added to this queue when calling UartAvrFlush().
     */
    HANDLE dcb_tx_rdy;

    /*! \brief Queue of threads waiting for a character in the input buffer.
     *
     * Threads are added to this queue when calling UartAvrInput().
     */
    HANDLE dcb_rx_rdy;

    /*! \brief Mode flags.
     */
    u_long dcb_modeflags;
};

/*@}*/

/*
 * Available devices.
 */
extern NUTDEVICE devUart0;
#ifdef __AVR_ENHANCED__
    extern NUTDEVICE devUart1;
#endif

#if defined(__linux__) || defined(__APPLE__) || defined(__CYGWIN__)
extern NUTDEVICE devUart0;
extern NUTDEVICE devUart1;
#endif

#endif