143 lines
5.9 KiB
C
143 lines
5.9 KiB
C
/*
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* Copyright (c) 2003, Groepaz/Hitmen.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* rs232silversurfer.h
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*
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* Groepaz/Hitmen, 16.12.2001
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*
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* This defines for the SilverSurver (16c550 UART) what Ullrichs rs232 module
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* defines for the Swithlink/Turbo232
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*
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* this driver operates in polling mode only atm !
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*
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*/
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#ifndef _RS232silversurfer_H
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#define _RS232silversurfer_H
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Baudrate settings */
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#define RS_BAUD_50 0x00
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#define RS_BAUD_110 0x10
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#define RS_BAUD_134_5 0x20
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#define RS_BAUD_300 0x30
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#define RS_BAUD_600 0x40
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#define RS_BAUD_1200 0x50
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#define RS_BAUD_2400 0x60
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#define RS_BAUD_4800 0x70
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#define RS_BAUD_9600 0x80
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#define RS_BAUD_19200 0x90
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#define RS_BAUD_38400 0xa0
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#define RS_BAUD_57600 0xb0
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#define RS_BAUD_115200 0xc0
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#define RS_BAUD_230400 0xd0
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/* Stop bit settings */
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#define RS_STOP_1 0x00
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#define RS_STOP_2 0x04
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/* Data bit settings */
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#define RS_BITS_5 0x00
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#define RS_BITS_6 0x01
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#define RS_BITS_7 0x02
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#define RS_BITS_8 0x03
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/* Parity settings */
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#define RS_PAR_NONE 0x00
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#define RS_PAR_ODD 0x28
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#define RS_PAR_EVEN 0x38
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#define RS_PAR_MARK 0x48
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#define RS_PAR_SPACE 0x48
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/* Bit masks to mask out things from the status returned by rs232_status */
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#define RS_STATUS_IRQ 0x01 /* (iir) IRQ condition */
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#define RS_STATUS_OVERRUN 0x02 /* (lsr) Overrun error */
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#define RS_STATUS_PE 0x04 /* (lsr) Parity error */
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#define RS_STATUS_FE 0x08 /* (lsr) Framing error */
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#define RS_STATUS_DSR 0x10 /* (msr>>1) NOT data set ready */
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#define RS_STATUS_THRE 0x20 /* (lsr) Transmit holding reg. empty */
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#define RS_STATUS_DCD 0x40 /* (msr>>1) NOT data carrier detect */
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#define RS_STATUS_RDRF 0x80 /* Receiver data register full */
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/* Error codes returned by all functions */
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#define RS_ERR_OK 0x00 /* Not an error - relax */
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#define RS_ERR_NOT_INITIALIZED 0x01 /* Module not initialized */
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#define RS_ERR_BAUD_TOO_FAST 0x02 /* Cannot handle baud rate */
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#define RS_ERR_BAUD_NOT_AVAIL 0x03 /* Baud rate not available */
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#define RS_ERR_NO_DATA 0x04 /* Nothing to read */
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#define RS_ERR_OVERFLOW 0x05 /* No room in send buffer */
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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unsigned char __fastcall__ rs232_init (char hacked);
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/* Initialize the serial port, install the interrupt handler. The parameter
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* has no effect for now and should be set to 0.
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*/
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unsigned char __fastcall__ rs232_params (unsigned char params, unsigned char parity);
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/* Set the port parameters. Use a combination of the #defined values above. */
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unsigned char __fastcall__ rs232_done (void);
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/* Close the port, deinstall the interrupt hander. You MUST call this function
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* before terminating the program, otherwise the machine may crash later. If
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* in doubt, install an exit handler using atexit(). The function will do
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* nothing, if it was already called.
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*/
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unsigned char __fastcall__ rs232_get (char* b);
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/* Get a character from the serial port. If no characters are available, the
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* function will return RS_ERR_NO_DATA, so this is not a fatal error.
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*/
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unsigned char __fastcall__ rs232_put (char b);
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/* Send a character via the serial port. There is a transmit buffer, but
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* transmitting is not done via interrupt. The function returns
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* RS_ERR_OVERFLOW if there is no space left in the transmit buffer.
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*/
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unsigned char __fastcall__ rs232_pause (void);
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/* Assert flow control and disable interrupts. */
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unsigned char __fastcall__ rs232_unpause (void);
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/* Re-enable interrupts and release flow control */
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unsigned char __fastcall__ rs232_status (unsigned char* status,
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unsigned char* errors);
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/* Return the serial port status. */
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/* End of rs232silversurfer.h */
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#endif
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