Intermec 5055 Reference Guide

This function transmits one byte of data out from the designated communications port.
This function is identical to MS-DOS INT 14H Service 01H.

#include "im5055.h"
IM_STATUS im_transmit_byte

    (IM_COM_PORT 

port_id

,

    IM_UCHAR

 transmit_byte)

;

The port_id parameter identifies the communications port as follows:

IM_COM1    COM1.

IM_COM2    COM2.

The transmit_byte parameter is the byte of data to transmit.

None.

This function returns one of the standard status codes defined in Appendix A, “Status
Codes.”

This function requires the PC standard protocol handler 

PHPCSTD.EXE

.

Intermec recommends using im_transmit_buffer (with a user_length of one) instead of
using im_transmit_byte.

You can use this function for an acknowledgement.

im_receive_byte, im_transmit_buffer

/******************** im_transmit_byte  ************************************/
/* Uses Borland _bio_serialcom or Microsoft _bios_serialcom  to init the   */
/* com port for single byte.                                               */
/* Operations. It sets up for 9600,E,7,1 on serial port                    */
/* Note: Phimec protocol handler must NOT be installed to run this routine */

#include <stdio.h>
#include <dos.h>
#include <conio.h>

#include <bios.h>
#include <string.h>
#include "im5055.h"
#include "immsg.h"

/* Byte oriented defines */
#define COM1       0