Programming Examples
Appendix B
B-19
set_mode.c file
/***************************************************************************
**
**
UBYTE set_mode (KTX_DUALPORT far * dp, UBYTE mode,
**
UBYTE trans_num, USHORT timeout)
**
**
This routine set the KTX scanner mode.
**
**
INPUTS
**
KTX_DUALPORT far *dp
– points to the base of the KTX dualport
**
UBYTE mode
– PROGRAM, TEST, or RUN mode
**
UBYTE trans_num
– transaction_number
**
USHORT timeout
– time (in seconds) to wait for completion
**
**
OUTPUT
**
UBYTE status
– completion status of the command
**
***************************************************************************/
#include ”ktx_dp.h”
/* 1784–KTX scanner dualport definition
*/
#include ”ktx_err.h”
/* 1784–KTX scanner error codes
*/
#include ”ktxconst.h”
/* 1784–KTX scanner constants
*/
UBYTE
set_mode (KTX_DUALPORT far *dp, UBYTE mode,
UBYTE trans_num, USHORT timeout)
{
UBYTE status;
/**** Initialize the command buffer ****/
dp–>cmd_buffer.host_command = SET_MODE;
dp–>cmd_buffer.transaction_num = trans_num;
dp–>cmd_buffer.command_length = 1;
dp–>cmd_buffer.cmd.set_mode.scanner_mode = mode;
/**** Send the command ****/
dp–>int_status_from_host = SCANNER_COMMAND_FROM_HOST;
dp–>host_to_ktx_int_reg = INTERRUPT_KTX;
/**** Get and acknowledge the confirmation ****/
status = get_confirmation(dp, trans_num, timeout);
if ((status != CONFIRMATION_TIMED_OUT) && (status != TRANS_NUM_MISMATCH))
acknowledge_confirmation(dp);
return status;
}
