CAS BI Series - Data Request Mode Programming Examples; Data Request Mode: BASIC Program Example; Data Request Mode: C-Language Program Example

Data request mode
If F-2 is set to 3, the indicator outputs the specified data when
ASCII code corresponding to "D" is sent to it.
*** Simple transmit/receive program(Language: BASIC)
10 OPEN "COM1: 9600, N, 8, 1" AS #1
20 IF LOC(1) = 0 THEN 60
30 A$ = INPUT$(1, 1)
40 PRINT A$; " " ;
50 GOTO 20
60 B$ = INKEY$ : IF B$ = " " THEN 20
70 PRINT B$ ; " ";
80 PRINT #1, B$
90 GOTO 20
*** Simple transmit/receive program( C-Language)
#include <bios.h>
#include <conio.h>
#define COM1 0
#define DATA_READY Ox100
#define TRUE 1
#define FALSE 0
#define SETTING ( 0x00 | 0xE0 | 0x00 | 0x03 )
int main(void)
{
int in, out, status, DONE = FALSE;
bioscom(0, SETTING, COM1);
cprintf(". . . BIOSCOM [ESC] to exit . . .\n);
while(!DONE)
{
status = bioscom(3, 0, COM1);
if (status & DATA_READY)
if (( out = bioscom(2, 0, COM1) & 0x7F) ! = 0)
putch(out);
if ( kbhit())
{
if ((in =getch()) == ' \x1B ')
DONE = TRUE;
bioscom(1, in, COM1);
}
}
return 0;
}
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