Metrologic Optimus S Programming Manual page 115

com_cts
Purpose To get CTS level.
Syntax int com_cts (int port);
int port;
Example if (com_cts (1) == 0) printf ("COM 1 CTS is negated");
Description This routine checks the current CTS state on the direct RS-232 port.
Return If asserted, it returns 1 (i.e. mark).
Otherwise, it returns 0 (i.e. space).
See Also com_rts
com_rts
Purpose To set RTS level.
Syntax void com_rts (int port, int val);
int port;
int val;
Example com_rts (1, 1);
Description This routine controls the RTS signal. However, RTS might be changed by the
background routine according to the status of receive buffer.
None
Return
See Also com_cts
Chapter 3 Terminal Specific Function Library
else printf ("COM 1 CTS is asserted");
/* usually COM port 1 mapped to RS-232 */
/* usually COM port 1 mapped to RS-232 */
/* RTS signal is asserted(1) or negated(0) */
/* COM 1 is set as RTS asserted */
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