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Smartio C168H/HS User’s Manual 4-9
setting = TurnON /* or TurnOFF */;
ioc.ic_cmd = MTCRTS;
ioc.ic_timout = 0;
ioc.ic_len = sizeof(int);
ioc.ic_dp = (char *)&setting;
ioctl(moxa_fd, I_STR, &ioc);
4. MTCDTR
This function, only valid when hardware flow control is turned off (see
MHWFLOW), is used to drive DTR signal on or off.
Syntax for SCO UNIX/OpenServer
#define MTCDTR 0x404
#define TurnON 1
#define TurnOFF 0
ioctl(moxa_fd, MTCDTR, TurnON);
ioctl(moxa_fd, MTCDTR, TurnOFF);
Syntax for UNIX SVR4.2
#include <sys/stropts.h>
#include <sys/sysmacros.h>
#define MTCDTR 0x404
#define TurnON 1
#define TurnOFF 0
struct strioctl ioc;
int setting;
setting = TurnON /* or TurnOFF */;
ioc.ic_cmd = MTCDTR;
ioc.ic_timout = 0;
ioc.ic_len = sizeof(int);
ioc.ic_dp = (char *)&setting;
ioctl(moxa_fd, I_STR, &ioc);
5. MLOWATER
Sometimes the application software may not be able to write any further data to the
output buffer because of the output buffer being full. The application has to wait