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4-12 Smartio C168H/HS User’s Manual
Syntax for SCO UNIX/OpenServer
#define MHWFLOW 0x40e
#define HWFlowControlOff 0x00
#define CTSFlowControlBitOn 0x01
#define RTSFlowControlBitOn 0x02
#define HWFlowControlOn 0x03
ioctl(moxa_fd, MHWFLOW, CTSFlowControlBitOn);
ioctl(moxa_fd, MHWFLOW, RTSFlowControlBitOn);
ioctl(moxa_fd,MHWFLOW, CTSFlowControlBitOn | RTSFlowControlBitOn);
Syntax for UNIX SVR4.2
#include <sys/stropts.h>
#include <sys/sysmacros.h>
#define MHWFLOW 0x40e
#define HWFlowControlOff 0x00
#define CTSFlowControlBitOn 0x01
#define RTSFlowControlBitOn 0x02
#define HWFlowControlOn 0x03
struct strioctl ioc;
int setting;
setting = CTSFlowControlbitOn;
ioc.ic_cmd = MHWFLOW;
ioc.ic_timout = 0;
ioc.ic_len = sizeof(int);
ioc.ic_dp = (char *)&setting;
ioctl(moxa_fd, I_STR, &ioc);