IBASE Technology RP-103-SMC User Manual page 94

7. RS-485 Test
//open ttymxc1
fd = open(/dev/ttymxc1,O_RDWR );
//set speed
tcgetattr(fd, &opt);
cfsetispeed(&opt, speed);
cfsetospeed(&opt, speed);
tcsetattr(fd, TCSANOW, &opt
//get_speed
tcgetattr(fd, &opt);
speed = cfgetispeed(&opt);
//set_parity
// options.c_cflag
options.c_cflag &= ~CSIZE;
options.c_cflag &= ~CSIZE;
options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
/*Input*/
options.c_oflag &= ~OPOST;
//options.c_cc
options.c_cc[VTIME] = 150;
options.c_cc[VMIN] = 0;
#set parity
tcsetattr(fd, TCSANOW, &options)
//write ttymxc1
write(fd, write_buf, sizeof(write_buf));
//read ttymxc1
read(fd, read_buf, sizeof(read_buf)))
86
/*Output*/
RP-103-SMC User Manual