61 lines
1,007 B
C
61 lines
1,007 B
C
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <linux/termios.h>
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int ioctl(int d, int request, ...);
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int set_baud (char *devfile, int baud);
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int set_baud(char *devfile, int baud)
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{
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#ifndef __linux__
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return 0;
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#endif
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struct termios2 t;
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int fd;
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fd = open(devfile, O_RDWR | O_NOCTTY | O_NDELAY);
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if (fd == -1)
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{
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fprintf(stderr, "error opening %s: %s", devfile, strerror(errno));
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return 2;
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}
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if (ioctl(fd, TCGETS2, &t))
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{
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perror("TCGETS2");
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return 3;
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}
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printf("SetSerial: Reported speed before update %d\n", t.c_ospeed);
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t.c_cflag &= ~CBAUD;
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t.c_cflag |= BOTHER;
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t.c_ispeed = baud;
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t.c_ospeed = baud;
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if (ioctl(fd, TCSETS2, &t))
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{
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perror("TCSETS2");
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return 4;
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}
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if (ioctl(fd, TCGETS2, &t))
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{
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perror("TCGETS2");
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return 5;
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}
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//close(fd);
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printf("SetSerial: Reported speed after update %d\n", t.c_ospeed);
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return 0;
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}
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