FreeCalypso > hg > freecalypso-sw

annotate loadtools/sercomm.c @ 48:38664e0b7c32

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fc-sertool renamed to fc-iram
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 23 Jun 2013 01:13:03 +0000
parents fea204bc7674
children 54392d1ea474
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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2 * This module handles the establishment of serial communication
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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3 * with the target, i.e., the host-side termios stuff.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/file.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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8 #include <sys/ioctl.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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9 #include <termios.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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10 #include <stdio.h>
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13
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14 char *target_ttydev;
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15 int target_fd;
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16 struct termios target_termios;
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17
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18 open_target_serial()
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19 {
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20 target_fd = open(target_ttydev, O_RDWR|O_NONBLOCK);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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21 if (target_fd < 0) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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22 perror(target_ttydev);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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23 exit(1);
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24 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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25 target_termios.c_iflag = IGNBRK;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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26 target_termios.c_oflag = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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27 target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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28 target_termios.c_lflag = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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29 target_termios.c_cc[VMIN] = 1;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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30 target_termios.c_cc[VTIME] = 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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31 /* start at B19200, as that's what we'll need to use initially */
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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32 cfsetispeed(&target_termios, B19200);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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33 cfsetospeed(&target_termios, B19200);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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34 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
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35 perror("initial tcsetattr on target");
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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36 exit(1);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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37 }
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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38 return 0;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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39 }
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40
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41 switch_baud_rate(code)
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42 {
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43 cfsetispeed(&target_termios, code);
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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44 cfsetospeed(&target_termios, code);
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45 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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46 perror("tcsetattr to switch baud rate");
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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47 exit(1);
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48 }
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49 }