FreeCalypso > hg > freecalypso-tools

annotate loadtools/labaud.c @ 585:d3e2b23ebf1d

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doc/Target-boot-control: finished for now
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 03 Feb 2020 05:22:21 +0000
parents 8c011177adb9
children
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1 /*
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2 * This module handles the switching of serial baud rates
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3 * in coordination with loadagent.
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4 */
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5
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <unistd.h>
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9 #include "../libserial/baudrate.h"
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11 extern int target_fd;
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12 extern struct baudrate *current_baud_rate;
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13 extern struct baudrate *find_baudrate_by_name();
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15 loadagent_switch_baud(newbr)
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16 struct baudrate *newbr;
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17 {
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18 char *argv[3];
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19 static char U = 'U';
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21 printf("Switching loadagent communication to %s baud\n", newbr->name);
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22 argv[0] = "baud";
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23 argv[1] = newbr->name;
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24 argv[2] = 0;
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25 tpinterf_make_cmd(argv);
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26 if (tpinterf_send_cmd() < 0)
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27 return(-1);
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28 set_serial_baudrate(newbr);
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29 usleep(150000);
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30 write(target_fd, &U, 1);
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31 return tpinterf_pass_output(1);
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32 }
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33
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34 cmd_baud(argc, argv)
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35 char **argv;
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36 {
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37 struct baudrate *br;
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38
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39 if (argc < 2) {
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40 printf("Current baud rate is %s\n", current_baud_rate->name);
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41 return(0);
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42 }
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43 br = find_baudrate_by_name(argv[1]);
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44 if (!br)
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45 return(-1); /* error msg already printed */
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46 return loadagent_switch_baud(br);
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47 }