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annotate miscprog/pirbattextr.c @ 294:ff2a6433687f

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blobstat: code finished, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 21 Sep 2019 21:17:29 +0000
parents 30804198d5d0
children
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226
30804198d5d0 Pirelli's a_pwr_thresholds[] table found
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1 /*
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2 * This program extracts the a_pwr_thresholds[] table from one of Pirelli's
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3 * fw images and converts the numbers to decimal.
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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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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <unistd.h>
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11
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12 struct entry {
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13 u_char mvolt[2];
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14 u_char percent;
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15 u_char pad;
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16 };
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17
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18 struct entry array[21];
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19
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20 read_array_from_image(filename, offset_arg)
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21 char *filename, *offset_arg;
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22 {
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23 int fd;
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24
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25 fd = open(filename, O_RDONLY);
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26 if (fd < 0) {
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27 perror(filename);
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28 exit(1);
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29 }
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30 lseek(fd, strtoul(offset_arg, 0, 0), 0);
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31 read(fd, array, sizeof array);
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32 close(fd);
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33 }
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34
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35 dump_array()
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36 {
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37 int i;
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38 unsigned mvolt;
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39
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40 for (i = 0; i < 21; i++) {
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41 mvolt = array[i].mvolt[0] | (array[i].mvolt[1] << 8);
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42 printf("%4u\t%u\n", mvolt, array[i].percent);
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43 }
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44 }
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45
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46 main(argc, argv)
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47 char **argv;
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48 {
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49 if (argc != 3) {
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50 fprintf(stderr, "usage: %s fw-image offset\n", argv[0]);
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51 exit(1);
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52 }
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53 read_array_from_image(argv[1], argv[2]);
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54 dump_array();
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55 exit(0);
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56 }