FreeCalypso > hg > freecalypso-reveng

annotate miscprog/pircksum.c @ 344:2bd27d940023

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fluid-mnf/serial.c: serial_recv() implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 13 Mar 2020 05:53:20 +0000
parents bf4286245c74
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
181
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 * This program has been used to verify and refine my understanding of the
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 * checksum scheme used for Pirelli's RF calibration data.
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 */
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 #include <sys/types.h>
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 #include <stdio.h>
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 #include <stdlib.h>
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 main(argc, argv)
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 char **argv;
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12 {
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 FILE *f;
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 u_long offset, len;
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 u_char inb, accum;
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 if (argc != 4) {
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 fprintf(stderr, "usage: %s fact.bin offset len\n", argv[0]);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 exit(1);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 }
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 f = fopen(argv[1], "r");
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 if (!f) {
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 perror(argv[1]);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 exit(1);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 }
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 offset = strtoul(argv[2], 0, 16);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27 len = strtoul(argv[3], 0, 16);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 fseek(f, offset, SEEK_SET);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 for (accum = 0; len; len--) {
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 inb = getc(f);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 accum += inb;
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 }
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 inb = getc(f);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 printf("Computed cksum %02X, following byte %02X\n", accum, inb);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 exit(0);
bf4286245c74 Pirelli's RF calibration cracked
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 }