FreeCalypso > hg > fc-usbser-tools

annotate fteeprom/read_eeprom_image.c @ 69:065f68a94b6b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/FTDI-EEPROM-format: beginning of article
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 14 Sep 2023 23:56:25 +0000
parents ca2250b4833d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
20
43b8e88dae02 fteeprom-prog: convert to new local libs
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
1 /*
64
ca2250b4833d fteeprom: factor out EEPROM image reading functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
2 * This module implements functions for reading FTDI EEPROM images
ca2250b4833d fteeprom: factor out EEPROM image reading functions
Mychaela Falconia <falcon@freecalypso.org>
parents: 45
diff changeset
3 * from a file or from stdin.
20
43b8e88dae02 fteeprom-prog: convert to new local libs
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
4 */
43b8e88dae02 fteeprom-prog: convert to new local libs
Mychaela Falconia <falcon@freecalypso.org>
parents: 0
diff changeset
5
0
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/types.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <ctype.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <string.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <strings.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <stdio.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <stdlib.h>
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 unsigned eeprom_size;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 u_short eeprom[256];
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 read_eeprom_common(inf, filename_for_errs)
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 FILE *inf;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 char *filename_for_errs;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 char linebuf[1024], *cp;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 int lineno, rc;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 unsigned ptr = 0, input_off;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 for (cp = linebuf; isspace(*cp); cp++)
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 ;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 if (*cp == '\0' || *cp == '#')
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 continue;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 if (ptr >= 256) {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 fprintf(stderr,
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 "%s line %d: maximum EEPROM size exceeded\n",
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 filename_for_errs, lineno);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 exit(1);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 rc = sscanf(linebuf, "%x: %hx %hx %hx %hx %hx %hx %hx %hx",
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 &input_off, eeprom + ptr, eeprom + ptr + 1,
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 eeprom + ptr + 2, eeprom + ptr + 3,
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 eeprom + ptr + 4, eeprom + ptr + 5,
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 eeprom + ptr + 6, eeprom + ptr + 7);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 if (rc != 9 || input_off != ptr * 2) {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 fprintf(stderr, "%s line %d: invalid input\n",
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 filename_for_errs, lineno);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 exit(1);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 ptr += 8;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 if (ptr != 64 && ptr != 128 && ptr != 256) {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 fprintf(stderr, "%s: not an EEPROM image of recognized size\n",
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 filename_for_errs);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 exit(1);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 eeprom_size = ptr;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 read_eeprom_from_file(filename)
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 char *filename;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 FILE *inf;
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 inf = fopen(filename, "r");
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 if (!inf) {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 perror(filename);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 exit(1);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 read_eeprom_common(inf, filename);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 fclose(inf);
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 }
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 read_eeprom_from_stdin()
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 {
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 read_eeprom_common(stdin, "stdin");
11b8a30333b3 fteeprom: initial import from freecalypso-hwlab
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 }