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comparison fteeprom/ftee-gen2232c.c @ 31:16b625911e19

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fteeprom: generalization of previous ee2232 tools
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 21 Apr 2019 04:14:00 +0000
parents
children ae48b7d69744
comparison
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30:56780c191b58 31:16b625911e19
1 #include <sys/types.h>
2 #include <ctype.h>
3 #include <string.h>
4 #include <strings.h>
5 #include <stdio.h>
6 #include <stdlib.h>
7
8 u_short vid = 0x0403, pid = 0x6010;
9 char *manuf, *product;
10 u_char byte00 = 0x08, byte01 = 0x08;
11 u_char byte08 = 0x80, byte0A = 0x00;
12 unsigned maxpower = 100;
13 u_short usb_version = 0x0200;
14
15 u_short eeprom[64];
16 unsigned eeprom_string_ptr = 0x0B;
17
18 read_config_file(filename)
19 char *filename;
20 {
21 FILE *inf;
22 char linebuf[1024];
23 int lineno;
24 char *cp, *np;
25
26 inf = fopen(filename, "r");
27 if (!inf) {
28 perror(filename);
29 exit(1);
30 }
31 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
32 cp = index(linebuf, '\n');
33 if (!cp) {
34 fprintf(stderr,
35 "%s line %d: too long or unterminated\n",
36 filename, lineno);
37 exit(1);
38 }
39 *cp = '\0';
40 for (cp = linebuf; isspace(*cp); cp++)
41 ;
42 if (*cp == '\0' || *cp == '#')
43 continue;
44 for (np = cp; *cp && !isspace(*cp); cp++)
45 ;
46 if (*cp)
47 *cp++ = '\0';
48 while (isspace(*cp))
49 cp++;
50 if (*cp == '\0' || *cp == '#') {
51 fprintf(stderr,
52 "%s line %d: \"%s\" setting without argument\n",
53 filename, lineno, np);
54 exit(1);
55 }
56 if (!strcmp(np, "vid"))
57 vid = strtoul(cp, 0, 16);
58 else if (!strcmp(np, "pid"))
59 pid = strtoul(cp, 0, 16);
60 else if (!strcmp(np, "manuf"))
61 manuf = strdup(cp);
62 else if (!strcmp(np, "product"))
63 product = strdup(cp);
64 else if (!strcmp(np, "byte00"))
65 byte00 = strtoul(cp, 0, 16);
66 else if (!strcmp(np, "byte01"))
67 byte01 = strtoul(cp, 0, 16);
68 else if (!strcmp(np, "byte08"))
69 byte08 = strtoul(cp, 0, 16);
70 else if (!strcmp(np, "byte0A"))
71 byte0A = strtoul(cp, 0, 16);
72 else if (!strcmp(np, "maxpower"))
73 maxpower = strtoul(cp, 0, 10);
74 else if (!strcmp(np, "usbver"))
75 usb_version = strtoul(cp, 0, 16);
76 else {
77 fprintf(stderr, "%s line %d: unknown \"%s\" setting\n",
78 filename, lineno, np);
79 exit(1);
80 }
81 }
82 fclose(inf);
83 if (!manuf) {
84 fprintf(stderr, "error: manuf not set in %s\n", filename);
85 exit(1);
86 }
87 if (!product) {
88 fprintf(stderr, "error: product not set in %s\n", filename);
89 exit(1);
90 }
91 }
92
93 write_string(str)
94 char *str;
95 {
96 unsigned longlen, startptr;
97
98 longlen = strlen(str) * 2 + 2;
99 startptr = eeprom_string_ptr;
100 eeprom[eeprom_string_ptr++] = 0x0300 | longlen;
101 while (*str)
102 eeprom[eeprom_string_ptr++] = *str++;
103 return (longlen << 8) | 0x80 | (startptr << 1);
104 }
105
106 fill_eeprom(serial)
107 char *serial;
108 {
109 u_char byte09;
110
111 if (serial)
112 byte0A |= 0x08;
113 else
114 byte0A &= 0xF7;
115 byte09 = maxpower / 2;
116 eeprom[0] = (byte01 << 8) | byte00;
117 eeprom[1] = vid;
118 eeprom[2] = pid;
119 eeprom[3] = 0x0500;
120 eeprom[4] = (byte09 << 8) | byte08;
121 eeprom[5] = byte0A;
122 eeprom[6] = usb_version;
123 eeprom[7] = write_string(manuf);
124 eeprom[8] = write_string(product);
125 if (serial)
126 eeprom[9] = write_string(serial);
127 else
128 eeprom[9] = 0;
129 eeprom[10] = 0x46;
130 }
131
132 do_checksum()
133 {
134 u_short chksum = 0xAAAA;
135 unsigned n;
136
137 for (n = 0; n < 63; n++) {
138 chksum ^= eeprom[n];
139 chksum = (chksum << 1) | (chksum >> 15);
140 }
141 eeprom[63] = chksum;
142 }
143
144 emit_output()
145 {
146 unsigned n, col;
147
148 for (n = 0; n < 64; n++) {
149 col = n & 7;
150 if (col == 0)
151 printf("%02X:", n * 2);
152 printf(" %04X", eeprom[n]);
153 if (col == 7)
154 putchar('\n');
155 }
156 }
157
158 main(argc, argv)
159 char **argv;
160 {
161 if (argc < 2 || argc > 3) {
162 fprintf(stderr, "usage: %s config-file [serial-num]\n",
163 argv[0]);
164 exit(1);
165 }
166 read_config_file(argv[1]);
167 fill_eeprom(argv[2]);
168 do_checksum();
169 emit_output();
170 exit(0);
171 }