1 /* LIBFTDI EEPROM access example
3 This program is distributed under the GPL, version 2
14 int main(int argc, char **argv)
16 struct ftdi_context ftdic;
17 struct ftdi_eeprom eeprom;
18 unsigned char buf[2048];
24 char const *serial = 0;
29 while ((i = getopt(argc, argv, "d::ev:p:P:S:")) != -1)
42 vid = strtoul(optarg, NULL, 0);
45 pid = strtoul(optarg, NULL, 0);
54 fprintf(stderr, "usage: %s [options]\n", *argv);
55 fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
56 "EEPROM or for 256 Byte EEPROm if some [num] is given\n");
57 fprintf(stderr, "\t-e erase\n");
58 fprintf(stderr, "\t-v verbose decoding\n");
59 fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
60 fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
61 fprintf(stderr, "\t-P <string? Search for device with given "
62 "product description\n");
63 fprintf(stderr, "\t-S <string? Search for device with given "
70 if (ftdi_init(&ftdic) < 0)
72 fprintf(stderr, "ftdi_init failed\n");
76 // Select first interface
77 ftdi_set_interface(&ftdic, INTERFACE_ANY);
80 f = ftdi_usb_open_desc(&ftdic, vid, pid, desc, serial);
83 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
85 fprintf(stderr, " Desc %s", desc);
87 fprintf(stderr, " Serial %s", serial);
88 fprintf(stderr, "\n");
89 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
90 f, ftdi_get_error_string(&ftdic));
97 ftdi_eeprom_setsize(&ftdic, &eeprom, 2048);
98 f = ftdi_erase_eeprom(&ftdic);
101 fprintf(stderr, "Erase failed: %s",
102 ftdi_get_error_string(&ftdic));
105 if (ftdic.eeprom->chip == -1)
106 fprintf(stderr, "No EEPROM\n");
107 else if (ftdic.eeprom->chip == 0)
108 fprintf(stderr, "Internal EEPROM\n");
110 fprintf(stderr, "Found 93x%02x\n",ftdic.eeprom->chip);
116 ftdic.eeprom = &eeprom;
119 ftdi_eeprom_initdefaults(&ftdic);
120 ftdic.eeprom->manufacturer="IKDA";
121 ftdic.eeprom->product="CPS-CONN";
122 ftdic.eeprom->serial="0001";
123 ftdic.eeprom->chip= large_chip;
124 ftdic.eeprom->cbus_function[0]= CBUS_BB_RD;
125 ftdic.eeprom->cbus_function[1]= CBUS_CLK48;
126 ftdic.eeprom->cbus_function[2]= CBUS_IOMODE;
127 ftdic.eeprom->cbus_function[3]= CBUS_BB;
128 ftdic.eeprom->cbus_function[4]= CBUS_CLK6;
129 f=(ftdi_eeprom_build(&ftdic, buf));
132 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
133 f, ftdi_get_error_string(&ftdic));
139 f = ftdi_read_eeprom(&ftdic, buf);
142 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
143 f, ftdi_get_error_string(&ftdic));
147 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdic.type, ftdic.eeprom->size);
148 for(i=0; i < ftdic.eeprom->size; i += 16)
150 fprintf(stdout,"0x%03x:", i);
152 for (j = 0; j< 8; j++)
153 fprintf(stdout," %02x", buf[i+j]);
156 fprintf(stdout," %02x", buf[i+j]);
158 for (j = 0; j< 8; j++)
159 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
162 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
163 fprintf(stdout,"\n");
166 f = ftdi_eeprom_decode(&ftdic,buf, size, 1);
168 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
169 f, ftdi_get_error_string(&ftdic));
174 ftdi_usb_close(&ftdic);