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 *ftdi;
22 char const *serial = 0;
28 if ((ftdi = ftdi_new()) == 0)
30 fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
31 ftdi_get_error_string(ftdi));
35 while ((i = getopt(argc, argv, "d::ev:p:P:S:")) != -1)
48 vid = strtoul(optarg, NULL, 0);
51 pid = strtoul(optarg, NULL, 0);
60 fprintf(stderr, "usage: %s [options]\n", *argv);
61 fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
62 "EEPROM or for 256 Byte EEPROm if some [num] is given\n");
63 fprintf(stderr, "\t-e erase\n");
64 fprintf(stderr, "\t-v verbose decoding\n");
65 fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
66 fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
67 fprintf(stderr, "\t-P <string? Search for device with given "
68 "product description\n");
69 fprintf(stderr, "\t-S <string? Search for device with given "
75 // Select first interface
76 ftdi_set_interface(ftdi, INTERFACE_ANY);
79 f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
82 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
84 fprintf(stderr, " Desc %s", desc);
86 fprintf(stderr, " Serial %s", serial);
87 fprintf(stderr, "\n");
88 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
89 f, ftdi_get_error_string(ftdi));
96 f = ftdi_erase_eeprom(ftdi);
99 fprintf(stderr, "Erase failed: %s",
100 ftdi_get_error_string(ftdi));
103 if (ftdi->eeprom->chip == -1)
104 fprintf(stderr, "No EEPROM\n");
105 else if (ftdi->eeprom->chip == 0)
106 fprintf(stderr, "Internal EEPROM\n");
108 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
114 ftdi_eeprom_initdefaults(ftdi);
115 ftdi->eeprom->manufacturer="IKDA";
116 ftdi->eeprom->product="CPS-CONN";
117 ftdi->eeprom->serial="0001";
118 ftdi->eeprom->chip= (large_chip)?0x66:0;
119 f=(ftdi_eeprom_build(ftdi));
122 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
123 f, ftdi_get_error_string(ftdi));
129 f = ftdi_read_eeprom(ftdi);
132 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
133 f, ftdi_get_error_string(ftdi));
137 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, ftdi->eeprom->size);
138 buf = ftdi->eeprom->buf;
139 if (ftdi->type == TYPE_R)
142 size = ftdi->eeprom->size;
143 for(i=0; i < size; i += 16)
145 fprintf(stdout,"0x%03x:", i);
147 for (j = 0; j< 8; j++)
148 fprintf(stdout," %02x", buf[i+j]);
151 fprintf(stdout," %02x", buf[i+j]);
153 for (j = 0; j< 8; j++)
154 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
157 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
158 fprintf(stdout,"\n");
161 f = ftdi_eeprom_decode(ftdi, 1);
163 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
164 f, ftdi_get_error_string(ftdi));
169 ftdi_usb_close(ftdi);