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;
29 if ((ftdi = ftdi_new()) == 0)
31 fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
32 ftdi_get_error_string(ftdi));
36 while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1)
49 vid = strtoul(optarg, NULL, 0);
52 pid = strtoul(optarg, NULL, 0);
64 fprintf(stderr, "usage: %s [options]\n", *argv);
65 fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
66 "EEPROM or for 256 Byte EEPROm if some [num] is given\n");
67 fprintf(stderr, "\t-e erase\n");
68 fprintf(stderr, "\t-v verbose decoding\n");
69 fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
70 fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
71 fprintf(stderr, "\t-P <string? Search for device with given "
72 "product description\n");
73 fprintf(stderr, "\t-S <string? Search for device with given "
79 // Select first interface
80 ftdi_set_interface(ftdi, INTERFACE_ANY);
83 f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
86 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
88 fprintf(stderr, " Desc %s", desc);
90 fprintf(stderr, " Serial %s", serial);
91 fprintf(stderr, "\n");
92 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
93 f, ftdi_get_error_string(ftdi));
100 f = ftdi_erase_eeprom(ftdi);
103 fprintf(stderr, "Erase failed: %s",
104 ftdi_get_error_string(ftdi));
107 if (ftdi->eeprom->chip == -1)
108 fprintf(stderr, "No EEPROM\n");
109 else if (ftdi->eeprom->chip == 0)
110 fprintf(stderr, "Internal EEPROM\n");
112 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
118 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAF", "0001");
119 ftdi->eeprom->max_power = 500;
120 f=(ftdi_eeprom_build(ftdi));
123 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
124 f, ftdi_get_error_string(ftdi));
130 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAG", "0001");
131 ftdi->eeprom->max_power = 500;
132 f = ftdi_erase_eeprom(ftdi);
133 if (ftdi->eeprom->chip == -1)
134 fprintf(stderr, "No EEPROM\n");
135 else if (ftdi->eeprom->chip == 0)
136 fprintf(stderr, "Internal EEPROM\n");
138 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
139 f=(ftdi_eeprom_build(ftdi));
142 fprintf(stderr, "Erase failed: %s",
143 ftdi_get_error_string(ftdi));
146 f = ftdi_write_eeprom(ftdi);
148 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
149 f, ftdi_get_error_string(ftdi));
152 f = ftdi_read_eeprom(ftdi);
155 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
156 f, ftdi_get_error_string(ftdi));
162 f = ftdi_read_eeprom(ftdi);
165 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
166 f, ftdi_get_error_string(ftdi));
172 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, ftdi->eeprom->size);
173 buf = ftdi->eeprom->buf;
174 if (ftdi->type == TYPE_R)
177 size = ftdi->eeprom->size;
178 for(i=0; i < size; i += 16)
180 fprintf(stdout,"0x%03x:", i);
182 for (j = 0; j< 8; j++)
183 fprintf(stdout," %02x", buf[i+j]);
186 fprintf(stdout," %02x", buf[i+j]);
188 for (j = 0; j< 8; j++)
189 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
192 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
193 fprintf(stdout,"\n");
196 f = ftdi_eeprom_decode(ftdi, 1);
199 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
200 f, ftdi_get_error_string(ftdi));
204 ftdi_usb_close(ftdi);