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-w write\n");
68 fprintf(stderr, "\t-e erase\n");
69 fprintf(stderr, "\t-v verbose decoding\n");
70 fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
71 fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
72 fprintf(stderr, "\t-P <string? Search for device with given "
73 "product description\n");
74 fprintf(stderr, "\t-S <string? Search for device with given "
80 // Select first interface
81 ftdi_set_interface(ftdi, INTERFACE_ANY);
84 f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
87 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
89 fprintf(stderr, " Desc %s", desc);
91 fprintf(stderr, " Serial %s", serial);
92 fprintf(stderr, "\n");
93 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
94 f, ftdi_get_error_string(ftdi));
101 f = ftdi_erase_eeprom(ftdi);
104 fprintf(stderr, "Erase failed: %s",
105 ftdi_get_error_string(ftdi));
108 if (ftdi->eeprom->chip == -1)
109 fprintf(stderr, "No EEPROM\n");
110 else if (ftdi->eeprom->chip == 0)
111 fprintf(stderr, "Internal EEPROM\n");
113 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
119 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAF", "0001");
120 ftdi->eeprom->max_power = 500;
121 f=(ftdi_eeprom_build(ftdi));
124 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
125 f, ftdi_get_error_string(ftdi));
131 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAG", "0001");
132 ftdi->eeprom->max_power = 500;
133 f = ftdi_erase_eeprom(ftdi);
134 if (ftdi->eeprom->chip == -1)
135 fprintf(stderr, "No EEPROM\n");
136 else if (ftdi->eeprom->chip == 0)
137 fprintf(stderr, "Internal EEPROM\n");
139 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
140 f=(ftdi_eeprom_build(ftdi));
143 fprintf(stderr, "Erase failed: %s",
144 ftdi_get_error_string(ftdi));
147 f = ftdi_write_eeprom(ftdi);
149 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
150 f, ftdi_get_error_string(ftdi));
153 f = ftdi_read_eeprom(ftdi);
156 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
157 f, ftdi_get_error_string(ftdi));
163 f = ftdi_read_eeprom(ftdi);
166 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
167 f, ftdi_get_error_string(ftdi));
173 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, ftdi->eeprom->size);
174 buf = ftdi->eeprom->buf;
175 if (ftdi->type == TYPE_R)
178 size = ftdi->eeprom->size;
179 for(i=0; i < size; i += 16)
181 fprintf(stdout,"0x%03x:", i);
183 for (j = 0; j< 8; j++)
184 fprintf(stdout," %02x", buf[i+j]);
187 fprintf(stdout," %02x", buf[i+j]);
189 for (j = 0; j< 8; j++)
190 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
193 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
194 fprintf(stdout,"\n");
197 f = ftdi_eeprom_decode(ftdi, 1);
200 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
201 f, ftdi_get_error_string(ftdi));
205 ftdi_usb_close(ftdi);