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;
17 struct ftdi_eeprom eeprom;
18 unsigned char buf[2048];
24 char const *serial = 0;
29 if ((ftdi = ftdi_new()) == 0)
31 fprintf(stderr,"Failed to allocate ftdi structure\n");
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 "
76 if (ftdi_init(ftdi) < 0)
78 fprintf(stderr, "ftdi_init failed\n");
82 // Select first interface
83 ftdi_set_interface(ftdi, INTERFACE_ANY);
86 f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
89 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
91 fprintf(stderr, " Desc %s", desc);
93 fprintf(stderr, " Serial %s", serial);
94 fprintf(stderr, "\n");
95 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
96 f, ftdi_get_error_string(ftdi));
103 ftdi_eeprom_setsize(ftdi, &eeprom, 2048);
104 f = ftdi_erase_eeprom(ftdi);
107 fprintf(stderr, "Erase failed: %s",
108 ftdi_get_error_string(ftdi));
111 if (ftdi->eeprom->chip == -1)
112 fprintf(stderr, "No EEPROM\n");
113 else if (ftdi->eeprom->chip == 0)
114 fprintf(stderr, "Internal EEPROM\n");
116 fprintf(stderr, "Found 93x%02x\n",ftdi->eeprom->chip);
122 ftdi->eeprom = &eeprom;
125 ftdi_eeprom_initdefaults(ftdi);
126 ftdi->eeprom->manufacturer="IKDA";
127 ftdi->eeprom->product="CPS-CONN";
128 ftdi->eeprom->serial="0001";
129 ftdi->eeprom->chip= large_chip;
130 ftdi->eeprom->cbus_function[0]= CBUS_BB_RD;
131 ftdi->eeprom->cbus_function[1]= CBUS_CLK48;
132 ftdi->eeprom->cbus_function[2]= CBUS_IOMODE;
133 ftdi->eeprom->cbus_function[3]= CBUS_BB;
134 ftdi->eeprom->cbus_function[4]= CBUS_CLK6;
135 f=(ftdi_eeprom_build(ftdi, buf));
138 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
139 f, ftdi_get_error_string(ftdi));
145 f = ftdi_read_eeprom(ftdi, buf);
148 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
149 f, ftdi_get_error_string(ftdi));
153 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, ftdi->eeprom->size);
154 for(i=0; i < ftdi->eeprom->size; i += 16)
156 fprintf(stdout,"0x%03x:", i);
158 for (j = 0; j< 8; j++)
159 fprintf(stdout," %02x", buf[i+j]);
162 fprintf(stdout," %02x", buf[i+j]);
164 for (j = 0; j< 8; j++)
165 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
168 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
169 fprintf(stdout,"\n");
172 f = ftdi_eeprom_decode(ftdi,buf, size, 1);
174 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
175 f, ftdi_get_error_string(ftdi));
180 ftdi_usb_close(ftdi);