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 unsigned char buf[256];
22 char const *serial = 0;
30 if ((ftdi = ftdi_new()) == 0)
32 fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
33 ftdi_get_error_string(ftdi));
37 while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1)
50 vid = strtoul(optarg, NULL, 0);
53 pid = strtoul(optarg, NULL, 0);
65 fprintf(stderr, "usage: %s [options]\n", *argv);
66 fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte "
67 "EEPROM or for 256 Byte EEPROM if some [num] is given\n");
68 fprintf(stderr, "\t-w write\n");
69 fprintf(stderr, "\t-e erase\n");
70 fprintf(stderr, "\t-v verbose decoding\n");
71 fprintf(stderr, "\t-p <number> Search for device with PID == number\n");
72 fprintf(stderr, "\t-v <number> Search for device with VID == number\n");
73 fprintf(stderr, "\t-P <string? Search for device with given "
74 "product description\n");
75 fprintf(stderr, "\t-S <string? Search for device with given "
81 // Select first interface
82 ftdi_set_interface(ftdi, INTERFACE_ANY);
85 f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial);
88 fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid);
90 fprintf(stderr, " Desc %s", desc);
92 fprintf(stderr, " Serial %s", serial);
93 fprintf(stderr, "\n");
94 fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
95 f, ftdi_get_error_string(ftdi));
102 f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */
105 fprintf(stderr, "Erase failed: %s",
106 ftdi_get_error_string(ftdi));
109 if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
111 fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
112 f, ftdi_get_error_string(ftdi));
115 fprintf(stderr, "No EEPROM\n");
117 fprintf(stderr, "Internal EEPROM\n");
119 fprintf(stderr, "Found 93x%02x\n", value);
125 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAG", "0001");
126 if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
128 fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
129 f, ftdi_get_error_string(ftdi));
132 if (ftdi_set_eeprom_value(ftdi, CHIP_TYPE, 0x66) <0)
134 fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
135 f, ftdi_get_error_string(ftdi));
137 f=(ftdi_eeprom_build(ftdi));
140 fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n",
141 f, ftdi_get_error_string(ftdi));
147 ftdi_eeprom_initdefaults(ftdi, "IKDA", "FTDIJTAG", "0001");
148 f = ftdi_erase_eeprom(ftdi);
149 if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0)
151 fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n",
152 f, ftdi_get_error_string(ftdi));
154 f = ftdi_erase_eeprom(ftdi);/* needed to determine EEPROM chip type */
155 if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0)
157 fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n",
158 f, ftdi_get_error_string(ftdi));
161 fprintf(stderr, "No EEPROM\n");
163 fprintf(stderr, "Internal EEPROM\n");
165 fprintf(stderr, "Found 93x%02x\n", value);
166 f=(ftdi_eeprom_build(ftdi));
169 fprintf(stderr, "Erase failed: %s",
170 ftdi_get_error_string(ftdi));
173 f = ftdi_write_eeprom(ftdi);
175 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
176 f, ftdi_get_error_string(ftdi));
180 f = ftdi_read_eeprom(ftdi);
183 fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n",
184 f, ftdi_get_error_string(ftdi));
189 ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value);
192 fprintf(stderr, "No EEPROM found\n");
196 fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value);
197 if (ftdi->type == TYPE_R)
201 ftdi_get_eeprom_buf(ftdi, buf, size);
202 for (i=0; i < size; i += 16)
204 fprintf(stdout,"0x%03x:", i);
206 for (j = 0; j< 8; j++)
207 fprintf(stdout," %02x", buf[i+j]);
210 fprintf(stdout," %02x", buf[i+j]);
212 for (j = 0; j< 8; j++)
213 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
216 fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.');
217 fprintf(stdout,"\n");
220 f = ftdi_eeprom_decode(ftdi, 1);
223 fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n",
224 f, ftdi_get_error_string(ftdi));
228 ftdi_usb_close(ftdi);