| 1 | /* LIBFTDI EEPROM access example |
| 2 | |
| 3 | This program is distributed under the GPL, version 2 |
| 4 | */ |
| 5 | |
| 6 | #include <stdio.h> |
| 7 | #include <stdlib.h> |
| 8 | #include <string.h> |
| 9 | #include <ctype.h> |
| 10 | #include <unistd.h> |
| 11 | #include <getopt.h> |
| 12 | #include <ftdi.h> |
| 13 | |
| 14 | int read_decode_eeprom(struct ftdi_context *ftdi) |
| 15 | { |
| 16 | int i, j, f; |
| 17 | int value; |
| 18 | int size; |
| 19 | unsigned char buf[256]; |
| 20 | |
| 21 | f = ftdi_read_eeprom(ftdi); |
| 22 | if (f < 0) |
| 23 | { |
| 24 | fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n", |
| 25 | f, ftdi_get_error_string(ftdi)); |
| 26 | return -1; |
| 27 | } |
| 28 | |
| 29 | |
| 30 | ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value); |
| 31 | if (value <0) |
| 32 | { |
| 33 | fprintf(stderr, "No EEPROM found or EEPROM empty\n"); |
| 34 | fprintf(stderr, "On empty EEPROM, use -w option to write default values\n"); |
| 35 | return -1; |
| 36 | } |
| 37 | fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value); |
| 38 | if (ftdi->type == TYPE_R) |
| 39 | size = 0xa0; |
| 40 | else |
| 41 | size = value; |
| 42 | ftdi_get_eeprom_buf(ftdi, buf, size); |
| 43 | for (i=0; i < size; i += 16) |
| 44 | { |
| 45 | fprintf(stdout,"0x%03x:", i); |
| 46 | |
| 47 | for (j = 0; j< 8; j++) |
| 48 | fprintf(stdout," %02x", buf[i+j]); |
| 49 | fprintf(stdout," "); |
| 50 | for (; j< 16; j++) |
| 51 | fprintf(stdout," %02x", buf[i+j]); |
| 52 | fprintf(stdout," "); |
| 53 | for (j = 0; j< 8; j++) |
| 54 | fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.'); |
| 55 | fprintf(stdout," "); |
| 56 | for (; j< 16; j++) |
| 57 | fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.'); |
| 58 | fprintf(stdout,"\n"); |
| 59 | } |
| 60 | |
| 61 | f = ftdi_eeprom_decode(ftdi, 1); |
| 62 | if (f < 0) |
| 63 | { |
| 64 | fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n", |
| 65 | f, ftdi_get_error_string(ftdi)); |
| 66 | return -1; |
| 67 | } |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | int main(int argc, char **argv) |
| 72 | { |
| 73 | struct ftdi_context *ftdi; |
| 74 | int f, i; |
| 75 | int vid = 0; |
| 76 | int pid = 0; |
| 77 | char const *desc = 0; |
| 78 | char const *serial = 0; |
| 79 | int erase = 0; |
| 80 | int use_defaults = 0; |
| 81 | int large_chip = 0; |
| 82 | int do_write = 0; |
| 83 | int retval = 0; |
| 84 | int value; |
| 85 | |
| 86 | if ((ftdi = ftdi_new()) == 0) |
| 87 | { |
| 88 | fprintf(stderr, "Failed to allocate ftdi structure :%s \n", |
| 89 | ftdi_get_error_string(ftdi)); |
| 90 | return EXIT_FAILURE; |
| 91 | } |
| 92 | |
| 93 | while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1) |
| 94 | { |
| 95 | switch (i) |
| 96 | { |
| 97 | case 'd': |
| 98 | use_defaults = 1; |
| 99 | if (optarg) |
| 100 | large_chip = 0x66; |
| 101 | break; |
| 102 | case 'e': |
| 103 | erase = 1; |
| 104 | break; |
| 105 | case 'v': |
| 106 | vid = strtoul(optarg, NULL, 0); |
| 107 | break; |
| 108 | case 'p': |
| 109 | pid = strtoul(optarg, NULL, 0); |
| 110 | break; |
| 111 | case 'P': |
| 112 | desc = optarg; |
| 113 | break; |
| 114 | case 'S': |
| 115 | serial = optarg; |
| 116 | break; |
| 117 | case 'w': |
| 118 | do_write = 1; |
| 119 | break; |
| 120 | default: |
| 121 | fprintf(stderr, "usage: %s [options]\n", *argv); |
| 122 | fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte " |
| 123 | "EEPROM or for 256 Byte EEPROM if some [num] is given\n"); |
| 124 | fprintf(stderr, "\t-w write\n"); |
| 125 | fprintf(stderr, "\t-e erase\n"); |
| 126 | fprintf(stderr, "\t-v verbose decoding\n"); |
| 127 | fprintf(stderr, "\t-p <number> Search for device with PID == number\n"); |
| 128 | fprintf(stderr, "\t-v <number> Search for device with VID == number\n"); |
| 129 | fprintf(stderr, "\t-P <string? Search for device with given " |
| 130 | "product description\n"); |
| 131 | fprintf(stderr, "\t-S <string? Search for device with given " |
| 132 | "serial number\n"); |
| 133 | retval = -1; |
| 134 | goto done; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | // Select first interface |
| 139 | ftdi_set_interface(ftdi, INTERFACE_ANY); |
| 140 | |
| 141 | if (!vid && !pid && desc == NULL && serial == NULL) |
| 142 | { |
| 143 | struct ftdi_device_list *devlist, *curdev; |
| 144 | int res; |
| 145 | if ((res = ftdi_usb_find_all(ftdi, &devlist, 0, 0)) < 0) |
| 146 | { |
| 147 | fprintf(stderr, "No FTDI with default VID/PID found\n"); |
| 148 | retval = EXIT_FAILURE; |
| 149 | goto do_deinit; |
| 150 | } |
| 151 | if (res > 1) |
| 152 | { |
| 153 | int i = 1; |
| 154 | fprintf(stderr, "%d FTDI devices found: Only Readout on EEPROM done. ",res); |
| 155 | fprintf(stderr, "Use VID/PID/desc/serial to select device\n"); |
| 156 | for (curdev = devlist; curdev != NULL; curdev= curdev->next, i++) |
| 157 | { |
| 158 | f = ftdi_usb_open_dev(ftdi, curdev->dev); |
| 159 | if (f<0) |
| 160 | { |
| 161 | fprintf(stderr, "Unable to open device %d: (%s)", |
| 162 | i, ftdi_get_error_string(ftdi)); |
| 163 | continue; |
| 164 | } |
| 165 | fprintf(stderr, "Decoded values of device %d:\n", i); |
| 166 | read_decode_eeprom(ftdi); |
| 167 | ftdi_usb_close(ftdi); |
| 168 | } |
| 169 | ftdi_list_free(&devlist); |
| 170 | retval = EXIT_SUCCESS; |
| 171 | goto do_deinit; |
| 172 | } |
| 173 | else if (res == 1) |
| 174 | { |
| 175 | f = ftdi_usb_open_dev(ftdi, devlist[0].dev); |
| 176 | if (f<0) |
| 177 | { |
| 178 | fprintf(stderr, "Unable to open device %d: (%s)", |
| 179 | i, ftdi_get_error_string(ftdi)); |
| 180 | } |
| 181 | } |
| 182 | else |
| 183 | { |
| 184 | fprintf(stderr, "No devices found\n"); |
| 185 | f = 0; |
| 186 | } |
| 187 | ftdi_list_free(&devlist); |
| 188 | } |
| 189 | else |
| 190 | { |
| 191 | // Open device |
| 192 | f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial); |
| 193 | if (f < 0) |
| 194 | { |
| 195 | fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid); |
| 196 | if (desc) |
| 197 | fprintf(stderr, " Desc %s", desc); |
| 198 | if (serial) |
| 199 | fprintf(stderr, " Serial %s", serial); |
| 200 | fprintf(stderr, "\n"); |
| 201 | fprintf(stderr, "unable to open ftdi device: %d (%s)\n", |
| 202 | f, ftdi_get_error_string(ftdi)); |
| 203 | |
| 204 | retval = -1; |
| 205 | goto done; |
| 206 | } |
| 207 | } |
| 208 | if (erase) |
| 209 | { |
| 210 | f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */ |
| 211 | if (f < 0) |
| 212 | { |
| 213 | fprintf(stderr, "Erase failed: %s", |
| 214 | ftdi_get_error_string(ftdi)); |
| 215 | retval = -2; |
| 216 | goto done; |
| 217 | } |
| 218 | if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0) |
| 219 | { |
| 220 | fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n", |
| 221 | f, ftdi_get_error_string(ftdi)); |
| 222 | } |
| 223 | if (value == -1) |
| 224 | fprintf(stderr, "No EEPROM\n"); |
| 225 | else if (value == 0) |
| 226 | fprintf(stderr, "Internal EEPROM\n"); |
| 227 | else |
| 228 | fprintf(stderr, "Found 93x%02x\n", value); |
| 229 | retval = 0; |
| 230 | goto done; |
| 231 | } |
| 232 | |
| 233 | if (use_defaults) |
| 234 | { |
| 235 | ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL); |
| 236 | if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0) |
| 237 | { |
| 238 | fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| 239 | f, ftdi_get_error_string(ftdi)); |
| 240 | } |
| 241 | if (large_chip) |
| 242 | if (ftdi_set_eeprom_value(ftdi, CHIP_TYPE, 0x66) <0) |
| 243 | { |
| 244 | fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| 245 | f, ftdi_get_error_string(ftdi)); |
| 246 | } |
| 247 | f=(ftdi_eeprom_build(ftdi)); |
| 248 | if (f < 0) |
| 249 | { |
| 250 | fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n", |
| 251 | f, ftdi_get_error_string(ftdi)); |
| 252 | retval = -1; |
| 253 | goto done; |
| 254 | } |
| 255 | } |
| 256 | else if (do_write) |
| 257 | { |
| 258 | ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL); |
| 259 | f = ftdi_erase_eeprom(ftdi); |
| 260 | if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0) |
| 261 | { |
| 262 | fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| 263 | f, ftdi_get_error_string(ftdi)); |
| 264 | } |
| 265 | f = ftdi_erase_eeprom(ftdi);/* needed to determine EEPROM chip type */ |
| 266 | if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0) |
| 267 | { |
| 268 | fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n", |
| 269 | f, ftdi_get_error_string(ftdi)); |
| 270 | } |
| 271 | if (value == -1) |
| 272 | fprintf(stderr, "No EEPROM\n"); |
| 273 | else if (value == 0) |
| 274 | fprintf(stderr, "Internal EEPROM\n"); |
| 275 | else |
| 276 | fprintf(stderr, "Found 93x%02x\n", value); |
| 277 | f=(ftdi_eeprom_build(ftdi)); |
| 278 | if (f < 0) |
| 279 | { |
| 280 | fprintf(stderr, "Erase failed: %s", |
| 281 | ftdi_get_error_string(ftdi)); |
| 282 | retval = -2; |
| 283 | goto done; |
| 284 | } |
| 285 | f = ftdi_write_eeprom(ftdi); |
| 286 | { |
| 287 | fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n", |
| 288 | f, ftdi_get_error_string(ftdi)); |
| 289 | retval = 1; |
| 290 | goto done; |
| 291 | } |
| 292 | } |
| 293 | retval = read_decode_eeprom(ftdi); |
| 294 | done: |
| 295 | ftdi_usb_close(ftdi); |
| 296 | do_deinit: |
| 297 | ftdi_free(ftdi); |
| 298 | return retval; |
| 299 | } |