| /* LIBFTDI EEPROM access example |
| |
| This program is distributed under the GPL, version 2 |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <unistd.h> |
| #include <getopt.h> |
| #include <ftdi.h> |
| |
| int read_decode_eeprom(struct ftdi_context *ftdi) |
| { |
| int i, j, f; |
| int value; |
| int size; |
| unsigned char buf[256]; |
| |
| f = ftdi_read_eeprom(ftdi); |
| if (f < 0) |
| { |
| fprintf(stderr, "ftdi_read_eeprom: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| return -1; |
| } |
| |
| |
| ftdi_get_eeprom_value(ftdi, CHIP_SIZE, & value); |
| if (value <0) |
| { |
| fprintf(stderr, "No EEPROM found or EEPROM empty\n"); |
| fprintf(stderr, "On empty EEPROM, use -w option to write default values\n"); |
| return -1; |
| } |
| fprintf(stderr, "Chip type %d ftdi_eeprom_size: %d\n", ftdi->type, value); |
| if (ftdi->type == TYPE_R) |
| size = 0xa0; |
| else |
| size = value; |
| ftdi_get_eeprom_buf(ftdi, buf, size); |
| for (i=0; i < size; i += 16) |
| { |
| fprintf(stdout,"0x%03x:", i); |
| |
| for (j = 0; j< 8; j++) |
| fprintf(stdout," %02x", buf[i+j]); |
| fprintf(stdout," "); |
| for (; j< 16; j++) |
| fprintf(stdout," %02x", buf[i+j]); |
| fprintf(stdout," "); |
| for (j = 0; j< 8; j++) |
| fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.'); |
| fprintf(stdout," "); |
| for (; j< 16; j++) |
| fprintf(stdout,"%c", isprint(buf[i+j])?buf[i+j]:'.'); |
| fprintf(stdout,"\n"); |
| } |
| |
| f = ftdi_eeprom_decode(ftdi, 1); |
| if (f < 0) |
| { |
| fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| struct ftdi_context *ftdi; |
| int f, i; |
| int vid = 0; |
| int pid = 0; |
| char const *desc = 0; |
| char const *serial = 0; |
| int erase = 0; |
| int use_defaults = 0; |
| int large_chip = 0; |
| int do_write = 0; |
| int retval = 0; |
| int value; |
| |
| if ((ftdi = ftdi_new()) == 0) |
| { |
| fprintf(stderr, "Failed to allocate ftdi structure :%s \n", |
| ftdi_get_error_string(ftdi)); |
| return EXIT_FAILURE; |
| } |
| |
| while ((i = getopt(argc, argv, "d::ev:p:l:P:S:w")) != -1) |
| { |
| switch (i) |
| { |
| case 'd': |
| use_defaults = 1; |
| if (optarg) |
| large_chip = 0x66; |
| break; |
| case 'e': |
| erase = 1; |
| break; |
| case 'v': |
| vid = strtoul(optarg, NULL, 0); |
| break; |
| case 'p': |
| pid = strtoul(optarg, NULL, 0); |
| break; |
| case 'P': |
| desc = optarg; |
| break; |
| case 'S': |
| serial = optarg; |
| break; |
| case 'w': |
| do_write = 1; |
| break; |
| default: |
| fprintf(stderr, "usage: %s [options]\n", *argv); |
| fprintf(stderr, "\t-d[num] Work with default valuesfor 128 Byte " |
| "EEPROM or for 256 Byte EEPROM if some [num] is given\n"); |
| fprintf(stderr, "\t-w write\n"); |
| fprintf(stderr, "\t-e erase\n"); |
| fprintf(stderr, "\t-v verbose decoding\n"); |
| fprintf(stderr, "\t-p <number> Search for device with PID == number\n"); |
| fprintf(stderr, "\t-v <number> Search for device with VID == number\n"); |
| fprintf(stderr, "\t-P <string? Search for device with given " |
| "product description\n"); |
| fprintf(stderr, "\t-S <string? Search for device with given " |
| "serial number\n"); |
| retval = -1; |
| goto done; |
| } |
| } |
| |
| // Select first interface |
| ftdi_set_interface(ftdi, INTERFACE_ANY); |
| |
| if (!vid && !pid && desc == NULL && serial == NULL) |
| { |
| struct ftdi_device_list *devlist, *curdev; |
| int res; |
| if ((res = ftdi_usb_find_all(ftdi, &devlist, 0, 0)) < 0) |
| { |
| fprintf(stderr, "No FTDI with default VID/PID found\n"); |
| retval = EXIT_FAILURE; |
| goto do_deinit; |
| } |
| if (res > 1) |
| { |
| int i = 1; |
| fprintf(stderr, "%d FTDI devices found: Only Readout on EEPROM done. ",res); |
| fprintf(stderr, "Use VID/PID/desc/serial to select device\n"); |
| for (curdev = devlist; curdev != NULL; curdev= curdev->next, i++) |
| { |
| f = ftdi_usb_open_dev(ftdi, curdev->dev); |
| if (f<0) |
| { |
| fprintf(stderr, "Unable to open device %d: (%s)", |
| i, ftdi_get_error_string(ftdi)); |
| continue; |
| } |
| fprintf(stderr, "Decoded values of device %d:\n", i); |
| read_decode_eeprom(ftdi); |
| ftdi_usb_close(ftdi); |
| } |
| ftdi_list_free(&devlist); |
| retval = EXIT_SUCCESS; |
| goto do_deinit; |
| } |
| else if (res == 1) |
| { |
| f = ftdi_usb_open_dev(ftdi, devlist[0].dev); |
| if (f<0) |
| { |
| fprintf(stderr, "Unable to open device %d: (%s)", |
| i, ftdi_get_error_string(ftdi)); |
| } |
| } |
| else |
| { |
| fprintf(stderr, "No devices found\n"); |
| f = 0; |
| } |
| ftdi_list_free(&devlist); |
| } |
| else |
| { |
| // Open device |
| f = ftdi_usb_open_desc(ftdi, vid, pid, desc, serial); |
| if (f < 0) |
| { |
| fprintf(stderr, "Device VID 0x%04x PID 0x%04x", vid, pid); |
| if (desc) |
| fprintf(stderr, " Desc %s", desc); |
| if (serial) |
| fprintf(stderr, " Serial %s", serial); |
| fprintf(stderr, "\n"); |
| fprintf(stderr, "unable to open ftdi device: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| |
| retval = -1; |
| goto done; |
| } |
| } |
| if (erase) |
| { |
| f = ftdi_erase_eeprom(ftdi); /* needed to determine EEPROM chip type */ |
| if (f < 0) |
| { |
| fprintf(stderr, "Erase failed: %s", |
| ftdi_get_error_string(ftdi)); |
| retval = -2; |
| goto done; |
| } |
| if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0) |
| { |
| fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| } |
| if (value == -1) |
| fprintf(stderr, "No EEPROM\n"); |
| else if (value == 0) |
| fprintf(stderr, "Internal EEPROM\n"); |
| else |
| fprintf(stderr, "Found 93x%02x\n", value); |
| retval = 0; |
| goto done; |
| } |
| |
| if (use_defaults) |
| { |
| ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL); |
| if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0) |
| { |
| fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| } |
| if (large_chip) |
| if (ftdi_set_eeprom_value(ftdi, CHIP_TYPE, 0x66) <0) |
| { |
| fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| } |
| f=(ftdi_eeprom_build(ftdi)); |
| if (f < 0) |
| { |
| fprintf(stderr, "ftdi_eeprom_build: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| retval = -1; |
| goto done; |
| } |
| } |
| else if (do_write) |
| { |
| ftdi_eeprom_initdefaults(ftdi, NULL, NULL, NULL); |
| f = ftdi_erase_eeprom(ftdi); |
| if (ftdi_set_eeprom_value(ftdi, MAX_POWER, 500) <0) |
| { |
| fprintf(stderr, "ftdi_set_eeprom_value: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| } |
| f = ftdi_erase_eeprom(ftdi);/* needed to determine EEPROM chip type */ |
| if (ftdi_get_eeprom_value(ftdi, CHIP_TYPE, & value) <0) |
| { |
| fprintf(stderr, "ftdi_get_eeprom_value: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| } |
| if (value == -1) |
| fprintf(stderr, "No EEPROM\n"); |
| else if (value == 0) |
| fprintf(stderr, "Internal EEPROM\n"); |
| else |
| fprintf(stderr, "Found 93x%02x\n", value); |
| f=(ftdi_eeprom_build(ftdi)); |
| if (f < 0) |
| { |
| fprintf(stderr, "Erase failed: %s", |
| ftdi_get_error_string(ftdi)); |
| retval = -2; |
| goto done; |
| } |
| f = ftdi_write_eeprom(ftdi); |
| { |
| fprintf(stderr, "ftdi_eeprom_decode: %d (%s)\n", |
| f, ftdi_get_error_string(ftdi)); |
| retval = 1; |
| goto done; |
| } |
| } |
| retval = read_decode_eeprom(ftdi); |
| done: |
| ftdi_usb_close(ftdi); |
| do_deinit: |
| ftdi_free(ftdi); |
| return retval; |
| } |
