FreeCalypso > hg > freecalypso-hwlab
view ee2232/ee2232-prog.c @ 51:311c800268b8
doc/FTDI-EEPROM-tools: added note about bigger EEPROMs
not providing any more room for strings
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 22 Apr 2019 23:28:27 +0000 |
parents | a85b6b7398bc |
children |
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#include <sys/types.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <ftdi.h> char *device_selector = "i:0x0403:0x6010"; unsigned eeprom_size = 64; u_short eeprom[256]; int erase; process_cmdline(argc, argv) char **argv; { int c; extern char *optarg; while ((c = getopt(argc, argv, "d:et:")) != EOF) { switch (c) { case 'd': device_selector = optarg; continue; case 'e': erase = 1; continue; case 't': if (!strcmp(optarg, "46")) eeprom_size = 64; else if (!strcmp(optarg, "56")) eeprom_size = 128; else if (!strcmp(optarg, "66")) eeprom_size = 256; else { fprintf(stderr, "error: -t option invalid value \"%s\"\n", optarg); exit(1); } continue; default: /* error msg already printed */ exit(1); } } } read_eeprom_from_stdin() { unsigned n, off; int rc; for (n = 0; n < eeprom_size; n += 8) { rc = scanf("%x: %hx %hx %hx %hx %hx %hx %hx %hx", &off, eeprom + n, eeprom + n + 1, eeprom + n + 2, eeprom + n + 3, eeprom + n + 4, eeprom + n + 5, eeprom + n + 6, eeprom + n + 7); if (rc != 9 || off != n * 2) { fprintf(stderr, "ee2232-prog error: invalid input on stdin\n"); exit(1); } } } main(argc, argv) char **argv; { struct ftdi_context ftdi; unsigned n; process_cmdline(argc, argv); if (erase) memset(eeprom, 0xFF, eeprom_size * 2); else read_eeprom_from_stdin(); ftdi_init(&ftdi); if (ftdi_usb_open_string(&ftdi, device_selector) < 0) { fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str); exit(1); } for (n = 0; n < eeprom_size; n++) { if (ftdi_write_eeprom_location(&ftdi, n, eeprom[n]) < 0) { fprintf(stderr, "EEPROM write error: %s\n", ftdi.error_str); exit(1); } } ftdi_usb_close(&ftdi); exit(0); }