FreeCalypso > hg > freecalypso-hwlab
view fteeprom/fteeprom-prog.c @ 173:df4bf4e06221
doc: several articles moved to other repositories
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 11 Sep 2023 06:51:05 +0000 |
parents | 47dbfd66bd58 |
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> unsigned eeprom_size; u_short eeprom[256]; read_eeprom_common(inf, filename_for_errs) FILE *inf; char *filename_for_errs; { char linebuf[1024], *cp; int lineno, rc; unsigned ptr = 0, input_off; for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) { for (cp = linebuf; isspace(*cp); cp++) ; if (*cp == '\0' || *cp == '#') continue; if (ptr >= 256) { fprintf(stderr, "%s line %d: maximum EEPROM size exceeded\n", filename_for_errs, lineno); exit(1); } rc = sscanf(linebuf, "%x: %hx %hx %hx %hx %hx %hx %hx %hx", &input_off, eeprom + ptr, eeprom + ptr + 1, eeprom + ptr + 2, eeprom + ptr + 3, eeprom + ptr + 4, eeprom + ptr + 5, eeprom + ptr + 6, eeprom + ptr + 7); if (rc != 9 || input_off != ptr * 2) { fprintf(stderr, "%s line %d: invalid input\n", filename_for_errs, lineno); exit(1); } ptr += 8; } if (ptr != 64 && ptr != 128 && ptr != 256) { fprintf(stderr, "%s: not an EEPROM image of recognized size\n", filename_for_errs); exit(1); } eeprom_size = ptr; } read_eeprom_from_file(filename) char *filename; { FILE *inf; inf = fopen(filename, "r"); if (!inf) { perror(filename); exit(1); } read_eeprom_common(inf, filename); fclose(inf); } read_eeprom_from_stdin() { read_eeprom_common(stdin, "stdin"); } main(argc, argv) char **argv; { struct ftdi_context ftdi; u_short modem_status; unsigned n; if (argc < 2 || argc > 3) { fprintf(stderr, "usage: %s device-selector [eeprom-image]\n", argv[0]); exit(1); } if (argv[2]) read_eeprom_from_file(argv[2]); else read_eeprom_from_stdin(); ftdi_init(&ftdi); if (ftdi_usb_open_string(&ftdi, argv[1]) < 0) { fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str); exit(1); } /* magic sequence apparently required for FT232R */ if (ftdi_usb_reset(&ftdi) < 0) { fprintf(stderr, "ftdi_usb_reset() failed: %s\n", ftdi.error_str); exit(1); } if (ftdi_poll_modem_status(&ftdi, &modem_status) < 0) { fprintf(stderr, "ftdi_poll_modem_status() failed: %s\n", ftdi.error_str); exit(1); } if (ftdi_set_latency_timer(&ftdi, 0x77) < 0) { fprintf(stderr, "ftdi_set_latency_timer() 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); }