FreeCalypso > hg > freecalypso-hwlab
annotate fteeprom/fteeprom-read.c @ 74:0514e3520be3
doc/FTDI-EEPROM-tools: update for current state of FT232R support
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Wed, 16 Sep 2020 23:19:50 +0000 |
parents | c4b9026c8875 |
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rev | line source |
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1 #include <sys/types.h> |
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2 #include <string.h> |
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3 #include <strings.h> |
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4 #include <stdio.h> |
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5 #include <stdlib.h> |
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6 #include <unistd.h> |
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7 #include <ftdi.h> |
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8 |
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9 char *device_selector; |
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10 unsigned eeprom_size = 64; |
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11 |
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12 process_cmdline(argc, argv) |
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13 char **argv; |
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14 { |
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15 int c; |
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16 extern int optind; |
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17 |
42
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18 while ((c = getopt(argc, argv, "bB")) != EOF) { |
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19 switch (c) { |
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20 case 'b': |
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21 eeprom_size = 128; |
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22 continue; |
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23 case 'B': |
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24 eeprom_size = 256; |
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25 continue; |
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26 default: |
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27 /* error msg already printed */ |
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28 exit(1); |
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29 } |
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30 } |
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31 if (argc != optind + 1) { |
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32 fprintf(stderr, "usage: %s [options] device-selector\n", |
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33 argv[0]); |
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34 exit(1); |
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35 } |
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36 device_selector = argv[optind]; |
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37 } |
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38 |
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39 main(argc, argv) |
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40 char **argv; |
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41 { |
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42 struct ftdi_context ftdi; |
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43 u_short word; |
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44 unsigned n, col; |
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45 |
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46 process_cmdline(argc, argv); |
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47 ftdi_init(&ftdi); |
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48 if (ftdi_usb_open_string(&ftdi, device_selector) < 0) { |
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49 fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str); |
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50 exit(1); |
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51 } |
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52 for (n = 0; n < eeprom_size; n++) { |
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53 if (ftdi_read_eeprom_location(&ftdi, n, &word) < 0) { |
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54 fprintf(stderr, "EEPROM read error: %s\n", |
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55 ftdi.error_str); |
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56 exit(1); |
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57 } |
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58 col = n & 7; |
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59 if (col == 0) |
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60 printf("%02X:", n * 2); |
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61 printf(" %04X", word); |
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62 if (col == 7) |
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63 putchar('\n'); |
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64 } |
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65 ftdi_usb_close(&ftdi); |
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66 exit(0); |
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67 } |