FreeCalypso > hg > fc-usbser-tools

annotate duart28/main.c @ 87:4393e1b4b245

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cp2102-decode-ee-desc: decode config descriptor
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 27 Sep 2023 19:15:29 +0000
parents f5847be43d35
children
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1 /*
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2 * Main module for fc-duart28-conf utility.
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3 */
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4
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5 #include <ctype.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <usb.h>
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11 #include "../libuwrap/open_close.h"
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12
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13 extern struct usb_device *find_duart28_usbdev();
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14 extern unsigned usb_presenting_pid;
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16 oper_show()
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17 {
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18 struct usb_device *dev;
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19 usb_dev_handle *usbh;
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20 int eeconf;
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22 dev = find_duart28_usbdev();
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23 if (!dev) {
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24 fprintf(stderr, "error: no DUART28 adapter found\n");
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25 exit(1);
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26 }
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27 usbh = usb_open(dev);
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28 if (!usbh) {
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29 fprintf(stderr, "error: usb_open() failed\n");
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30 exit(1);
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31 }
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32 read_eeprom(usbh);
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33 usb_close(usbh);
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34 eeconf = analyze_eeprom();
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35 if (eeconf == 'C' && usb_presenting_pid != 0x7152)
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36 printf("Visible USB device has wrong PID for C config"
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37 " - please replug\n");
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38 if (eeconf == 'S' && usb_presenting_pid != 0x6010)
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39 printf("Visible USB device has wrong PID for S config"
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40 " - please replug\n");
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41 return 0;
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42 }
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43
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44 oper_program(newconf)
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45 {
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46 struct usb_device *dev;
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47 usb_dev_handle *usbh;
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48 int prev;
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49
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50 dev = find_duart28_usbdev();
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51 if (!dev) {
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52 fprintf(stderr, "error: no DUART28 adapter found\n");
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53 exit(1);
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54 }
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55 usbh = usb_open(dev);
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56 if (!usbh) {
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57 fprintf(stderr, "error: usb_open() failed\n");
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58 exit(1);
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59 }
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60 usbwrap_claim_interface(usbh, 0, 1);
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61 usbwrap_claim_interface(usbh, 1, 1);
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62 read_eeprom(usbh);
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63 prev = analyze_eeprom();
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64 if (prev == newconf) {
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65 printf("EEPROM is already in the right state, nothing to program\n");
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66 usb_close(usbh);
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67 printf("Please replug the adapter to restore normal operation\n");
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68 return 0;
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69 }
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70 printf("Reprogramming to DUART28%c configuration\n", newconf);
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71 update_eeprom(usbh, newconf);
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72 usb_close(usbh);
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73 printf("EEPROM changed, replug the adapter to take effect\n");
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74 return 0;
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75 }
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76
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77 main(argc, argv)
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78 char **argv;
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79 {
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80 if (argc < 2) {
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81 usage: fprintf(stderr, "usage: %s show or %s set C|S\n",
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82 argv[0], argv[0]);
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83 exit(1);
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84 }
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85 if (!strcmp(argv[1], "show")) {
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86 if (argc != 2) {
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87 fprintf(stderr,
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88 "error: %s show command takes no arguments\n",
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89 argv[0]);
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90 exit(1);
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91 }
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92 return oper_show();
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93 }
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94 if (!strcmp(argv[1], "set")) {
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95 if (argc != 3) {
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96 fprintf(stderr,
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97 "error: %s set command takes 1 argument\n",
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98 argv[0]);
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99 exit(1);
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100 }
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101 if (!strcmp(argv[2], "C") || !strcmp(argv[2], "S"))
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102 return oper_program(argv[2][0]);
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103 if (!strcmp(argv[2], "c") || !strcmp(argv[2], "s"))
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104 return oper_program(toupper(argv[2][0]));
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105 fprintf(stderr, "error: %s set argument must be C or S\n",
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106 argv[0]);
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107 exit(1);
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108 }
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109 goto usage;
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110 }