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1
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#include <stdlib.h>
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2
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#include <stdio.h>
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3
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#include <unistd.h>
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4
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#include <string.h>
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5
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6
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#include "ausb.h"
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7
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8
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#define CJPPA_USB_VENDOR_ID 0x0c4b
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9
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#define CJPPA_USB_DEVICE_ID 0x0100
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10
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11
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static struct usb_device *find_cj_usbdev(int num)
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12
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{
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13
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struct usb_bus *busses, *bus;
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14
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struct usb_device *dev;
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15
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int found = 0;
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16
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17
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busses = usb_get_busses();
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18
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19
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for (bus = busses; bus; bus = bus->next) {
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20
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for (dev = bus->devices; dev; dev = dev->next) {
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21
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if (dev->descriptor.idVendor == CJPPA_USB_VENDOR_ID &&
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22
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dev->descriptor.idProduct == CJPPA_USB_DEVICE_ID) {
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23
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found++;
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24
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if (found == num)
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25
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return dev;
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26
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}
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27
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}
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28
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}
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29
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return NULL;
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30
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}
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31
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32
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static void int_cb(struct usbdevfs_urb *uurb, void *data)
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33
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{
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34
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struct ausb_dev_handle *ah = uurb->usercontext;
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35
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unsigned char *buffer = uurb->buffer;
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36
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int i;
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37
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38
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fprintf(stdout, "int_cb() called, ");
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39
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40
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ausb_dump_urb(uurb);
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41
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42
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for (i = 0; i < uurb->actual_length; i++)
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43
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printf("%02x ", buffer[i]);
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44
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45
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if (ausb_submit_urb(ah, uurb)) {
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46
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fprintf(stderr, "unable to resubmit urb\n");
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47
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ausb_close(ah);
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48
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exit(1);
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49
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}
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50
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51
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fflush(stdout);
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52
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}
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53
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54
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int main(int argc, char **argv)
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55
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{
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56
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struct usb_device *dev;
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57
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struct ausb_dev_handle *ah;
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58
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struct usbdevfs_urb *uurb;
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59
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char buffer[280];
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60
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ausb_init();
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61
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62
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uurb = malloc(sizeof(*uurb));
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63
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64
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dev = find_cj_usbdev(1);
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65
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66
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if (!dev) {
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67
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fprintf(stderr, "unable to find matching usb device\n");
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68
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exit(1);
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69
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}
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70
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71
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ah = ausb_open(dev);
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72
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if (!ah) {
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73
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fprintf(stderr, "error while opening usb device\n");
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74
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exit(1);
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75
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}
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76
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77
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if (ausb_claim_interface(ah, 0)) {
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78
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fprintf(stderr, "unable to claim interface\n");
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79
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ausb_close(ah);
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80
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exit(1);
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81
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}
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82
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83
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if (usb_set_configuration(ah->uh, 1)) {
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84
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fprintf(stderr, "unable to set configuration 1\n");
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85
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ausb_close(ah);
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86
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exit(1);
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87
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}
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88
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89
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ausb_register_callback(ah, USBDEVFS_URB_TYPE_INTERRUPT, &int_cb, ah);
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90
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91
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#if 1
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92
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ausb_fill_int_urb(uurb, 0x81, buffer, sizeof(buffer));
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93
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if (ausb_submit_urb(ah, uurb)) {
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94
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fprintf(stderr, "unable to submit urb\n");
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95
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ausb_close(ah);
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96
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exit(1);
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97
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}
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98
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99
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while (1) {
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100
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sleep(10);
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101
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}
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102
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#endif
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103
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104
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ausb_close(ah);
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105
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106
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exit(0);
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107
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}
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