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comparison testugen.c @ 27:d5a265299a4b

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Test programs to talk to the hardware from a PC
author darius
date Mon, 10 Apr 2006 17:22:17 +0930
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26:350e8655cbb7 27:d5a265299a4b
1 #include <sys/types.h>
2 #include <sys/ioctl.h>
3 #include <dev/usb/usb.h>
4 #include <sys/errno.h>
5 #include <sys/uio.h>
6 #include <unistd.h>
7 #include <fcntl.h>
8 #include <stdio.h>
9
10 int
11 main(int argc, char **argv) {
12 int endpt2fd, i, len;
13 char *endpt2name = "/dev/ugen0.2";
14 uint8_t data[256];
15
16 if ((endpt2fd = open(endpt2name, O_RDWR)) == -1) {
17 fprintf(stderr, "Unable to open %s: %s\n", endpt2name, strerror(errno));
18 exit(1);
19 }
20
21 i = 1;
22 if (ioctl(endpt2fd, USB_SET_SHORT_XFER, &i) == -1) {
23 fprintf(stderr, "Unable to set short xfer on end point 2: %s\n", strerror(errno));
24 exit(1);
25 }
26
27 while(1) {
28 len = read(endpt2fd, data, 256);
29 printf("len = %d\n", len);
30 if (len == 0) {
31 printf("EOF\n");
32 continue;
33 }
34 if (len == -1) {
35 printf("read error: %s\n", strerror(errno));
36 exit(1);
37 }
38
39 for (i = 0; i < len; i++)
40 printf("0x%02x ", data[i]);
41 printf("\n");
42 }
43 }
44