1 /* ----------------------------------------------------------------------------
2 * "THE BEER-WARE LICENSE" (Revision 42) (by Poul-Henning Kamp):
3 * <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
4 * can do whatever you want with this stuff. If we meet some day, and you think
5 * this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
6 * ----------------------------------------------------------------------------
12 * Simple demo program to illustrate the handling of FreeBSD's
20 * Just list all VID:PID pairs
23 * Standard device request GET_STATUS, report two bytes of status
24 * (bit 0 in the first byte returned is the "self powered" bit)
25 * ./control -v 0x3eb -p 0x2103 in std dev get_status 0 0 2
27 * Request input reports through the interrupt pipe from a mouse
28 * device (move the mouse around after issuing the command):
29 * ./control -v 0x093a -p 0x2516 -i 0x81
43 #include <libusb20_desc.h>
45 #include <sys/queue.h>
48 * If you want to see the details of the internal datastructures
49 * in the debugger, unifdef the following.
52 # include "/usr/src/lib/libusb/libusb20_int.h"
57 #define TIMEOUT 5000 /* 5 s */
59 int intr_ep; /* endpoints */
60 struct LIBUSB20_CONTROL_SETUP_DECODED setup;
62 uint8_t out_buf[BUFLEN];
68 doit(struct libusb20_device *dev)
73 printf("doit(): bmRequestType 0x%02x, bRequest 0x%02x, wValue 0x%04x, wIndex 0x%04x, wLength 0x%04x\n",
81 * Open the device, allocating memory for two possible (bulk or
82 * interrupt) transfers.
84 * If only control transfers are intended (via
85 * libusb20_dev_request_sync()), transfer_max can be given as 0.
87 if ((rv = libusb20_dev_open(dev, 1)) != 0)
89 fprintf(stderr, "libusb20_dev_open: %s\n", usb_error(rv));
94 * If the device has more than one configuration, select the desired
97 if ((rv = libusb20_dev_set_config_index(dev, 0)) != 0)
99 fprintf(stderr, "libusb20_dev_set_config_index: %s\n", usb_error(rv));
106 if ((setup.bmRequestType & 0x80) != 0)
108 /* this is an IN request, allocate a buffer */
109 data = malloc(setup.wLength);
113 "Out of memory allocating %u bytes of reply buffer\n",
123 if ((rv = libusb20_dev_request_sync(dev, &setup, data,
126 0 /* flags */)) != 0)
129 "libusb20_dev_request_sync: %s\n", usb_error(rv));
131 printf("sent %d bytes\n", actlen);
132 if ((setup.bmRequestType & 0x80) != 0)
134 print_formatted(data, (uint32_t)setup.wLength);
142 * One transfer has been requested in libusb20_dev_open() above;
143 * obtain the corresponding transfer struct pointer.
145 struct libusb20_transfer *xfr_intr = libusb20_tr_get_pointer(dev, 0);
147 if (xfr_intr == NULL)
149 fprintf(stderr, "libusb20_tr_get_pointer: %s\n", usb_error(rv));
154 * Open the interrupt transfer.
156 if ((rv = libusb20_tr_open(xfr_intr, 0, 1, intr_ep)) != 0)
158 fprintf(stderr, "libusb20_tr_open: %s\n", usb_error(rv));
162 uint8_t in_buf[BUFLEN];
165 if ((rv = libusb20_tr_bulk_intr_sync(xfr_intr, in_buf, BUFLEN, &rlen, TIMEOUT))
168 fprintf(stderr, "libusb20_tr_bulk_intr_sync: %s\n", usb_error(rv));
170 printf("received %d bytes\n", rlen);
172 print_formatted(in_buf, rlen);
174 libusb20_tr_close(xfr_intr);
177 libusb20_dev_close(dev);
184 "Usage ./usb [-i <INTR_EP>] -v <VID> -p <PID> [dir type rcpt req wValue wIndex wLength [<outdata> ...]]\n");
188 static const char *reqnames[] =
206 get_req(const char *reqname)
209 size_t l = strlen(reqname);
212 i < sizeof reqnames / sizeof reqnames[0];
214 if (strncasecmp(reqname, reqnames[i], l) == 0)
217 return strtoul(reqname, 0, 0);
222 parse_req(int argc, char **argv)
227 for (idx = 0; argc != 0 && idx <= 6; argc--, idx++)
231 /* dir[ection]: i[n] | o[ut] */
232 if (*argv[idx] == 'i')
234 else if (*argv[idx] == 'o')
238 fprintf(stderr, "request direction must be \"in\" or \"out\" (got %s)\n",
245 /* type: s[tandard] | c[lass] | v[endor] */
246 if (*argv[idx] == 's')
248 else if (*argv[idx] == 'c')
250 else if (*argv[idx] == 'v')
255 "request type must be one of \"standard\", \"class\", or \"vendor\" (got %s)\n",
262 /* rcpt: d[evice], i[nterface], e[ndpoint], o[ther] */
263 if (*argv[idx] == 'd')
265 else if (*argv[idx] == 'i')
267 else if (*argv[idx] == 'e')
269 else if (*argv[idx] == 'o')
274 "recipient must be one of \"device\", \"interface\", \"endpoint\", or \"other\" (got %s)\n",
278 setup.bmRequestType = rt;
282 setup.bRequest = get_req(argv[idx]);
286 setup.wValue = strtoul(argv[idx], 0, 0);
290 setup.wIndex = strtoul(argv[idx], 0, 0);
294 setup.wLength = strtoul(argv[idx], 0, 0);
303 main(int argc, char **argv)
305 unsigned int vid = UINT_MAX, pid = UINT_MAX; /* impossible VID:PID */
309 * Initialize setup struct. This step is required, and initializes
310 * internal fields in the struct.
312 * All the "public" fields are named exactly the way as the USB
313 * standard describes them, namely:
315 * setup.bmRequestType: bitmask, bit 7 is direction
316 * bits 6/5 is request type
317 * (standard, class, vendor)
318 * bits 4..0 is recipient
319 * (device, interface, endpoint,
321 * setup.bRequest: the request itself (see get_req() for standard
322 * requests, or specific value)
323 * setup.wValue: a 16-bit value
324 * setup.wIndex: another 16-bit value
325 * setup.wLength: length of associated data transfer, direction
326 * depends on bit 7 of bmRequestType
328 LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &setup);
330 while ((c = getopt(argc, argv, "i:p:v:")) != -1)
334 intr_ep = strtol(optarg, NULL, 0);
338 pid = strtol(optarg, NULL, 0);
342 vid = strtol(optarg, NULL, 0);
352 if (vid != UINT_MAX || pid != UINT_MAX)
354 if (intr_ep != 0 && (intr_ep & 0x80) == 0)
356 fprintf(stderr, "Interrupt endpoint must be of type IN\n");
364 int rv = parse_req(argc, argv);
371 for (out_len = 0; argc > 0 && out_len < BUFLEN; out_len++, argc--)
373 unsigned n = strtoul(argv[out_len], 0, 0);
376 "Warning: data #%d 0x%0x > 0xff, truncating\n",
378 out_buf[out_len] = (uint8_t)n;
383 "Data count exceeds maximum of %d, ignoring %d elements\n",
389 struct libusb20_backend *be;
390 struct libusb20_device *dev;
392 if ((be = libusb20_be_alloc_default()) == NULL)
394 perror("libusb20_be_alloc()");
399 while ((dev = libusb20_be_device_foreach(be, dev)) != NULL)
401 struct LIBUSB20_DEVICE_DESC_DECODED *ddp =
402 libusb20_dev_get_device_desc(dev);
404 printf("Found device %s (VID:PID = 0x%04x:0x%04x)\n",
405 libusb20_dev_get_desc(dev),
406 ddp->idVendor, ddp->idProduct);
408 if (ddp->idVendor == vid && ddp->idProduct == pid)
412 libusb20_be_free(be);