932302ef |
1 | #include <stdio.h> |
2 | //#include <stdlib.h> |
3 | #include <string.h> |
4 | #include <stdint.h> |
5 | //#include <pthread.h> |
6 | #include <sys/types.h> |
7 | #include <sys/stat.h> |
8 | #include <fcntl.h> |
9 | #include <sys/ioctl.h> |
10 | #include <sys/select.h> |
11 | #include <unistd.h> |
12 | #include <dirent.h> |
13 | #include <errno.h> |
14 | #include <linux/usbdevice_fs.h> |
15 | #include <linux/usb/ch9.h> |
16 | |
17 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
18 | |
19 | #if 0 |
20 | #include "rawhid/hid.h" |
21 | |
22 | static int g_quit; |
23 | |
24 | static void *dbg_reader(void *arg) |
25 | { |
26 | char buf[65]; |
27 | int ret; |
28 | |
29 | buf[64] = 0; |
30 | |
31 | while (!g_quit) { |
32 | ret = rawhid_recv(0, buf, 64, 1000); |
33 | if (ret == 0) |
34 | continue; |
35 | |
36 | if (ret != 64) { |
37 | printf("\nrawhid_recv(dbg): %d\n", ret); |
38 | return NULL; |
39 | } |
40 | printf("%s", buf); |
41 | } |
42 | |
43 | // rawhid_close(0); |
44 | return NULL; |
45 | } |
46 | #endif |
47 | |
48 | struct teensy_dev { |
49 | int fd; |
50 | struct { |
51 | int ep_in; |
52 | int ep_out; |
53 | } ifaces[2]; |
54 | }; |
55 | |
56 | /* return 1 if founf, 0 if not, < 0 on error */ |
57 | static int find_device(struct teensy_dev *dev, |
58 | uint16_t vendor, uint16_t product) |
59 | { |
60 | const char path_root[] = "/dev/bus/usb"; |
61 | union { |
62 | struct usb_descriptor_header hdr; |
63 | struct usb_device_descriptor d; |
64 | struct usb_config_descriptor c; |
65 | struct usb_interface_descriptor i; |
66 | struct usb_endpoint_descriptor e; |
67 | char space[0x100]; /* enough? */ |
68 | } desc; |
69 | char path_bus[256], path_dev[256]; |
70 | struct dirent *ent, *ent_bus; |
71 | DIR *dir = NULL, *dir_bus = NULL; |
72 | int num, fd = -1; |
73 | int iface = -1; |
74 | int retval = -1; |
75 | int ret; |
76 | |
77 | memset(dev, 0xff, sizeof(*dev)); |
78 | |
79 | dir = opendir(path_root); |
80 | if (dir == NULL) { |
81 | perror("opendir"); |
82 | return -1; |
83 | } |
84 | |
85 | for (ent = readdir(dir); ent != NULL; ent = readdir(dir)) { |
86 | /* should be a number like 000 */ |
87 | if (sscanf(ent->d_name, "%03d", &num) != 1) |
88 | continue; |
89 | |
90 | snprintf(path_bus, sizeof(path_bus), "%s/%s", |
91 | path_root, ent->d_name); |
92 | |
93 | dir_bus = opendir(path_bus); |
94 | if (dir_bus == NULL) |
95 | continue; |
96 | |
97 | ent_bus = readdir(dir_bus); |
98 | for (; ent_bus != NULL; ent_bus = readdir(dir_bus)) { |
99 | if (sscanf(ent->d_name, "%03d", &num) != 1) |
100 | continue; |
101 | |
102 | snprintf(path_dev, sizeof(path_dev), "%s/%s/%s", |
103 | path_root, ent->d_name, ent_bus->d_name); |
104 | |
105 | fd = open(path_dev, O_RDWR); |
106 | if (fd == -1) |
107 | continue; |
108 | |
109 | ret = read(fd, &desc.d, sizeof(desc.d)); |
110 | if (ret != sizeof(desc.d)) { |
111 | fprintf(stderr, "desc read: %d/%zd: ", ret, sizeof(desc.d)); |
112 | perror(""); |
113 | goto next; |
114 | } |
115 | |
116 | if (desc.d.bDescriptorType != USB_DT_DEVICE) { |
117 | fprintf(stderr, "%s: bad DT: 0x%02x\n", |
118 | path_dev, desc.d.bDescriptorType); |
119 | goto next; |
120 | } |
121 | |
122 | if (desc.d.idVendor == vendor && desc.d.idProduct == product) |
123 | goto found; |
124 | |
125 | next: |
126 | close(fd); |
127 | fd = -1; |
128 | } |
129 | |
130 | closedir(dir_bus); |
131 | dir_bus = NULL; |
132 | } |
133 | |
134 | /* not found */ |
135 | retval = 0; |
136 | goto out; |
137 | |
138 | found: |
139 | if (desc.d.bNumConfigurations != 1) { |
140 | fprintf(stderr, "unexpected bNumConfigurations: %u\n", |
141 | desc.d.bNumConfigurations); |
142 | goto out; |
143 | } |
144 | |
145 | /* walk through all descriptors */ |
146 | while (1) |
147 | { |
148 | ret = read(fd, &desc.hdr, sizeof(desc.hdr)); |
149 | if (ret == 0) |
150 | break; |
151 | if (ret != sizeof(desc.hdr)) { |
152 | fprintf(stderr, "desc.hdr read: %d/%zd: ", ret, sizeof(desc.hdr)); |
153 | perror(""); |
154 | break; |
155 | } |
156 | |
157 | ret = (int)lseek(fd, -sizeof(desc.hdr), SEEK_CUR); |
158 | if (ret == -1) { |
159 | perror("lseek"); |
160 | break; |
161 | } |
162 | |
163 | ret = read(fd, &desc, desc.hdr.bLength); |
164 | if (ret != desc.hdr.bLength) { |
165 | fprintf(stderr, "desc read: %d/%u: ", ret, desc.hdr.bLength); |
166 | perror(""); |
167 | break; |
168 | } |
169 | |
170 | switch (desc.hdr.bDescriptorType) { |
171 | case USB_DT_CONFIG: |
172 | if (desc.c.bNumInterfaces != 2) { |
173 | fprintf(stderr, "unexpected bNumInterfaces: %u\n", |
174 | desc.c.bNumInterfaces); |
175 | goto out; |
176 | } |
177 | break; |
178 | |
179 | case USB_DT_INTERFACE: |
180 | if (desc.i.bInterfaceClass != USB_CLASS_HID |
181 | || desc.i.bInterfaceSubClass != 0 |
182 | || desc.i.bInterfaceProtocol != 0) { |
183 | fprintf(stderr, "unexpected interface %x:%x:%x\n", |
184 | desc.i.bInterfaceClass, desc.i.bInterfaceSubClass, |
185 | desc.i.bInterfaceProtocol); |
186 | goto out; |
187 | } |
188 | if (desc.i.bNumEndpoints != 2) { |
189 | fprintf(stderr, "unexpected bNumEndpoints: %u\n", |
190 | desc.i.bNumEndpoints); |
191 | goto out; |
192 | } |
193 | iface++; |
194 | break; |
195 | |
196 | case USB_DT_ENDPOINT: |
197 | if (iface < 0 || iface >= ARRAY_SIZE(dev->ifaces)) { |
198 | fprintf(stderr, "bad iface: %d\n", iface); |
199 | goto out; |
200 | } |
201 | if (desc.e.wMaxPacketSize != 64 && desc.e.wMaxPacketSize != 32) { |
202 | fprintf(stderr, "iface %d, EP %02x: " |
203 | "unexpected wMaxPacketSize: %u\n", |
204 | iface, desc.e.bEndpointAddress, desc.e.wMaxPacketSize); |
205 | goto out; |
206 | } |
207 | if (desc.e.bEndpointAddress & 0x80) |
208 | dev->ifaces[iface].ep_in = desc.e.bEndpointAddress; // & 0x7F; |
209 | else |
210 | dev->ifaces[iface].ep_out = desc.e.bEndpointAddress; |
211 | break; |
212 | |
213 | case 0x21: |
214 | /* ignore */ |
215 | break; |
216 | |
217 | default: |
218 | fprintf(stderr, "skipping desc 0x%02x\n", |
219 | desc.hdr.bDescriptorType); |
220 | break; |
221 | } |
222 | } |
223 | |
224 | /* claim interfaces */ |
225 | for (iface = 0; iface < ARRAY_SIZE(dev->ifaces); iface++) { |
226 | struct usbdevfs_ioctl usbio; |
227 | |
228 | if (dev->ifaces[iface].ep_in == -1) { |
229 | fprintf(stderr, "missing ep_in, iface: %d\n", iface); |
230 | goto out; |
231 | } |
232 | if (dev->ifaces[iface].ep_out == -1) { |
233 | fprintf(stderr, "missing ep_out, iface: %d\n", iface); |
234 | goto out; |
235 | } |
236 | |
237 | /* disconnect default driver */ |
238 | memset(&usbio, 0, sizeof(usbio)); |
239 | usbio.ifno = iface; |
240 | usbio.ioctl_code = USBDEVFS_DISCONNECT; |
241 | ret = ioctl(fd, USBDEVFS_IOCTL, &usbio); |
242 | if (ret != 0 && errno != ENODATA) |
243 | perror("USBDEVFS_DISCONNECT"); |
244 | |
245 | ret = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &iface); |
246 | if (ret != 0) |
247 | perror("USBDEVFS_CLAIMINTERFACE"); |
248 | } |
249 | |
250 | dev->fd = fd; |
251 | fd = -1; |
252 | retval = 1; |
253 | |
254 | out: |
255 | if (fd != -1) |
256 | close(fd); |
257 | if (dir_bus != NULL) |
258 | closedir(dir_bus); |
259 | if (dir != NULL) |
260 | closedir(dir); |
261 | |
262 | return retval; |
263 | } |
264 | |
265 | enum my_urbs { |
266 | URB_DATA_IN, |
267 | URB_DATA_OUT, |
268 | URB_DBG_IN, |
269 | URB_CNT |
270 | }; |
271 | |
272 | int main(int argc, char *argv[]) |
273 | { |
274 | struct teensy_dev dev; |
275 | struct usbdevfs_urb urb[URB_CNT]; |
276 | struct usbdevfs_urb *reaped_urb; |
277 | char buf_dbg[64 + 1], buf_in[64]; |
278 | int wait_device = 0; |
279 | int dbg_in_sent = 0; |
280 | int data_in_sent = 0; |
281 | fd_set wfds; |
282 | int ret; |
283 | |
284 | dev.fd = -1; |
285 | |
286 | while (1) |
287 | { |
288 | if (dev.fd == -1) { |
289 | ret = find_device(&dev, 0x16C0, 0x0486); |
290 | if (ret < 0) |
291 | return ret; |
292 | |
293 | if (ret == 0) { |
294 | if (!wait_device) { |
295 | printf("waiting for device..\n"); |
296 | wait_device = 1; |
297 | } |
298 | usleep(250000); |
299 | continue; |
300 | } |
301 | |
302 | wait_device = 0; |
303 | data_in_sent = 0; |
304 | dbg_in_sent = 0; |
305 | } |
306 | |
307 | if (!data_in_sent) { |
308 | memset(&urb[URB_DATA_IN], 0, sizeof(urb[URB_DATA_IN])); |
309 | urb[URB_DATA_IN].type = USBDEVFS_URB_TYPE_INTERRUPT; |
310 | urb[URB_DATA_IN].endpoint = dev.ifaces[0].ep_in; |
311 | urb[URB_DATA_IN].buffer = buf_in; |
312 | urb[URB_DATA_IN].buffer_length = sizeof(buf_in); |
313 | |
314 | ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DATA_IN]); |
315 | if (ret != 0) { |
316 | perror("USBDEVFS_SUBMITURB URB_DATA_IN"); |
317 | return 1; |
318 | } |
319 | data_in_sent = 1; |
320 | } |
321 | if (!dbg_in_sent) { |
322 | memset(&urb[URB_DBG_IN], 0, sizeof(urb[URB_DBG_IN])); |
323 | urb[URB_DBG_IN].type = USBDEVFS_URB_TYPE_INTERRUPT; |
324 | urb[URB_DBG_IN].endpoint = dev.ifaces[1].ep_in; |
325 | urb[URB_DBG_IN].buffer = buf_dbg; |
326 | urb[URB_DBG_IN].buffer_length = sizeof(buf_dbg) - 1; |
327 | |
328 | ret = ioctl(dev.fd, USBDEVFS_SUBMITURB, &urb[URB_DBG_IN]); |
329 | if (ret != 0) { |
330 | perror("USBDEVFS_SUBMITURB URB_DBG_IN"); |
331 | return 1; |
332 | } |
333 | dbg_in_sent = 1; |
334 | } |
335 | |
336 | FD_ZERO(&wfds); |
337 | FD_SET(dev.fd, &wfds); |
338 | |
339 | ret = select(dev.fd + 1, NULL, &wfds, NULL, NULL); |
340 | if (ret < 0) { |
341 | perror("select"); |
342 | return 1; |
343 | } |
344 | |
345 | if (FD_ISSET(dev.fd, &wfds)) { |
346 | reaped_urb = NULL; |
347 | ret = ioctl(dev.fd, USBDEVFS_REAPURB, &reaped_urb); |
348 | if (ret != 0) { |
349 | if (errno == ENODEV) |
350 | goto dev_close; |
351 | perror("USBDEVFS_REAPURB"); |
352 | return 1; |
353 | } |
354 | |
355 | if (reaped_urb != NULL && reaped_urb->status != 0) { |
356 | errno = -reaped_urb->status; |
357 | perror("urb status"); |
358 | if (reaped_urb->status == -EILSEQ) { |
359 | /* this is usually a sign of disconnect.. */ |
360 | usleep(250000); |
361 | goto dev_close; |
362 | } |
363 | } |
364 | |
365 | if (reaped_urb == &urb[URB_DATA_IN]) { |
366 | printf("*data*\n"); |
367 | data_in_sent = 0; |
368 | } |
369 | else if (reaped_urb == &urb[URB_DBG_IN]) { |
370 | /* debug text */ |
371 | buf_dbg[reaped_urb->actual_length] = 0; |
372 | printf("%s", buf_dbg); |
373 | dbg_in_sent = 0; |
374 | } |
375 | else { |
376 | fprintf(stderr, "reaped unknown urb? %p\n", reaped_urb); |
377 | } |
378 | } |
379 | continue; |
380 | |
381 | dev_close: |
382 | close(dev.fd); |
383 | dev.fd = -1; |
384 | } |
385 | |
386 | #if 0 |
387 | ret = rawhid_open(1, 0x16C0, 0x0486, 0xFFC9, 0x0004); |
388 | if (ret <= 0) { |
389 | fprintf(stderr, "dbg rawhid is missing\n"); |
390 | return 1; |
391 | } |
392 | |
393 | ret = rawhid_open(1, 0x16C0, 0x0486, 0xFFAB, 0x0200); |
394 | if (ret <= 0) { |
395 | fprintf(stderr, "data rawhid is missing\n"); |
396 | return 1; |
397 | } |
398 | |
399 | pthread_t thread; |
400 | ret = pthread_create(&thread, NULL, dbg_reader, NULL); |
401 | if (ret) { |
402 | fprintf(stderr, "pthread_create failed: %d\n", ret); |
403 | return 1; |
404 | } |
405 | |
406 | memset(buf, 0, sizeof(buf)); |
407 | snprintf(buf, sizeof(buf), "hi"); |
408 | |
409 | ret = rawhid_send(1, buf, 64, 220); |
410 | if (ret != 64) { |
411 | fprintf(stderr, "send failed: %d\n", ret); |
412 | } |
413 | |
414 | while (1) { |
415 | // check if any Raw HID packet has arrived |
416 | ret = rawhid_recv(1, buf, 64, 220); |
417 | if (ret < 0) { |
418 | fprintf(stderr, "\nrawhid_recv(1): %d\n", ret); |
419 | break; |
420 | } |
421 | if (ret > 0) { |
422 | printf("\nrecv %d bytes:\n", ret); |
423 | for (i=0; i<ret; i++) { |
424 | printf("%02X ", buf[i] & 255); |
425 | if (i % 16 == 15 && i < ret-1) printf("\n"); |
426 | } |
427 | printf("\n"); |
428 | } |
429 | } |
430 | |
431 | // rawhid_close(1); |
432 | |
433 | g_quit = 1; |
434 | pthread_join(thread, NULL); |
435 | #endif |
436 | |
437 | return 0; |
438 | } |
439 | |
440 | // vim: ts=2:sw=2:expandtab |