récupérer l'état de la souris depuis le driver Linux [résolu]

récupérer l'état de la souris depuis le driver Linux [résolu] - C - Programmation

Marsh Posté le 23-08-2004 à 08:34:05    

Bonjour,  
pour compléter le titre, je dirais que j'ai tout d'abord fait mon affaire via le serveur de souris gpm ce qui a pour le moment bien fonctionné. Cependant, j'ai porté mon application sur une autre carte mère pc104 qui partage son port ps/2 entre clavier et souris, et la ca marche bcp moins bien: il faut absolument que je bouge la souris lorsque gpm se lance, faute de quoi  cette dernière n'est pas reconnue...ce n'est évidement pas souhaité.
Je me suis donc attaqué à la récupération de ces informations au niveau du driver Linux "/usr/src/linux/drivers/input/mousedev.c" dont je vous fais une copie  ici :  
 

Code :
  1. /*
  2. * $Id: mousedev.c,v 1.24 2000/11/15 10:57:45 vojtech Exp $
  3. *
  4. *  Copyright (c) 1999-2000 Vojtech Pavlik
  5. *
  6. *  Input driver to ImExPS/2 device driver module.
  7. *
  8. *  Sponsored by SuSE
  9. */
  11. /*
  12. * This program is free software; you can redistribute it and/or modify
  13. * it under the terms of the GNU General Public License as published by
  14. * the Free Software Foundation; either version 2 of the License, or  
  15. * (at your option) any later version.
  16. *  
  17. * This program is distributed in the hope that it will be useful,
  18. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20. * GNU General Public License for more details.
  21. *  
  22. * You should have received a copy of the GNU General Public License
  23. * along with this program; if not, write to the Free Software
  24. * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25. *  
  26. * Should you need to contact me, the author, you can do so either by
  27. * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
  28. * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
  29. */
  31. #define MOUSEDEV_MINOR_BASE  32
  32. #define MOUSEDEV_MINORS  32
  33. #define MOUSEDEV_MIX  31
  35. #include <linux/slab.h>
  36. #include <linux/poll.h>
  37. #include <linux/module.h>
  38. #include <linux/init.h>
  39. #include <linux/input.h>
  40. #include <linux/config.h>
  41. #include <linux/smp_lock.h>
  42. #include <linux/random.h>
  44. #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X
  45. #define CONFIG_INPUT_MOUSEDEV_SCREEN_X 1024
  46. #endif
  47. #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y
  48. #define CONFIG_INPUT_MOUSEDEV_SCREEN_Y 768
  49. #endif
  51. struct mousedev {
  52. int exist;
  53. int open;
  54. int minor;
  55. wait_queue_head_t wait;
  56. struct mousedev_list *list;
  57. struct input_handle handle;
  58. devfs_handle_t devfs;
  59. };
  61. struct mousedev_list {
  62. struct fasync_struct *fasync;
  63. struct mousedev *mousedev;
  64. struct mousedev_list *next;
  65. int dx, dy, dz, oldx, oldy;
  66. signed char ps2[6];
  67. unsigned long buttons;
  68. unsigned char ready, buffer, bufsiz;
  69. unsigned char mode, imexseq, impsseq;
  70. };
  72. #define MOUSEDEV_SEQ_LEN 6
  74. static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 };
  75. static unsigned char mousedev_imex_seq[] = { 0xf3, 200, 0xf3, 200, 0xf3, 80 };
  77. static struct input_handler mousedev_handler;
  79. static struct mousedev *mousedev_table[MOUSEDEV_MINORS];
  80. static struct mousedev mousedev_mix;
  82. static int xres = CONFIG_INPUT_MOUSEDEV_SCREEN_X;
  83. static int yres = CONFIG_INPUT_MOUSEDEV_SCREEN_Y;
  85. static void mousedev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
  86. {
  87. struct mousedev *mousedevs[3] = { handle->private, &mousedev_mix, NULL };
  88. struct mousedev **mousedev = mousedevs;
  89. struct mousedev_list *list;
  90. int index, size;
  92. add_mouse_randomness((type << 4) ^ code ^ (code >> 4) ^ value);
  94. while (*mousedev) {
  95.  list = (*mousedev)->list;
  96.  while (list) {
  97.   switch (type) {
  98.    case EV_ABS:
  99.     if (test_bit(BTN_TRIGGER, handle->dev->keybit))
  100.      break;
  101.     switch (code) {
  102.      case ABS_X:
  103.       size = handle->dev->absmax[ABS_X] - handle->dev->absmin[ABS_X];
  104.       list->dx += (value * xres - list->oldx) / size;
  105.       list->oldx += list->dx * size;
  106.       break;
  107.      case ABS_Y:
  108.       size = handle->dev->absmax[ABS_Y] - handle->dev->absmin[ABS_Y];
  109.       list->dy -= (value * yres - list->oldy) / size;
  110.       list->oldy -= list->dy * size;
  111.       break;
  112.     }
  113.     break;
  115.    case EV_REL:
  116.     switch (code) {
  117.      case REL_X: list->dx += value; break;
  118.      case REL_Y: list->dy -= value; break;
  119.      case REL_WHEEL: if (list->mode) list->dz -= value; break;
  120.     }
  121.     break;
  123.    case EV_KEY:
  124.     switch (code) {
  125.      case BTN_0:
  126.      case BTN_TOUCH:
  127.      case BTN_LEFT:   index = 0; break;
  128.      case BTN_4:
  129.      case BTN_EXTRA:  if (list->mode == 2) { index = 4; break; }
  130.      case BTN_STYLUS:
  131.      case BTN_1:
  132.      case BTN_RIGHT:  index = 1; break;
  133.      case BTN_3:
  134.      case BTN_SIDE:   if (list->mode == 2) { index = 3; break; }
  135.      case BTN_2:
  136.      case BTN_STYLUS2:
  137.      case BTN_MIDDLE: index = 2; break;
  138.      default: return;
  139.     }
  140.     switch (value) {
  141.      case 0: clear_bit(index, &list->buttons); break;
  142.      case 1: set_bit(index, &list->buttons); break;
  143.      case 2: return;
  144.     }
  145.     break;
  146.   }
  148.   list->ready = 1;
  150.   kill_fasync(&list->fasync, SIGIO, POLL_IN);
  152.   list = list->next;
  153.  }
  155.  wake_up_interruptible(&((*mousedev)->wait));
  156.  mousedev++;
  157. }
  158. }
  160. static int mousedev_fasync(int fd, struct file *file, int on)
  161. {
  162. int retval;
  163. struct mousedev_list *list = file->private_data;
  164. retval = fasync_helper(fd, file, on, &list->fasync);
  165. return retval < 0 ? retval : 0;
  166. }
  168. static int mousedev_release(struct inode * inode, struct file * file)
  169. {
  170. struct mousedev_list *list = file->private_data;
  171. struct mousedev_list **listptr;
  173. lock_kernel();
  174. listptr = &list->mousedev->list;
  175. mousedev_fasync(-1, file, 0);
  177. while (*listptr && (*listptr != list))
  178.  listptr = &((*listptr)->next);
  179. *listptr = (*listptr)->next;
  181. if (!--list->mousedev->open) {
  182.  if (list->mousedev->minor == MOUSEDEV_MIX) {
  183.   struct input_handle *handle = mousedev_handler.handle;
  184.   while (handle) {
  185.    struct mousedev *mousedev = handle->private;
  186.    if (!mousedev->open) {
  187.     if (mousedev->exist) {
  188.      input_close_device(&mousedev->handle);
  189.     } else {
  190.      input_unregister_minor(mousedev->devfs);
  191.      mousedev_table[mousedev->minor] = NULL;
  192.      kfree(mousedev);
  193.     }
  194.    }
  195.    handle = handle->hnext;
  196.   }
  197.  } else {
  198.   if (!mousedev_mix.open) {
  199.    if (list->mousedev->exist) {
  200.     input_close_device(&list->mousedev->handle);
  201.    } else {
  202.     input_unregister_minor(list->mousedev->devfs);
  203.     mousedev_table[list->mousedev->minor] = NULL;
  204.     kfree(list->mousedev);
  205.    }
  206.   }
  207.  }
  208. }
  210. kfree(list);
  211. unlock_kernel();
  213. return 0;
  214. }
  216. static int mousedev_open(struct inode * inode, struct file * file)
  217. {
  218. struct mousedev_list *list;
  219. int i = MINOR(inode->i_rdev) - MOUSEDEV_MINOR_BASE;
  221. if (i >= MOUSEDEV_MINORS || !mousedev_table[i])
  222.  return -ENODEV;
  224. if (!(list = kmalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
  225.  return -ENOMEM;
  226. memset(list, 0, sizeof(struct mousedev_list));
  228. list->mousedev = mousedev_table[i];
  229. list->next = mousedev_table[i]->list;
  230. mousedev_table[i]->list = list;
  231. file->private_data = list;
  233. if (!list->mousedev->open++) {
  234.  if (list->mousedev->minor == MOUSEDEV_MIX) {
  235.   struct input_handle *handle = mousedev_handler.handle;
  236.   while (handle) {
  237.    struct mousedev *mousedev = handle->private;
  238.    if (!mousedev->open)
  239.     if (mousedev->exist)
  240.      input_open_device(handle);
  241.    handle = handle->hnext;
  242.   }
  243.  } else {
  244.   if (!mousedev_mix.open)
  245.    if (list->mousedev->exist)
  246.     input_open_device(&list->mousedev->handle);
  247.  }
  248. }
  250. return 0;
  251. }
  253. static void mousedev_packet(struct mousedev_list *list, unsigned char off)
  254. {
  255. list->ps2[off] = 0x08 | ((list->dx < 0) << 4) | ((list->dy < 0) << 5) | (list->buttons & 0x07);
  256. list->ps2[off + 1] = (list->dx > 127 ? 127 : (list->dx < -127 ? -127 : list->dx));
  257. list->ps2[off + 2] = (list->dy > 127 ? 127 : (list->dy < -127 ? -127 : list->dy));
  258. list->dx -= list->ps2[off + 1];
  259. list->dy -= list->ps2[off + 2];
  260. list->bufsiz = off + 3;
  262. if (list->mode == 2) {
  263.  list->ps2[off + 3] = (list->dz > 7 ? 7 : (list->dz < -7 ? -7 : list->dz));
  264.  list->dz -= list->ps2[off + 3];
  265.  list->ps2[off + 3] = (list->ps2[off + 3] & 0x0f) | ((list->buttons & 0x18) << 1);
  266.  list->bufsiz++;
  267. }
  269. if (list->mode == 1) {
  270.  list->ps2[off + 3] = (list->dz > 127 ? 127 : (list->dz < -127 ? -127 : list->dz));
  271.  list->dz -= list->ps2[off + 3];
  272.  list->bufsiz++;
  273. }
  275. if (!list->dx && !list->dy && (!list->mode || !list->dz)) list->ready = 0;
  276. list->buffer = list->bufsiz;
  277. }
  280. static ssize_t mousedev_write(struct file * file, const char * buffer, size_t count, loff_t *ppos)
  281. {
  282. struct mousedev_list *list = file->private_data;
  283. unsigned char c;
  284. int i;
  286. for (i = 0; i < count; i++) {
  288.  if (get_user(c, buffer + i))
  289.   return -EFAULT;
  291.  if (c == mousedev_imex_seq[list->imexseq]) {
  292.   if (++list->imexseq == MOUSEDEV_SEQ_LEN) {
  293.    list->imexseq = 0;
  294.    list->mode = 2;
  295.   }
  296.  } else list->imexseq = 0;
  298.  if (c == mousedev_imps_seq[list->impsseq]) {
  299.   if (++list->impsseq == MOUSEDEV_SEQ_LEN) {
  300.    list->impsseq = 0;
  301.    list->mode = 1;
  302.   }
  303.  } else list->impsseq = 0;
  305.  list->ps2[0] = 0xfa;
  306.  list->bufsiz = 1;
  307.  list->ready = 1;
  309.  switch (c) {
  311.   case 0xeb: /* Poll */
  312.    mousedev_packet(list, 1);
  313.    break;
  315.   case 0xf2: /* Get ID */
  316.    switch (list->mode) {
  317.     case 0: list->ps2[1] = 0; break;
  318.     case 1: list->ps2[1] = 3; break;
  319.     case 2: list->ps2[1] = 4; break;
  320.    }
  321.    list->bufsiz = 2;
  322.    break;
  324.   case 0xe9: /* Get info */
  325.    list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200;
  326.    list->bufsiz = 4;
  327.    break;
  328.  }
  330.  list->buffer = list->bufsiz;
  331. }
  333. kill_fasync(&list->fasync, SIGIO, POLL_IN);
  335. wake_up_interruptible(&list->mousedev->wait);
  337. return count;
  338. }
  340. static ssize_t mousedev_read(struct file * file, char * buffer, size_t count, loff_t *ppos)
  341. {
  342. DECLARE_WAITQUEUE(wait, current);
  343. struct mousedev_list *list = file->private_data;
  344. int retval = 0;
  346. if (!list->ready && !list->buffer) {
  348.  add_wait_queue(&list->mousedev->wait, &wait);
  349.  current->state = TASK_INTERRUPTIBLE;
  351.  while (!list->ready) {
  353.   if (file->f_flags & O_NONBLOCK) {
  354.    retval = -EAGAIN;
  355.    break;
  356.   }
  357.   if (signal_pending(current)) {
  358.    retval = -ERESTARTSYS;
  359.    break;
  360.   }
  362.   schedule();
  363.  }
  365.  current->state = TASK_RUNNING;
  366.  remove_wait_queue(&list->mousedev->wait, &wait);
  367. }
  369. if (retval)
  370.  return retval;
  372. if (!list->buffer)
  373.  mousedev_packet(list, 0);
  375. if (count > list->buffer)
  376.  count = list->buffer;
  378. if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer, count))
  379.  return -EFAULT;
  381. list->buffer -= count;
  383. return count;
  384. }
  386. /* No kernel lock - fine */
  387. static unsigned int mousedev_poll(struct file *file, poll_table *wait)
  388. {
  389. struct mousedev_list *list = file->private_data;
  390. poll_wait(file, &list->mousedev->wait, wait);
  391. if (list->ready || list->buffer)
  392.  return POLLIN | POLLRDNORM;
  393. return 0;
  394. }
  396. struct file_operations mousedev_fops = {
  397. owner:  THIS_MODULE,
  398. read:  mousedev_read,
  399. write:  mousedev_write,
  400. poll:  mousedev_poll,
  401. open:  mousedev_open,
  402. release: mousedev_release,
  403. fasync:  mousedev_fasync,
  404. };
  406. static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev)
  407. {
  408. struct mousedev *mousedev;
  409. int minor = 0;
  411. if (!test_bit(EV_KEY, dev->evbit) ||
  412.     (!test_bit(BTN_LEFT, dev->keybit) &&
  413.      !test_bit(BTN_MIDDLE, dev->keybit) &&
  414.      !test_bit(BTN_TOUCH, dev->keybit)))
  415.  return NULL;
  417. if ((!test_bit(EV_REL, dev->evbit) || !test_bit(REL_X, dev->relbit)) &&
  418.     (!test_bit(EV_REL, dev->evbit) || !test_bit(REL_WHEEL, dev->relbit)) &&
  419.     (!test_bit(EV_ABS, dev->evbit) || !test_bit(ABS_X, dev->absbit)))
  420.  return NULL;
  422. for (minor = 0; minor < MOUSEDEV_MINORS && mousedev_table[minor]; minor++);
  423. if (minor == MOUSEDEV_MINORS) {
  424.  printk(KERN_ERR "mousedev: no more free mousedev devices\n" );
  425.  return NULL;
  426. }
  428. if (!(mousedev = kmalloc(sizeof(struct mousedev), GFP_KERNEL)))
  429.  return NULL;
  430. memset(mousedev, 0, sizeof(struct mousedev));
  431. init_waitqueue_head(&mousedev->wait);
  433. mousedev->exist = 1;
  434. mousedev->minor = minor;
  435. mousedev_table[minor] = mousedev;
  437. mousedev->handle.dev = dev;
  438. mousedev->handle.handler = handler;
  439. mousedev->handle.private = mousedev;
  441. mousedev->devfs = input_register_minor("mouse%d", minor, MOUSEDEV_MINOR_BASE);
  443. if (mousedev_mix.open)
  444.  input_open_device(&mousedev->handle);
  446. // printk(KERN_INFO "mouse%d: PS/2 mouse device for input%d\n", minor, dev->number);
  448. return &mousedev->handle;
  449. }
  451. static void mousedev_disconnect(struct input_handle *handle)
  452. {
  453. struct mousedev *mousedev = handle->private;
  455. mousedev->exist = 0;
  457. if (mousedev->open) {
  458.  input_close_device(handle);
  459. } else {
  460.  if (mousedev_mix.open)
  461.   input_close_device(handle);
  462.  input_unregister_minor(mousedev->devfs);
  463.  mousedev_table[mousedev->minor] = NULL;
  464.  kfree(mousedev);
  465. }
  466. }
  468. static struct input_handler mousedev_handler = {
  469. event:  mousedev_event,
  470. connect: mousedev_connect,
  471. disconnect: mousedev_disconnect,
  472. fops:  &mousedev_fops,
  473. minor:  MOUSEDEV_MINOR_BASE,
  474. };
  476. static int __init mousedev_init(void)
  477. {
  478. input_register_handler(&mousedev_handler);
  480. memset(&mousedev_mix, 0, sizeof(struct mousedev));
  481. init_waitqueue_head(&mousedev_mix.wait);
  482. mousedev_table[MOUSEDEV_MIX] = &mousedev_mix;
  483. mousedev_mix.exist = 1;
  484. mousedev_mix.minor = MOUSEDEV_MIX;
  485. mousedev_mix.devfs = input_register_minor("mice", MOUSEDEV_MIX, MOUSEDEV_MINOR_BASE);
  487. printk(KERN_INFO "mice: PS/2 mouse device common for all mice\n" );
  489. return 0;
  490. }
  492. static void __exit mousedev_exit(void)
  493. {
  494. input_unregister_minor(mousedev_mix.devfs);
  495. input_unregister_handler(&mousedev_handler);
  496. }
  498. module_init(mousedev_init);
  499. module_exit(mousedev_exit);
  501. MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>" );
  502. MODULE_DESCRIPTION("Input driver to PS/2 or ImPS/2 device driver" );
  503. MODULE_LICENSE("GPL" );
  505. MODULE_PARM(xres, "i" );
  506. MODULE_PARM_DESC(xres, "Horizontal screen resolution" );
  507. MODULE_PARM(yres, "i" );
  508. MODULE_PARM_DESC(yres, "Vertical screen resolution" );


 
En me basant la dessus j'arrive à récupérer les boutons sans trop de problème via le code suivant:

Code :
  1. #include <sys/types.h>
  2. #include <sys/stat.h>
  3. #include <fcntl.h>
  4. #include <sys/time.h>
  5. #include <sys/ioctl.h>
  6. #include <asm/types.h>
  7. #include <errno.h>
  8. #include <linux/input.h>
  10. /*
  11. * The event structure itself
  12. */
  14. struct input_event {
  15.   struct timeval time;
  16.   __u16 type;
  17.   __u16 code;
  18.   __s32 value;
  19. };
  21. struct input_event buffer;
  22. #define uc unsigned char
  23. unsigned short last_down_right=0;
  24. unsigned short last_down_left=0;
  26. int main()
  27. {
  28.   int fd;
  29.   size_t len;
  30.   fd = open("/dev/psaux",O_RDONLY);
  31.   if (fd < 0)
  32.     {
  33.       printf ("fd = %d\nerrno = %d\n", fd, errno);
  34.       return -1;
  35.     }
  36.   while(1)
  37.     {
  38.       uc c;
  39.       len = read(fd, &c, 1);
  40.       if (len>0)
  41. {
  42.   int i;
  43.   if ((c&0x08) == 0x08)
  44.     {
  45.       //printf("Debut de message\n" );
  46.       if ((c&0x09) == 0x09 )
  47.  {
  48.   printf("Bouton 1 enfonce\n" );
  49.   last_down_left=1;
  50.  }
  51.       else if (last_down_left==1)
  52.    {
  53.     printf("bouton 1 relache\n" );
  54.     last_down_left=0;
  55.  }
  56.       if ((c&0x0a) == 0x0a )
  57.  {
  58.   printf("Bouton 2 enfonce\n" );
  59.   last_down_right=1;
  60.  }
  61.       else if (last_down_right==1)
  62.       {
  63.        printf("bouton 2 relache\n" );
  64.        last_down_right=0;
  65.  }
  67.       len = read(fd, &c, 1);
  68.       len = read(fd, &c, 1);
  69.     }
  70.   else
  71.     {
  72.       printf("Message errone\n" );
  73.     }
  74. }
  75.       //usleep(100000);
  76.     }
  77.   return 0;
  78. }


Il me manque juste à récupérer les mouvements suivant dx et dy.
D'après ce que j'ai compris au niveau du driver, ce dernier envoie une trame comprtant un tableau de 6 signed char, et en mode poll( mode normal je pense)on a buffer[1] qui contient un évènement souris 0x08, le bouton gauche cliqué 0x01, le bouton droit cliqué 0x02, ou encore un movement de souris 0x10.
buffer[2] permet de récupérer la valeur du déplacement sur dx et buffer[3] celle du déplacement sur dy.
PB, le code source suivant ne fonctionne pas :

Code :
  1. #include <sys/types.h>
  2. #include <sys/stat.h>
  3. #include <fcntl.h>
  4. #include <sys/time.h>
  5. #include <sys/ioctl.h>
  6. #include <asm/types.h>
  7. #include <errno.h>
  8. #include <linux/input.h>
  10. struct input_event buffer;
  11. unsigned char mbuf[6];
  12. unsigned short last_down_right=0;
  13. unsigned short last_down_left=0;
  15. int main()
  16. {
  17.   int fd;
  18.   int evt=0;
  19.   int evt_bouton=0;
  20.   int evt_deplacement_haut=0,evt_deplacement_bas=0;
  21.   int evt_deplacement_droite=0,evt_deplacement_gauche=0;
  22.   size_t len;
  23.   fd = open("/dev/psaux",O_RDONLY);
  24.   if (fd < 0)
  25.     {
  26.       printf ("fd = %d\nerrno = %d\n", fd, errno);
  27.       return -1;
  28.     }
  29.   while(1)
  30.     {
  31. usleep(150000);
  32.            len = read(fd, mbuf, sizeof mbuf);
  33. if (!len)
  34. {
  35.  printf("rien en lecture\n" );
  36. }
  37. else
  38. {
  39. printf("\n\n0:%x\n1:%x\n2:%x\n3:%x\n\n",mbuf[0],mbuf[1],mbuf[2],mbuf[3]);
  41. if((mbuf[1]&0x08)==0x08)
  42. {
  43.  evt=1;
  44. }
  45. else evt=0;
  47. /*si evt et que c'est un evt bouton*/
  48. if(evt==1 && ((mbuf[1]&0x01==0x01) || (mbuf[1]&0x02==0x02)))
  49. {
  50.  evt_bouton=1;
  51. //  printf("\n\t evt bouton\n" );
  52. }
  53. else evt_bouton=0;
  54. if(evt==1 && (mbuf[2]&0xff==0x1))
  55. {
  56.  evt_deplacement_haut=1;
  57.  printf("\n\t\thaut\n" );
  58. }
  59. else evt_deplacement_haut=0;
  60. if(evt==1 &&(mbuf[2]&0xff>0x1))
  61. {
  62.  evt_deplacement_bas=1;
  63.  printf("\n\tbas\n" );
  64. }
  65. else evt_deplacement_bas=0;
  66. if(evt==1 &&(mbuf[3]&0xff==0x1))
  67. {
  68.  evt_deplacement_droite=1;
  69.  printf("\n\tdroite\n" );
  70. }
  71. else evt_deplacement_droite=0;
  72. if(evt==1 &&(mbuf[3]&0xff>0x1))
  73. {
  74.  evt_deplacement_gauche=1;
  75.  printf("\n\tgauche\n" );
  76. }
  77. else evt_deplacement_gauche=0;
  79. if(evt_bouton)
  80. {
  81.   if ((mbuf[1]&0x01) == 0x01 )
  82.   {
  83.    printf("Bouton 1 enfonce\n" );
  84.    last_down_left=1;
  85.   }
  86.        else if (last_down_left==1)
  87.   {
  88.      printf("bouton 1 relache\n" );
  89.      last_down_left=0;
  90.   }
  91.        if ((mbuf[1]&0x02) == 0x02 )
  92.   {
  93.    printf("Bouton 2 enfonce\n" );
  94.    last_down_right=1;
  95.   }
  96.        else if (last_down_right==1)
  97.         {
  98.         printf("bouton 2 relache\n" );
  99.         last_down_right=0;
  100.   }
  101. }
  102.   }//else
  103.   }//while
  104.   return 0;
  105. }


si qqun a eu le courage de lire jusqu'au bout et peut m'aider, il est le bien venu.
 :hello:


Message édité par psebcopathe le 24-08-2004 à 09:50:38
Reply

Marsh Posté le 23-08-2004 à 08:34:05   

Reply

Marsh Posté le 24-08-2004 à 09:18:00    

Bon ben en fait j'ai trouvé.
Le driver n'envoie pas tout le temps 6 octets.
En effet, lorsqu'il n'y a pas de déplacement, seulement un évènement bouton il n'envoie qu'un seul octect en position buffer[0].
Si il y a un déplacement, il en envoie 3 buffer[0],buffer[1] et buffer[2].
Donc voilà, pour ceux que ca intéresse, celà fonctionne avec le code suivant :
 

Code :
  1. #include <sys/types.h>
  2. #include <sys/stat.h>
  3. #include <fcntl.h>
  4. #include <sys/time.h>
  5. #include <sys/ioctl.h>
  6. #include <asm/types.h>
  7. #include <errno.h>
  8. #include <linux/input.h>
  10. struct input_event buffer;
  11. #define uc unsigned char
  12. unsigned short last_down_right=0;
  13. unsigned short last_down_left=0;
  15. int main()
  16. {
  17.   int fd;
  18.   size_t len;
  19.   char dx, dy, x=0, y=0;
  20.   fd = open("/dev/psaux",O_RDONLY);
  21.   if (fd < 0)
  22.     {
  23.       printf ("fd = %d\nerrno = %d\n", fd, errno);
  24.       return -1;
  25.     }
  26.   while(1)
  27.     {
  28.       uc c;
  29.       len = read(fd, &c, 1);
  30.       if (len>0)
  31. {
  32.   if ((c&0x08) == 0x08)
  33.     {
  34.       if ((c&0x09) == 0x09 )
  35.  {
  36.   printf("Bouton 1 enfonce\n" );
  37.   last_down_left=1;
  38.  }
  39.       else if (last_down_left==1)
  40.    {
  41.     printf("bouton 1 relache\n" );
  42.     last_down_left=0;
  43.  }
  44.       if ((c&0x0a) == 0x0a )
  45.  {
  46.   printf("Bouton 2 enfonce\n" );
  47.   last_down_right=1;
  48.  }
  49.       else if (last_down_right==1)
  50.       {
  51.        printf("bouton 2 relache\n" );
  52.        last_down_right=0;
  53.  }
  54.       len = read(fd, &c, 1);
  55.       if (len == 1)
  56.  {
  57.    memcpy(&dx, &c, 1);
  58.    printf("mouvement sur x: %d\n", dx);
  59.  }
  60.       len = read(fd, &c, 1);
  61.       if (len == 1)
  62.  {
  63.    memcpy(&dy, &c, 1);
  64.    printf("mouvement sur y: %d\n", dy);
  65.  }   
  66.     }
  67.   else
  68.     {
  69.       printf("Message errone\n" );
  70.     }
  71. }
  72.     }
  73.   return 0;
  74. }


 :jap:

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