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130 ligi 1
#include "evdev_handler.h"
483 ligi 2
#include "config.h"
130 ligi 3
 
4
int retval;
5
size_t read_bytes;  /* how many bytes were read */
6
struct input_event ev[64]; /* the events (up to 64 at once) */
7
struct input_event led_event;
8
 
9
 
10
 
11
int counter;
12
 
483 ligi 13
int evdevs_count=0;
14
int file_select(struct direct   *entry)
15
{
16
 
17
  if ((strncmp(entry->d_name, "event",5))==0)
18
    return (TRUE);
19
  else
20
    return(FALSE);
21
}
22
 
23
 
24
void collect_evdev_devices()
25
{
26
 
27
  char event_dev_path[]="/dev/input/";
28
 
29
  struct direct **files;
30
  evdevs_count = scandir(event_dev_path, &files, file_select, NULL);
31
 
32
  printf("%d inputs found in %s\n" , evdevs_count,event_dev_path);
33
 
34
  int i=0;
35
  for (i=1;i<evdevs_count+1;++i)
36
    {
37
 
38
      printf("%s",files[i-1]->d_name);
39
      sprintf(evdevs[i].fname,"%s%s",event_dev_path,files[i-1]->d_name);
40
      int act_fd;
41
 
42
      if ((act_fd = open(evdevs[i].fname, O_RDONLY)) < 0)
43
        {
44
          printf(" cant open %s for reading!",evdevs[i].name);
45
 
46
        }
47
      else
48
        {
49
          if(ioctl(act_fd , EVIOCGNAME(sizeof(evdevs[i].name)), evdevs[i].name) < 0) {
50
            perror("evdev ioctl");
51
          }
52
 
53
          printf("EVDEV reports name: %s\n", evdevs[i].name);
54
          close(act_fd);
55
        }
56
 
57
 
58
      /*
59
      FILE *fp=NULL ;
60
 
61
      sprintf(evdevs[i].fname,"/sys/class/input/%s/name",files[i-1]->d_name);
62
      fp = fopen ( evdevs[i].fname, "r") ;
63
 
64
      if (fp==NULL)
65
        {
66
          printf("cannot read %s\n",evdevs[i].fname);
67
          //  exit(1);
68
        }
69
      int ch=-2;
70
      int str_pos=0;
71
      while ( (ch!=-1) && (ch!='\n') )
72
        {
73
 
74
          ch = fgetc ( fp ) ;
75
          if ((ch!=13)&&(ch!=10))evdevs[i].name[str_pos++]=ch;
76
          printf("%c",ch);
77
        }
78
 
79
      fclose(fp);
80
      evdevs[i].name[str_pos++]=0;
81
      */
82
 
83
    }
84
}
85
 
86
 
87
void print_event_str(int id)
88
{
89
  switch ( id)
90
    {
91
    case EV_KEY :
92
      printf("Keys or Button\n");
93
      break;
94
    case EV_ABS :
95
      printf("Absolute Axis\n");
96
      break;
97
    case EV_LED :
98
      printf("LED(s)\n");
99
      break;
100
    case EV_REP :
101
      printf("Repeat\n");
102
      break;
103
    case EV_SYN :
104
      printf("Sync?\n");
105
      break;
106
    case EV_REL :
107
      printf("Relative Axis\n");
108
      break;
109
    case EV_MSC :
110
      printf("Misc\n");
111
      break;
112
    default:
113
      printf("Unknown event type ( 0x%04hx)\n", id);
114
    }
115
 
116
  return "";
117
}
118
 
119
int connect_evdev()
130 ligi 120
{
121
 
483 ligi 122
 
130 ligi 123
  struct input_devinfo {
124
    uint16_t bustype;
125
    uint16_t vendor;
126
    uint16_t product;
127
    uint16_t version;
128
  };
129
  struct input_devinfo device_info;
130
 
483 ligi 131
  int i;
132
  for ( i =0 ; i< input_count;i++)
130 ligi 133
    {
483 ligi 134
      inputs[i].evdev_rel_axis = (int *) calloc( 100, sizeof( int ) );
135
      inputs[i].evdev_button = (char *)calloc( 500, sizeof( char ) );
130 ligi 136
 
483 ligi 137
      if ((inputs[i].evdev_out_fd = open(inputs[i].fname, O_WRONLY)) < 0)
138
        {
139
          printf(" cant open %s for writing\n",inputs[i].fname);
140
 
141
        }
142
 
143
      if ((inputs[i].evdev_in_fd = open(inputs[i].fname, O_RDONLY)) < 0)
144
        {
145
          printf(" cant open %s for reading!",inputs[i].fname);
146
          return 0;
147
        }
130 ligi 148
 
483 ligi 149
      ioctl(inputs[i].evdev_in_fd ,EVIOCGID,&device_info);
130 ligi 150
 
483 ligi 151
      printf("vendor 0x%04hx product 0x%04hx version 0x%04hx \n",
152
             device_info.vendor, device_info.product,
153
             device_info.version);
130 ligi 154
 
155
 
483 ligi 156
      uint8_t evtype_bitmask[EV_MAX/8 + 1];
157
 
158
      if(ioctl(inputs[i].evdev_in_fd , EVIOCGBIT(0, sizeof(evtype_bitmask)), evtype_bitmask) < 0)
159
        perror("evdev ioctl");
160
 
161
      printf("Supported event types:\n");
162
 
163
      int i;
164
      for (i = 0; i < EV_MAX; i++) {
165
        if (test_bit(i, evtype_bitmask)) {
166
          /* this means that the bit is set in the event types list */
167
          printf("  Event type 0x%02x ", i);
168
 
169
          print_event_str(i);
170
        }}
171
    }
130 ligi 172
  return 1;
173
}
174
 
483 ligi 175
/*
130 ligi 176
int init_evdevstatus_led()
177
{
178
  led_event.type=EV_LED;
179
  led_event.code = LED_MISC;
180
  led_event.value = 1;
181
  if (evdev_out_fd)
182
    retval = write(evdev_out_fd, &led_event, sizeof(struct input_event));
183
  return 1;
184
}
185
 
186
int blink_evdev_led()
187
{
188
 
189
  if (evdev_out_fd)
190
    {
191
      if (led_event.value)
192
        led_event.value = 0;
483 ligi 193
      else
130 ligi 194
        led_event.value = 1 ;
195
 
196
      retval = write(evdev_out_fd, &led_event, sizeof(struct input_event));
197
    }
198
  return 1;
199
}
483 ligi 200
*/
130 ligi 201
 
202
int poll_evdev()
203
{
204
 
483 ligi 205
  printf("polling evdev\n");
206
  int i;
207
  for ( i =0 ; i< input_count;i++)
130 ligi 208
    {
483 ligi 209
      struct timeval tv = {0,5};
130 ligi 210
 
483 ligi 211
      fd_set rfds;
212
      FD_ZERO(&rfds);
213
      FD_SET(inputs[i].evdev_in_fd,&rfds);
214
 
130 ligi 215
 
483 ligi 216
 
217
      retval = select(inputs[i].evdev_in_fd+1, &rfds, NULL, NULL, &tv);
218
 
219
      if (retval==-1)
220
        printf("error in select!!!!!!!!\n");
221
      else if (retval)
130 ligi 222
        {
483 ligi 223
          read_bytes = read(inputs[i].evdev_in_fd, ev, sizeof(struct input_event) * 64);
224
 
225
          if (read_bytes < (int) sizeof(struct input_event)) {
226
            perror("evtest: short read");
227
            exit (1);
130 ligi 228
 
483 ligi 229
}
230
 
231
          for (counter = 0; counter < (int) (read_bytes / sizeof(struct input_event)); counter++)
232
            {
233
              //print_event_str(ev[counter].type); 
234
              //              printf(" code:%d val:%d \n",ev[counter].code,ev[counter].value);
235
 
236
              //          if (ev[counter].type==EV_REL) evdev_rel_axis[ ev[counter].code]= ev[counter].value;
237
              // for logitech problem
238
              if (ev[counter].type==EV_REL) inputs[i].evdev_rel_axis[ ev[counter].code]= ev[counter].value;
239
              if (ev[counter].type==EV_KEY) inputs[i].evdev_button[ ev[counter].code]= ev[counter].value;
240
            }
241
 
242
 
243
          for (counter=0;counter<20;counter++)
244
            printf("A%d %d -" , counter, inputs[i].evdev_rel_axis[counter] );
245
          printf("\n");
246
 
247
          for (counter=0;counter<10;counter++)
248
            printf("B%d %d -" , counter, inputs[i].evdev_button[counter] );
249
          //            printf("input read done: nick:%d roll:%d gier:%d gas:%d\n",axis[3] , axis[4] , axis[5] , axis[2]); 
130 ligi 250
        }
483 ligi 251
      else
252
        printf("no data from evdev data from evdev: \n");
130 ligi 253
    }
254
  return 1;
255
}