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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 130 | ligi | 1 | #include "evdev_handler.h" |
| 2 | |||
| 3 | int evdev_fd; |
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| 4 | int evdev_out_fd; |
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| 5 | int retval; |
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| 6 | size_t read_bytes; /* how many bytes were read */ |
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| 7 | struct input_event ev[64]; /* the events (up to 64 at once) */ |
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| 8 | struct input_event led_event; |
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| 9 | |||
| 10 | |||
| 11 | |||
| 12 | int *evdev_rel_axis=NULL; |
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| 13 | char *evdev_button=NULL; |
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| 14 | |||
| 15 | int counter; |
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| 16 | |||
| 17 | int connect_evdev(char* input_evdev_name) |
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| 18 | { |
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| 19 | evdev_rel_axis = (int *) calloc( 100, sizeof( int ) ); |
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| 20 | evdev_button = (char *)calloc( 100, sizeof( char ) ); |
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| 21 | |||
| 22 | struct input_devinfo { |
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| 23 | uint16_t bustype; |
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| 24 | uint16_t vendor; |
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| 25 | uint16_t product; |
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| 26 | uint16_t version; |
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| 27 | }; |
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| 28 | struct input_devinfo device_info; |
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| 29 | |||
| 30 | if ((evdev_out_fd = open(input_evdev_name, O_WRONLY)) < 0) |
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| 31 | { |
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| 32 | printf(" cant open %s for writing\n",input_evdev_name); |
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| 33 | |||
| 34 | } |
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| 35 | |||
| 36 | if ((evdev_fd = open(input_evdev_name, O_RDONLY)) < 0) |
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| 37 | { |
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| 38 | printf(" cant open %s for reading!",input_evdev_name); |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |||
| 42 | ioctl(evdev_fd,EVIOCGID,&device_info); |
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| 43 | |||
| 44 | printf("vendor 0x%04hx product 0x%04hx version 0x%04hx \n", |
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| 45 | device_info.vendor, device_info.product, |
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| 46 | device_info.version); |
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| 47 | |||
| 48 | |||
| 49 | char name[256]= "Unknown"; |
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| 50 | |||
| 51 | if(ioctl(evdev_fd, EVIOCGNAME(sizeof(name)), name) < 0) { |
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| 52 | perror("evdev ioctl"); |
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| 53 | } |
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| 54 | |||
| 55 | printf("EVDEV reports name: %s\n", name); |
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| 56 | |||
| 57 | /* this macro is used to tell if "bit" is set in "array" |
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| 58 | * it selects a byte from the array, and does a boolean AND |
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| 59 | * operation with a byte that only has the relevant bit set. |
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| 60 | * eg. to check for the 12th bit, we do (array[1] & 1<<4) |
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| 61 | */ |
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| 62 | |||
| 63 | |||
| 64 | uint8_t evtype_bitmask[EV_MAX/8 + 1]; |
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| 65 | |||
| 66 | if(ioctl(evdev_fd, EVIOCGBIT(0, sizeof(evtype_bitmask)), evtype_bitmask) < 0) |
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| 67 | perror("evdev ioctl"); |
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| 68 | |||
| 69 | printf("Supported event types:\n"); |
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| 70 | |||
| 71 | int i; |
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| 72 | for (i = 0; i < EV_MAX; i++) { |
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| 73 | if (test_bit(i, evtype_bitmask)) { |
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| 74 | /* this means that the bit is set in the event types list */ |
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| 75 | printf(" Event type 0x%02x ", i); |
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| 76 | switch ( i) |
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| 77 | { |
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| 78 | case EV_KEY : |
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| 79 | printf(" (Keys or Buttons)\n"); |
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| 80 | break; |
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| 81 | case EV_ABS : |
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| 82 | printf(" (Absolute Axes)\n"); |
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| 83 | break; |
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| 84 | case EV_LED : |
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| 85 | printf(" (LEDs)\n"); |
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| 86 | break; |
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| 87 | case EV_REP : |
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| 88 | printf(" (Repeat)\n"); |
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| 89 | break; |
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| 90 | case EV_SYN : |
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| 91 | printf(" (Sync?)\n"); |
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| 92 | break; |
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| 93 | case EV_REL : |
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| 94 | printf(" (Relative Axis)\n"); |
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| 95 | break; |
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| 96 | case EV_MSC : |
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| 97 | printf(" (Misc)\n"); |
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| 98 | break; |
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| 99 | default: |
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| 100 | printf(" (Unknown event type: 0x%04hx)\n", i); |
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| 101 | }}} |
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| 102 | |||
| 103 | return 1; |
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| 104 | } |
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| 105 | |||
| 106 | int init_evdevstatus_led() |
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| 107 | { |
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| 108 | led_event.type=EV_LED; |
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| 109 | led_event.code = LED_MISC; |
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| 110 | led_event.value = 1; |
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| 111 | if (evdev_out_fd) |
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| 112 | retval = write(evdev_out_fd, &led_event, sizeof(struct input_event)); |
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| 113 | return 1; |
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| 114 | } |
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| 115 | |||
| 116 | int blink_evdev_led() |
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| 117 | { |
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| 118 | |||
| 119 | if (evdev_out_fd) |
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| 120 | { |
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| 121 | if (led_event.value) |
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| 122 | led_event.value = 0; |
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| 123 | else |
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| 124 | led_event.value = 1 ; |
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| 125 | |||
| 126 | retval = write(evdev_out_fd, &led_event, sizeof(struct input_event)); |
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| 127 | } |
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| 128 | return 1; |
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| 129 | } |
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| 130 | |||
| 131 | int poll_evdev() |
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| 132 | { |
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| 133 | |||
| 134 | struct timeval tv; |
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| 135 | |||
| 136 | fd_set rfds; |
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| 137 | FD_ZERO(&rfds); |
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| 138 | FD_SET(evdev_fd,&rfds); |
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| 139 | |||
| 140 | tv.tv_sec = 0; |
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| 141 | tv.tv_usec = 5; |
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| 142 | |||
| 143 | retval = select(evdev_fd+1, &rfds, NULL, NULL, &tv); |
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| 144 | |||
| 145 | if (retval==-1) |
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| 146 | printf("error in select!!!!!!!!\n"); |
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| 147 | else if (retval) |
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| 148 | { |
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| 149 | read_bytes = read(evdev_fd, ev, sizeof(struct input_event) * 64); |
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| 150 | |||
| 151 | if (read_bytes < (int) sizeof(struct input_event)) { |
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| 152 | perror("evtest: short read"); |
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| 153 | exit (1); |
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| 154 | } |
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| 155 | |||
| 156 | for (counter = 0; counter < (int) (read_bytes / sizeof(struct input_event)); counter++) |
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| 157 | { |
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| 158 | |||
| 159 | printf("%d type:%d code:%d val:%d \n",counter,ev[counter].type,ev[counter].code,ev[counter].value); |
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| 160 | if (ev[counter].type==EV_REL) evdev_rel_axis[ ev[counter].code]= ev[counter].value; |
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| 161 | if (ev[counter].type==EV_KEY) evdev_button[ ev[counter].code-256]= ev[counter].value; |
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| 162 | } |
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| 163 | |||
| 164 | |||
| 165 | for (counter=0;counter<10;counter++) |
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| 166 | printf("A%d %d -" , counter, evdev_rel_axis[counter] ); |
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| 167 | printf("\n"); |
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| 168 | |||
| 169 | for (counter=0;counter<10;counter++) |
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| 170 | printf("B%d %d -" , counter, evdev_button[counter] ); |
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| 171 | // printf("input read done: nick:%d roll:%d gier:%d gas:%d\n",axis[3] , axis[4] , axis[5] , axis[2]); |
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| 172 | } |
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| 173 | else |
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| 174 | printf("no data from evdev data from evdev: \n"); |
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| 175 | |||
| 176 | return 1; |
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| 177 | } |