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153 lines
4.3 KiB
153 lines
4.3 KiB
/* Through this source code, you could see the point output architechture of touch device.
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You could follow below code to do point parsing. And develop your own app. */
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <linux/input.h>
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/*Note: If you couldn't build this source code successfully, it may caused by the old kernel issue.
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Please enable below define depending on your kernel version */
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//#define KERNEL_2_6_35_DOWNWARD /* As kernel <= 2.6.35 */
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//#define KERNEL_2_6_32_DOWNWARD /* As kernel <= 2.6.32 */
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//#define KERNEL_2_6_29_DOWNWARD /* As kernel <= 2.6.29 */
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typedef struct tagevent
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{
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struct timeval time;
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unsigned short type;
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unsigned short code;
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int value;
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} input_event;
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void ParseEvent( input_event ev )
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{
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static unsigned short X, Y, State;
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static unsigned short X2, Y2, State2;
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static unsigned char bIsSecond;
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if( ev.type == EV_ABS ) {
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switch( ev.code ) {
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#ifndef KERNEL_2_6_35_DOWNWARD
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case ABS_MT_SLOT:
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printf(" [ABS_MT_SLOT] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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#endif
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#ifndef KERNEL_2_6_32_DOWNWARD
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case ABS_MT_PRESSURE:
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printf(" [ABS_MT_PRESSURE] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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#endif
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#ifndef KERNEL_2_6_29_DOWNWARD
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case ABS_MT_TRACKING_ID:
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printf(" [ABS_MT_TRACKING_ID] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_MT_POSITION_X:
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printf(" [ABS_MT_POSITION_X] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_MT_POSITION_Y:
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printf(" [ABS_MT_POSITION_Y] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_MT_TOUCH_MAJOR:
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printf(" [ABS_MT_TOUCH_MAJOR] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_MT_WIDTH_MAJOR:
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printf(" [ABS_MT_WIDTH_MAJOR] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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#endif
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case ABS_X:
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printf(" [ABS_X] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_Y:
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printf(" [ABS_Y] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_RX:
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printf(" [ABS_RX] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_RY:
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printf(" [ABS_RY] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case ABS_PRESSURE:
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printf(" [ABS_PRESSURE] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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default:
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break;
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}
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}
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else if( ev.type == EV_KEY ){
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switch( ev.code ){
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case BTN_TOUCH:
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printf(" [BTN_TOUCH] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case BTN_LEFT:
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printf(" [BTN_LEFT] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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case BTN_EXTRA:
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printf(" [BTN_EXTRA] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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default:
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break;
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}
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}
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else if( ev.type == EV_SYN ){
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switch( ev.code ){
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case SYN_REPORT:
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printf(" [SYN_REPORT] code = %3d, value = %4d\n\n", ev.code , ev.value);
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break;
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#ifndef KERNEL_2_6_29_DOWNWARD
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case SYN_MT_REPORT:
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printf(" [SYN_MT_REPORT] code = %3d, value = %4d\n", ev.code , ev.value);
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break;
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#endif
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default:
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break;
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}
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}
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else if( ev.type == EV_MSC ){
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if( ev.code == MSC_SCAN )
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printf(" [MSC_SCAN] code = %3d, value = %4d\n", ev.code , ev.value);
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}
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}
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int main( int argc, char **argv )
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{
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int fd;
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unsigned char byFlag = 0; /* 0: Point */
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char strPort[64] = { 0 };
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fd_set readfds;
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if( argc == 1 || argc > 2 ) {
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printf(" \nUsage:\n \tGetEvent [Port]\n");
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printf("Example:\n \tGetEvent /dev/input/event1\n\n");
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return 0;
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}
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sprintf( strPort, "%s", argv[1] );
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printf("Event Port = %s ", strPort);
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fd = open(strPort, O_RDONLY );
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if( fd >= 0 ) {
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printf(" open: ok\n" );
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FD_ZERO( &readfds );
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FD_SET( fd , &readfds );
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while( 1 ) {
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if( select( fd+1, &readfds, NULL, NULL, NULL ) > 0 ) {
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input_event ev;
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if( sizeof( input_event ) == read( fd, &ev, sizeof( input_event ) ) ) {
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ParseEvent( ev );
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} else {
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printf(" Nothing read \n" );
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}
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}
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}
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}
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return 0;
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}
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