掌機 - GKD Pixel 2 - C/C++ - Read Keypad

main.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <linux/input.h>
 
int main(int argc, char **argv)
{
    int fd = -1;
    struct input_event ev = {0};
 
    fd = open("/dev/input/event2", O_RDONLY);
    if (fd > 0) {
        while (read(fd, &ev, sizeof(struct input_event))) {
            if (ev.type == EV_KEY) {
                printf("code:%d, value:%d\n", ev.code, ev.value);
            }
        }
        close(fd);
    }
    return 0;
}

Key Code

UP      544
DOWN    545
LEFT    546
RIGHT   547
A       305
B       304
X       307
Y       308
L1      310
L2      312
R1      311
R2      313
SELECT  314
START   315
MENU    704