ev3_both.h

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/*
     ____ __     ____   ___    ____ __         (((((()
    | |_  \ \  /   ) ) | |  ) | |_  \ \  /  \(@)- /
    |_|__  \_\/  __)_) |_|_/  |_|__  \_\/   /(@)- \
                                               ((())))
 */
#define GPIO_KEYS_PATH  "/dev/input/by-path/platform-gpio-keys.0-event"

enum {
    EV3_KEY__NONE_ = 0,

    EV3_KEY_UP     = 0x01L,
    EV3_KEY_DOWN   = 0x02L,
    EV3_KEY_LEFT   = 0x04L,
    EV3_KEY_RIGHT  = 0x08L,
    EV3_KEY_CENTER = 0x10L,
    EV3_KEY_BACK   = 0x20L,
};

#define DESC_LIMIT    64
#define DESC_VEC_LEN  4