#include <stdio.h>
#include <stdint.h>

// test_t is 4 bytes
// lv_sb_mode_t is 1 byte

typedef enum
{
    SB_MODE_OFF     = 0x0,      /*Never show scrollbars*/
    SB_MODE_ON      = 0x1,      /*Always show scrollbars*/
    SB_MODE_DRAG = 0x2,     /*Show scrollbars when page is being dragged*/
    SB_MODE_AUTO = 0x3,     /*Show scrollbars when the scrollable container is large enough to be scrolled*/
    SB_MODE_HIDE = 0x4,     /*Hide the scroll bar temporally*/
    SB_MODE_UNHIDE = 0x5,   /*Unhide the previously hidden scrollbar. Recover it's type too*/
} test_t;

enum
{
    LV_SB_MODE_OFF  = 0x0,      /*Never show scrollbars*/
    LV_SB_MODE_ON   = 0x1,      /*Always show scrollbars*/
    LV_SB_MODE_DRAG = 0x2,      /*Show scrollbars when page is being dragged*/
    LV_SB_MODE_AUTO = 0x3,      /*Show scrollbars when the scrollable container is large enough to be scrolled*/
    LV_SB_MODE_HIDE = 0x4,      /*Hide the scroll bar temporally*/
    LV_SB_MODE_UNHIDE = 0x5,    /*Unhide the previously hidden scrollbar. Recover it's type too*/
};
typedef uint8_t lv_sb_mode_t;

void rets(lv_sb_mode_t a);

int main(void) {

    rets(LV_SB_MODE_AUTO);

    return 0;
}

void rets(lv_sb_mode_t a)
{
    printf("%d\r\n", a);
}