Function lv_timer_set_repeat_count 

pub unsafe extern "C" fn lv_timer_set_repeat_count(
    timer: *mut lv_timer_t,
    repeat_count: i32,
)

Set the number of times a timer will repeat. @param timer pointer to a lv_timer. @param repeat_count -1 : infinity; 0 : stop ; n>0: residual times