static inline void send(uint8_t data)
{
    rw0;
    if (DB)
    {
        if (data & (1 << 4)) d4_1; else d4_0;
        if (data & (1 << 5)) d5_1; else d5_0;
        if (data & (1 << 6)) d6_1; else d6_0;
        if (data & (1 << 7)) d7_1; else d7_0;
        e1;
        HAL_Delay(1);
        e0;
    }
    if (data & (1 << 0)) d4_1; else d4_0;
    if (data & (1 << 1)) d5_1; else d5_0;
    if (data & (1 << 2)) d6_1; else d6_0;
    if (data & (1 << 3)) d7_1; else d7_0;
    e1;
    HAL_Delay(1);
    e0;
    HAL_Delay(2);
}