Arduino for STM32

bit is a bit!
Thank you all! I got it!! What a good feeling!

Oh. It makes sense..!
But how do i read a single pin input state high/low?
Like digitalRead(PF3) but faster.

Should it be like this:
if gpio_read_bit(GPIOF, 3) == 0 means pin grounded, if !=0 then floating or pulled to vcc?
I thought it gona be "0" and "1" respectively, but ok..

When Im changing from digitalWrite to gpio_write_bit everything goes good.
but gpio_read_bit doesn't work. I just need faster gpio readings.

pinMode(PF3, INPUT);
pinMode(PF5, INPUT);
//temporary debug display:
display.clearDisplay();
display.setCursor(8, 0);
display.print(gpio_read_bit(GPIOF ...