GPIO input function configuration register
IN_SEL | set this value: s=0-53: connect GPIO[s] to this port. s=0x38: set this port always high level. s=0x3C: set this port always low level. |
IN_INV_SEL | set this bit to invert input signal. 1:invert. 0:not invert. |
SEL | set this bit to bypass GPIO. 1:do not bypass GPIO. 0:bypass GPIO. |