Add GPIO ASCR GPIO 0x00000000 ASCR ASCR GPIO port analog switch control register 0x2C 0x20 read-write 0x00000000 ASC0 Port analog switch control 0 1 ASC1 Port analog switch control 1 1 ASC2 Port analog switch control 2 1 ASC3 Port analog switch control 3 1 ASC4 Port analog switch control 4 1 ASC5 Port analog switch control 5 1 ASC6 Port analog switch control 6 1 ASC7 Port analog switch control 7 1 ASC8 Port analog switch control 8 1 ASC9 Port analog switch control 9 1 ASC10 Port analog switch control 10 1 ASC11 Port analog switch control 11 1 ASC12 Port analog switch control 12 1 ASC13 Port analog switch control 13 1 ASC14 Port analog switch control 14 1 ASC15 Port analog switch control 15 1