寄存器地址设置 --- --- --- --- --- -- gpiocr .set 3ch gpiosr .set 3dh dxr10 .set 23h drr10 .set 21h spsa0 .set 38h spcr10 .set 39h spcr20 .set 39h xcr10 .set 39h pcr0 .set 39h