GPxCTRL; // GPIO x Control Register (GPIO0 to 31)
//设置采样窗周期T=2*GPXCTRL*Tsysclk；
GPxQSEL1; // GPIO x Qualifier Select 1 Register (GPIO0 to 15)(32-47)
GPxQSEL2; // GPIO x Qualifier Select 2 Register (GPIO16 to 31)(48-63)
//每两位控制一个引脚，确定是3周期采样还是6周期采样或者不用采样
GPxMUX1; // GPIO x Mux 1 Register (GPIO0 to 15)(32-47)(64-79)
GPxMUX2; // GPIO x Mux 2 Register (GPIO16 to 31)(48-63)(80-95)
//配置各个引脚的功能，0：I/O功能，1：外设功能。
GPxDIR; // GPIO x Direction Register (GPIO0 to 31)(32-63)(64-95)
//配置每个引脚是输入还是输出，0：数字量输入；1：数字量输出。
GPxPUD; // GPIO x Pull Up Disable Register (GPIO0 to 31)(32-63)(64-95)
//使能或禁止jie口的内部上拉
2、数据寄存器
GPxDAT; // GPIO Data Register (GPIO0 to 31)(32-63)(64-95)
GPxSET; // GPIO Data Set Register (GPIO0 to 31)(32-63)(64-95)
GPxCLEAR; // GPIO Data Clear Register (GPIO0 to 31)(32-63)(64-95)
GPxTOGGLE; // GPIO Data Toggle Register (GPIO0 to 31)(32-63)(64-95)
3、中断寄存器
GPIOXINT1SEL; // XINT1 GPIO Input Selection
GPIOXINT2SEL; // XINT2 GPIO Input Selection
GPIOXNMISEL; // XNMI_Xint13 GPIO Input Selection
GPIOXINT3SEL; // XINT3 GPIO Input Selection
GPIOXINT4SEL; // XINT4 GPIO Input Selection
GPIOXINT5SEL; // XINT5 GPIO Input Selection
GPIOXINT6SEL; // XINT6 GPIO Input Selection
GPIOXINT7SEL; // XINT7 GPIO Input Selection
GPIOLPMSEL; // Low power modes GP I/O input select
可以对GPIO0-63进行外部中断设置
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