STM32中GPIO

①Mode

typedef enum

{

GPIO_Mode_IN=0x00,//GPIO INPUT Mode,commonly for key

GPIO_Mode_OUT=0x01,//GPIO OUTPUT Mode,commonly for led、beep

GPIO_Mode_AF=0x02,//GPIO Alternate function Mode,not commonly

GPIO_Mode_AN=0x03,//GPIO Analog Mode,commonly for adc 、dac

}GPIOMode_TypeDef;

②GPIO_OType

typedef enum

{

GPIO_OType_PP=0x00,//up control,推挽输出，for control

GPIO_OType_OD=0x01//开漏输出,for big current drive

}GPIOType_TypeDef

③GPIO_PuPd

typedef enum

{

GPIO_PuPd_NOPULL=0x00;//commonly for floating output,up and down resistor switch open

GPIO_PuPd_UP=0X01,//high electric

GPIO_PuPd_DOWN=0x02//low electric

}GPIOPuPd_TypeDef;