GPIO driver modules. More...

Modules
	GPIO_Exported_Constants

	GPIO_Private_Functions

Data Structures
struct	GPIO_InitTypeDef
	GPIO Init structure definition. More...

Macros
#define	IS_GPIO_ALL_PERIPH(PERIPH)

#define	IS_GPIO_MODE(MODE)

#define	IS_GPIO_OTYPE(OTYPE) (((OTYPE) == GPIO_OType_PP) \|\| ((OTYPE) == GPIO_OType_OD))

#define	IS_GPIO_SPEED(SPEED)

#define	IS_GPIO_PUPD(PUPD)

#define	IS_GPIO_BIT_ACTION(ACTION) (((ACTION) == Bit_RESET) \|\| ((ACTION) == Bit_SET))

Enumerations
enum	GPIOMode_TypeDef { GPIO_Mode_IN = 0x00, GPIO_Mode_OUT = 0x01, GPIO_Mode_AF = 0x02, GPIO_Mode_AN = 0x03 }
	GPIO Configuration Mode enumeration. More...

enum	GPIOOType_TypeDef { GPIO_OType_PP = 0x00, GPIO_OType_OD = 0x01 }
	GPIO Output type enumeration.

enum	GPIOSpeed_TypeDef { GPIO_Speed_2MHz = 0x00, GPIO_Speed_25MHz = 0x01, GPIO_Speed_50MHz = 0x02, GPIO_Speed_100MHz = 0x03 }
	GPIO Output Maximum frequency enumeration. More...

enum	GPIOPuPd_TypeDef { GPIO_PuPd_NOPULL = 0x00, GPIO_PuPd_UP = 0x01, GPIO_PuPd_DOWN = 0x02 }
	GPIO Configuration PullUp PullDown enumeration.

enum	BitAction { Bit_RESET = 0, Bit_SET }
	GPIO Bit SET and Bit RESET enumeration.

Functions
void	GPIO_DeInit (GPIO_TypeDef *GPIOx)
	Deinitializes the GPIOx peripheral registers to their default reset values. More...

void	GPIO_Init (GPIO_TypeDef GPIOx, GPIO_InitTypeDef GPIO_InitStruct)
	Initializes the GPIOx peripheral according to the specified parameters in the GPIO_InitStruct. More...

void	GPIO_StructInit (GPIO_InitTypeDef *GPIO_InitStruct)
	Fills each GPIO_InitStruct member with its default value. More...

void	GPIO_PinLockConfig (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Locks GPIO Pins configuration registers. More...

uint8_t	GPIO_ReadInputDataBit (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Reads the specified input port pin. More...

uint16_t	GPIO_ReadInputData (GPIO_TypeDef *GPIOx)
	Reads the specified GPIO input data port. More...

uint8_t	GPIO_ReadOutputDataBit (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Reads the specified output data port bit. More...

uint16_t	GPIO_ReadOutputData (GPIO_TypeDef *GPIOx)
	Reads the specified GPIO output data port. More...

void	GPIO_SetBits (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Sets the selected data port bits. More...

void	GPIO_ResetBits (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Clears the selected data port bits. More...

void	GPIO_WriteBit (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
	Sets or clears the selected data port bit. More...

void	GPIO_Write (GPIO_TypeDef *GPIOx, uint16_t PortVal)
	Writes data to the specified GPIO data port. More...

void	GPIO_ToggleBits (GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin)
	Toggles the specified GPIO pins.. More...

void	GPIO_PinAFConfig (GPIO_TypeDef *GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF)
	Changes the mapping of the specified pin. More...

Detailed Description

GPIO driver modules.

Macro Definition Documentation

#define IS_GPIO_ALL_PERIPH ( PERIPH )

Value:

(((PERIPH) == GPIOA) || \
                                    ((PERIPH) == GPIOB) || \
                                    ((PERIPH) == GPIOC) || \
                                    ((PERIPH) == GPIOD) || \
                                    ((PERIPH) == GPIOE) || \
                                    ((PERIPH) == GPIOF) || \
                                    ((PERIPH) == GPIOG) || \
                                    ((PERIPH) == GPIOH) || \
                                    ((PERIPH) == GPIOI))

#define IS_GPIO_MODE ( MODE )

Value:

(((MODE) == GPIO_Mode_IN) || ((MODE) == GPIO_Mode_OUT) || \

((MODE) == GPIO_Mode_AF)|| ((MODE) == GPIO_Mode_AN))

#define IS_GPIO_PUPD ( PUPD )

Value:

(((PUPD) == GPIO_PuPd_NOPULL) || ((PUPD) == GPIO_PuPd_UP) || \

((PUPD) == GPIO_PuPd_DOWN))

#define IS_GPIO_SPEED ( SPEED )

Value:

(((SPEED) == GPIO_Speed_2MHz) || ((SPEED) == GPIO_Speed_25MHz) || \

((SPEED) == GPIO_Speed_50MHz)|| ((SPEED) == GPIO_Speed_100MHz))

Enumeration Type Documentation

enum GPIOMode_TypeDef

GPIO Configuration Mode enumeration.

Enumerator
GPIO_Mode_IN	GPIO Input Mode
GPIO_Mode_OUT	GPIO Output Mode
GPIO_Mode_AF	GPIO Alternate function Mode
GPIO_Mode_AN	GPIO Analog Mode

enum GPIOSpeed_TypeDef

GPIO Output Maximum frequency enumeration.

Enumerator
GPIO_Speed_2MHz	Low speed
GPIO_Speed_25MHz	Medium speed
GPIO_Speed_50MHz	Fast speed
GPIO_Speed_100MHz	High speed on 30 pF (80 MHz Output max speed on 15 pF)

Function Documentation

void GPIO_DeInit ( GPIO_TypeDef * GPIOx )

Deinitializes the GPIOx peripheral registers to their default reset values.

Note: By default, The GPIO pins are configured in input floating mode (except JTAG pins).

Parameters

GPIOx,: where x can be (A..I) to select the GPIO peripheral.

Return values

None

void GPIO_Init	(	GPIO_TypeDef *	GPIOx,
		GPIO_InitTypeDef *	GPIO_InitStruct
	)

Initializes the GPIOx peripheral according to the specified parameters in the GPIO_InitStruct.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_InitStruct,:	pointer to a GPIO_InitTypeDef structure that contains the configuration information for the specified GPIO peripheral.

Return values

None

void GPIO_PinAFConfig	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_PinSource,
		uint8_t	GPIO_AF
	)

Changes the mapping of the specified pin.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_PinSource,:	specifies the pin for the Alternate function. This parameter can be GPIO_PinSourcex where x can be (0..15).
GPIO_AFSelection,:	selects the pin to used as Alternate function. This parameter can be one of the following values: GPIO_AF_RTC_50Hz: Connect RTC_50Hz pin to AF0 (default after reset) GPIO_AF_MCO: Connect MCO pin (MCO1 and MCO2) to AF0 (default after reset) GPIO_AF_TAMPER: Connect TAMPER pins (TAMPER_1 and TAMPER_2) to AF0 (default after reset) GPIO_AF_SWJ: Connect SWJ pins (SWD and JTAG)to AF0 (default after reset) GPIO_AF_TRACE: Connect TRACE pins to AF0 (default after reset) GPIO_AF_TIM1: Connect TIM1 pins to AF1 GPIO_AF_TIM2: Connect TIM2 pins to AF1 GPIO_AF_TIM3: Connect TIM3 pins to AF2 GPIO_AF_TIM4: Connect TIM4 pins to AF2 GPIO_AF_TIM5: Connect TIM5 pins to AF2 GPIO_AF_TIM8: Connect TIM8 pins to AF3 GPIO_AF_TIM9: Connect TIM9 pins to AF3 GPIO_AF_TIM10: Connect TIM10 pins to AF3 GPIO_AF_TIM11: Connect TIM11 pins to AF3 GPIO_AF_I2C1: Connect I2C1 pins to AF4 GPIO_AF_I2C2: Connect I2C2 pins to AF4 GPIO_AF_I2C3: Connect I2C3 pins to AF4 GPIO_AF_SPI1: Connect SPI1 pins to AF5 GPIO_AF_SPI2: Connect SPI2/I2S2 pins to AF5 GPIO_AF_SPI3: Connect SPI3/I2S3 pins to AF6 GPIO_AF_USART1: Connect USART1 pins to AF7 GPIO_AF_USART2: Connect USART2 pins to AF7 GPIO_AF_USART3: Connect USART3 pins to AF7 GPIO_AF_UART4: Connect UART4 pins to AF8 GPIO_AF_UART5: Connect UART5 pins to AF8 GPIO_AF_USART6: Connect USART6 pins to AF8 GPIO_AF_CAN1: Connect CAN1 pins to AF9 GPIO_AF_CAN2: Connect CAN2 pins to AF9 GPIO_AF_TIM12: Connect TIM12 pins to AF9 GPIO_AF_TIM13: Connect TIM13 pins to AF9 GPIO_AF_TIM14: Connect TIM14 pins to AF9 GPIO_AF_OTG_FS: Connect OTG_FS pins to AF10 GPIO_AF_OTG_HS: Connect OTG_HS pins to AF10 GPIO_AF_ETH: Connect ETHERNET pins to AF11 GPIO_AF_FSMC: Connect FSMC pins to AF12 GPIO_AF_OTG_HS_FS: Connect OTG HS (configured in FS) pins to AF12 GPIO_AF_SDIO: Connect SDIO pins to AF12 GPIO_AF_DCMI: Connect DCMI pins to AF13 GPIO_AF_EVENTOUT: Connect EVENTOUT pins to AF15

Return values

None

void GPIO_PinLockConfig	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Locks GPIO Pins configuration registers.

Note: The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR, GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.; The configuration of the locked GPIO pins can no longer be modified until the next reset.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bit to be locked. This parameter can be any combination of GPIO_Pin_x where x can be (0..15).

Return values

None

uint16_t GPIO_ReadInputData ( GPIO_TypeDef * GPIOx )

Reads the specified GPIO input data port.

Parameters

GPIOx,: where x can be (A..I) to select the GPIO peripheral.

Return values

GPIO	input data port value.

uint8_t GPIO_ReadInputDataBit	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Reads the specified input port pin.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bit to read. This parameter can be GPIO_Pin_x where x can be (0..15).

Return values

The	input port pin value.

uint16_t GPIO_ReadOutputData ( GPIO_TypeDef * GPIOx )

Reads the specified GPIO output data port.

Parameters

GPIOx,: where x can be (A..I) to select the GPIO peripheral.

Return values

GPIO	output data port value.

uint8_t GPIO_ReadOutputDataBit	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Reads the specified output data port bit.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bit to read. This parameter can be GPIO_Pin_x where x can be (0..15).

Return values

The	output port pin value.

void GPIO_ResetBits	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Clears the selected data port bits.

Note: This functions uses GPIOx_BSRR register to allow atomic read/modify accesses. In this way, there is no risk of an IRQ occurring between the read and the modify access.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bits to be written. This parameter can be any combination of GPIO_Pin_x where x can be (0..15).

Return values

None

void GPIO_SetBits	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Sets the selected data port bits.

Note: This functions uses GPIOx_BSRR register to allow atomic read/modify accesses. In this way, there is no risk of an IRQ occurring between the read and the modify access.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bits to be written. This parameter can be any combination of GPIO_Pin_x where x can be (0..15).

Return values

None

void GPIO_StructInit ( GPIO_InitTypeDef * GPIO_InitStruct )

Fills each GPIO_InitStruct member with its default value.

Parameters

GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will be initialized.

Return values

None

void GPIO_ToggleBits	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin
	)

Toggles the specified GPIO pins..

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	Specifies the pins to be toggled.

Return values

None

void GPIO_Write	(	GPIO_TypeDef *	GPIOx,
		uint16_t	PortVal
	)

Writes data to the specified GPIO data port.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
PortVal,:	specifies the value to be written to the port output data register.

Return values

None

void GPIO_WriteBit	(	GPIO_TypeDef *	GPIOx,
		uint16_t	GPIO_Pin,
		BitAction	BitVal
	)

Sets or clears the selected data port bit.

Parameters

GPIOx,:	where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin,:	specifies the port bit to be written. This parameter can be one of GPIO_Pin_x where x can be (0..15).
BitVal,:	specifies the value to be written to the selected bit. This parameter can be one of the BitAction enum values: Bit_RESET: to clear the port pin Bit_SET: to set the port pin

Return values

None

Modules

Data Structures

Macros

Enumerations

Functions

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation