GPIO Read and Write

GPIO Read and Write. More...

Functions
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...

Detailed Description

GPIO Read and Write.

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                              GPIO Read and Write
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Function Documentation

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_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