STM32F429I DISCOVERY IO Private Functions

Functions
uint8_t	BSP_IO_Init (void)
	Initializes and configures the IO functionalities and configures all necessary hardware resources (GPIOs, clocks..).
uint8_t	BSP_IO_ITGetStatus (uint16_t IoPin)
	Gets the selected pins IT status.
void	BSP_IO_ITClear (void)
	Clears all the IO IT pending bits.
void	BSP_IO_ConfigPin (uint16_t IoPin, IO_ModeTypedef IoMode)
	Configures the IO pin(s) according to IO mode structure value.
void	BSP_IO_WritePin (uint16_t IoPin, uint8_t PinState)
	Sets the selected pins state.
uint16_t	BSP_IO_ReadPin (uint16_t IoPin)
	Gets the selected pins current state.
void	BSP_IO_TogglePin (uint16_t IoPin)
	Toggles the selected pins state.

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Function Documentation

void BSP_IO_ConfigPin	(	uint16_t	IoPin,
		IO_ModeTypedef	IoMode
	)

Configures the IO pin(s) according to IO mode structure value.

Parameters:

IoPin,:	IO pin(s) to be configured. This parameter could be any combination of the following values: STMPE811_PIN_x: where x can be from 0 to 7.
IoMode,:	The IO pin mode to configure, could be one of the following values: IO_MODE_INPUT IO_MODE_OUTPUT IO_MODE_IT_RISING_EDGE IO_MODE_IT_FALLING_EDGE IO_MODE_IT_LOW_LEVEL IO_MODE_IT_HIGH_LEVEL

Definition at line 162 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, and IoDrv.

uint8_t BSP_IO_Init

(

void

)

Initializes and configures the IO functionalities and configures all necessary hardware resources (GPIOs, clocks..).

Note:

BSP_IO_Init() is using HAL_Delay() function to ensure that stmpe811 IO Expander is correctly reset. HAL_Delay() function provides accurate delay (in milliseconds) based on variable incremented in SysTick ISR. This implies that if BSP_IO_Init() is called from a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower) than the peripheral interrupt. Otherwise the caller ISR process will be blocked.

Return values:

IO_OK

if all initializations done correctly. Other value if error.

Definition at line 108 of file stm32f429i_discovery_io.c.

References IO_ERROR, IO_I2C_ADDRESS, IO_OK, IO_PIN_ALL, and IoDrv.

void BSP_IO_ITClear

(

void

)

Clears all the IO IT pending bits.

Definition at line 143 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, IO_PIN_ALL, and IoDrv.

uint8_t BSP_IO_ITGetStatus

(

uint16_t

IoPin

)

Gets the selected pins IT status.

Parameters:

IoPin,:

The selected pins to check the status. This parameter could be any combination of the IO pins.

Return values:

Status

of IO Pin checked.

Definition at line 134 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, and IoDrv.

uint16_t BSP_IO_ReadPin

(

uint16_t

IoPin

)

Gets the selected pins current state.

Parameters:

IoPin,:

The selected pins to read. This parameter could be any combination of the IO pins.

Return values:

The	current pins state

Definition at line 186 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, and IoDrv.

void BSP_IO_TogglePin

(

uint16_t

IoPin

)

Toggles the selected pins state.

Parameters:

IoPin,:

The selected pins to toggle. This parameter could be any combination of the IO pins.

Definition at line 196 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, and IoDrv.

void BSP_IO_WritePin	(	uint16_t	IoPin,
		uint8_t	PinState
	)

Sets the selected pins state.

Parameters:

IoPin,:	The selected pins to write. This parameter could be any combination of the IO pins.
PinState,:	the new pins state to write

Definition at line 174 of file stm32f429i_discovery_io.c.

References IO_I2C_ADDRESS, and IoDrv.