IO Private Functions

Functions
uint8_t	BSP_IO_Init (void)
	Initializes and configures the IO functionalities and configures all necessary hardware resources (MFX, ...).
uint8_t	BSP_IO_DeInit (void)
	DeInit allows Mfx Initialization to be executed again.
uint32_t	BSP_IO_ITGetStatus (uint32_t IoPin)
	Gets the selected pins IT status.
void	BSP_IO_ITClear (void)
	Clears all the IO IT pending bits.
void	BSP_IO_ITClearPin (uint32_t IO_Pins_To_Clear)
	Clear only one or a selection of IO IT pending bits.
uint8_t	BSP_IO_ConfigPin (uint32_t IoPin, IO_ModeTypedef IoMode)
	Configures the IO pin(s) according to IO mode structure value.
uint8_t	BSP_IO_ConfigIrqOutPin (uint8_t IoIrqOutPinPolarity, uint8_t IoIrqOutPinType)
	Sets the IRQ_OUT pin polarity and type.
void	BSP_IO_WritePin (uint32_t IoPin, BSP_IO_PinStateTypeDef PinState)
	Sets the selected pins state.
uint32_t	BSP_IO_ReadPin (uint32_t IoPin)
	Gets the selected pins current state.
void	BSP_IO_TogglePin (uint32_t IoPin)
	Toggles the selected pins state.

---

Function Documentation

uint8_t BSP_IO_ConfigIrqOutPin	(	uint8_t	IoIrqOutPinPolarity,
		uint8_t	IoIrqOutPinType
	)

Sets the IRQ_OUT pin polarity and type.

Parameters:

IoIrqOutPinPolarity,:	High/Low
IoIrqOutPinType,:	OpenDrain/PushPull

Return values:

OK

Definition at line 260 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, IO_OK, and mfxstm32l152Identifier.

uint8_t BSP_IO_ConfigPin	(	uint32_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 can be one of the following values: MFXSTM32L152_GPIO_PIN_x: where x can be from 0 to 23.

IoMode,:

IO pin mode to configure This parameter can 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 IO_MODE_ANALOG IO_MODE_OFF IO_MODE_INPUT_PU, IO_MODE_INPUT_PD, IO_MODE_OUTPUT_OD, IO_MODE_OUTPUT_OD_PU, IO_MODE_OUTPUT_OD_PD, IO_MODE_OUTPUT_PP, IO_MODE_OUTPUT_PP_PU, IO_MODE_OUTPUT_PP_PD, IO_MODE_IT_RISING_EDGE_PU IO_MODE_IT_FALLING_EDGE_PU IO_MODE_IT_LOW_LEVEL_PU IO_MODE_IT_HIGH_LEVEL_PU IO_MODE_IT_RISING_EDGE_PD IO_MODE_IT_FALLING_EDGE_PD IO_MODE_IT_LOW_LEVEL_PD IO_MODE_IT_HIGH_LEVEL_PD

Return values:

IO_OK

if all initializations are OK. Other value if error.

Definition at line 246 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, IO_OK, and IoDrv.

Referenced by BSP_CAMERA_HwReset(), BSP_CAMERA_PwrDown(), BSP_SD_DeInitEx(), BSP_SD_InitEx(), BSP_SD_IsDetectedEx(), BSP_SD_MspInit(), and BSP_TS_ITConfig().

uint8_t BSP_IO_DeInit

(

void

)

DeInit allows Mfx Initialization to be executed again.

Note:

BSP_IO_Init() has no effect if the IoDrv is already initialized BSP_IO_DeInit() allows to erase the pointer such to allow init to be effective

Return values:

IO_OK

Definition at line 175 of file stm32f769i_eval_io.c.

References IO_OK, and IoDrv.

uint8_t BSP_IO_Init

(

void

)

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

Note:

BSP_IO_Init() is using HAL_Delay() function to ensure that MFXSTM32L152 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 are OK. Other value if error.

Definition at line 139 of file stm32f769i_eval_io.c.

References IO_ERROR, IO_I2C_ADDRESS, IO_OK, IO_PIN_ALL, IoDrv, and mfxstm32l152Identifier.

Referenced by BSP_CAMERA_Init(), BSP_SD_InitEx(), and BSP_TS_ITConfig().

void BSP_IO_ITClear

(

void

)

Clears all the IO IT pending bits.

Return values:

None

Definition at line 197 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

void BSP_IO_ITClearPin

(

uint32_t

IO_Pins_To_Clear

)

Clear only one or a selection of IO IT pending bits.

Parameters:

IO_Pins_To_Clear

: MFX IRQ status IO pin to clear (or combination of several IOs)

Definition at line 207 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

Referenced by BSP_TS_ITClear().

uint32_t BSP_IO_ITGetStatus

(

uint32_t

IoPin

)

Gets the selected pins IT status.

Parameters:

IoPin,:

Selected pins to check the status. This parameter can be any combination of the IO pins.

Return values:

IO_OK

if read status OK. Other value if error.

Definition at line 187 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

Referenced by BSP_TS_ITGetStatus().

uint32_t BSP_IO_ReadPin

(

uint32_t

IoPin

)

Gets the selected pins current state.

Parameters:

IoPin,:

Selected pins to read. This parameter can be any combination of the IO pins.

Return values:

The	current pins state

Definition at line 291 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

Referenced by BSP_CAMERA_Init(), and BSP_SD_IsDetectedEx().

void BSP_IO_TogglePin

(

uint32_t

IoPin

)

Toggles the selected pins state.

Parameters:

IoPin,:

Selected pins to toggle. This parameter can be any combination of the IO pins.

Note:

This function is only used to toggle one pin in the same time

Return values:

None

Definition at line 303 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

void BSP_IO_WritePin	(	uint32_t	IoPin,
		BSP_IO_PinStateTypeDef	PinState
	)

Sets the selected pins state.

Parameters:

IoPin,:	Selected pins to write. This parameter can be any combination of the IO pins.
PinState,:	New pins state to write

Return values:

None

Definition at line 279 of file stm32f769i_eval_io.c.

References IO_I2C_ADDRESS, and IoDrv.

Referenced by BSP_CAMERA_HwReset(), BSP_CAMERA_PwrDown(), and BSP_SD_MspInit().