STM32L073Z_EVAL_IO_Private_Functions

Functions
uint8_t	BSP_IO_Init (void)
	Initializes and configures the IO functionalities and configures all necessary hardware resources (GPIOs, clocks..).
uint32_t	BSP_IO_ITGetStatus (uint32_t IO_Pin)
	Gets the selected pins IT status.
void	BSP_IO_ITClear (void)
	Clears all the IO IT pending bits.
uint8_t	BSP_IO_ConfigPin (uint32_t IO_Pin, IO_ModeTypedef IO_Mode)
	Configures the IO pin(s) according to IO mode structure value.
void	BSP_IO_WritePin (uint32_t IO_Pin, uint8_t PinState)
	Sets the selected pins state.
uint32_t	BSP_IO_ReadPin (uint32_t IO_Pin)
	Gets the selected pins current state.
void	BSP_IO_TogglePin (uint32_t IO_Pin)
	Toggles the selected pins state.

---

Function Documentation

uint8_t BSP_IO_ConfigPin	(	uint32_t	IO_Pin,
		IO_ModeTypedef	IO_Mode
	)

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

Parameters:

IO_Pin,:

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.

IO_Mode,:

IO pin mode to configure This parameter can be one of the following values: IO_MODE_INPUT 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_INPUT_PR_PU, IO_MODE_INPUT_PR_PD, IO_MODE_OUTPUT_OD_PU, IO_MODE_OUTPUT_OD_PD, 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 215 of file stm32l073z_eval_io.c.

References io_driver, IO_I2C_ADDRESS, and IO_OK.

Referenced by BSP_JOY_Init(), and SD_IO_Init().

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 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.

Parameters:

None

Return values:

IO_OK

if all initializations are OK. Other value if error.

Definition at line 138 of file stm32l073z_eval_io.c.

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

Referenced by BSP_JOY_Init(), and SD_IO_Init().

void BSP_IO_ITClear

(

void

)

Clears all the IO IT pending bits.

Parameters:

None

Return values:

None

Definition at line 179 of file stm32l073z_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

uint32_t BSP_IO_ITGetStatus

(

uint32_t

IO_Pin

)

Gets the selected pins IT status.

Parameters:

IO_Pin,:

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 168 of file stm32l073z_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

uint32_t BSP_IO_ReadPin

(

uint32_t

IO_Pin

)

Gets the selected pins current state.

Parameters:

IO_Pin,:

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

Return values:

The	current pins state

Definition at line 242 of file stm32l073z_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_JOY_GetState(), and BSP_SD_IsDetected().

void BSP_IO_TogglePin

(

uint32_t

IO_Pin

)

Toggles the selected pins state.

Parameters:

IO_Pin,:

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

Return values:

None

Definition at line 253 of file stm32l073z_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

void BSP_IO_WritePin	(	uint32_t	IO_Pin,
		uint8_t	PinState
	)

Sets the selected pins state.

Parameters:

IO_Pin,:	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 230 of file stm32l073z_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.