STM32L4R9I-Discovery BSP User Manual: Exported Functions

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

Parameters:

IO_Pin,:	Output IO pin(s) to be set or reset. This parameter can be any combination of the IO pin(s).
IO_Mode,:	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

Return values:

IO_OK,:

if all initializations are OK. Other value if error.

Definition at line 206 of file stm32l4r9i_discovery_io.c.

References io_driver, IO_I2C_ADDRESS, and IO_OK.

Referenced by AUDIO_IO_Init(), BSP_IDD_GetValue(), BSP_IDD_StartMeasure(), BSP_JOY_DeInit(), BSP_JOY_Init(), BSP_LED_Init(), BSP_SD_Init(), BSP_SD_IsDetected(), BSP_SD_ITConfig(), BSP_TS_ITConfig(), BSP_TS_ITDisable(), LCD_PowerOff(), LCD_PowerOn(), PSRAM_PowerOff(), and PSRAM_PowerOn().

DeInitialize the IO to allow Mfx Initialization to be executed again.

Note:

BSP_IO_Init() has no effect if the io_driver 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 162 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_OK.

Initialize and configure 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 are OK. Other value if error.

Definition at line 113 of file stm32l4r9i_discovery_io.c.

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

Referenced by AUDIO_IO_Init(), BSP_CAMERA_Init(), BSP_IDD_Init(), BSP_JOY_Init(), BSP_LED_Init(), BSP_SD_Init(), LCD_PowerOn(), and PSRAM_PowerOn().

Clear the selected IO IT pending bit.

Parameters:

IO_Pin,:

Selected pin(s) to clear the status. This parameter can be any combination of the IO pins.

Return values:

None

Definition at line 186 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_I2C_ADDRESS.

Get the selected pins IT status.

Parameters:

IO_Pin,:

Selected pin(s) to check the status. This parameter can be any combination of the IO pins.

Return values:

Status

of the checked IO pin(s).

Definition at line 174 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_I2C_ADDRESS.

Get the selected IO pin(s) current state.

Parameters:

IO_Pin,:

Selected pin(s) to read. This parameter can be any combination of the IO pin(s).

Return values:

The	current pins state

Definition at line 233 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_JOY_GetState(), BSP_SD_IsDetected(), and BSP_SD_ITConfig().

Toggle the selected IO pin(s) state.

Parameters:

IO_Pin,:

Selected IO pin(s) to toggle. This parameter can be any combination of the IO pin(s).

Return values:

None

Definition at line 244 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_LED_Toggle().

Set the selected IO pin(s) state.

Parameters:

IO_Pin,:	Selected IO pin(s) to write. This parameter can be any combination of the IO pin(s).
PinState,:	New pin state to write

Return values:

None

Definition at line 221 of file stm32l4r9i_discovery_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_CAMERA_PwrDown(), BSP_CAMERA_PwrUp(), BSP_IDD_GetValue(), BSP_IDD_StartMeasure(), BSP_LED_Init(), BSP_LED_Off(), BSP_LED_On(), LCD_PowerOff(), LCD_PowerOn(), and PSRAM_PowerOn().