STM324xG_EVAL BSP User Manual: STM324xG EVAL IO Private Functions

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

Parameters:

IO_Pin,:	Output pin to be set or reset. This parameter can be one of the following values: STMPE811_PIN_x: where x can be from 0 to 7
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 193 of file stm324xg_eval_io.c.

References io_driver, IO_I2C_ADDRESS, and IO_OK.

Referenced by BSP_JOY_Init(), and CODEC_Reset().

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 are OK. Other value if error.

Definition at line 138 of file stm324xg_eval_io.c.

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

Referenced by BSP_JOY_Init(), and CODEC_Reset().

Clears the selected IO IT pending bit.

Parameters:

IO_Pin,:

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

Definition at line 173 of file stm324xg_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

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 162 of file stm324xg_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

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 218 of file stm324xg_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_JOY_GetState().

Toggles the selected pins state.

Parameters:

IO_Pin,:

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

Definition at line 228 of file stm324xg_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

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

Definition at line 207 of file stm324xg_eval_io.c.

References io_driver, and IO_I2C_ADDRESS.

Referenced by BSP_AUDIO_OUT_Stop(), and CODEC_Reset().