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/**
******************************************************************************
* @file stm324xg_eval_io.c
* @author MCD Application Team
* @brief This file provides a set of functions needed to manage the IO pins
* on STM324xG-EVAL evaluation board.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* File Info : -----------------------------------------------------------------
User NOTES
1. How To use this driver:
--------------------------
- This driver is used to drive the IO module of the STM324xG-EVAL evaluation
board.
- The STMPE811 IO expander device component driver must be included with this
driver in order to run the IO functionalities commanded by the IO expander
device mounted on the evaluation board.
2. Driver description:
---------------------
+ Initialization steps:
o Initialize the IO module using the BSP_IO_Init() function. This
function includes the MSP layer hardware resources initialization and the
communication layer configuration to start the IO functionalities use.
+ IO functionalities use
o The IO pin mode is configured when calling the function BSP_IO_ConfigPin(), you
must specify the desired IO mode by choosing the "IO_ModeTypedef" parameter
predefined value.
o If an IO pin is used in interrupt mode, the function BSP_IO_ITGetStatus() is
needed to get the interrupt status. To clear the IT pending bits, you should
call the function BSP_IO_ITClear() with specifying the IO pending bit to clear.
o The IT is handled using the corresponding external interrupt IRQ handler,
the user IT callback treatment is implemented on the same external interrupt
callback.
o To get/set an IO pin combination state you can use the functions
BSP_IO_ReadPin()/BSP_IO_WritePin() or the function BSP_IO_TogglePin() to toggle the pin
state.
------------------------------------------------------------------------------*/
/* Includes ------------------------------------------------------------------*/
#include "stm324xg_eval_io.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup STM324xG_EVAL
* @{
*/
/** @defgroup STM324xG_EVAL_IO STM324xG EVAL IO
* @{
*/
/** @defgroup STM324xG_EVAL_IO_Private_Types_Definitions STM324xG EVAL IO Private Types Definitions
* @{
*/
/**
* @}
*/
/** @defgroup STM324xG_EVAL_IO_Private_Variables STM324xG EVAL IO Private Variables
* @{
*/
static IO_DrvTypeDef *io_driver;
/**
* @}
*/
/** @defgroup STM324xG_EVAL_IO_Private_Functions STM324xG EVAL IO Private Functions
* @{
*/
/**
* @brief 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.
* @retval IO_OK: if all initializations are OK. Other value if error.
*/
uint8_t BSP_IO_Init(void)
{
uint8_t ret = IO_ERROR;
if(stmpe811_io_drv.ReadID(IO_I2C_ADDRESS) == STMPE811_ID)
{
/* Initialize the IO driver structure */
io_driver = &stmpe811_io_drv;
io_driver->Init(IO_I2C_ADDRESS);
io_driver->Start(IO_I2C_ADDRESS, IO_PIN_ALL);
ret = IO_OK;
}
return ret;
}
/**
* @brief Gets the selected pins IT status.
* @param IO_Pin: Selected pins to check the status.
* This parameter can be any combination of the IO pins.
* @retval IO_OK: if read status OK. Other value if error.
*/
uint8_t BSP_IO_ITGetStatus(uint16_t IO_Pin)
{
/* Return the IO Pin IT status */
return (io_driver->ITStatus(IO_I2C_ADDRESS, IO_Pin));
}
/**
* @brief Clears the selected IO IT pending bit.
* @param IO_Pin: Selected pins to check the status.
* This parameter can be any combination of the IO pins.
*/
void BSP_IO_ITClear(uint16_t IO_Pin)
{
io_driver->ClearIT(IO_I2C_ADDRESS, IO_Pin);
}
/**
* @brief Configures the IO pin(s) according to IO mode structure value.
* @param IO_Pin: Output pin to be set or reset.
* This parameter can be one of the following values:
* @arg STMPE811_PIN_x: where x can be from 0 to 7
* @param IO_Mode: IO pin mode to configure
* This parameter can be one of the following values:
* @arg IO_MODE_INPUT
* @arg IO_MODE_OUTPUT
* @arg IO_MODE_IT_RISING_EDGE
* @arg IO_MODE_IT_FALLING_EDGE
* @arg IO_MODE_IT_LOW_LEVEL
* @arg IO_MODE_IT_HIGH_LEVEL
* @retval IO_OK: if all initializations are OK. Other value if error.
*/
uint8_t BSP_IO_ConfigPin(uint16_t IO_Pin, IO_ModeTypedef IO_Mode)
{
/* Configure the selected IO pin(s) mode */
io_driver->Config(IO_I2C_ADDRESS, IO_Pin, IO_Mode);
return IO_OK;
}
/**
* @brief Sets the selected pins state.
* @param IO_Pin: Selected pins to write.
* This parameter can be any combination of the IO pins.
* @param PinState: New pins state to write
*/
void BSP_IO_WritePin(uint16_t IO_Pin, uint8_t PinState)
{
io_driver->WritePin(IO_I2C_ADDRESS, IO_Pin, PinState);
}
/**
* @brief Gets the selected pins current state.
* @param IO_Pin: Selected pins to read.
* This parameter can be any combination of the IO pins.
* @retval The current pins state
*/
uint16_t BSP_IO_ReadPin(uint16_t IO_Pin)
{
return(io_driver->ReadPin(IO_I2C_ADDRESS, IO_Pin));
}
/**
* @brief Toggles the selected pins state
* @param IO_Pin: Selected pins to toggle.
* This parameter can be any combination of the IO pins.
*/
void BSP_IO_TogglePin(uint16_t IO_Pin)
{
if(io_driver->ReadPin(IO_I2C_ADDRESS, IO_Pin) == 1) /* Set */
{
io_driver->WritePin(IO_I2C_ADDRESS, IO_Pin, 0); /* Reset */
}
else
{
io_driver->WritePin(IO_I2C_ADDRESS, IO_Pin, 1); /* Set */
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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