OpenHarmony-v4.0.1-Release/s

/**
  ******************************************************************************
  * @file    stm32mp1xx_hal_gpio.c
  * @author  MCD Application Team
  * @brief   GPIO HAL module driver.
  *          This file provides firmware functions to manage the following
  *          functionalities of the General Purpose Input/Output (GPIO) peripheral:
  *           + Initialization and de-initialization functions
  *           + IO operation functions
  *
  @verbatim
  ==============================================================================
                    ##### GPIO Peripheral features #####
  ==============================================================================
  [..]
  Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each
  port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software
  in several modes:
  (+) Input mode
  (+) Analog mode
  (+) Output mode
  (+) Alternate function mode
  (+) External interrupt/event lines

  [..]
  During and just after reset, the alternate functions and external interrupt
        lines are not active and the I/O ports are configured in input floating mode.

    (+) All GPIO pins have weak internal pull-up and pull-down resistors, which can be
        activated or not.

  [..]
  In Output or Alternate mode, each IO can be configured on open-drain or push-pull
        type and the IO speed can be selected depending on the VDD value.

  [..]
  All ports have external interrupt/event capability. To use external interrupt
        lines, the port must be configured in input mode. All available GPIO pins are
        connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.

  [..]
  The external interrupt/event controller consists of up to 23 edge detectors
        (16 lines are connected to GPIO) for generating event/interrupt requests (each
        input line can be independently configured to select the type (interrupt or event)
        and the corresponding trigger event (rising or falling or both). Each line can
        also be masked independently.

                     ##### How to use this driver #####
  ==============================================================================
  [..]
    (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE().

    (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
        (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
        (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
             structure.
        (++) In case of Output or alternate function mode selection: the speed is
             configured through "Speed" member from GPIO_InitTypeDef structure.
        (++) In alternate mode is selection, the alternate function connected to the IO
             is configured through "Alternate" member from GPIO_InitTypeDef structure.
        (++) Analog mode is required when a pin is to be used as ADC channel
             or DAC output.
        (++) In case of external interrupt/event selection the "Mode" member from
             GPIO_InitTypeDef structure select the type (interrupt or event) and
             the corresponding trigger event (rising or falling or both).

    (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
        mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
        HAL_NVIC_EnableIRQ().

    (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().

    (#) To set/reset the level of a pin configured in output mode use
        HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().

   (#) To lock pin configuration until next reset use HAL_GPIO_LockPin().


    (#) During and just after reset, the alternate functions are not
        active and the GPIO pins are configured in input floating mode (except JTAG
        pins).

    (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
        (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
        priority over the GPIO function.

    (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
        general purpose PH0 and PH1, respectively, when the HSE oscillator is off.
        The HSE has priority over the GPIO function.

  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32mp1xx_hal.h"

/** @addtogroup STM32MP1xx_HAL_Driver
  * @{
  */

/** @defgroup GPIO GPIO
  * @brief GPIO HAL module driver
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private defines ------------------------------------------------------------*/
/** @addtogroup GPIO_Private_Constants GPIO Private Constants
  * @{
  */
#define GPIO_MODE             ((uint32_t)0x00000003)
#define EXTI_MODE             ((uint32_t)0x10000000)
#define GPIO_MODE_IT          ((uint32_t)0x00010000)
#define GPIO_MODE_EVT         ((uint32_t)0x00020000)
#define RISING_EDGE           ((uint32_t)0x00100000)
#define FALLING_EDGE          ((uint32_t)0x00200000)
#define GPIO_OUTPUT_TYPE      ((uint32_t)0x00000010)

#define GPIO_NUMBER           ((uint32_t)16)
/**
  * @}
  */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup GPIO_Exported_Functions GPIO Exported Functions
  * @{
  */

/** @defgroup GPIO_Exported_Functions_Group1 Initialization and de-initialization functions
 *  @brief    Initialization and Configuration functions
 *
@verbatim
 ===============================================================================
              ##### Initialization and de-initialization functions #####
 ===============================================================================
  [..]
    This section provides functions allowing to initialize and de-initialize the GPIOs
    to be ready for use.

@endverbatim
  * @{
  */

/**
  * @brief  Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
  * @param  GPIOx: where x can be (A..K) to select the GPIO peripheral.
  * @param  GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
  *         the configuration information for the specified GPIO peripheral.
  * @retval None
  */
void HAL_GPIO_Init(GPIO_TypeDef  *GPIOx, GPIO_InitTypeDef *GPIO_Init)
{
  uint32_t position;
  uint32_t ioposition;
  uint32_t iocurrent;
  uint32_t temp;
#if 0 /* OHOS*/
  EXTI_Core_TypeDef * EXTI_CurrentCPU;

#if defined(CORE_CM4)
  EXTI_CurrentCPU = EXTI_C2; /* EXTI for CM4 CPU */
#else
  EXTI_CurrentCPU = EXTI_C1; /* EXTI for CA7 CPU */
#endif
#endif

  /* Configure the port pins */
  for(position = 0; position < GPIO_NUMBER; position++)
  {
    /* Get the IO position */
    ioposition = ((uint32_t)0x01) << position;
    /* Get the current IO position */
    iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;

    if(iocurrent == ioposition)
    {
      /*--------------------- GPIO Mode Configuration ------------------------*/
      /* In case of Alternate function mode selection */
      if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
      {
        /* Configure Alternate function mapped with the current IO */
        temp = GPIOx->AFR[position >> 3];
        temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
        temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4));
        GPIOx->AFR[position >> 3] = temp;
      }

      /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
      temp = GPIOx->MODER;
      temp &= ~(GPIO_MODER_MODER0 << (position * 2));
      temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
      GPIOx->MODER = temp;

      /* In case of Output or Alternate function mode selection */
      if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
         (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
      {
        /* Configure the IO Speed */
        temp = GPIOx->OSPEEDR;
        temp &= ~(GPIO_OSPEEDR_OSPEEDR0 << (position * 2));
        temp |= (GPIO_Init->Speed << (position * 2));
        GPIOx->OSPEEDR = temp;

        /* Configure the IO Output Type */
        temp = GPIOx->OTYPER;
        temp &= ~(GPIO_OTYPER_OT0 << position) ;
        temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
        GPIOx->OTYPER = temp;
      }

      /* Activate the Pull-up or Pull down resistor for the current IO */
      temp = GPIOx->PUPDR;
      temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
      temp |= ((GPIO_Init->Pull) << (position * 2));
      GPIOx->PUPDR = temp;

    }
  }
}

/**
  * @brief  De-initializes the GPIOx peripheral registers to their default reset values.
  * @param  GPIOx: where x can be (A..Z) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bit to be written.
  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).
  * @retval None
  */
void HAL_GPIO_DeInit(GPIO_TypeDef  *GPIOx, uint32_t GPIO_Pin)
{
  uint32_t position;
  uint32_t ioposition;
  uint32_t iocurrent;
#if 0 /* OHOS*/
  EXTI_Core_TypeDef * EXTI_CurrentCPU;

#if defined(CORE_CM4)
  EXTI_CurrentCPU = EXTI_C2; /* EXTI for CM4 CPU */
#else
  EXTI_CurrentCPU = EXTI_C1; /* EXTI for CA7 CPU */
#endif
#endif

  /* Configure the port pins */
  for(position = 0; position < GPIO_NUMBER; position++)
  {
    /* Get the IO position */
    ioposition = ((uint32_t)0x01) << position;
    /* Get the current IO position */
    iocurrent = (GPIO_Pin) & ioposition;

    if(iocurrent == ioposition)
    {
      /*------------------------- GPIO Mode Configuration --------------------*/
      /* Configure IO in Analog Mode */
      GPIOx->MODER |= (GPIO_MODER_MODER0 << (position * 2));

      /* Configure the default Alternate Function in current IO */
      GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;

      /* Configure the default value for IO Speed */
      GPIOx->OSPEEDR &= ~(GPIO_OSPEEDR_OSPEEDR0 << (position * 2));

      /* Configure the default value IO Output Type */
      GPIOx->OTYPER  &= ~(GPIO_OTYPER_OT0 << position) ;

      /* Deactivate the Pull-up and Pull-down resistor for the current IO */
      GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
    }
  }
}

/**
  * @}
  */

/** @defgroup GPIO_Exported_Functions_Group2 IO operation functions
 *  @brief GPIO Read, Write, Toggle, Lock and EXTI management functions.
 *
@verbatim
 ===============================================================================
                       ##### IO operation functions #####
 ===============================================================================

@endverbatim
  * @{
  */

/**
  * @brief  Reads the specified input port pin.
  * @param  GPIOx: where x can be (A..K) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bit to read.
  *         This parameter can be GPIO_PIN_x where x can be (0..15).
  * @retval The input port pin value.
  */
GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  GPIO_PinState bitstatus;

  if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
  {
    bitstatus = GPIO_PIN_SET;
  }
  else
  {
    bitstatus = GPIO_PIN_RESET;
  }
  return bitstatus;
}

/**
  * @brief  Sets or clears the selected data port bit.
  *
  * @note   This function uses GPIOx_BSRR register to allow atomic read/modify
  *         accesses. In this way, there is no risk of an IRQ occurring between
  *         the read and the modify access.
  *
  * @param  GPIOx: where x can be (A..K) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bit to be written.
  *          This parameter can be one of GPIO_PIN_x where x can be (0..15).
  * @param  PinState: specifies the value to be written to the selected bit.
  *          This parameter can be one of the GPIO_PinState enum values:
  *            @arg GPIO_PIN_RESET: to clear the port pin
  *            @arg GPIO_PIN_SET: to set the port pin
  * @retval None
  */
void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
{
  if (PinState != GPIO_PIN_RESET)
  {
    GPIOx->BSRR = GPIO_Pin;
  }
  else
  {
    GPIOx->BSRR = (uint32_t)GPIO_Pin << GPIO_NUMBER;
  }
}

/**
  * @brief  Toggles the specified GPIO pins.
  * @param  GPIOx: Where x can be (A..K) to select the GPIO peripheral.
  * @param  GPIO_Pin: Specifies the pins to be toggled.
  * @retval None
  */
void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  if ((GPIOx->ODR & GPIO_Pin) != 0x00u)
  {
    GPIOx->BRR = (uint32_t)GPIO_Pin;
  }
  else
  {
    GPIOx->BSRR = (uint32_t)GPIO_Pin;
  }
}

GPIO_DirState HAL_GPIO_ReadDir(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  GPIO_DirState bitstatus;

  if((GPIOx->MODER & GPIO_Pin*2) != (uint32_t)GPIO_PIN_RESET)
  {
    bitstatus = GPIO_DIR_OUTPUT;
  }
  else
  {
    bitstatus = GPIO_DIR_INPUT;
  }
  return bitstatus;
}

/**
  * @}
  */


/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/