text: /**
    ******************************************************************************
    * @file    stm32g0xx_hal_gpio.h
    * @author  MCD Application Team
    * @brief   Header file of GPIO HAL module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2018 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
    *
    ******************************************************************************
    */
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef STM32G0xx_HAL_GPIO_H
  #define STM32G0xx_HAL_GPIO_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32g0xx_hal_def.h"
  
  /** @addtogroup STM32G0xx_HAL_Driver
    * @{
    */
  
  /** @defgroup GPIO GPIO
    * @brief GPIO HAL module driver
    * @{
    */
  
  /* Exported types ------------------------------------------------------------*/
  
  /** @defgroup GPIO_Exported_Types GPIO Exported Types
    * @{
    */
  /**
    * @brief   GPIO Init structure definition
    */
  typedef struct
  {
    uint32_t Pin;        /*!< Specifies the GPIO pins to be configured.
                             This parameter can be any value of @ref GPIO_pins */
  
    uint32_t Mode;       /*!< Specifies the operating mode for the selected pins.
                             This parameter can be a value of @ref GPIO_mode */
  
    uint32_t Pull;       /*!< Specifies the Pull-up or Pull-Down activation for the selected pins.
                             This parameter can be a value of @ref GPIO_pull */
  
    uint32_t Speed;      /*!< Specifies the speed for the selected pins.
                             This parameter can be a value of @ref GPIO_speed */
  
    uint32_t Alternate;  /*!< Peripheral to be connected to the selected pins
                              This parameter can be a value of @ref GPIOEx_Alternate_function_selection */
  } GPIO_InitTypeDef;
  
  /**
    * @brief  GPIO Bit SET and Bit RESET enumeration
    */
  typedef enum
  {
    GPIO_PIN_RESET = 0U,
    GPIO_PIN_SET
  } GPIO_PinState;
  /**
    * @}
    */
  
  /* Exported constants --------------------------------------------------------*/
  /** @defgroup GPIO_Exported_Constants GPIO Exported Constants
    * @{
    */
  /** @defgroup GPIO_pins GPIO pins
    * @{
    */
  #define GPIO_PIN_0                 ((uint16_t)0x0001)  /* Pin 0 selected    */
  #define GPIO_PIN_1                 ((uint16_t)0x0002)  /* Pin 1 selected    */
  #define GPIO_PIN_2                 ((uint16_t)0x0004)  /* Pin 2 selected    */
  #define GPIO_PIN_3                 ((uint16_t)0x0008)  /* Pin 3 selected    */
  #define GPIO_PIN_4                 ((uint16_t)0x0010)  /* Pin 4 selected    */
  #define GPIO_PIN_5                 ((uint16_t)0x0020)  /* Pin 5 selected    */
  #define GPIO_PIN_6                 ((uint16_t)0x0040)  /* Pin 6 selected    */
  #define GPIO_PIN_7                 ((uint16_t)0x0080)  /* Pin 7 selected    */
  #define GPIO_PIN_8                 ((uint16_t)0x0100)  /* Pin 8 selected    */
  #define GPIO_PIN_9                 ((uint16_t)0x0200)  /* Pin 9 selected    */
  #define GPIO_PIN_10                ((uint16_t)0x0400)  /* Pin 10 selected   */
  #define GPIO_PIN_11                ((uint16_t)0x0800)  /* Pin 11 selected   */
  #define GPIO_PIN_12                ((uint16_t)0x1000)  /* Pin 12 selected   */
  #define GPIO_PIN_13                ((uint16_t)0x2000)  /* Pin 13 selected   */
  #define GPIO_PIN_14                ((uint16_t)0x4000)  /* Pin 14 selected   */
  #define GPIO_PIN_15                ((uint16_t)0x8000)  /* Pin 15 selected   */
  #define GPIO_PIN_All               ((uint16_t)0xFFFF)  /* All pins selected */
  
  #define GPIO_PIN_MASK              (0x0000FFFFu) /* PIN mask for assert test */
  /**
    * @}
    */
  
  /** @defgroup GPIO_mode GPIO mode
    * @brief GPIO Configuration Mode
    *        Elements values convention: 0x00WX00YZ
    *           - W  : EXTI trigger detection on 3 bits
    *           - X  : EXTI mode (IT or Event) on 2 bits
    *           - Y  : Output type (Push Pull or Open Drain) on 1 bit
    *           - Z  : GPIO mode (Input, Output, Alternate or Analog) on 2 bits
    * @{
    */
  #define GPIO_MODE_INPUT                 MODE_INPUT                                                  /*!< Input Floating Mode                                                */
  #define GPIO_MODE_OUTPUT_PP             (MODE_OUTPUT | OUTPUT_PP)                                   /*!< Output Push Pull Mode                                              */
  #define GPIO_MODE_OUTPUT_OD             (MODE_OUTPUT | OUTPUT_OD)                                   /*!< Output Open Drain Mode                                             */
  #define GPIO_MODE_AF_PP                 (MODE_AF | OUTPUT_PP)                                       /*!< Alternate Function Push Pull Mode                                  */
  #define GPIO_MODE_AF_OD                 (MODE_AF | OUTPUT_OD)                                       /*!< Alternate Function Open Drain Mode                                 */
  #define GPIO_MODE_ANALOG                MODE_ANALOG                                                 /*!< Analog Mode                                                        */
  #define GPIO_MODE_IT_RISING             (MODE_INPUT | EXTI_IT | TRIGGER_RISING)                     /*!< External Interrupt Mode with Rising edge trigger detection         */
  #define GPIO_MODE_IT_FALLING            (MODE_INPUT | EXTI_IT | TRIGGER_FALLING)                    /*!< External Interrupt Mode with Falling edge trigger detection        */
  #define GPIO_MODE_IT_RISING_FALLING     (MODE_INPUT | EXTI_IT | TRIGGER_RISING | TRIGGER_FALLING)   /*!< External Interrupt Mode with Rising/Falling edge trigger detection */
  #define GPIO_MODE_EVT_RISING            (MODE_INPUT | EXTI_EVT | TRIGGER_RISING)                    /*!< External Event Mode with Rising edge trigger detection             */
  #define GPIO_MODE_EVT_FALLING           (MODE_INPUT | EXTI_EVT | TRIGGER_FALLING)                   /*!< External Event Mode with Falling edge trigger detection            */
  #define GPIO_MODE_EVT_RISING_FALLING    (MODE_INPUT | EXTI_EVT | TRIGGER_RISING | TRIGGER_FALLING)  /*!< External Event Mode with Rising/Falling edge trigger detection     */
  /**
    * @}
    */
  
  /** @defgroup GPIO_speed GPIO speed
    * @brief GPIO Output Maximum frequency
    * @{
    */
  #define GPIO_SPEED_FREQ_LOW             0x00000000u  /*!< Low speed       */
  #define GPIO_SPEED_FREQ_MEDIUM          0x00000001u  /*!< Medium speed    */
  #define GPIO_SPEED_FREQ_HIGH            0x00000002u  /*!< High speed      */
  #define GPIO_SPEED_FREQ_VERY_HIGH       0x00000003u  /*!< Very high speed */
  /**
    * @}
    */
  
  /** @defgroup GPIO_pull GPIO pull
    * @brief GPIO Pull-Up or Pull-Down Activation
    * @{
    */
  #define GPIO_NOPULL                     0x00000000u   /*!< No Pull-up or Pull-down activation  */
  #define GPIO_PULLUP                     0x00000001u   /*!< Pull-up activation                  */
  #define GPIO_PULLDOWN                   0x00000002u   /*!< Pull-down activation                */
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /* Exported macro ------------------------------------------------------------*/
  /** @defgroup GPIO_Exported_Macros GPIO Exported Macros
    * @{
    */
  
  /**
    * @brief  Check whether the specified EXTI line is rising edge asserted or not.
    * @param  __EXTI_LINE__ specifies the EXTI line to check.
    *          This parameter can be GPIO_PIN_x where x can be(0..15)
    * @retval The new state of __EXTI_LINE__ (SET or RESET).
    */
  #define __HAL_GPIO_EXTI_GET_RISING_IT(__EXTI_LINE__)         (EXTI->RPR1 & (__EXTI_LINE__))
  
  /**
    * @brief  Clear the EXTI line rising pending bits.
    * @param  __EXTI_LINE__ specifies the EXTI lines to clear.
    *          This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
    * @retval None
    */
  #define __HAL_GPIO_EXTI_CLEAR_RISING_IT(__EXTI_LINE__)       (EXTI->RPR1 = (__EXTI_LINE__))
  
  /**
    * @brief  Check whether the specified EXTI line is falling edge asserted or not.
    * @param  __EXTI_LINE__ specifies the EXTI line to check.
    *          This parameter can be GPIO_PIN_x where x can be(0..15)
    * @retval The new state of __EXTI_LINE__ (SET or RESET).
    */
  #define __HAL_GPIO_EXTI_GET_FALLING_IT(__EXTI_LINE__)        (EXTI->FPR1 & (__EXTI_LINE__))
  
  /**
    * @brief  Clear the EXTI line falling pending bits.
    * @param  __EXTI_LINE__ specifies the EXTI lines to clear.
    *          This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
    * @retval None
    */
  #define __HAL_GPIO_EXTI_CLEAR_FALLING_IT(__EXTI_LINE__)      (EXTI->FPR1 = (__EXTI_LINE__))
  
  /**
    * @brief  Check whether the specified EXTI line is asserted or not.
    * @param __EXTI_LINE__ specifies the EXTI line to check.
    *          This parameter can be GPIO_PIN_x where x can be(0..15)
    * @retval The new state of __EXTI_LINE__ (SET or RESET).
    */
  #define __HAL_GPIO_EXTI_GET_IT(__EXTI_LINE__)         (__HAL_GPIO_EXTI_GET_RISING_IT(__EXTI_LINE__) || \
                                                         __HAL_GPIO_EXTI_GET_FALLING_IT(__EXTI_LINE__))
  
  /**
    * @brief  Clear the EXTI's line pending bits.
    * @param  __EXTI_LINE__ specifies the EXTI lines to clear.
    *          This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
    * @retval None
    */
  #define __HAL_GPIO_EXTI_CLEAR_IT(__EXTI_LINE__)         \
    do {                                                  \
      __HAL_GPIO_EXTI_CLEAR_RISING_IT(__EXTI_LINE__);     \
      __HAL_GPIO_EXTI_CLEAR_FALLING_IT(__EXTI_LINE__);    \
    } while(0)
  
  
  /**
    * @brief  Generate a Software interrupt on selected EXTI line.
    * @param __EXTI_LINE__ specifies the EXTI line to check.
    *          This parameter can be GPIO_PIN_x where x can be(0..15)
    * @retval None
    */
  #define __HAL_GPIO_EXTI_GENERATE_SWIT(__EXTI_LINE__)  (EXTI->SWIER1 |= (__EXTI_LINE__))
  
  /**
    * @brief  Check whether the specified EXTI line flag is set or not.
    * @param  __EXTI_LINE__ specifies the EXTI line flag to check.
    *         This parameter can be GPIO_PIN_x where x can be(0..15)
    * @retval The new state of __EXTI_LINE__ (SET or RESET).
    */
  #define __HAL_GPIO_EXTI_GET_FLAG(__EXTI_LINE__)       __HAL_GPIO_EXTI_GET_IT(__EXTI_LINE__)
  
  /**
    * @brief  Clear the EXTI line pending flags.
    * @param  __EXTI_LINE__ specifies the EXTI lines flags to clear.
    *         This parameter can be any combination of GPIO_PIN_x where x can be (0..15)
    * @retval None
    */
  #define __HAL_GPIO_EXTI_CLEAR_FLAG(__EXTI_LINE__)     __HAL_GPIO_EXTI_CLEAR_IT(__EXTI_LINE__)
  
  /**
    * @}
    */
  
  /* Private macros ------------------------------------------------------------*/
  /** @defgroup GPIO_Private_Constants GPIO Private Constants
    * @{
    */
  #define GPIO_MODE_Pos                           0u
  #define GPIO_MODE                               (0x3uL << GPIO_MODE_Pos)
  #define MODE_INPUT                              (0x0uL << GPIO_MODE_Pos)
  #define MODE_OUTPUT                             (0x1uL << GPIO_MODE_Pos)
  #define MODE_AF                                 (0x2uL << GPIO_MODE_Pos)
  #define MODE_ANALOG                             (0x3uL << GPIO_MODE_Pos)
  #define OUTPUT_TYPE_Pos                         4u
  #define OUTPUT_TYPE                             (0x1uL << OUTPUT_TYPE_Pos)
  #define OUTPUT_PP                               (0x0uL << OUTPUT_TYPE_Pos)
  #define OUTPUT_OD                               (0x1uL << OUTPUT_TYPE_Pos)
  #define EXTI_MODE_Pos                           16u
  #define EXTI_MODE                               (0x3uL << EXTI_MODE_Pos)
  #define EXTI_IT                                 (0x1uL << EXTI_MODE_Pos)
  #define EXTI_EVT                                (0x2uL << EXTI_MODE_Pos)
  #define TRIGGER_MODE_Pos                         20u
  #define TRIGGER_MODE                            (0x7uL << TRIGGER_MODE_Pos)
  #define TRIGGER_RISING                          (0x1uL << TRIGGER_MODE_Pos)
  #define TRIGGER_FALLING                         (0x2uL << TRIGGER_MODE_Pos)
  /**
    * @}
    */
  
  /** @defgroup GPIO_Private_Macros GPIO Private Macros
    * @{
    */
  #define IS_GPIO_PIN_ACTION(ACTION)  (((ACTION) == GPIO_PIN_RESET) || ((ACTION) == GPIO_PIN_SET))
  
  #define IS_GPIO_PIN(__PIN__)        ((((uint32_t)(__PIN__) & GPIO_PIN_MASK) != 0x00u) &&\
                                       (((uint32_t)(__PIN__) & ~GPIO_PIN_MASK) == 0x00u))
  
  #define IS_GPIO_MODE(__MODE__)      (((__MODE__) == GPIO_MODE_INPUT)              ||\
                                       ((__MODE__) == GPIO_MODE_OUTPUT_PP)          ||\
                                       ((__MODE__) == GPIO_MODE_OUTPUT_OD)          ||\
                                       ((__MODE__) == GPIO_MODE_AF_PP)              ||\
                                       ((__MODE__) == GPIO_MODE_AF_OD)              ||\
                                       ((__MODE__) == GPIO_MODE_IT_RISING)          ||\
                                       ((__MODE__) == GPIO_MODE_IT_FALLING)         ||\
                                       ((__MODE__) == GPIO_MODE_IT_RISING_FALLING)  ||\
                                       ((__MODE__) == GPIO_MODE_EVT_RISING)         ||\
                                       ((__MODE__) == GPIO_MODE_EVT_FALLING)        ||\
                                       ((__MODE__) == GPIO_MODE_EVT_RISING_FALLING) ||\
                                       ((__MODE__) == GPIO_MODE_ANALOG))
  
  #define IS_GPIO_SPEED(__SPEED__)    (((__SPEED__) == GPIO_SPEED_FREQ_LOW)    ||\
                                       ((__SPEED__) == GPIO_SPEED_FREQ_MEDIUM) ||\
                                       ((__SPEED__) == GPIO_SPEED_FREQ_HIGH)   ||\
                                       ((__SPEED__) == GPIO_SPEED_FREQ_VERY_HIGH))
  
  #define IS_GPIO_PULL(__PULL__)      (((__PULL__) == GPIO_NOPULL)   ||\
                                       ((__PULL__) == GPIO_PULLUP)   || \
                                       ((__PULL__) == GPIO_PULLDOWN))
  /**
    * @}
    */
  
  /* Include GPIO HAL Extended module */
  #include "stm32g0xx_hal_gpio_ex.h"
  
  /* Exported functions --------------------------------------------------------*/
  /** @defgroup GPIO_Exported_Functions GPIO Exported Functions
   *  @brief    GPIO Exported Functions
    * @{
    */
  
  /** @defgroup GPIO_Exported_Functions_Group1 Initialization/de-initialization functions
   *  @brief    Initialization and Configuration functions
   * @{
   */
  
  /* Initialization and de-initialization functions *****************************/
  void              HAL_GPIO_Init(GPIO_TypeDef  *GPIOx, GPIO_InitTypeDef *GPIO_Init);
  void              HAL_GPIO_DeInit(GPIO_TypeDef  *GPIOx, uint32_t GPIO_Pin);
  
  /**
    * @}
    */
  
  /** @defgroup GPIO_Exported_Functions_Group2 IO operation functions
   *  @brief    IO operation functions
   * @{
   */
  
  /* IO operation functions *****************************************************/
  GPIO_PinState     HAL_GPIO_ReadPin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin);
  void              HAL_GPIO_WritePin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState);
  void              HAL_GPIO_TogglePin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin);
  HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef *GPIOx, uint16_t GPIO_Pin);
  void              HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin);
  void              HAL_GPIO_EXTI_Rising_Callback(uint16_t GPIO_Pin);
  void              HAL_GPIO_EXTI_Falling_Callback(uint16_t GPIO_Pin);
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* STM32G0xx_HAL_GPIO_H */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  