/**
  ******************************************************************************
  * File Name          : gpio.c
  * Description        : This file provides code for the configuration
  *                      of all used GPIO pins.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "gpio.h"
#include "board_common.h"
/* USER CODE END 0 */

/*----------------------------------------------------------------------------*/
/* Configure GPIO                                                             */
/*----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------*/
/* Configure GPIO                                                             */
/*----------------------------------------------------------------------------*/
extern IRQn_Type MSP_GetIRQn( uint16_t GPIO_Pin);

/** Configure pins as 
        * Analog 
        * Input 
        * Output
        * EVENT_OUT
        * EXTI
*/
void Board_GPIOInit(void)
{

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
}

static GpioIrqHandler *GpioIrq[16] = { NULL };

/* Private function prototypes -----------------------------------------------*/

static uint8_t HW_GPIO_GetBitPos(uint16_t GPIO_Pin);

/* Exported functions ---------------------------------------------------------*/
/*!
 * @brief Initializes the given GPIO object
 *
 * @param  GPIOx: where x can be (A..E and H)
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @param [IN] initStruct  GPIO_InitTypeDef intit structure
 * @retval none
 */
void HW_GPIO_Init( GPIO_TypeDef* port, uint16_t GPIO_Pin, GPIO_InitTypeDef* initStruct)
{

  RCC_GPIO_CLK_ENABLE(  (uint32_t) port);

  initStruct->Pin = GPIO_Pin ;

  HAL_GPIO_Init( port, initStruct );
}

void HW_GPIO_DeInit( GPIO_TypeDef* port, uint16_t GPIO_Pin)
{
    HAL_GPIO_DeInit(port, GPIO_Pin);
}



/*!
 * @brief Records the interrupt handler for the GPIO  object
 *
 * @param  GPIOx: where x can be (A..E and H) 
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @param [IN] prio       NVIC priority (0 is highest)
 * @param [IN] irqHandler  points to the  function to execute
 * @retval none
 */
void HW_GPIO_SetIrq( GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, uint32_t prio,  GpioIrqHandler *irqHandler )
{
  IRQn_Type IRQnb;
  
  uint32_t BitPos = HW_GPIO_GetBitPos( GPIO_Pin ) ;
  
  if ( irqHandler != NULL)
  {
    GpioIrq[ BitPos ] = irqHandler;

    IRQnb = MSP_GetIRQn( GPIO_Pin );

    HAL_NVIC_SetPriority( IRQnb , prio, 0);
    
    HAL_NVIC_EnableIRQ( IRQnb );
  }
  else
  {
    GpioIrq[ BitPos ] = NULL;
  }
}

/*!
 * @brief Execute the interrupt from the object
 *
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @retval none
 */
void HW_GPIO_IrqHandler( uint16_t GPIO_Pin )
{
  uint32_t BitPos = HW_GPIO_GetBitPos( GPIO_Pin );
  
  if ( GpioIrq[ BitPos ]  != NULL)
  {
    GpioIrq[ BitPos ] ( );
  }
}

/*!
 * @brief Writes the given value to the GPIO output
 *
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @param [IN] value New GPIO output value
 * @retval none
 */
void HW_GPIO_Write( GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin,  uint32_t value )
{
  HAL_GPIO_WritePin( GPIOx, GPIO_Pin , (GPIO_PinState) value );
}

/*!
 * @brief Reads the current GPIO input value
 *
 * @param  GPIOx: where x can be (A..E and H) 
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @retval value   Current GPIO input value
 */
uint32_t HW_GPIO_Read( GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin )
{
  return HAL_GPIO_ReadPin( GPIOx, GPIO_Pin);
}

/* Private functions ---------------------------------------------------------*/

/*!
 * @brief Get the position of the bit set in the GPIO_Pin
 * @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).
 *                   All port bits are not necessarily available on all GPIOs.
 * @retval the position of the bit
 */
static uint8_t HW_GPIO_GetBitPos(uint16_t GPIO_Pin)
{
  uint8_t PinPos=0;
  
  if ( ( GPIO_Pin & 0xFF00 ) != 0) { PinPos |= 0x8; }
  if ( ( GPIO_Pin & 0xF0F0 ) != 0) { PinPos |= 0x4; }
  if ( ( GPIO_Pin & 0xCCCC ) != 0) { PinPos |= 0x2; }
  if ( ( GPIO_Pin & 0xAAAA ) != 0) { PinPos |= 0x1; }
  
  return PinPos;
}

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
  HW_GPIO_IrqHandler( GPIO_Pin );
}

/**
  * @brief  Gets IRQ number as a function of the GPIO_Pin.
  * @param  GPIO_Pin: Specifies the pins connected to the EXTI line.
  * @retval IRQ number
  */
IRQn_Type MSP_GetIRQn( uint16_t GPIO_Pin)
{
  switch( GPIO_Pin )
  {
    case GPIO_PIN_0:    return EXTI0_IRQn;
    case GPIO_PIN_1:    return EXTI1_IRQn;
    case GPIO_PIN_2:    return EXTI2_IRQn;
    case GPIO_PIN_3:    return EXTI3_IRQn;
    case GPIO_PIN_4:    return EXTI4_IRQn;
    case GPIO_PIN_5:
    case GPIO_PIN_6:
    case GPIO_PIN_7:
    case GPIO_PIN_8:
    case GPIO_PIN_9:    return EXTI9_5_IRQn;
    case GPIO_PIN_10:
    case GPIO_PIN_11:
    case GPIO_PIN_12:
    case GPIO_PIN_13:
    case GPIO_PIN_14:
    case GPIO_PIN_15:
    default: return EXTI15_10_IRQn;
  }
}

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