File content as of revision 0:bacc6e701fb4:

/*
 / _____)             _              | |
( (____  _____ ____ _| |_ _____  ____| |__
 \____ \| ___ |    (_   _) ___ |/ ___)  _ \
 _____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
    (C)2013 Semtech

Description: Bleeper board GPIO driver implementation

License: Revised BSD License, see LICENSE.TXT file include in the project

Maintainer: Miguel Luis and Gregory Cristian
*/
 /******************************************************************************
  * @file    hw_gpio.c
  * @author  MCD Application Team
  * @version V1.1.4
  * @date    08-January-2018
  * @brief   driver for GPIO
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V. 
  * All rights reserved.</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice, 
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other 
  *    contributors to this software may be used to endorse or promote products 
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this 
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under 
  *    this license is void and will automatically terminate your rights under 
  *    this license. 
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
static GpioIrqHandler *GpioIrq[16] = { NULL };

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

static uint8_t HW_GPIO_GetBitPos(uint16_t GPIO_Pin);
static IRQn_Type MSP_GetIRQn( uint16_t gpioPin);

/* 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 );
}

/*!
 * @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;
}


/*!
 * GPIO IRQ handler function prototype
 */
static IRQn_Type MSP_GetIRQn(uint16_t GPIO_Pin)
{
  switch (GPIO_Pin)
  {
    case GPIO_PIN_0:
    case GPIO_PIN_1:  return EXTI0_1_IRQn;
    case GPIO_PIN_2:
    case GPIO_PIN_3:  return EXTI2_3_IRQn;
    case GPIO_PIN_4:
    case GPIO_PIN_5:
    case GPIO_PIN_6:
    case GPIO_PIN_7:
    case GPIO_PIN_8:
    case GPIO_PIN_9:
    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 EXTI4_15_IRQn;
  }
}

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