hw_gpio.c

/**
  ******************************************************************************
  * @file    hw_gpio.c
  * @author  Fahad Mirza (fahadmirza8@gmail.com)
  * @brief   GPIO interface on top of HAL GPIO interface 
  ******************************************************************************
  *                             /\     /\
  *                            {  `---'  }
  *                            {  O   O  }
  *                            ~~>  V  <~~
  *                             \  \|/  /
  *                              `-----'____
  *                              /     \    \_
  *                             {       }\  )_\_   _
  *                             |  \_/  |/ /  \_\_/ )
  *                              \__/  /(_/     \__/
  *                                (__/
  ******************************************************************************
  */

#include <stdint.h>
#include "stm32f4xx_hal.h"
#include "hw_gpio.h"


/* Exported functions -------------------------------------------------------*/
/**
  * @brief  Initialize GPIO
  * @param  port: GPIOx
  *         GPIO_Pin: GPIO_Pin_x
  *         initStruct: GPIO_InitTypeDef pointer
  * @retval None
  */
void HW_GPIO_Init(GPIO_TypeDef *port, uint16_t GPIO_Pin, GPIO_InitTypeDef *initStruct)
{
    /* Check the parameters */
    assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
    assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
    assert_param(IS_GPIO_PIN(GPIO_Pin));

    // Enable the corresponding PORT clock
    RCC_GPIO_CLK_ENABLE((uint32_t)port);

    uint32_t pinPos = 1;
    while (GPIO_Pin != 0)
	{
		if (GPIO_Pin & 0x1)
		{
			initStruct->Pin = pinPos;
			HAL_GPIO_Init(port, initStruct);
		}
		pinPos++;
		GPIO_Pin = GPIO_Pin >> 1;
	}
}