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stm32f10x_gpio.c ( 文件浏览 )

  • aaa923124003 发布于2018-04-23
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			/**
  ******************************************************************************
  * @file    stm32f10x_gpio.c
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    11-March-2011
  * @brief   This file provides all the GPIO firmware functions.
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_gpio.h"
#include "stm32f10x_rcc.h"

/** @addtogroup STM32F10x_StdPeriph_Driver
  * @{

  */

/** @defgroup GPIO 
  * @brief GPIO driver modules
  * @{

  */ 

/** @defgroup GPIO_Private_TypesDefinitions
  * @{

  */

/**
  * @
}
  */

/** @defgroup GPIO_Private_Defines
  * @{

  */

/* ------------ RCC registers bit address in the alias region ----------------*/
#define AFIO_OFFSET                 (AFIO_BASE - PERIPH_BASE)

/* --- EVENTCR Register -----*/

/* Alias word address of EVOE bit */
#define EVCR_OFFSET                 (AFIO_OFFSET + 0x00)
#define EVOE_BitNumber              ((uint8_t)0x07)
#define EVCR_EVOE_BB                (PERIPH_BB_BASE + (EVCR_OFFSET * 32) + (EVOE_BitNumber * 4))


/* ---  MAPR Register ---*/ 
/* Alias word address of MII_RMII_SEL bit */ 
#define MAPR_OFFSET                 (AFIO_OFFSET + 0x04) 
#define MII_RMII_SEL_BitNumber      ((u8)0x17) 
#define MAPR_MII_RMII_SEL_BB        (PERIPH_BB_BASE + (MAPR_OFFSET * 32) + (MII_RMII_SEL_BitNumber * 4))


#define EVCR_PORTPINCONFIG_MASK     ((uint16_t)0xFF80)
#define LSB_MASK                    ((uint16_t)0xFFFF)
#define DBGAFR_POSITION_MASK        ((uint32_t)0x000F0000)
#define DBGAFR_SWJCFG_MASK          ((uint32_t)0xF0FFFFFF)
#define DBGAFR_LOCATION_MASK        ((uint32_t)0x00200000)
#define DBGAFR_NUMBITS_MASK         ((uint32_t)0x00100000)
/**
  * @
}
  */

/** @defgroup GPIO_Private_Macros
  * @{

  */

/**
  * @
}
  */

/** @defgroup GPIO_Private_Variables
  * @{

  */

/**
  * @
}
  */

/** @defgroup GPIO_Private_FunctionPrototypes
  * @{

  */

/**
  * @
}
  */

/** @defgroup GPIO_Private_Functions
  * @{

  */

/**
  * @brief  Deinitializes the GPIOx peripheral registers to their default reset values.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @retval None
  */
void GPIO_DeInit(GPIO_TypeDef* GPIOx)
{

  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  
  if (GPIOx == GPIOA)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA, DISABLE);
  
}
  else if (GPIOx == GPIOB)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOB, DISABLE);
  
}
  else if (GPIOx == GPIOC)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC, DISABLE);
  
}
  else if (GPIOx == GPIOD)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOD, DISABLE);
  
}    
  else if (GPIOx == GPIOE)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOE, DISABLE);
  
} 
  else if (GPIOx == GPIOF)
  {

    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, ENABLE);
    RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOF, DISABLE);
  
}
  else
  {

    if (GPIOx == GPIOG)
    {

      RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, ENABLE);
      RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOG, DISABLE);
    
}
  
}

}

/**
  * @brief  Deinitializes the Alternate Functions (remap, event control
  *   and EXTI configuration) registers to their default reset values.
  * @param  None
  * @retval None
  */
void GPIO_AFIODeInit(void)
{

  RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, ENABLE);
  RCC_APB2PeriphResetCmd(RCC_APB2Periph_AFIO, DISABLE);

}

/**
  * @brief  Initializes the GPIOx peripheral according to the specified
  *         parameters in the GPIO_InitStruct.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
  *         contains the configuration information for the specified GPIO peripheral.
  * @retval None
  */
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
{

  uint32_t currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;
  uint32_t tmpreg = 0x00, pinmask = 0x00;
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
  assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));  
  
/*---------------------------- GPIO Mode Configuration -----------------------*/
  currentmode = ((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x0F);
  if ((((uint32_t)GPIO_InitStruct->GPIO_Mode) & ((uint32_t)0x10)) != 0x00)
  {
 
    /* Check the parameters */
    assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
    /* Output mode */
    currentmode |= (uint32_t)GPIO_InitStruct->GPIO_Speed;
  
}
/*---------------------------- GPIO CRL Configuration ------------------------*/
  /* Configure the eight low port pins */
  if (((uint32_t)GPIO_InitStruct->GPIO_Pin & ((uint32_t)0x00FF)) != 0x00)
  {

    tmpreg = GPIOx->CRL;
    for (pinpos = 0x00; pinpos < 0x08; pinpos++)
    {

      pos = ((uint32_t)0x01) << pinpos;
      /* Get the port pins position */
      currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
      if (currentpin == pos)
      {

        pos = pinpos << 2;
        /* Clear the corresponding low control register bits */
        pinmask = ((uint32_t)0x0F) << pos;
        tmpreg &= ~pinmask;
        /* Write the mode configuration in the corresponding bits */
        tmpreg |= (currentmode << pos);
        /* Reset the corresponding ODR bit */
        if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
        {

          GPIOx->BRR = (((uint32_t)0x01) << pinpos);
        
}
        else
        {

          /* Set the corresponding ODR bit */
          if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
          {

            GPIOx->BSRR = (((uint32_t)0x01) << pinpos);
          
}
        
}
      
}
    
}
    GPIOx->CRL = tmpreg;
  
}
/*---------------------------- GPIO CRH Configuration ------------------------*/
  /* Configure the eight high port pins */
  if (GPIO_InitStruct->GPIO_Pin > 0x00FF)
  {

    tmpreg = GPIOx->CRH;
    for (pinpos = 0x00; pinpos < 0x08; pinpos++)
    {

      pos = (((uint32_t)0x01) << (pinpos + 0x08));
      /* Get the port pins position */
      currentpin = ((GPIO_InitStruct->GPIO_Pin) & pos);
      if (currentpin == pos)
      {

        pos = pinpos << 2;
        /* Clear the corresponding high control register bits */
        pinmask = ((uint32_t)0x0F) << pos;
        tmpreg &= ~pinmask;
        /* Write the mode configuration in the corresponding bits */
        tmpreg |= (currentmode << pos);
        /* Reset the corresponding ODR bit */
        if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPD)
        {

          GPIOx->BRR = (((uint32_t)0x01) << (pinpos + 0x08));
        
}
        /* Set the corresponding ODR bit */
        if (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_IPU)
        {

          GPIOx->BSRR = (((uint32_t)0x01) << (pinpos + 0x08));
        
}
      
}
    
}
    GPIOx->CRH = tmpreg;
  
}

}

/**
  * @brief  Fills each GPIO_InitStruct member with its default value.
  * @param  GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will
  *         be initialized.
  * @retval None
  */
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
{

  /* Reset GPIO init structure parameters values */
  GPIO_InitStruct->GPIO_Pin  = GPIO_Pin_All;
  GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN_FLOATING;

}

/**
  * @brief  Reads the specified input port pin.
  * @param  GPIOx: where x can be (A..G) 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.
  */
uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{

  uint8_t bitstatus = 0x00;
  
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); 
  
  if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET)
  {

    bitstatus = (uint8_t)Bit_SET;
  
}
  else
  {

    bitstatus = (uint8_t)Bit_RESET;
  
}
  return bitstatus;

}

/**
  * @brief  Reads the specified GPIO input data port.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @retval GPIO input data port value.
  */
uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
{

  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  
  return ((uint16_t)GPIOx->IDR);

}

/**
  * @brief  Reads the specified output data port bit.
  * @param  GPIOx: where x can be (A..G) 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 output port pin value.
  */
uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{

  uint8_t bitstatus = 0x00;
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GET_GPIO_PIN(GPIO_Pin)); 
  
  if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET
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01.97 kB
sys.c5.10 kB2017-12-17|23:19
sys.h2.98 kB2017-12-17|23:19
01.97 kB
usart.c4.97 kB2015-03-23|12:28
usart.h1.25 kB2012-09-13|14:17
01.97 kB
main.c4.46 kB2017-12-17|23:19
Release_Notes.html29.41 kB2011-04-06|18:15
startup_stm32f10x_hd.lst49.81 kB2017-12-17|23:19
stm32f10x.h619.08 kB2011-03-10|10:51
stm32f10x_conf.h3.18 kB2017-10-14|09:49
stm32f10x_it.c4.30 kB2011-04-04|19:03
stm32f10x_it.h2.04 kB2011-04-04|19:03
system_stm32f10x.c35.70 kB2011-04-04|19:03
system_stm32f10x.h2.04 kB2011-03-10|10:51
template.build_log.htm7.28 kB2017-10-14|09:38
template.map89.78 kB2017-12-17|23:19
template.uvgui.ZHENG70.76 kB2017-12-18|10:43
template.uvgui_ZHENG.bak70.58 kB2017-12-14|10:32
template.uvopt19.72 kB2017-12-07|15:36
template.uvproj21.42 kB2017-12-07|15:36
template_Target55.85 kB2017-12-17|23:19
template_uvopt.bak18.77 kB2017-11-26|10:06
template_uvproj.bak20.94 kB2017-11-26|10:06
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