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標(biāo)題: stm32 ARM的GPIO操作 [打印本頁]

作者: xuwei 時(shí)間: 2015-6-23 14:35
標(biāo)題: stm32 ARM的GPIO操作
/**
  ******************************************************************************
  * @file GPIO/IOToggle/main.c
  * @author  MCD Application Team
  * @version V3.5.0
  * @date 08-April-2011
  * @brief Main program body.
  ******************************************************************************
  * @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>© COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"//

void delay(u32 time)//延時(shí)函數(shù)
{

for(time;time;time--);


}
/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */
/** @addtogroup GPIO_IOToggle
  * @{
  */
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;//說明一個(gè)結(jié)構(gòu)變量 GPIO_InitStructure，這里的GPIO_InitTypeDef是ST公司封轉(zhuǎn)好的我的理解，
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured,
   this is done through SystemInit() function which is called from startup
   file (startup_stm32f10x_xx.s) before to branch to application main.
   To reconfigure the default setting of SystemInit() function, refer to
   system_stm32f10x.c file
   */

  /* GPIOD Periph clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);//使能D口得時(shí)鐘
  /* 設(shè)置上面的結(jié)構(gòu)變量里德參數(shù)包括引腳、速度、和引腳狀態(tài)吧D口設(shè)置為默認(rèn)初始化 */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9| GPIO_Pin_10| GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

  while (1)//嘿嘿我調(diào)用的庫的程序
  {

GPIO_SetBits(GPIOD, GPIO_Pin_8);
delay(0xfffff);
GPIO_ResetBits(GPIOD, GPIO_Pin_8);
  delay(0xfffff);


  }
}

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