實驗4-3 IOToggle ：流水燈

ID:415128 · 發(fā)表于 2018-11-18 13:53

本帖最后由 zhou__mi 于 2020-6-22 19:21 編輯

程序代碼：
//Pass at AS-07 V2.0,ZhouYinxiang,1881003@qq.com,20171009,9:55
//Pass at PROTEUS 8.7,ZhouYinxiang,1881003@qq.com,20181118,11:31
//實驗內(nèi)容和現(xiàn)象：
//（1）配置時鐘RCC；
//（2）配置中斷NVIC；
//（3）設置全部GPIO為Analog Input mode，降低功耗和提高EMI/EMC；
//（4）使能GPIOA的時鐘，設置PA5為GPIO_Mode_Out_PP 50MHz;使能GPIOC的時鐘，設置PC6和PC7為GPIO_Mode_Out_PP 50MHz；
//（5）LCD顯示實驗信息，沒有學習LCD之前，請忽略；
//（5）流水燈程序：PC6驅(qū)動LED1、PC7驅(qū)動LED2、PA5驅(qū)動LED3依次點亮、延時、熄滅，形成亮流水效果。
// 說明：程序源于STM3210E-EVAL，請看本project的readme.txt
/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name       : main.c
* Author          : MCD Application Team
* Version          : V2.0.1
* Date             : 06/13/2008
* Description       : Main program body.
********************************************************************************
* 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.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef GPIO_InitStructure;
ErrorStatus HSEStartUpStatus;

/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void NVIC_Configuration(void);
void Delay(vu32 nCount);

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

/*******************************************************************************
* Function Name  : main
* Description : Main program.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
  debug();
#endif
//（1）配置時鐘RCC；
  /* System Clocks Configuration **********************************************/
  RCC_Configuration();

//（2）配置中斷NVIC；
  /* NVIC Configuration *******************************************************/
  NVIC_Configuration();

////（3）設置全部GPIO為Analog Input mode，降低功耗和提高EMI/EMC；
//  /* Configure all unused GPIO port pins in Analog Input mode (floating input
//    trigger OFF), this will reduce the power consumption and increase the device
//    immunity against EMI/EMC *************************************************/
//  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
//                      RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD |
//                      RCC_APB2Periph_GPIOE, ENABLE); //使能所有的端口時鐘
//
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; //選擇設置所有的端口位
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;       //模擬輸入模式
//  GPIO_Init(GPIOA, &GPIO_InitStructure); //初始化端口GPIOA
//  GPIO_Init(GPIOB, &GPIO_InitStructure); //初始化端口GPIOB
//  GPIO_Init(GPIOC, &GPIO_InitStructure); //初始化端口GPIOC
//  GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化端口GPIOD
//  GPIO_Init(GPIOE, &GPIO_InitStructure); //初始化端口GPIOE
//
//  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
//                      RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD |
//                      RCC_APB2Periph_GPIOE, DISABLE);  //失能(關(guān)閉)所有的端口時鐘

//（4）使能GPIOA的時鐘，設置PA5為GPIO_Mode_Out_PP 50MHz;使能GPIOC的時鐘，設置PC6和PC7為GPIO_Mode_Out_PP 50MHz；
  /* Configure IO connected to LED1, LED2, LED3  leds *********************/
  /* Enable GPIOC clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);       //使能GPIOA的時鐘

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);       //使能GPIOC的時鐘

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC, &GPIO_InitStructure); //初始化PC6和PC7為50MHz推拉輸出

//（5）流水燈程序：PC6驅(qū)動LED1、PC7驅(qū)動LED2、PA5驅(qū)動LED3依次點亮、延時、熄滅，形成亮流水效果。
  while (1)
  {
/* Turn on LED1 */
GPIO_SetBits(GPIOC, GPIO_Pin_6); //PC6輸出高電平1，驅(qū)動LED1點亮
/* Insert delay */
Delay(0xAFFFF);       //延時一會兒（0.05038140-0.00031892 = 0.05006248s = 50ms）
/* Turn off LED1 */
GPIO_ResetBits(GPIOC, GPIO_Pin_6); //PC6輸出低電平0，驅(qū)動LED1熄滅
/* Insert delay */
Delay(0xAFFFF);       //延時一會兒（0.10044386-0.05038154 = 0.05006263s = 50ms）

/* Turn on LED2 */
GPIO_SetBits(GPIOC, GPIO_Pin_7); //PC7輸出高電平1，驅(qū)動LED2點亮
            /* Insert delay */
            Delay(0xAFFFF);       //延時一會
            /* Turn off LED2*/
GPIO_ResetBits(GPIOC, GPIO_Pin_7); //PC7輸出低電平0，驅(qū)動LED2熄滅
            /* Insert delay */
Delay(0xAFFFF);       //延時一會

/* Turn on LED3 */
GPIO_SetBits(GPIOA, GPIO_Pin_5); //PA5輸出高電平1，驅(qū)動LED3點亮
/* Insert delay */
Delay(0xAFFFF);       //延時一會
/* Turn off LED3 */
GPIO_ResetBits(GPIOA, GPIO_Pin_5); //PA5輸出低電平0，驅(qū)動LED3熄滅
      /* Insert delay */
Delay(0xAFFFF);       //延時一會
  }
}

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