实验4-3 IOToggle ：流水灯 -

标题: 实验4-3 IOToggle ：流水灯 [打印本页]

作者: zhou__mi 时间: 2018-11-18 13:53
标题: 实验4-3 IOToggle ：流水灯
本帖最后由 zhou__mi 于 2020-6-22 19:21 编辑

程序代码：
//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
//实验内容和现象：
//（1）配置时钟RCC；
//（2）配置中断NVIC；
//（3）设置全部GPIO为Analog Input mode，降低功耗和提高EMI/EMC；
//（4）使能GPIOA的时钟，设置PA5为GPIO_Mode_Out_PP 50MHz;使能GPIOC的时钟，设置PC6和PC7为GPIO_Mode_Out_PP 50MHz；
//（5）LCD显示实验信息，没有学习LCD之前，请忽略；
//（5）流水灯程序：PC6驱动LED1、PC7驱动LED2、PA5驱动LED3依次点亮、延时、熄灭，形成亮流水效果。
// 说明：程序源于STM3210E-EVAL，请看本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）配置时钟RCC；
  /* System Clocks Configuration **********************************************/
  RCC_Configuration();

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

////（3）设置全部GPIO为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); //使能所有的端口时钟
//
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; //选择设置所有的端口位
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;       //模拟输入模式
//  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(关闭)所有的端口时钟

//（4）使能GPIOA的时钟，设置PA5为GPIO_Mode_Out_PP 50MHz;使能GPIOC的时钟，设置PC6和PC7为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的时钟

  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的时钟

  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为50MHz推拉输出

//（5）流水灯程序：PC6驱动LED1、PC7驱动LED2、PA5驱动LED3依次点亮、延时、熄灭，形成亮流水效果。
  while (1)
  {
/* Turn on LED1 */
GPIO_SetBits(GPIOC, GPIO_Pin_6); //PC6输出高电平1，驱动LED1点亮
/* Insert delay */
Delay(0xAFFFF);       //延时一会儿（0.05038140-0.00031892 = 0.05006248s = 50ms）
/* Turn off LED1 */
GPIO_ResetBits(GPIOC, GPIO_Pin_6); //PC6输出低电平0，驱动LED1熄灭
/* Insert delay */
Delay(0xAFFFF);       //延时一会儿（0.10044386-0.05038154 = 0.05006263s = 50ms）

/* Turn on LED2 */
GPIO_SetBits(GPIOC, GPIO_Pin_7); //PC7输出高电平1，驱动LED2点亮
            /* Insert delay */
            Delay(0xAFFFF);       //延时一会
            /* Turn off LED2*/
GPIO_ResetBits(GPIOC, GPIO_Pin_7); //PC7输出低电平0，驱动LED2熄灭
            /* Insert delay */
Delay(0xAFFFF);       //延时一会

/* Turn on LED3 */
GPIO_SetBits(GPIOA, GPIO_Pin_5); //PA5输出高电平1，驱动LED3点亮
/* Insert delay */
Delay(0xAFFFF);       //延时一会
/* Turn off LED3 */
GPIO_ResetBits(GPIOA, GPIO_Pin_5); //PA5输出低电平0，驱动LED3熄灭
      /* Insert delay */
Delay(0xAFFFF);       //延时一会
  }
}

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