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標題: stm32f103單片機使用DS1307源程序測試成功 [打印本頁]

作者: wxs732 時間: 2023-3-31 19:14
標題: stm32f103單片機使用DS1307源程序測試成功
看到很多小伙伴在測試這款模塊
就測試了一下
我用的stm32 f103系列單片機
模塊就是套包買的

#include "ds1307.h"
#include "sys.h"

#define uchar unsigned char

int year;
u8 month,day,hour,minutes,seconds;

//產生IIC 起始信號
void IIC_Start()
{
      SDA_OUT();
      IIC_SDA =1;
      IIC_SCL = 1;
      delay_us(4);
      IIC_SDA = 0;
      delay_us(4);
      IIC_SCL = 0;

}

//產生IIC 停止信號
void IIC_Stop()
{
      SDA_OUT();
      IIC_SCL = 0;
      IIC_SDA = 0;
      delay_us(4);
      IIC_SCL = 1;
      delay_us(4);
      IIC_SDA = 1;

}

//等待應答信號
//1 接收失敗 0 接收成功
u8 IIC_Wait_Ack()
{
      u8 ucErrTime = 0;
      SDA_IN();
      IIC_SDA = 1;
      delay_us(1);
      IIC_SCL = 1;
      delay_us(1);
      while(READ_SDA)
      {
            ucErrTime ++;
            if(ucErrTime>250)
            {
                     IIC_Stop();
                     return 1;
            }
      }
      IIC_SCL = 0;
      return 0;
}

void IIC_Ack()
{
      IIC_SCL = 0;
      SDA_OUT();
      IIC_SDA = 0;
      delay_us(2);
      IIC_SCL =1;
      delay_us(2);
      IIC_SCL = 0;
}

void IIC_NAck()
{
      IIC_SCL = 0;
      SDA_OUT();
      IIC_SDA =1;
      delay_us(2);
      IIC_SCL =1;
      delay_us(2);
      IIC_SCL = 0;
}

u8 IIC_Send_Byte(u8 txd)
{
      u8 t;
      SDA_OUT();
      IIC_SCL = 0;  //時鐘信號拉低開始數據傳輸

      for(t=0;t<8;t++)
      {
            IIC_SDA = (txd&0x80)>>7;
            txd<<=1; delay_us(2);
            IIC_SCL = 1;delay_us(2);
            IIC_SCL = 0;delay_us(2);
      }


}

u8 IIC_Read_Byte(unsigned char ack)
{
      u8 i,receive = 0;
      SDA_IN();
      for(i=0;i<8;i++)
      {
            IIC_SCL = 0;
            delay_us(2);
            IIC_SCL = 1;
            receive<<=1;
            if(READ_SDA)
                     receive++;
            delay_us(1);
      }
  if(!ack)
               IIC_NAck();
      else
               IIC_Ack();

      return receive;
}

unsigned char  DS1307_WriteOneByte(u8 addr,u8 data)
{
      u8 temp;
      //temp = (data/10*16)+(data%10);
      temp = data/10;
      temp<<=4;
      temp = data%10+temp;

      IIC_Start();

      IIC_Send_Byte(0xd0);
  IIC_Wait_Ack();
      IIC_Send_Byte(addr);
  IIC_Wait_Ack();
      IIC_Send_Byte(temp);
  IIC_Stop();
      return 0;
}

u8 DS1307_ReadOneByte(u8 addr)
{
      u8 temp,dat;
  IIC_Start();  //IIC 硬件線路準備
      IIC_Send_Byte(0xd0);  //發送設備地址寫命令
      IIC_Wait_Ack(); //問答
      IIC_Send_Byte(addr); //發送期間地址
      IIC_Wait_Ack();

      IIC_Stop();
      IIC_Start();

      IIC_Send_Byte(0xd1);
      IIC_Wait_Ack();

      dat = IIC_Read_Byte(addr);
      IIC_NAck();
      IIC_Stop();

      //temp = dat/16;
      //dat = dat%16;
      //dat = dat+temp*10;
      dat = (dat/16)*10+dat%16;
      return (dat);

}

void shizhong_WriteOneByte(u8 addr,u8 data)
{
      u8 temp;
      temp = (data/10*16)+(data%10);
      IIC_Start();
      IIC_Send_Byte(0XD0);
      IIC_Wait_Ack();

      IIC_Send_Byte(addr);
  IIC_Wait_Ack();

      IIC_Send_Byte(temp);

      IIC_Stop();
      delay_ms(10);
}
u8 shizhong_ReadOneByte(u8 addr)
{
      u8 temp,dat;
  IIC_Start();
      IIC_Send_Byte(0xd0);

      IIC_Wait_Ack();
      IIC_Start();
      IIC_Send_Byte(0xd1);
      IIC_Wait_Ack();

      //temp = IIC_Read_Byte(addr);
      temp = IIC_Read_Byte(0);
      IIC_NAck();
      IIC_Stop();

      dat = (temp/16*10)+(temp%16);
      return dat;

}

void DS1307_NOW_TIME()
{
      seconds = DS1307_ReadOneByte(0x00);
      minutes = DS1307_ReadOneByte(0x01);
      hour = DS1307_ReadOneByte(0x02);

      day    = DS1307_ReadOneByte(0x04);
      month = DS1307_ReadOneByte(0x05);
      year = DS1307_ReadOneByte(0x06);


printf("%d:%d:%d %d-%d-%d\r\n",year, month, day, hour, minutes, seconds);
}

void DS1307_Read()
{


  seconds = DS1307_ReadOneByte(0X00);  //秒
      minutes = DS1307_ReadOneByte(0X01);  //分
      hour = DS1307_ReadOneByte(0X02);    //時

      day =    DS1307_ReadOneByte(0X04);    //日期
      month = DS1307_ReadOneByte(0X05);    //月
      year = DS1307_ReadOneByte(0X06)+2000; //年


      printf("%d:%d:%d %d-%d-%d\r\n",year, month, day, hour, minutes, seconds);


}

void DS1307_GPIO_Init()
{
      GPIO_InitTypeDef GPIO_InitStructure;
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;  //PB1 PB2
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

      GPIO_Init(GPIOB,&GPIO_InitStructure);
      GPIO_SetBits(GPIOB,GPIO_Pin_1|GPIO_Pin_2);


      //DS1307_WriteOneByte(u8 addr,u8 data)

//       DS1307_WriteOneByte(0x00,0x1e); //
//  DS1307_WriteOneByte(0x01,0x1f);
//       DS1307_WriteOneByte(0x02,0x12);
//       //DS1307_WriteOneByte(0x03,0x00);
//       DS1307_WriteOneByte(0x04,0x1f);
//       DS1307_WriteOneByte(0x05,0x03);
//       DS1307_WriteOneByte(0x06,0x17);

      shizhong_WriteOneByte(0x00,0x00);
      shizhong_WriteOneByte(0x00,0x1e); //
  shizhong_WriteOneByte(0x01,0x38);
      shizhong_WriteOneByte(0x02,0x12);

      shizhong_WriteOneByte(0x04,0x1f);
      shizhong_WriteOneByte(0x05,0x03);
      shizhong_WriteOneByte(0x06,0x17);
}

這是 C 文件，下面是 H 文件

#ifndef __DS1307_H
#define __DS1307_H

#include "sys.h"
#include "delay.h"
#include "usart.h"

//#define SDA(x) x?GPIO_ResetBits(GPIOB,GPIO_Pin_1): GPIO_SetBits(GPIOB,GPIO_Pin_1)  //根據x，來讓管腳B-8，輸出0或者1
//#define SCL(x) x?GPIO_ResetBits(GPIOB,GPIO_Pin_2): GPIO_SetBits(GPIOB,GPIO_Pin_2)  //根據x，來讓管腳B-5，輸出0或者1

//#define SDA_IN() {GPIOB->CRL &=0xffffff0f;GPIOB->CRL |=8<<4;}
//#define SDA_OUT() {GPIOB->CRL &=0xffffff0f;GPIOB->CRL |=3<<4;}

#define IIC_SCL    PBout(2)
#define IIC_SDA    PBout(1)
#define READ_SDA PBin(1)

//SDA PB1
//SCL PB2

void DS1307_GPIO_Init();
void DS1307_Read();

#define  IIC_SDA_PORT GPIOB
#define  IIC_SDA_IO GPIO_Pin_1
#define  IIC_SDA_RCC  RCC_APB2Periph_GPIOB

#define  SDA_IN() {GPIOB->CRL &=0xffffff0f;GPIOB->CRL |=0x00000080;}
#define  SDA_OUT() {GPIOB->CRL &=0xffffff0f;GPIOB->CRL |=0x00000030;}

extern int year;
extern u8 month,day,hour,minutes,seconds;

#endif

作者: isyido 時間: 2024-1-7 10:54
嚴謹的人！很負責任的Wait_Ack。

歡迎光臨 (http://m.zg4o1577.cn/bbs/)