LetAllLinesOfCodeSpeak

最新推荐文章于 2021-07-07 23:39:44 发布

jiangyiweijyw

最新推荐文章于 2021-07-07 23:39:44 发布

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分类专栏： LetAllLinesOfCodeSpeak 文章标签： LetAllLinesOfCodeSpeak

本文链接：https://blog.youkuaiyun.com/jiangxiaoweijxw/article/details/89042450

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本文介绍了一种使用DS18B20温度传感器进行编程的方法，包括初始化、读写操作等关键步骤，并提供了一个基于CC2530的串口通信实例。

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/****************************************************************************************************************

*************************

*Author:JYW

*Time:2019_04_05

*Describe:LetAllLinesOfCodeSpeak

*****************************************************/

/****************************************
*Describe:Ds18b20代码练习
****************************/

#include"ds18b20.h"

#define Ds18b20IO P0_7

void Delay_us(unsigned int k)
{
   T1CC0L = 0x06;
   T1CC0H = 0x00;
   T1CTL = 0x02;
   while(k)
   {
       while(!(T1CNTL >= 0x04));
       k--;
   }
   T1CTL = 0x00;
}

void Delay_ms(unisgned int k)
{
   T1CC0L = 0xE8;
   T1CC0H = 0x03;
   T1CTL = 0x0A;
   while(k)
   {
       while(!((T1CNTL >= 0xE8)&&(T1CNTH >= 0x03)));
       k--;
   }
   T1CTL = 0x00;
}

void Delay_s(unsigned int k)
{
   while(k)
   {
       Delay_ms(1000);
       k--;
   }
}

//时钟频率为32M
void Ds18b20Delay(unsigned int k)
{
   unsigned int a,b;
   for(a=0; a<k;a++)
       for(b=0;b<2;b++);
}

void Ds18b20InputInitial(void)
{
P0DIR &= ~0x80;
}

void Ds18b20OutputInitial(void)
{
P0DIR |= 0x80;
}

unsigned char Ds18b20Initial(void)
{
   unsigned char Sta = 0x00;
   unsigned char Flag_1 = 0;
   unsigned int counnt = 0;
   Ds18b20OutputInitial();
   Ds18b20IO = 1;
   Ds18b20Delay(260);
   Ds18b20IO = 0;
   Ds18b20Delay(750);
   Ds18b20IO = 1;
   Ds18b20InputInitial();
   while((Ds18b20IO != 0)&&(Flag_1 == 0))
   {
       count++;
       if(count >8000) Flag_1 = 1;
       Sta = Ds18b20IO;
   }
   Ds18b20OutputInitial();
   Ds18b20IO = 1;
   Ds18b20Delay(100);
   return Sta;

}

void Ds18b20Write(unsigned char infor)
{
   unsigned char i;
   Ds18b20OutputInitial();
   for(i=0; i<8; i++)
   {
       if((infor & 0x01))
       {
       //   Ds18b20IO = 1;
           //Ds18b20Delay(5);
           Ds18b20IO = 0;
           Ds18b20Delay(5);
           Ds18b20IO = 1;
           Ds18b20Delay(50);
       }
       else
       {
           Ds18b20IO = 0;
           Ds18b20Delay(50);
           Ds18b20IO = 1;
           Ds18b20Delay(5);
       }
       infor >>= 1;
   }
}

unsigned char Ds18b20Read(void)
{
   unsigned char i= 0;
   unsigned char DataBuf = 0x00;
   Ds18b20OutputInitial();
   Ds18b20IO = 1;
   Ds18b20Delay(10);
   for(i=0; i<8; i++)
   {
       DataBuf >>= 1;
       Ds18b20OutputInitial();
       Ds18b20IO = 0;
       Ds18b20Delay(3);
       Ds18b20IO = 1;
       Ds18b20Delay(3);
       Ds18b20InputInitial();
       if(1 == Ds18b20IO) DataBuf |= 0x80;
       Ds18b20Delay(15);
   }
   return DataBuf;
}

/*板子与PC机收发练习自己写的*/

#include<ioCC2530.h>
unsigned char* DataBuf= "Hello Fly!";
unsigned char ReBuf[10];
unsigned char Flag = 1;

void ClockInit32M(void)
{
CLKCONCMD &= ~0x40;
while(CLKCONSTA & 0x40);
CLKCONCMD &= ~0x47;
}

void UartInit(void)
{
PERCFG &= 0x00;//0100 0000
P0SEL |= 0x0C;
P2SEL &= ~0x40;
P2DIR &= 0x3F;
U0CSR |=0xC0; //1100 0000Uart模式，允许接收

U0GCR |=11;
U0BAUD |= 216;
UTX0IF = 0;

EA = 1;
URX0IE = 1;
}

void PointInit()
{
P1DIR |=0x03;
P1_0 = 1;
P1_1 = 1;
}

void Delay(unsigned int count)
{
unsigned int a,b;
for(a=0; a<count; a++)
for(b=0; b<1070; b++);
}

void UartSendStr(unsigned char*str, unsigned char len)
{
unsigned char i;
for(i=0;i<len;i++)
{
U0DBUF = *(str++);
while(UTX0IF == 0);
UTX0IF = 0;

}
}

void main(void)
{
ClockInit32M();
UartInit();
PointInit();

while(1)
{
UartSendStr(DataBuf, sizeof("Hello Fly!"));
//UartSendStr(DataBuf, 10);
Delay(3000);
if(!Flag)
{
P1_0 = !P1_0;
P1_1 = !P1_1;
}
}

}

#pragma vector = URX0_VECTOR
__interrupt void Uart0_ISR()
{
URX0IF = 0;
*ReBuf = U0DBUF;
Flag = !Flag;

}

/*******************************************************
*Describe:03基础实验—10串口通讯收发字符练习
******************************/

void main()
{
   CLKCONCMD &= ~0x40;
   while(CLKCONSTA & 0x40);
   CLKCONCMD &= ~0x47;

   InitUart();
   UartState = UART0_RX;
   memset(RxData,0,SIZE);

   while(1)
   {
       if(UartState == UART0_RX)
       {
           if(RxBuf != 0)
           {
               if((RxBuf != '#')&&(count < 50))
                   RxData[count++]=RxBuf;
               else
               {
                   if(count >= 50)
                   {
                       count = 0;
                       memset(RxData,0,SIZE);

                   }
                   else
                       UartState = UART0_TX;


               }
               RxBuf = 0;

           }

       }

       if(UartState == UART0_TX)
       {
           U0CSR &= ~0x40;
           UartSendString(RxData,counnt);
           U0CSR |= 0x40;
           UartState = UART0_RX;
           count = 0;
           memset(RxData, 0, SIZE);

       }

   }

}