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#include "Headfile.h"
void Beep_Init()//蜂鸣器初始化
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_Out_PP ;
GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
}
void Key_Init()//按键初始化
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_2 | GPIO_Pin_3 |GPIO_Pin_4 |GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IPU ;
GPIO_InitStructure.GPIO_Speed= GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
}
#define MODE GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_2)//模式切换按键
#define CANCEL GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_3)//处理警报按键
#define ADD GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4) //加按键
#define SUB GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5) //减按键
int Temperature_High=100,Temperature_Low=0;
uint8_t flag=0;
uint8_t High_Set=1,Cancel=0;
void KeyScan()
{
if(MODE==0) //如果检测到低电平,说明按键按下
{
delay_ms(5); //延时去抖,一般5-20ms
if(MODE==0) //再次确认按键是否按下,没有按下则退出
{
while(MODE==0);//如果确认按下按键等待按键释放,没有释放则一直等待
if(High_Set==1) High_Set=0;
else High_Set=1;
LCD_clear();
}
}
if(CANCEL==0) //如果检测到低电平,说明按键按下
{
delay_ms(5); //延时去抖,一般5-20ms
if(CANCEL==0) //再次确认按键是否按下,没有按下则退出
{
while(CANCEL==0);//如果确认按下按键等待按键释放,没有释放则一直等待
if(flag==1) flag=0;
else flag=1;
LCD_clear();
}
}
if(ADD==0) //如果检测到低电平,说明按键按下
{
delay_ms(5); //延时去抖,一般5-20ms
if(ADD==0) //再次确认按键是否按下,没有按下则退出
{
while(ADD==0);//如果确认按下按键等待按键释放,没有释放则一直等待
if(High_Set==1) Temperature_High+=1;
else Temperature_Low+=1;
LCD_clear();
}
}
if(SUB==0) //如果检测到低电平,说明按键按下
{
delay_ms(5); //延时去抖,一般5·20ms
if(SUB==0) //再次确认按键是否按下,没有按下则退出
{
while(SUB==0);//如果确认按下按键等待按键释放,没有释放则一直等待
if(High_Set==1) Temperature_High-=1;
else Temperature_Low-=1;
LCD_clear();
}
}
}
int temper=0;
uint8_t Danger_Flag=0;
void State_Check()
{
if((temper>Temperature_High)||(temper<Temperature_Low)) Danger_Flag=1;
else Danger_Flag=0;
}
uint16_t Cnt=0;
int main()
{
SystemInit();//系统时钟配置
delay_init(72);//系统延时函数初始化
Usart_Init(115200);//串口初始化
Beep_Init();//蜂鸣器初始化
LCD_Init();//显示屏初始化
Key_Init();//按键初始化
ds18b20_start();//温度传感器初始化
delay_ms(200);
while(1)
{
temper=ds18b20_read(); //温度采集
KeyScan();//按键扫描
State_Check();//报警检测
LCD_write_english_string(0,0,"NowTemp:"); write_number(50,0,temper);LCD_write_english_string(70,0,"%C");//当前温度
if(High_Set==1) LCD_write_english_string(20,1,"Set_High");//模式显示
else LCD_write_english_string(20,1,"Set_Low");
LCD_write_english_string(0,2,"High"); LCD_write_english_string(40,2,"Low"); //温度上、下限
write_number(0,3,Temperature_High); write_number(50,3,Temperature_Low);
if(flag==1) LCD_write_english_string(25,4,"Sorting"); //状态显示
else
{
if(Danger_Flag==1) LCD_write_english_string(25,4,"Danger~~~~");
else LCD_write_english_string(25,4,"OKay!!!");
}
Cnt++;
if(Cnt>=100)
{
Cnt=0;
}
if(Cnt>=50)
{
if(Danger_Flag==1&&flag==0) PCout(13)=1;//产生警报
}
else
{
PCout(13)=0;
}
}
}
#include "Headfile.h"
#include "DS18B20.h"
#define EnableINT()
#define DisableINT()
#define DS_PORT GPIOA
#define DS_DQIO GPIO_Pin_1
#define DS_RCC_PORT RCC_APB2Periph_GPIOA
#define DS_PRECISION 0x7f //精度配置寄存器 1f=9位; 3f=10位; 5f=11位; 7f=12位;
#define DS_AlarmTH 0x64
#define DS_AlarmTL 0x8a
#define DS_CONVERT_TICK 1000
#define ResetDQ() GPIO_ResetBits(DS_PORT,DS_DQIO)
#define SetDQ() GPIO_SetBits(DS_PORT,DS_DQIO)
#define GetDQ() GPIO_ReadInputDataBit(DS_PORT,DS_DQIO)
//static unsigned char TempX_TAB[16]={0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x06,0x07,0x08,0x08,0x09,0x09};
void Delay_us(u32 Nus)
{
SysTick->LOAD=Nus*9; //时间加载
SysTick->CTRL|=0x01; //开始倒数
while(!(SysTick->CTRL&(1<<16))); //等待时间到达
SysTick->CTRL=0X00000000; //关闭计数器
SysTick->VAL=0X00000000; //清空计数器
}
unsigned char ResetDS18B20(void)
{
unsigned char resport=0;
SetDQ();
Delay_us(50);
ResetDQ();
Delay_us(500); //500us (该时间的时间范围可以从480到960微秒)
SetDQ();
Delay_us(40); //40us
//resport = GetDQ();
while(GetDQ());
Delay_us(500); //500us
SetDQ();
return resport;
}
void DS18B20WriteByte(unsigned char Dat)
{
unsigned char i;
for(i=8;i>0;i--)
{
ResetDQ(); //在15u内送数到数据线上,DS18B20在15-60u读数
Delay_us(5); //5us
if(Dat & 0x01)
SetDQ();
else
ResetDQ();
Delay_us(65); //65us
SetDQ();
Delay_us(2); //连续两位间应大于1us
Dat >>= 1;
}
}
unsigned char DS18B20ReadByte(void)
{
unsigned char i=0,Dat=0;
SetDQ();
Delay_us(5);
for(i=8;i>0;i--)
{
Dat >>= 1;
ResetDQ(); //从读时序开始到采样信号线必须在15u内,且采样尽量安排在15u的最后
Delay_us(5); //5us
SetDQ();
Delay_us(5); //5us
if(GetDQ())
Dat|=0x80;
else
Dat&=0x7f;
Delay_us(65); //65us
SetDQ();
}
return Dat;
}
void ReadRom(unsigned char *Read_Addr)
{
unsigned char i;
DS18B20WriteByte(ReadROM);
for(i=8;i>0;i--)
{
*Read_Addr=DS18B20ReadByte();
Read_Addr++;
}
}
void DS18B20Init(unsigned char Precision,unsigned char AlarmTH,unsigned char AlarmTL)
{
DisableINT();
ResetDS18B20();
DS18B20WriteByte(SkipROM);
DS18B20WriteByte(WriteScratchpad);
DS18B20WriteByte(AlarmTL);
DS18B20WriteByte(AlarmTH);
DS18B20WriteByte(Precision);
ResetDS18B20();
DS18B20WriteByte(SkipROM);
DS18B20WriteByte(CopyScratchpad);
EnableINT();
while(!GetDQ()); //等待复制完成 ///////////
}
void DS18B20StartConvert(void)
{
DisableINT();
ResetDS18B20();
DS18B20WriteByte(SkipROM);
DS18B20WriteByte(StartConvert);
EnableINT();
}
void DS18B20_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(DS_RCC_PORT, ENABLE);
GPIO_InitStructure.GPIO_Pin = DS_DQIO;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; //开漏输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //2M时钟速度
GPIO_Init(DS_PORT, &GPIO_InitStructure);
}
void ds18b20_start(void)
{
DS18B20_Configuration();
DS18B20Init(DS_PRECISION, DS_AlarmTH, DS_AlarmTL);
DS18B20StartConvert();
}
float ds18b20_read(void)
{
unsigned char TemperatureL,TemperatureH;
float Temperature;
uint8_t fg=1;
DisableINT();
ResetDS18B20();
DS18B20WriteByte(SkipROM);
DS18B20WriteByte(ReadScratchpad);
TemperatureL=DS18B20ReadByte();
TemperatureH=DS18B20ReadByte();
ResetDS18B20();
EnableINT();
{
TemperatureL=~TemperatureL; //补码转换,取反加一
TemperatureH=~TemperatureH+1;
fg=0; //读取温度为负时fg=0
}
Temperature = TemperatureL/16+TemperatureH*16; //整数部分
DS18B20StartConvert();
if(fg==0) Temperature*=-1;
return Temperature;
}