- #include "stc15f2k60s2.h"
- #include <intrins.h> // 包含頭文件
- #define uint unsigned int
- #define uchar unsigned char
- #define ulong unsigned long //宏定義
- #define high 1
- #define low 0
- sbit SCL=P1^0; //串行時鐘
- sbit SDA=P1^1; //串行數據
- sbit Xintiao =P1^5; //脈搏檢測輸入端定義
- sbit speaker =P0^1; //蜂鳴器引腳定義
- void OLED_WrDat(unsigned char IIC_Data); /********Oled數據寫入***********/
- void OLED_WrCmd(unsigned char IIC_Command); /********Oled命令寫入***********/
- void OLED_P8x16Str(unsigned char x, y,unsigned char ch[]); /*******************功能描述:顯示8*16一組標準ASCII字符串 顯示的坐標(x,y),y為頁范圍0~7****************/
- void OLED_Init(void);//Oled初始化函數
- void OLED_Set_Pos(unsigned char x, unsigned char y) ;/*********************OLED 設置坐標************************************/
- void Tim_Init(); //定時器
- void OLED_CLS(void);/*********************OLED復位************************************/
- void Uart_Init(void)//串口初始化程序;115200bps;晶振11.0592MHz;串口方式1
- {
- SCON = 0x50;//設置為八位可變波特率
- AUXR = 0x40;//定時器1設置為1T模式
- TMOD = 0x20;//定時器1為模式2(八位自動重載)
- TL1 = 0xFD;//設置波特率重裝值
- TH1 = 0xFD;
- TR1 = 1;//開啟定時器1
- ES = 1;//打開串口中斷
- EA = 1;//打開總中斷
- }
- void Send_Byte(unsigned char dat)//發送一個字節數據的函數
- {
- SBUF = dat;//將dat的值傳給SBUF寄存器,然后寄存器發送數據到串口上
- while (TI == 0);//等待數據發送完畢(數據發送完畢后,TI會自己置1)
- TI=0;//手動清零
- }
- void Send_String(char *buf)//定義一個發送字符串的函數
- {
- while(*buf != '\0')//檢測這個字符串是否到結尾
- {
- Send_Byte(*buf++);//發送字符串中的每一位
- }
- }
- void delayus(uchar n) //定義延時為us級的延時函數
- {
- while(n--);
- }
- void delay_ms(uint z)//定義延時為ms級的延時函數
- {
- uint x,y;
- for(x=z;x>0;x--)
- for(y=614;y>0;y--);
- }
- void delay5ms(void) //5ms延時函數
- {
- unsigned char a,b;
- for(b=185;b>0;b--)
- for(a=12;a>0;a--);
- }
- void Delay1000ms()//定義延時為1s的延時函數
- {
- unsigned char i, j, k;
- _nop_();
- _nop_();
- i = 43;
- j = 6;
- k = 203;
- do
- {
- do
- {
- while (--k);
- } while (--j);
- } while (--i);
- }
- uchar Xintiao_Change=0; //心跳改變
- uint Xintiao_Jishu; //心跳計數
- uchar stop;
- uchar View_Data[3];
- uchar View_L[3];
- uchar View_H[3];
- uchar Xintiao_H=100; //脈搏上限
- uchar Xintiao_L=60; //脈搏下限
-
- uchar View_Con; //設置的位(0正常工作,1設置上限,2設置下限)
- uchar View_Change;
- /**********************************************
- //IIC Start
- **********************************************/
- void IIC_Start()
- {
- SCL = high;
- SDA = high;
- SDA = low;
- SCL = low;
- }
- /**********************************************
- //IIC Stop
- **********************************************/
- void IIC_Stop()
- {
- SCL = low;
- SDA = low;
- SCL = high;
- SDA = high;
- }
- /**********************************************
- // 通過I2C總線寫一個字節
- **********************************************/
- void Write_IIC_Byte(unsigned char IIC_Byte)
- {
- unsigned char i;
- for(i=0;i<8;i++)
- {
- if(IIC_Byte & 0x80)
- SDA=high;
- else
- SDA=low;
- SCL=high;
- SCL=low;
- IIC_Byte<<=1;
- }
- SDA=1;
- SCL=1;
- SCL=0;
- }
- void main() //主函數
- {
- OLED_Init(); //液晶初始化函數
- Tim_Init(); //定時器
- OLED_P8x16Str(0x80,16,"Heart Rate: "); //初始化顯示
- TR0=1;
- TR1=1; //打開定時器
- while(1)
- {
- if(View_Change)//開始顯示變量
- {
- View_Change=0;//變量清零
- if(stop==0) //心率正常時
- {
- if(View_Data[0]==0x30) //最高位為0時不顯示
- View_Data[0]=' ';
- }
- else //心率不正常(計數超過5000,也就是兩次信號時間超過5s)不顯示數據
- {
- View_Data[0]=' ';
- View_Data[1]=' ';
- View_Data[2]=' ';
- }
- switch(View_Con)
- {
- case 0: //正常顯示
- {
- OLED_P8x16Str(0x80,16,"Heart Rate: ");//顯示一行數據
- OLED_P8x16Str(0xc0,16," ");//顯示第二行數據
- OLED_P8x16Str(0xcd,3,View_Data); //第二行顯示心率
- break;
- }
- case 1: //設置下限時顯示
- {
- OLED_P8x16Str(0x80,16,"Heart Rate: ");//第一行顯示心率
- OLED_P8x16Str(0x8d,3,View_Data);
-
- View_L[0]=Xintiao_L/100+0x30; //將下限數據拆字
- View_L[1]=Xintiao_L%100/10+0x30;
- View_L[2]=Xintiao_L%10+0x30;
- if(View_L[0]==0x30) //最高位為0時,不顯示
- View_L[0]=' ';
-
- OLED_P8x16Str(0xC0,16,"Warning L : ");//第二行顯示下限數據
- OLED_P8x16Str(0xCd,3,View_L);
- break;
- }
- case 2: //設置上限時顯示(同上)
- {
- OLED_P8x16Str(0x80,16,"Heart Rate: ");
- OLED_P8x16Str(0x8d,3,View_Data);
-
- View_H[0]=Xintiao_H/100+0x30;
- View_H[1]=Xintiao_H%100/10+0x30;
- View_H[2]=Xintiao_H%10+0x30;
- if(View_H[0]==0x30)
- View_H[0]=' ';
-
- OLED_P8x16Str(0xC0,16,"Warning H : ");
- OLED_P8x16Str(0xCd,3,View_H);
- break;
- }
- }
- }
- }
- }
- switch(Xintiao_Con)
- {
- case 0: //默認Xintiao_Con是為0的
- {
- if(!Xintiao)//每10ms(上面的定時器)檢測一次脈搏是否有信號
- {
- Xintiao_Con++;//如果有信號,變量加一,程序就會往下走了
- }
- break;
- }
- case 1:
- {
- if(!Xintiao) //每過10ms檢測一下信號是否還存在
- {
- Xintiao_Con++;//存在就加一
- }
- else
- {
- Xintiao_Con=0;//如果不存在了,檢測時間很短,說明檢測到的不是脈搏信號,可能是其他干擾,將變量清零,跳出此次檢測
- }
- break;
- }
- case 2:
- {
- if(!Xintiao)
- {
- Xintiao_Con++;//存在就加一
- }
- else
- {
- Xintiao_Con=0;//如果不存在了,檢測時間很短,說明檢測到的不是脈搏信號,可能是其他干擾,將變量清零,跳出此次檢測
- }
- break;
- }
- case 3:
- {
- if(!Xintiao)
- {
- Xintiao_Con++;//存在就加一
- }
- else
- {
- Xintiao_Con=0;//如果不存在了,檢測時間很短,說明檢測到的不是脈搏信號,可能是其他干擾,將變量清零,跳出此次檢測
- }
- break;
- }
- case 4:
- {
- if(Xintiao)//超過30ms一直有信號,判定此次是脈搏信號,執行以下程序
- {
- if(Xintiao_Change==1)//心率計原理為檢測兩次脈沖間隔時間計算心率,變量Xintiao_Change第一次脈沖時為0的,所有走下面的else,第二次走這里
- {
- View_Data[0]=(60000/Xintiao_Jishu)/100+0x30;
- View_Data[1]=(60000/Xintiao_Jishu)%100/10+0x30;
- View_Data[2]=(60000/Xintiao_Jishu)%10+0x30;
- if(((60000/Xintiao_Jishu)>=Xintiao_H)||((60000/Xintiao_Jishu)<=Xintiao_L))//心率不在范圍內報警
- speaker=1; //蜂鳴器響
- else
- speaker=0; //不響
- View_Change=1; //計算出心率后啟動顯示
- Xintiao_Jishu=0; //心跳計數清零
- Xintiao_Change=0; //計算出心率后該變量清零,準備下次檢測心率
- stop=0; //計算出心率后stop清零
- }
- else//第一次脈沖時Xintiao_Change為0
- {
- Xintiao_Jishu=0; //脈沖計時變量清零,開始計時
- Xintiao_Change=1;//Xintiao_Change置1,準備第二次檢測到脈沖時計算心率
- }
- Xintiao_Con=0; //清零,準備檢測下一次脈沖
- break;
- }
- }
- }
- }
- /**定時器T0工作函數**/
- void Time0() interrupt 1
- {
- TH0=0xfc; //1ms
- TL0=0x18; //重新賦初值
- Xintiao_Jishu++; //心跳計數加
- if(Xintiao_Jishu==5000)//心跳計數大于5000
- {
- Xintiao_Jishu=0; //數據清零
- View_Change=1; //顯示位置1
- Xintiao_Change=0; //置零,準備再次檢測
- stop=1; //心跳計數超過5000后說明心率不正;蛘邲]有測出,stop置1
- speaker=0; //關閉蜂鳴器
- }
- }
- /**定時器初始化函數**/
- void Tim_Init()
- {
- EA=1; //打開中斷總開關
- ET0=1; //打開T0中斷允許開關
- ET1=1; //打開T1中斷允許開關
- TMOD=0x11; //設定定時器狀態
- TH0=0xfc; //1ms
- TL0=0x18; //賦初值
- TH1=0xd8; //10ms
- TL1=0xf0; //賦初值
- }
- /**在指定地址顯示指定數量的指定字符**/
- void OLED_P8x16Str(unsigned char x, y,unsigned char ch[])
- {
- unsigned char c=0,i=0,j=0;
- while (ch[j]!='\0')
- {
- c =ch[j]-32;
- if(x>120){x=0;y++;}
- OLED_Set_Pos(x,y);
- for(i=0;i<8;i++)
- OLED_WrDat(F8X16[c*16+i]);
- OLED_Set_Pos(x,y+1);
- for(i=0;i<8;i++)
- OLED_WrDat(F8X16[c*16+i+8]);
- x+=8;
- j++;
- }
- }
- /*********************OLED寫數據************************************/
- void OLED_WrDat(unsigned char IIC_Data)
- {
- IIC_Start();
- Write_IIC_Byte(0x78);
- Write_IIC_Byte(0x40); //write data
- Write_IIC_Byte(IIC_Data);
- IIC_Stop();
- }
- /*********************OLED寫命令************************************/
- void OLED_WrCmd(unsigned char IIC_Command)
- {
- IIC_Start();
- Write_IIC_Byte(0x78); //Slave address,SA0=0
- Write_IIC_Byte(0x00); //write command
- Write_IIC_Byte(IIC_Command);
- IIC_Stop();
- }
- /*********************OLED初始化************************************/
- void OLED_Init(void)
- {
- delay(500);//初始化之前的延時很重要!
- OLED_WrCmd(0xae);//--turn off oled panel
- OLED_WrCmd(0x00);//---set low column address
- OLED_WrCmd(0x10);//---set high column address
- OLED_WrCmd(0x40);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
- OLED_WrCmd(0x81);//--set contrast control register
- OLED_WrCmd(Brightness); // Set SEG Output Current Brightness
- OLED_WrCmd(0xa1);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
- OLED_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
- OLED_WrCmd(0xa6);//--set normal display
- OLED_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
- OLED_WrCmd(0x3f);//--1/64 duty
- OLED_WrCmd(0xd3);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
- OLED_WrCmd(0x00);//-not offset
- OLED_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
- OLED_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
- OLED_WrCmd(0xd9);//--set pre-charge period
- OLED_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
- OLED_WrCmd(0xda);//--set com pins hardware configuration
- OLED_WrCmd(0x12);
- OLED_WrCmd(0xdb);//--set vcomh
- OLED_WrCmd(0x40);//Set VCOM Deselect Level
- OLED_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
- OLED_WrCmd(0x02);//
- OLED_WrCmd(0x8d);//--set Charge Pump enable/disable
- OLED_WrCmd(0x14);//--set(0x10) disable
- OLED_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
- OLED_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
- OLED_WrCmd(0xaf);//--turn on oled panel
- OLED_Set_Pos(0,0);
- }
- /*********************OLED 設置坐標************************************/
- void OLED_Set_Pos(unsigned char x, unsigned char y)
- {
- OLED_WrCmd(0xb0+y);
- OLED_WrCmd(((x&0xf0)>>4)|0x10);
- OLED_WrCmd((x&0x0f)|0x01);
- }
- /*********************OLED復位************************************/
- void OLED_CLS(void)
- {
- unsigned char y,x;
- for(y=0;y<8;y++)
- {
- OLED_WrCmd(0xb0+y);
- OLED_WrCmd(0x01);
- OLED_WrCmd(0x10);
- for(x=0;x<X_WIDTH;x++)
- OLED_WrDat(0);
- }
- }
復制代碼
|