手持OLED空气质量测试仪STC15W204S单片机源码+PCB

/*----------------------------------------------------------------------- 单片机型号为STC15W204S 内部IRC选择33MHZ 最后编写：2017-6-17 作者：骆 凯 -----------------------------------------------------------------------*/ #include "STC15Fxxxx.H" #include "oled.h" #define MAIN_Fosc 33177600L //定义主时钟 最高晶振 #define RX1_Lenth 32 //串口接收缓冲长度 #define BaudRate1 9600UL //选择波特率 #define Timer2_Reload (65536UL -(MAIN_Fosc / 4 / BaudRate1)) //Timer 2 重装值， 对应300KHZ sbit DQ=P5^4; /*DS18B20*/ sbit SW=P5^5; /*触摸按键*/ bit SW_R,table; unsigned char Buf_Switch,uart_buf[32],uart_buf_index,e; unsigned int check,Tmep_Tvalue,Tmep_Tvalue_CH,PM[3]; /*----------------------------------------------------------------------- DS18B20延时1微秒 -----------------------------------------------------------------------*/ void delay_us(unsigned int i)//精确延时1微秒 { unsigned int b,a; for(b=0;b<i;b++) { _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); a = 5; while (--a); } } /*----------------------------------------------------------------------- DS18B20复位 -----------------------------------------------------------------------*/ void ds1820rst() { unsigned char x=0; DQ = 1; //DQ复位 delay_us(4); //延时 DQ = 0; //DQ拉低 delay_us(100); //精确延时大于480us DQ = 1; //拉高 delay_us(40); } /*----------------------------------------------------------------------- 读数据 -----------------------------------------------------------------------*/ unsigned char ds1820rd() { unsigned char i=0; unsigned char dat = 0; for (i=8;i>0;i--) { DQ = 0; //给脉冲信号 dat>>=1; DQ = 1; //给脉冲信号 if(DQ) dat|=0x80; delay_us(10); } return(dat); } /*----------------------------------------------------------------------- 写数据 -----------------------------------------------------------------------*/ void ds1820wr(unsigned char wdata) { unsigned char i=0; for (i=8; i>0; i--) { DQ = 0; DQ = wdata&0x01; delay_us(10); DQ = 1; wdata>>=1; } } /*----------------------------------------------------------------------- 读取温度值并转换 -----------------------------------------------------------------------*/ void Read_Temp(void) { ds1820rst(); ds1820wr(0xcc); //*跳过读序列号*/ ds1820wr(0x44); //*启动温度转换*/ delay_us(300); ds1820rst(); //温度转换需要一点时间 ds1820wr(0xcc); //*跳过读序列号*/ ds1820wr(0xbe); //*读取温度*/ } /*----------------------------------------------------------------------- 温度值转换并在本机显示 -----------------------------------------------------------------------*/ void Display_Temp() { unsigned char a ,b; Read_Temp(); a=ds1820rd(); //先读的是温度值低位 b=ds1820rd(); //接着读的是温度值高位 Tmep_Tvalue=b; Tmep_Tvalue<<=8; Tmep_Tvalue=Tmep_Tvalue|a; Tmep_Tvalue=Tmep_Tvalue*(0.625);//温度值扩大10倍，精确到1位小数 if(Tmep_Tvalue!=Tmep_Tvalue_CH){//有新数据再刷新 if(Tmep_Tvalue/1000==0){OLED_ShowString(56,0,"?");}else{OLED_ShowChar(56,0,Tmep_Tvalue/1000);} if(Tmep_Tvalue%1000/100==0){OLED_ShowString(64,0,"?");}else{OLED_ShowChar(64,0,Tmep_Tvalue%1000/100);} OLED_ShowChar(72,0,Tmep_Tvalue%100/10); OLED_ShowString(80,0,";"); OLED_ShowChar(88,0,Tmep_Tvalue%10); } Tmep_Tvalue_CH=Tmep_Tvalue; } /*----------------------------------------------------------------------- PM值转换并在本机显示 -----------------------------------------------------------------------*/ void Display_PM() { unsigned char a; for(a=1;a<4;a++){ if((PM[a-1]/10000)==0){ if((PM[a-1]%10000/1000)==0){ if((PM[a-1]%1000/100)==0){ if((PM[a-1]%100/10)==0){ OLED_ShowString(56,a*2,"?"); OLED_ShowString(64,a*2,"?"); OLED_ShowString(72,a*2,"?"); OLED_ShowChar(80,a*2,PM[a-1]%10);} else{ OLED_ShowString(56,a*2,"?"); OLED_ShowString(64,a*2,"?"); OLED_ShowChar(72,a*2,PM[a-1]%100/10); OLED_ShowChar(80,a*2,PM[a-1]%10); }} else{ OLED_ShowString(56,a*2,"?"); OLED_ShowChar(64,a*2,PM[a-1]%1000/100); OLED_ShowChar(72,a*2,PM[a-1]%100/10); OLED_ShowChar(80,a*2,PM[a-1]%10);} }else{ OLED_ShowChar(56,a*2,PM[a-1]%10000/1000); OLED_ShowChar(64,a*2,PM[a-1]%1000/100); OLED_ShowChar(72,a*2,PM[a-1]%100/10); OLED_ShowChar(80,a*2,PM[a-1]%10);}} else{ OLED_ShowChar(38,a*2,PM[a-1]/10000); OLED_ShowChar(56,a*2,PM[a-1]%10000/1000); OLED_ShowChar(64,a*2,PM[a-1]%1000/100); OLED_ShowChar(72,a*2,PM[a-1]%100/10); OLED_ShowChar(80,a*2,PM[a-1]%10); } } } /*------------------------------------------------- UART_int -------------------------------------------------*/ void UART_int() { S1_8bit(); //8位数据 S1_USE_P30P31(); //UART1 使用P30 P31口 默认 AUXR &= ~(1<<4); //Timer stop 波特率使用Timer2产生 AUXR |= 0x01; //S1 BRT Use Timer2; AUXR |= (1<<2); //Timer2 set as 1T mode TH2 = (u8)(Timer2_Reload >> 8); TL2 = (u8)Timer2_Reload; AUXR |= (1<<4); //Timer run enable REN = 1; //允许接收 ES = 1; //允许中断 EA = 1; //允许全局中断 } /*------------------------------------------------- init_HMI -------------------------------------------------*/ void init_HMI() { if(table==0){ OLED_ShowString(0,0,"CDBA?:??????"); OLED_ShowString(100,0,"@??");//还原温度单位和名称 OLED_ShowString(0,2,"AB1;0:????"); OLED_ShowString(96,2,"<=>"); OLED_ShowString(0,4,"AB2;5:????"); OLED_ShowString(96,4,"<=>"); OLED_ShowString(0,6,"AB10?:????"); OLED_ShowString(96,6,"<=>");} else { OLED_ShowString(0,0,"???????????????");//整排清空 OLED_ShowCHinese(10,0,0); //颗 OLED_ShowCHinese(28,0,1); //粒 OLED_ShowCHinese(46,0,2); //数 OLED_ShowCHinese(64,0,3); //量 OLED_ShowCHinese(82,0,4); //( OLED_ShowCHinese(100,0,5); //个 OLED_ShowCHinese(118,0,6); //) OLED_ShowString(0,2,"AB0;3:????"); OLED_ShowString(96,2,"???"); OLED_ShowString(0,4,"AB0;5:????"); OLED_ShowString(96,4,"???"); OLED_ShowString(0,6,"AB1;0:????"); OLED_ShowString(96,6,"???");} } /*------------------------------------------------- main -------------------------------------------------*/ void main(void) { OLED_Init(); //初始化OLED OLED_Clear(); //清空画面 UART_int(); init_HMI(); //OLED_ShowString(0,0,"CDBA?:"); OLED_ShowString(100,0,"@"); while (1) { if(SW==1 && SW_R==0){ //切换画面 table=!table; init_HMI(); Tmep_Tvalue_CH=Tmep_Tvalue_CH-1;//让温度传感器刷新数据 } SW_R=SW; //负责检测上升沿信号 if(table==0){Display_Temp();}//画面一才可以显示温度 Display_PM(); }} /*------------------------------------------------- interrupt -------------------------------------------------*/ void UART1_interrupt (void) interrupt 4 { //串口模拟数据测试，带数据校准 // 42 4D 00 1C 00 34 00 49 00 53 00 25 00 35 00 46 1B 96 07 A7 01 68 00 16 00 07 00 01 71 00 04 72 // 42 4D 00 1C 00 32 00 45 00 50 00 24 00 33 00 43 1C B9 07 E3 01 44 00 18 00 07 00 02 71 00 04 A2 switch (Buf_Switch) { case 0: if(SBUF==0x42){Buf_Switch=1;}else{Buf_Switch=0;} break; case 1: