基于STC51单片机设计的电子沙漏AD原理图+PCB+软件程序源码.zip

#include "STC89C52RC.h" #define BIT(x) 0x01<<x #define FLAG_RECV_TITLE 0xA5 #define FLAG_RECV_END 0x5A #define PLED1 P1 #define PLED2 P2 sbit KEY_MODE=P4^2; //MODE按钮 sbit KEY_UP =P3^4; //+按钮 sbit KEY_DOWN=P3^5; //-按钮 sbit K_X=P3^3; //重力感应X sbit K_Y=P3^2; //重力感应Y sbit HRD=P4^3; //红外接收脚 unsigned char flag_step=0; unsigned char flag_dir=0; //重力感测变量 0-左横放 1-倒置 2-正置 3-右横放 unsigned char flag_dir_last=0;//上次重力感测值 unsigned char var_TMAX=10; //控制沙漏速度变量，越大速度越慢 =10时为1S一格 unsigned char var_key=0; //按钮变量 //基本的LED显示笔段表 unsigned char code Disp0[]={ 0x00,0x00,0x00,0x00, 0x08,0x00,0x00,0x00, 0x0C,0x00,0x00,0x00, 0x1C,0x00,0x00,0x00, 0x1E,0x00,0x00,0x00, 0x3E,0x00,0x00,0x00, 0x3F,0x00,0x00,0x00, 0x7F,0x00,0x00,0x00, 0x7F,0x04,0x00,0x00, 0x7F,0x0C,0x00,0x00, 0x7F,0x0E,0x00,0x00, 0x7F,0x1E,0x00,0x00, 0x7F,0x1F,0x00,0x00, 0x7F,0x3F,0x00,0x00, 0x7F,0x3F,0x04,0x00, 0x7F,0x3F,0x06,0x00, 0x7F,0x3F,0x0E,0x00, 0x7F,0x3F,0x0F,0x00, 0x7F,0x3F,0x1F,0x00, 0x7F,0x3F,0x1F,0x02, 0x7F,0x3F,0x1F,0x06, 0x7F,0x3F,0x1F,0x07, 0x7F,0x3F,0x1F,0x0F, 0x7F,0x3F,0x5F,0x0F, 0x7F,0x3F,0x7F,0x0F, 0x7F,0x3F,0xFF,0x0F, 0x7F,0x7F,0xFF,0x0F, 0x7F,0xFF,0xFF,0x0F, 0xFF,0xFF,0xFF,0x0F }; //显示函数1 void ShowDisp1() { unsigned char i; P0=0x00; for(i=0;i<4;i++) { P1=Disp0[flag_step*4+i]; P2=~Disp0[flag_step*4+i]; P0=BIT(i); P0=0x00; } } //显示函数2 void ShowDisp2() { unsigned char i; P0=0x00; for(i=0;i<4;i++) { P2=Disp0[flag_step*4+i]; P1=~Disp0[flag_step*4+i]; P0=BIT(i); P0=0x00; } } void Key_Scan(void) { if(KEY_UP==0) { var_key=1; while(KEY_UP==0); } else if(KEY_DOWN==0) { var_key=2; while(KEY_DOWN==0); } else if(KEY_MODE==0) { var_key=3; while(KEY_MODE==0); } else var_key=0; } void T0_Init(void) //1毫秒@12.000MHz { AUXR &= 0x7F; //定时器时钟12T模式 TMOD &= 0xF0; //设置定时器模式 TMOD |= 0x01; //设置定时器模式 TL0 = 0x18; //设置定时初值 TH0 = 0xFC; //设置定时初值 TF0 = 0; //清除TF0标志 TR0 = 1; //定时器0开始计时 ET0 = 1; //开启定时器 } void T1_Init(void) //50毫秒定时 12MHZ { AUXR &= 0xBF; //定时器时钟12T模式 TMOD &= 0x0F; //设置定时器模式 TMOD |= 0x10; //设置定时器模式 TL1 = 0xB0; //设置定时初值 TH1 = 0x3C; //设置定时初值 TF1 = 0; //清除TF1标志 TR1 = 1; //定时器1开始计时 ET1 = 1; //开启定时器 } //定时器中断服务函数 void T0_ISR(void) interrupt 1 { static unsigned char i=0; TL0 = 0x18; //设置定时初值 TH0 = 0xFC; //设置定时初值 i++; if(i>7) i=0; //SBUF = P1; } void T1_ISR(void) interrupt 3 { static unsigned char i=0; TL1 = 0xB0; TH1 = 0x3C; i++; if(i>=var_TMAX) { i=0; //执行1s操作 switch(flag_dir) { case 0: case 3: return; break; case 1: if(flag_dir_last==2) flag_step=28-flag_step; ShowDisp2(); flag_dir_last=1; break; case 2: if(flag_dir_last==1) flag_step=28-flag_step; ShowDisp1(); flag_dir_last=2; break; } flag_step++; if(flag_step>28) flag_step=28; } } void UART_Init(void) { PCON |= 0x80; //使能波特率倍速位SMOD SCON = 0x50; //8位数据,可变波特率 AUXR &= 0xBF; //定时器1时钟为Fosc/12,即12T AUXR &= 0xFE; //串口1选择定时器1为波特率发生器 TMOD &= 0x0F; //清除定时器1模式位 TMOD |= 0x20; //设定定时器1为8位自动重装方式 TL1 = 0xF3; //设定定时初值 TH1 = 0xF3; //设定定时器重装值 ET1 = 0; //禁止定时器1中断 TR1 = 1; //启动定时器1 ES = 1; //启用串口中断 } //串口中断服务函数 void UART_INT(void) interrupt 4 { static RecvPos=0; unsigned char temp; if(RI) //有接收信号 { RI = 0; temp = SBUF; SBUF = temp; if(temp==FLAG_RECV_TITLE) //接收到起始信号 { RecvPos=1; } else { switch(RecvPos) { case 1: P1=temp; RecvPos++; break; case 2: P2=temp; RecvPos++; break; case 3: P0=temp; RecvPos++; break; case 4: RecvPos=0; break; } } } if(TI) { TI = 0; } } void main(void) { UART_Init(); T0_Init(); T1_Init(); //开总中断 EA=1; while(1) { flag_dir = K_X | K_Y * 2; //获取方向 Key_Scan(); switch(var_key) { case 1: if(var_TMAX>1) var_TMAX--; break; case 2: if(var_TMAX<20) var_TMAX++; break; } } }