功能：
0.本系统采用STC89C52作为单片机
1.通过WIFI打开密码锁，WiFi模块采用的是ESP8266
2.开锁后可通过WIFI设置新密码，本系统设置了四个功能按键
3.密码连续输入错误三次即报警
命令格式
*Kxxx# 开锁，xxx为密码
*Sxxx# 设置新密码，xxx为密码
仿真的初始密码为000
4.采用DC002作为电源接口可直接输入5V给整个系统供电
原理图：
PCB ：
主程序：
#include <reg52.h>// #include <stc12c5a.h>#include "delay.h"#include "eeprom52.h"sbit RELAY = P3^3; //接口定义sbit BUZZER = P3^4;unsigned char firstBit = 0;//首次接收到标志unsigned char tabBuf[7];//串口数据暂存unsigned char UARTCnt = 0;//串口接收计数unsigned char UARTBusy = 0;//串口判忙unsigned char reportFlag = 0;//数据上报标志unsigned char tabPassword[3] = {'0', '0', '0'}; //默认密码unsigned char i;unsigned int timeNum = 0; //延时计数unsigned int buzzerDelay = 0; //延时计数bit setFlag = 0;bit errorFlag = 0;bit passFlag = 0;unsigned char isNew;void Init_Timer0(void); //函数命令void UART_Init(void);void SendByte(unsigned char dat);void SendStr(unsigned char *s, unsigned char length);void main(void){// Write_EEPROM(); Init_EEPROM();Init_Timer0(); //定时器0初始化UART_Init(); //串口初始?BUZZER = 0; //上电蜂鸣器响一下RELAY = 1;timeNum = 10; //延时计数DelayMs(250);BUZZER = 1;for (i = 0; i < 40; i++) //延时 待wifi稳定{DelayMs(100);}SendStr("AT+CIPMUX=1\r\n", 13); //打开多连接DelayMs(250);SendStr("AT+CIPSERVER=1,8080\r\n", 21); //建立服务 端口号为8080DelayMs(250);while (1) //主循环{if (reportFlag == 1) //上报数据标志置位{TR0 = 0;if (setFlag){Write_EEPROM();SendStr("AT+CIPSEND=0,27\r\n", 17); //发送27位数据for (i = 0; i < 2; i++) //短暂延时{DelayMs(100);}SendStr("Password set successfully!\n", 27);//回应发送数据for (i = 0; i < 2; i++) //延时{DelayMs(100);}setFlag = 0;}else{if (!errorFlag){SendStr("AT+CIPSEND=0,19\r\n", 17); //发送19位数据for (i = 0; i < 2; i++) //短暂延时{DelayMs(100);}SendStr("Password is right!\n", 19); //回应发送数据for (i = 0; i < 2; i++)//延时{DelayMs(100);}}else{SendStr("AT+CIPSEND=0,19\r\n", 17); //发送19位数据for (i = 0; i < 2; i++) //短暂延时{DelayMs(100);}SendStr("Password is error!\n", 19); //回应发送数据for (i = 0; i < 2; i++)//延时{DelayMs(100);}}}reportFlag = 0;TR0 = 1;}}}void Init_Timer0(void){TMOD |= 0x01; //使用模式1，16位定时器，使用"|"符号可以在使用多个定时器时不受影响TH0 = (65536 - 18432) / 256; //重新赋值 20msTL0 = (65536 - 18432) % 256;EA = 1; //总中断打开ET0 = 1; //定时器中断打开TR0 = 1; //定时器开关打开}void UART_Init(void){SCON = 0x50; //串口方式1,1个起始位,1个停止位,8位数据，可变波特率//波特率115200TH2 = 0xFF;TL2 = 0xFD;RCAP2H = 0xFF; //(65536-(FOSC/32/BAUD)) BAUD = 115200 FOSC = 11059200RCAP2L = 0xFD;/********波特率发生器接收和发送相同波特率，内部控制*********/TCLK = 1; //发送时钟标志RCLK = 1; //接收时钟标志C_T2 = 0; //内部定时器EXEN2 = 0; //关闭定时器2中断TR2 = 1; //打开定时器2计数ES = 1; //打开串口中断EA = 1; //打开总中断// PS = 1; //高优先级}void SendByte(unsigned char dat) //串口发送单字节数据{unsigned char time_out = 0;SBUF = dat; //将数据放入SBUF中while ((!TI) && (time_out < 100)) //检测是否发送出去{time_out++;DelayUs2x(10);}//未发送出去 进行短暂延时TI = 0; //清除ti标志}void SendStr(unsigned char *s, unsigned char length) //发送定长度字符串{unsigned char num = 0;while (num < length) //发送长度对比{SendByte(*s); //放松单字节数据s++; //指针++num++; //下一个++}}void Timer0_isr(void) interrupt 1{TH0 = (65536 - 18432) / 256; //重新赋值 20msTL0 = (65536 - 18432) % 256;if (timeNum > 0) //继电器计数处理{timeNum--;}else{RELAY = 1;passFlag = 0;}if (buzzerDelay > 0){buzzerDelay--;}else{BUZZER = 1;}// if (UARTBusy > 0) //串口数据采集处理// {// UARTBusy--;// }// else// {// firstBit = 0;// UARTCnt = 0;// }}void UART_SER(void) interrupt 4 //串行中断服务程序{unsigned char r_buf;static unsigned char errorCnt = 0;if (RI) // 判断是接收中断产生{RI = 0; // 标志位清零r_buf = SBUF;// SBUF = SBUF;// UARTBusy = 20;if (r_buf == '*') // 接收到起始标志{firstBit = 1; // 接收标志成功UARTCnt = 0;tabBuf[UARTCnt++] = r_buf;}else if (firstBit == 1) // 接收到其实标志成功{tabBuf[UARTCnt++] = r_buf;if (UARTCnt >= 6){if (tabBuf[5] == '#'){if (tabBuf[1] == 'K') // 接收到打开命令{if ((tabPassword[0] == tabBuf[2]) && (tabPassword[1] == tabBuf[3]) && (tabPassword[2] == tabBuf[4])) // 密码匹配{passFlag = 1;RELAY = 0;timeNum = 500; // 打开继电器 10sBUZZER = 1;errorCnt = 0;errorFlag = 0;}else{if (errorCnt >= 2){buzzerDelay = 500; //响10sBUZZER = 0;}else{errorCnt++; // 错误次数计算}errorFlag = 1;}reportFlag = 1;}if (passFlag == 1){if (tabBuf[1] == 'S') // 接收到设置命令{tabPassword[0] = tabBuf[2];tabPassword[1] = tabBuf[3];tabPassword[2] = tabBuf[4];reportFlag = 1;setFlag = 1;}}}firstBit = 0;UARTCnt = 0;}}}//if (TI) //如果是发送标志位，清零//TI = 0;}
仿真演示视频：
/video/BV1LP41137vK/
实物演示视频：
/video/BV1XP4y197qt/
