蓝桥杯第三届决赛门禁系统

/******************************************************************************* * 目标：第三届题目 “门禁系统” 设计任务书 * 密码正确进入，密码错误回到时钟状态 * 注意：J3跳线配置为IO方式，J5配置为KBD、J2配置为1-3和2-4 * 作者：祝云翔 * 日期版本：2021-1-23/V1.0 *******************************************************************************/ #include <STC15F2K60S2.h> #include "intrins.h" #include "ds1302.h" #include "iic.h" #define somenop \ { \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ _nop_(); \ } // 15个 sbit TX = P1 ^ 0; //发射引脚 sbit RX = P1 ^ 1; //接收引脚 // 小数点是第8位为0 原本数字 - 0x80 unsigned char data_pros[] = { 0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90, 0xff, 0xbf}; unsigned char dspbuf[8] = {10, 10, 10, 10, 10, 10, 10, 10}; //显示缓冲区 unsigned char *time_ds1302; // 时间 unsigned char ds1302_flag = 0; // 0 1 unsigned char mode_flag = 1; // 初始值1 unsigned char key_flag = 0; unsigned char smg_location = 2; // 从2开始 unsigned char ultrasonic_flag = 0; // 初始化值 void close_init() { P2 = 0xA0; P0 = 0x00; P2 = 0x80; P0 = 0xff; P2 = 0x00; } void Delay5ms() //@11.0592MHz { unsigned char i, j; i = 54; j = 199; do { while (--j) ; } while (--i); } void Delay500ms() //@11.0592MHz { unsigned char i, j, k; _nop_(); _nop_(); i = 22; j = 3; k = 227; do { do { while (--k) ; } while (--j); } while (--i); } // 显示函数 dspbuf为数码管的缓冲区 void display() { static unsigned char dspnum = 0; // 数码管的位置 P2 = 0xE0; P2 = 0xff; // 消影 P2 = 0xc0; P0 = (1 << dspnum); P2 = 0xe0; P0 = data_pros[dspbuf[dspnum]]; P2 = 0x00; if (++dspnum == 8) dspnum = 0; } void Timer0Init(void) // 1毫秒@11.0592MHz { AUXR |= 0x80; //定时器时钟1T模式 TMOD &= 0xF0; //设置定时器模式 TL0 = 0xCD; //设置定时初值 TH0 = 0xD4; //设置定时初值 TF0 = 0; //清除TF0标志 TR0 = 1; //定时器0开始计时 // add TH1 = 0; TL1 = 0; ET0 = 1; EA = 1; } // 注意J5设置为KBD模式（J5的2和1相连） unsigned char read_keys() { static unsigned char hang, lie; static unsigned char key_state = 0, key_value = 0; switch (key_state) { case 0: { P3 = 0x0f; P42 = 0; P44 = 0; // 消抖 if (P3 != 0x0f) //有按键按下 key_state = 1; } break; case 1: { P3 = 0x0f; P42 = 0; P44 = 0; Delay5ms(); if (P3 != 0x0f) //有按键按下 确定行 { if (P30 == 0) hang = 1; if (P31 == 0) hang = 2; if (P32 == 0) hang = 3; if (P33 == 0) hang = 4; } else key_state = 0; P3 = 0xf0; P42 = 1; P44 = 1; Delay5ms(); if ((P3 != 0xf0) || (P42 != 0) || (P44 != 0)) //有按键按下 确定列 { if (P44 == 0) lie = 1; if (P42 == 0) lie = 2; if (P35 == 0) lie = 3; if (P34 == 0) lie = 4; key_state = 2; key_value = lie + (hang - 1) * 4 - 1; //修改 return key_value; } else key_state = 0; } break; case 2: { P3 = 0x0f; P42 = 0; P44 = 0; if (P3 == 0x0f) //按键放开 key_state = 0; } break; } return 0xff; } // 判断密码是否正确 正确传回1 unsigned char password(unsigned char yi[], unsigned char er[]) { unsigned char j = 0; for (j = 0; j < 6; j++) { if (yi[j] != er[j + 2]) return 0xff; } return 1; } // 判断密码是否都为0-9 正确传回1 unsigned char password_0_9(unsigned char yi[]) { unsigned char j = 0; for (j = 2; j < 6; j++) { if (yi[j] > 9) return 0xff; } return 1; } // TX引脚发送40KHz方波信号驱动超声波发送探头 //使用软件延时注意RC振荡器频率 void send_wave(void) { unsigned char i = 8; //发送8个脉冲 unsigned char j = 0; do { TX = 1; for (j = 0; j < 16; j++) somenop; TX = 0; for (j = 0; j < 16; j++) somenop; } while (i--); } // 超声波测距 TMOD |= 0x11; //配置定时器工作模式 999 无返回 unsigned int ultrasonic(void) { // 包括超声波 // TH1 = 0; // TL1 = 0; // ET0 = 1; // EA = 1; static unsigned int distance = 0, time = 0; /** 关闭定时器0中断:计算超声波发送到返回的时间 */ // ET0 = 0; send_wave(); //发送方波信号 TR1 = 1; //启动计时 while ((RX == 1) && (TF1 == 0)) ; //等待收到脉冲，没有计满溢出 TR1 = 0; //关闭计时 //发生溢出 if (TF1 == 1) { TF1 = 0; distance = 999; //无返回 } else { /** 计算时间 */ time = TH1; time <<= 8; time |= TL1; distance = (unsigned int)(time * 0.017); //计算距离 } TH1 = 0; TL1 = 0; return distance; } void main() { unsigned char key_value = 0; // 键值 unsigned char i; unsigned char eeprom_value[6] = {6, 5, 4, 3, 2, 1}; unsigned char eeprom_value_old[6] = {6, 5, 4, 3, 2, 1}; unsigned char eeprom_location[6] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05}; unsigned char password_value = 0; unsigned char password_number = 0; // 错误次数 unsigned int ultrasonic_value = 0; unsigned char now_time = 0; close_init(); Timer0Init(); SetRTC(); // 设置初始时间 Delay5ms(); // for (i = 0; i < 6; i++) // 初始化密码 // { // Write_EEPROM(eeprom_location[i], eeprom_value[i]); // Delay500ms(); // Delay500ms(); // } // Delay500ms(); // Delay500ms(); for (i = 0; i < 6; i++) // 读取存放的密码 { eeprom_value[i] = Read_EEPROM(eeprom_location[i]); // mode_flag = 2; // dspbuf[i] = eeprom_value[i]; Delay500ms(); } while (1) { if ((ds1302_flag == 1) && (mode_flag == 1)) // 时钟 { ds1302_flag = 0; time_ds1302 = ReadRTC(); // 更新时间 dspbuf[0] = time_ds1302[0]; dspbuf[1] = time_ds1302[1]; dspbuf[2] = 11; dspbuf[3] = time_ds1302[2]; dspbuf[4] = time_ds1302[3]; dspbuf[5] = 11; dspbuf[6] = time_ds1302[4]; dspbuf[7] = time_ds1302[5]; smg_location = 2; now_time = time_ds1302[0] * 10 + time_ds1302[1]; // 判断现在是什么模式 if ((time_ds1302[2] > 0) || (time_ds1302[3] > 0) || (time_ds1302[4] > 0) || (time_ds1302[5] > 0)) now_time++; } if ((ultrasonic_flag == 1) && (mode_flag == 1) && (now_time > 7) && (now_time <= 22)) { ultrasonic_flag = 0; ultrasonic_value = ultrasonic(); // 距离