#include <reg52.h> #include <intrins.h> // 引脚定义 - 根据普中A2开发板原理图调整 #define LCD1602_DATAPINS P0; sbit DS1302_SCLK = P3^6; // 根据原理图调整 sbit DS1302_IO = P3^4; // 根据原理图调整 sbit DS1302_RST = P3^5; // 根据原理图调整 sbit DS18B20_DQ = P3^7; // 根据原理图调整 sbit LCD_RS = P2^6; sbit LCD_RW = P2^5; sbit LCD_EN = P2^7; sbit BUZZER = P1^0; // 无源蜂鸣器连接到OUT5，根据原理图调整 sbit MOTOR = P2^4; // 直流电机连接到OUT1，根据原理图调整 sbit LED_R = P2^1; sbit LED_G = P2^2; sbit LED_B = P2^3; // 矩阵按键引脚定义 - 根据原理图调整 sbit KEY_ROW2 = P1^1; sbit KEY_ROW3 = P1^2; sbit KEY_ROW4 = P1^3; sbit KEY_COL1 = P1^4; sbit KEY_COL2 = P1^5; sbit KEY_COL3 = P1^6; sbit KEY_COL4 = P1^7; // 全局变量定义 unsigned char g_hour, g_minute, g_second; // 当前时间 unsigned char g_temp; // 当前温度 unsigned char g_temp_threshold = 200; // 温度阈值，默认200℃ unsigned char g_motor_speed = 0; // 电机速度档位 0-停止,1-低速,2-中速,3-高速 unsigned char g_motor_duty = 0; // 电机PWM占空比 unsigned char g_system_mode = 0; // 系统模式 0-时钟,1-定时,2-温度,3-电机 unsigned char g_timer_minutes[3] = {0, 0, 0}; // 三组定时器剩余时间 unsigned char g_timer_status[3] = {0, 0, 0}; // 三组定时器状态 0-未设置,1-运行,2-暂停 unsigned char g_key_value = 0; // 按键值 unsigned char g_display_refresh = 1; // 显示刷新标志 unsigned int g_pwm_count = 0; // PWM计数器 unsigned int g_second_count = 0; // 秒计数器 unsigned int g_temp_count = 0; // 温度采集计数器 unsigned char g_current_timer = 0; // 当前选中的定时器组(0-2) unsigned char g_edit_mode = 0; // 编辑模式 0-正常,1-时间编辑,2-温度阈值编辑,3-定时器编辑 // 函数声明 void System_Init(); void DelayMS(unsigned int ms); void LCD_Init(); void LCD_Write_Command(unsigned char cmd); void LCD_Write_Data(unsigned char dat); void LCD_Set_Position(unsigned char x, unsigned char y); void LCD_Show_String(unsigned char x, unsigned char y, unsigned char *str); void LCD_Show_Number(unsigned char x, unsigned char y, unsigned char num); void LCD_Show_Number2(unsigned char x, unsigned char y, unsigned char num); // 显示两位数 void DS1302_Init(); void DS1302_Write_Byte(unsigned char dat); unsigned char DS1302_Read_Byte(); void DS1302_Write_Data(unsigned char addr, unsigned char dat); unsigned char DS1302_Read_Data(unsigned char addr); void DS1302_Get_Time(); void DS1302_Set_Time(); void DS18B20_Init(); void DS18B20_Write_Byte(unsigned char dat); unsigned char DS18B20_Read_Byte(); unsigned char DS18B20_Read_Temp(); unsigned char Key_Scan(); void Key_Process(); void Timer_Init(); void Buzzer_Beep(unsigned char type); void Motor_Control(); void Display_Clock(); void Display_Timer(); void Display_Temp(); void Display_Motor(); void Process_Timers(); void Check_Temperature(); void Edit_Time(); void Edit_TempThreshold(); void Edit_Timer(); // 主函数 void main() { System_Init(); while(1) { if(Key_Scan()) // 按键扫描 Key_Process(); // 按键处理 // 显示刷新 if(g_display_refresh) { g_display_refresh = 0; switch(g_system_mode) { case 0: Display_Clock(); break; case 1: Display_Timer(); break; case 2: Display_Temp(); break; case 3: Display_Motor(); break; } } // 温度检测(每2秒一次) if(g_temp_count >= 2000) { g_temp_count = 0; g_temp = DS18B20_Read_Temp(); Check_Temperature(); g_display_refresh = 1; } // 定时器处理 Process_Timers(); // 电机控制 Motor_Control(); } } // 系统初始化 void System_Init() { // 初始化IO口 P0 = 0xFF; P1 = 0xFF; P2 = 0xFF; P3 = 0xFF; LCD_Init(); DS1302_Init(); DS18B20_Init(); Timer_Init(); LCD_Show_String(0, 0, "Kitchen Assistant"); LCD_Show_String(0, 1, "Initializing..."); DelayMS(1000); // 读取初始时间 DS1302_Get_Time(); // 清屏 LCD_Write_Command(0x01); DelayMS(2); g_display_refresh = 1; } // LCD初始化 void LCD_Init() { LCD_Write_Command(0x38); // 16x2显示，5x7点阵，8位数据接口 DelayMS(5); LCD_Write_Command(0x0C); // 显示开，无光标，不闪烁 DelayMS(5); LCD_Write_Command(0x06); // 读写后地址自动加1 DelayMS(5); LCD_Write_Command(0x01); // 清屏 DelayMS(5); } // 写LCD命令 void LCD_Write_Command(unsigned char cmd) { LCD_RS = 0; LCD_RW = 0; LCD_EN = 0; P0 = cmd; DelayMS(1); LCD_EN = 1; DelayMS(1); LCD_EN = 0; } // 写LCD数据 void LCD_Write_Data(unsigned char dat) { LCD_RS = 1; LCD_RW = 0; LCD_EN = 0; P0 = dat; DelayMS(1); LCD_EN = 1; DelayMS(1); LCD_EN = 0; } // 设置LCD显示位置 void LCD_Set_Position(unsigned char x, unsigned char y) { unsigned char addr; if(y == 0) addr = 0x80 + x; else addr = 0xC0 + x; LCD_Write_Command(addr); } // 显示字符串 void LCD_Show_String(unsigned char x, unsigned char y, unsigned char *str) { LCD_Set_Position(x, y); while(*str != '\0') { LCD_Write_Data(*str); str++; } } // 显示数字 void LCD_Show_Number(unsigned char x, unsigned char y, unsigned char num) { LCD_Set_Position(x, y); if(num >= 100) LCD_Write_Data(num / 100 + '0'); if(num >= 10) LCD_Write_Data(num % 100 / 10 + '0'); LCD_Write_Data(num % 10 + '0'); } // 显示两位数 void LCD_Show_Number2(unsigned char x, unsigned char y, unsigned char num) { LCD_Set_Position(x, y); LCD_Write_Data(num / 10 + '0'); LCD_Write_Data(num % 10 + '0'); } // DS1302初始化 void DS1302_Init() { DS1302_RST = 0; DS1302_SCLK = 0; } // DS1302写一个字节 void DS1302_Write_Byte(unsigned char dat) { unsigned char i; for(i = 0; i < 8; i++) { DS1302_IO = dat & 0x01; DS1302_SCLK = 1; _nop_(); DS1302_SCLK = 0; _nop_(); dat >>= 1; } } // DS1302读一个字节 unsigned char DS1302_Read_Byte() { unsigned char i, dat = 0; for(i = 0; i < 8; i++) { dat >>= 1; if(DS1302_IO) dat |= 0x80; DS1302_SCLK = 1; _nop_(); DS1302_SCLK = 0; _nop_(); } return dat; } // DS1302写数据 void DS1302_Write_Data(unsigned char addr, unsigned char dat) { DS1302_RST = 0; _nop_(); DS1302_SCLK = 0; _nop_(); DS1302_RST = 1; _nop_(); DS1302_Write_Byte(addr); DS1302_Write_Byte(dat); DS1302_SCLK = 1; _nop_(); DS1302_RST = 0; _nop_(); } // DS1302读数据 unsigned char DS1302_Read_Data(unsigned char addr) { unsigned char dat; DS1302_RST = 0; _nop_(); DS1302_SCLK = 0; _nop_(); DS1302_RST = 1; _nop_(); DS1302_Write_Byte(addr); dat = DS1302_Read_Byte(); DS1302_SCLK = 1; _nop_(); DS1302_RST = 0; _nop_(); return dat; } // 获取DS1302时间 void DS1302_Get_Time() { unsigned char tmp; tmp = DS1302_Read_Data(0x81); // 读取秒 g_second = (tmp >> 4) * 10 + (tmp & 0x0F); tmp = DS1302_Read_Data(0x83); // 读取分 g_minute = (tmp >> 4) * 10 + (tmp & 0x0F); tmp = DS1302_Read_Data(0x85); // 读取时 g_hour = (tmp >> 4) * 10 + (tmp & 0x0F); } // 设置DS1302时间 void DS1302_Set_Time() { // 十进制转BCD码 unsigned char second_bcd = (g_second / 10) << 4 | (g_second % 10); unsigned char minute_bcd = (g_minute / 10) << 4 | (g_minute % 10); unsigned char hour_bcd = (g_hour / 10) << 4 | (g_hour % 10); DS1302_Write_Data(0x8E, 0x00); // 关闭写保护 DS1302_Write_Data(0x80, second_bcd); DS1302_Write_Data(0x82, minute_bcd); DS1302_Write_Data(0x84, hour_bcd); DS1302_Write_Data(0x8E, 0x80); // 开启写保护 } // DS18B20初始化 void DS18B20_Init() { DS18B20_DQ = 1; _nop_(); DS18B20_DQ = 0; DelayMS(10); // 延时480us以上 DS18B20_DQ = 1; DelayMS(1); // 等待15-60us // 此处可添加存在脉冲检测 DelayMS(10); // 等待恢复 } // DS18B20写一个字节 void DS18B20_Write_Byte(unsigned char dat) { unsigned char i; for(i = 0; i < 8; i++) { DS18B20_DQ = 0; _nop_(); DS18B20_DQ = dat & 0x01; DelayMS(1); DS18B20_DQ = 1; dat >>= 1; } DelayMS(1); } // DS18B20读一个字节 unsigned char DS18B20_Read_Byte() { unsigned char i, dat = 0; for(i = 0; i < 8; i++) { dat >>= 1; DS18B20_DQ = 0; _nop_(); DS18B20_DQ = 1; _nop_(); if(DS18B20_DQ) dat |= 0x80; DelayMS(1); } return dat; } // DS18B20读取温度 unsigned char DS18B20_Read_Temp() { unsigned char temp_l, temp_h; unsigned int temp; DS18B20_Init(); DS18B20_Write_Byte(0xCC); // 跳过ROM DS18B20_Write_Byte(0x44); // 启动温度转换 DelayMS(10); DS18B20_Init(); DS18B20_Write_Byte(0xCC); // 跳过ROM DS18B20_Write_Byte(0xBE); // 读取温度寄存器 temp_l = DS18B20_Read_Byte(); temp_h = DS18B20_Read_Byte(); temp = temp_h; temp <<= 8; temp |= temp_l; // 转换为摄氏度 temp = temp * 0.0625; return (unsigned char)temp; } // 按键扫描 unsigned char Key_Scan() { static unsigned char key_pressed = 0; unsigned char row_value, key_value = 0; // 扫描第一行 KEY_ROW2 = 1; KEY_ROW3 = 1; KEY_ROW4 = 1; row_value = (~P1) & 0xF0; if(row_value) { DelayMS(10); // 消抖 if((~P1) & 0xF0) { if(row_value & 0x10) key_value = 1; else if(row_value & 0x20) key_value = 2; else if(row_value & 0x40) key_value = 3; else if(row_value & 0x80) key_value = 4; while((~P1) & 0xF0); // 等待按键释放 key_pressed = 1; return key_value; } } // 扫描第二行 KEY_ROW2 = 0; KEY_ROW3 = 1; KEY_ROW4 = 1; row_value = (~P1) & 0xF0; if(row_value) { DelayMS(10); // 消抖 if((~P1) & 0xF0) { if(row_value & 0x10) key_value = 5; else if(row_value & 0x20) key_value = 6; else if(row_value & 0x40) key_value = 7; else if(row_value & 0x80) key_value = 8; while((~P1) & 0xF0); // 等待按键释放 key_pressed = 1; return key_value; } } // 扫描第三行 KEY_ROW2 = 1; KEY_ROW3 = 0; KEY_ROW4 = 1; row_value = (~P1) & 0xF0; if(row_value) { DelayMS(10); // 消抖 if((~P1) & 0xF0) { if(row_value & 0x10) key_value = 9; else if(row_value & 0x20) key_value = 10; else if(row_value & 0x40) key_value = 11; else if(row_value & 0x80) key_value = 12; while((~P1) & 0xF0); // 等待按键释放 key_pressed = 1; return key_value; } } // 扫描第四行 KEY_ROW2 = 1; KEY_ROW3 = 1; KEY_ROW4 = 0; row_value = (~P1) & 0xF0; if(row_value) { DelayMS(10); // 消抖 if((~P1) & 0xF0) { if(row_value & 0x10) key_value = 13; else if(row_value & 0x20) key_value = 14; else if(row_value & 0x40) key_value = 15; else if(row_value & 0x80) key_value = 16; while((~P1) & 0xF0); // 等待按键释放 key_pressed = 1; return key_value; } } key_pressed = 0; return 0; } // 按键处理 void Key_Process() { unsigned char key = Key_Scan(); if(key == 0) return; Buzzer_Beep(1); // 短提示音 switch(key) { case 1: // 确认键 if(g_edit_mode == 0) { // 长按3秒进入时间校准 DelayMS(3000); if(Key_Scan() == 1) // 仍然按住确认键 { g_edit_mode = 1; // 进入时间编辑模式 g_display_refresh = 1; } } else { // 在编辑模式下，确认键用于保存设置 if(g_edit_mode == 1) { DS1302_Set_Time(); // 保存时间设置 } g_edit_mode = 0; // 退出编辑模式 g_display_refresh = 1; } break; case 2: // 定时键 g_system_mode = 1; g_display_refresh = 1; break; case 3: // 启动键 if(g_system_mode == 1 && g_timer_status[g_current_timer] != 1) { g_timer_status[g_current_timer] = 1; // 启动定时器 g_display_refresh = 1; } break; case 4: // 暂停键 if(g_system_mode == 1 && g_timer_status[g_current_timer] == 1) { g_timer_status[g_current_timer] = 2; // 暂停定时器 g_display_refresh = 1; } break; case 5: // 取消键 if(g_system_mode == 1) { g_timer_status[g_current_timer] = 0; // 取消定时器 g_timer_minutes[g_current_timer] = 0; g_display_refresh = 1; } break; case 6: // 阈值键 if(g_system_mode == 2 && g_edit_mode == 0) { g_edit_mode = 2; // 进入温度阈值编辑模式 g_display_refresh = 1; } break; case 7: // 电机键 g_system_mode = 3; if(g_motor_speed < 3) g_motor_speed++; else g_motor_speed = 1; g_display_refresh = 1; break; case 8: // 停止键 g_motor_speed = 0; g_display_refresh = 1; break; case 9: // 模式键 g_system_mode = (g_system_mode + 1) % 4; g_display_refresh = 1; break; case 10: // 上键 if(g_edit_mode == 1) // 时间编辑模式 { // 根据当前编辑的位置调整时间 // 简化实现：只调整分钟 g_minute = (g_minute + 1) % 60; g_display_refresh = 1; } else if(g_edit_mode == 2) // 温度阈值编辑模式 { if(g_temp_threshold < 250) g_temp_threshold += 5; g_display_refresh = 1; } else if(g_system_mode == 1) // 定时器模式 { if(g_timer_minutes[g_current_timer] < 99) g_timer_minutes[g_current_timer]++; g_display_refresh = 1; } break; case 11: // 下键 if(g_edit_mode == 1) // 时间编辑模式 { // 根据当前编辑的位置调整时间 // 简化实现：只调整分钟 g_minute = (g_minute > 0) ? g_minute - 1 : 59; g_display_refresh = 1; } else if(g_edit_mode == 2) // 温度阈值编辑模式 { if(g_temp_threshold > 50) g_temp_threshold -= 5; g_display_refresh = 1; } else if(g_system_mode == 1) // 定时器模式 { if(g_timer_minutes[g_current_timer] > 0) g_timer_minutes[g_current_timer]--; g_display_refresh = 1; } break; case 12: // 切换键 if(g_system_mode == 1) // 定时器模式 { g_current_timer = (g_current_timer + 1) % 3; g_display_refresh = 1; } break; default: break; } } // 定时器初始化 void Timer_Init() { TMOD = 0x11; // 定时器0和1都工作于模式1 TH0 = 0xFC; // 1ms定时 TL0 = 0x66; TH1 = 0xFE; // 0.5ms定时用于PWM TL1 = 0x0C; EA = 1; // 开启总中断 ET0 = 1; // 开启定时器0中断 ET1 = 1; // 开启定时器1中断 TR0 = 1; // 启动定时器0 TR1 = 1; // 启动定时器1 } // 蜂鸣器提示音 void Buzzer_Beep(unsigned char type) { static unsigned char beep_count = 0; switch(type) { case 1: // 短提示音 beep_count = 10; // 响10次 break; case 2: // 定时结束提示音 beep_count = 30; // 响30次 LED_G = 1; // 绿灯亮 break; case 3: // 超温报警 beep_count = 255; // 长鸣 LED_R = 1; // 红灯亮 break; default: break; } } // 电机控制 void Motor_Control() { // 根据档位设置占空比 switch(g_motor_speed) { case 0: // 停止 g_motor_duty = 0; LED_B = 0; break; case 1: // 低速 g_motor_duty = 30; LED_B = 1; break; case 2: // 中速 g_motor_duty = 60; LED_B = 1; break; case 3: // 高速 g_motor_duty = 90; LED_B = 1; break; default: break; } } // 显示时钟模式 void Display_Clock() { LCD_Show_String(0, 0, "Time: "); LCD_Show_Number2(6, 0, g_hour); LCD_Show_String(8, 0, ":"); LCD_Show_Number2(9, 0, g_minute); LCD_Show_String(11, 0, ":"); LCD_Show_Number2(12, 0, g_second); LCD_Show_String(0, 1, "Temp: "); LCD_Show_Number(6, 1, g_temp); LCD_Show_String(9, 1, "C Mode:Clock"); } // 显示定时模式 void Display_Timer() { LCD_Show_String(0, 0, "Timer"); LCD_Show_Number(5, 0, g_current_timer + 1); LCD_Show_String(6, 0, ": "); if(g_timer_status[g_current_timer] == 0) LCD_Show_String(8, 0, "Off "); else if(g_timer_status[g_current_timer] == 1) { LCD_Show_Number2(8, 0, g_timer_minutes[g_current_timer]); LCD_Show_String(10, 0, "min Run "); } else if(g_timer_status[g_current_timer] == 2) { LCD_Show_Number2(8, 0, g_timer_minutes[g_current_timer]); LCD_Show_String(10, 0, "min Pause"); } // 显示其他定时器状态 LCD_Show_String(0, 1, "T1:"); if(g_timer_status[0] == 0) LCD_Show_String(3, 1, "Off "); else LCD_Show_Number2(3, 1, g_timer_minutes[0]); LCD_Show_String(6, 1, "T2:"); if(g_timer_status[1] == 0) LCD_Show_String(9, 1, "Off "); else LCD_Show_Number2(9, 1, g_timer_minutes[1]); LCD_Show_String(12, 1, "T3:"); if(g_timer_status[2] == 0) LCD_Show_String(15, 1, "Off"); else LCD_Show_Number2(15, 1, g_timer_minutes[2]); } // 显示温度模式 void Display_Temp() { LCD_Show_String(0, 0, "Current: "); LCD_Show_Number(9, 0, g_temp); LCD_Show_String(12, 0, "C"); LCD_Show_String(0, 1, "Threshold: "); LCD_Show_Number(11, 1, g_temp_threshold); LCD_Show_String(14, 1, "C"); if(g_temp >= g_temp_threshold) LCD_Show_String(8, 1, "High "); else LCD_Show_String(8, 1, "Normal"); } // 显示电机模式 void Display_Motor() { LCD_Show_String(0, 0, "Motor: "); if(g_motor_speed == 0) LCD_Show_String(7, 0, "Off "); else { LCD_Show_Number(7, 0, g_motor_speed); LCD_Show_String(8, 0, " Speed"); } LCD_Show_String(0, 1, "Status: "); if(g_motor_speed == 0) LCD_Show_String(8, 1, "Stopped "); else LCD_Show_String(8, 1, "Running "); } // 处理定时器 void Process_Timers() { unsigned char i; static unsigned int minute_count = 0; minute_count++; if(minute_count >= 60000) // 1分钟 { minute_count = 0; // 更新所有运行的定时器 for(i = 0; i < 3; i++) { if(g_timer_status[i] == 1 && g_timer_minutes[i] > 0) { g_timer_minutes[i]--; if(g_timer_minutes[i] == 0) { // 定时器到期 g_timer_status[i] = 0; Buzzer_Beep(2); // 触发提示音 g_display_refresh = 1; } } } } } // 检查温度 void Check_Temperature() { if(g_temp >= g_temp_threshold) { Buzzer_Beep(3); // 超温报警 if(g_motor_speed != 0) { g_motor_speed = 0; // 停止电机 g_display_refresh = 1; } } else { // 温度正常，关闭报警 BUZZER = 0; LED_R = 0; LED_G = 0; } } // 延时函数 void DelayMS(unsigned int ms) { unsigned int i, j; for(i = 0; i < ms; i++) for(j = 0; j < 114; j++); } // 定时器0中断服务函数 - 用于系统计时 void Timer0_ISR() interrupt 1 { TH0 = 0xFC; TL0 = 0x66; g_second_count++; g_temp_count++; // 每秒更新一次时间 if(g_second_count >= 1000) { g_second_count = 0; g_second++; if(g_second >= 60) { g_second = 0; g_minute++; if(g_minute >= 60) { g_minute = 0; g_hour++; if(g_hour >= 24) { g_hour = 0; } } } // 每秒刷新时钟模式显示 if(g_system_mode == 0) g_display_refresh = 1; } } // 定时器1中断服务函数 - 用于PWM生成和蜂鸣器控制 void Timer1_ISR() interrupt 3 { static unsigned char beep_state = 0; static unsigned int beep_delay = 0; static unsigned char beep_count = 0; TH1 = 0xFE; TL1 = 0x0C; // PWM计数器 g_pwm_count++; if(g_pwm_count >= 100) // PWM周期 g_pwm_count = 0; // 电机PWM控制 if(g_pwm_count < g_motor_duty) MOTOR = 1; else MOTOR = 0; // 蜂鸣器控制 if(beep_count > 0) { if(beep_delay > 0) { beep_delay--; } else { beep_state = !beep_state; BUZZER = beep_state; if(beep_state) beep_delay = 10; // 高电平时间 else { beep_delay = 10; // 低电平时间 beep_count--; } } } else { BUZZER = 0; } }