课设一个星期了，程序和原理图遇到了很多问题，剩这三个还没有解决，麻烦各位大神给点意见，救救孩子！求解决这三个问题： 倒计时不运 作 ，紧急模式没有反应 ，修改时间也没有反应 #include <iom168v.h> const unsigned char disp[] ={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //段选码 unsigned char xs[4]= {0xC0,0xC0,0xC0,0xC0}; unsigned char gs=0; //绿灯 unsigned char ys=0; //黄灯 unsigned char green_second = 9 , yellow_second = 3 ; //用于修改时间的变量 unsigned char k=0; //显示刷新标志 unsigned char flag=0; //转换红绿灯标志位 unsigned char flag1=0; //切换交通灯模式标志位 unsigned char flag2=0; //紧急模式下的切换模式 unsigned char flag3=0; //修改时间 unsigned int Udelay = 1000; //主频为1M void delay_1us(void) //1us延时，实测8us { asm("nop"); //1时钟周期 } void delay_3us(void) //3us,实8us { asm("nop"); } void delay_10us(void) //10us,实9us { asm("nop"); asm("nop"); } void delay_50us(void) //50us,实47us { delay_10us(); delay_10us(); delay_10us(); delay_10us(); delay_10us(); } void delay_100us(void) //100us,实96us { delay_50us(); delay_50us(); } void delay_n100us(unsigned char n100us) //几百us延时 { while(n100us--); delay_100us(); } //延时函数 void delay(unsigned int x) { while(x--); } //IO配置函数 void io_init(void) { DDRD = 0xFF; PORTD = 0xFF; DDRB = 0b00111111; PORTB = 0xFF; DDRC = 0b00111100; PORTC = 0b00111111; PORTC|=0b00111100;//4位位控总不变 } //EEPROM写入、读取 void EEPROM_WRITE(unsigned int uiAddress, unsigned char ucData) { while(EECR & (1<<EEWE));//等待上一次写操作结束 EEAR = uiAddress;//设置地址和数据寄存器 EEDR = ucData; EECR |= (1<<EEMWE); //置位EEMWE EECR |= (1<<EEWE);//置位EEWE 以启动写操作E } void EEPROM_READ(unsigned int uiAddress) { while(EECR & (1<<EEWE)); //等待上一次写操作结束 EEAR = uiAddress;//设置地址寄存器 EECR |= (1<<EERE); //设置EERE 以启动读操作 return /*EEDR*/; //自数据寄存器返回数据 } //译码函数 void decode(unsigned char a/*, unsigned char b*/) { /*switch(b) { case 0 :*/ xs[0] = disp[a / 10]; xs[1] = disp[a % 10]; /*break; case 1 :*/ xs[2] = disp[a / 10]; xs[3] = disp[a % 10]; /*break; }*/ } void shutdownLED(void) { xs[0] = 0xff;xs[1] = 0xff;xs[2] = 0xff;xs[3] = 0xff; //关闭显示清空段选段选 TCCR0B = 0x00; TCCR1B = 0x00; PORTC|=0b00111100; //关位选 } //修改时间 /*void changetime(void) { //只能在普通模式下改变时间 if( ((PINB & 0x80) == 0) && ((flag1 == 0)||(flag1 == 3)) ) { PORTB |= 0x3f; //关闭显示灯 flag3 = (flag3 + 1) % 3; if(flag3 == 0) { flag1 = 0; xs[2] = 0xff; xs[3] = 0xff; } delay(50000); } //修改时间 if(flag3 == 1) { flag1 = 3; //绿灯闪 PORTB &= ~0x24; if((PINC & 0x01) == 0) //+1 { delay_n100us(100); if((PINC & 0x01) == 0) { green_second++; EEPROM_WRITE(0x00, green_second); delay(40000); } } if((PINC & 0x02) == 0) //-1 { delay_n100us(100); if((PINC & 0x02) == 0) { if(green_second > 0) { green_second--; EEPROM_WRITE(0x00, green_second); delay(40000); } } } //数码管2显示绿灯时间 decode(green_second/*, 1*//*); } if(flag3 == 2)//2黄灯 { //黄灯闪 PORTB &= ~0x12; if((PINC & 0x01) == 0) //+1 { delay_n100us(100); if((PINC & 0x01) == 0) { yellow_second++; EEPROM_WRITE(0x02, yellow_second); UDR0 = 0x02; delay(10000); UDR0 = yellow_second; delay(40000); } } if((PINC & 0x02) == 0) //-1 { delay_n100us(100); if((PINC & 0x02) == 0) { if(yellow_second > 0) { yellow_second--; EEPROM_WRITE(0x02, yellow_second); UDR0 = 0x02; delay(10000); UDR0 = yellow_second; delay(40000); } } } //数码管2显示黄灯时间 decode(yellow_second/*, 1*//*); } }*/ //红绿灯显示函数 void led(void) { switch(flag1) { case 0: {//日间模式 TCCR0B = 0x03; TCCR1B = 0x0b; switch(flag) { case 0: xs[2]= 0xbf; xs[3]= 0xbf; decode(gs/*, 0*/); PORTB |= 0x08; //关闭左右红灯 PORTB |= 0x02; //关闭上下黄灯 PORTB &= ~0x20; //开启左右绿灯 PORTB &= ~0x01; //开启上下红灯 break; case 1: decode(ys/*, 0*/); PORTB &= ~0x01; //开启上下红灯 PORTB |= 0x20; //关闭左右绿灯 PORTB &= ~0x10; //开启左右黄灯 if(ys <= 3) { decode(ys/*, 1*/); } break; case 2: xs[0]= 0xbf; xs[1]= 0xbf; decode(gs/*, 1*/); PORTB |= 0x10; //关闭左右黄灯 PORTB |= 0x01; //关闭上下红灯 PORTB &= ~0x04; //开启上下绿灯 PORTB &= ~0x08; //开启左右红灯 break; case 3: decode(ys/*, 1*/); PORTB &= ~0x08; //开启左右红灯 PORTB |= 0x04; //关闭上下绿灯 PORTB &= ~0x02; //开启上下黄灯 if(ys <= 3) { decode(ys/*, 0*/); } break; } break;} case 1: //紧急模式 { PORTB |= 0x3f; shutdownLED(); switch(flag2) { case 0://紧急模式1 { PORTB &= ~0x08;//开启左右红灯 PORTB &= ~0x01; //开启上下红灯 break; } case 1://紧急模式2 { PORTB &= ~0x20; //开启左右绿灯 PORTB &= ~0x01; //开启上下红灯 break; } case 2://紧急模式3 { PORTB &= ~0x04;//开启上下绿灯 PORTB &= ~0x08;//开启左右红灯 break; } //break;//自己加的 } break; } case 2: //夜间模式 { PORTB |= 0x3f; shutdownLED(); flag2 = 0; PORTB &= ~0x02;//开启上下黄灯 PORTB &= ~0x10;//开启左右黄灯 delay(50000); PORTB |= 0x02;//关闭上下黄灯 PORTB |= 0x10;//关闭左右黄灯 delay(50000); break; } case 3: { TCCR1B = 0x00; //关闭计时 xs[0] = 0xbf; xs[1] = 0xbf; break; } } } //主函数 void main(void) { gs = green_second; ys = yellow_second; io_init(); //IO口初始化 //定时器初始化 timer0_init(); timer1_init(); SREG|=0x80; //开启总中断 //数据写入EEPROM EEPROM_READ(0x00/*,green_second*/);delay(10); EEPROM_READ(0x02/*,yellow_second*/);delay(10); if(green_second>50) EEPROM_WRITE(0x00, gs); if(yellow_second>50) EEPROM_WRITE(0x02, ys); EEPROM_READ(0x00/*green_second*/);delay(10); EEPROM_READ(0x02/* yellow_second*/);delay(10); gs = green_second; ys = yellow_second; delay(10000); while(1) { //修改模式 if( ((PINB & 0x40) == 0) && (flag3 == 0)) { PORTB |= 0x3f; flag1 = (flag1 + 1) % 3; delay(20000); } //紧急模式下切换 if( ((PINB & 0x80) == 0) && (flag1 == 1)) { PORTB |= 0x3f; flag2 = 0; delay(20000); } //东西方向 if( ((PINC & 0x01) == 0) && (flag1 == 1)) { PORTB |= 0x3f; flag2 = 1; delay(20000); } //南北方向 if( ((PINC & 0x02) == 0) && (flag1 == 1)) { PORTB |= 0x3f; flag2 = 2; delay(20000); } //led显示函数 led(); //修改时间函数 //changetime(); } } // 定时器0的初始化 void timer0_init(void) { TCCR0A = 0x02; //CTC模式 TCCR0B = 0x03; //64分频 OCR0A = 78; //5ms 78.125 TIMSK0 = 0x02;/*比较中断A允许*/ TIFR0 = 0x02; } //定时器1的初始化 void timer1_init(void) { TCCR1A = 0x00; //CTC模式 TCCR1B = 0x0b; //64分频 OCR1A = 15625; //1s = 15625 TIMSK1 = 0x02; /*比较中断A允许*/ TIFR1 = 0x02; } extern unsigned char k; extern unsigned char xs[4]; extern unsigned char green_second, yellow_second; extern unsigned char gs; extern unsigned char ys; extern unsigned char flag; extern unsigned char flag1; //切换交通灯模式标志位 extern unsigned char flag2; //紧急模式下的切换模式 extern unsigned char flag3; //修改时间 #pragma interrupt_handler Int_TCCR1A:12 void Int_TCCR1A(void) { switch(flag) { case 0 : gs--; //decode(gs);//zi+ ys = yellow_second; if(gs == 0) { flag = 1; } break; case 1 : ys--; //decode(ys);//+ gs = green_second; if(ys == 0) { flag = 2; } break; case 2 : gs--; //decode(gs); //+ ys = yellow_second; if(gs == 0) { flag = 3; } break; case 3 : ys--; //decode(ys);//+ gs = green_second; if(ys == 0) { flag = 0; } break; } } // 中断服务程序的功能：刷新段码与位控制，用变量 K 实现轮流刷新的目的 #pragma interrupt_handler Int_TCCR0A:15 void Int_TCCR0A(void) { k=(++k)%4; PORTC|=0b00111100;//关位选 PORTD=xs[4]; switch(k) { case 0: PORTC &= ~0x04; //PORTD &= ~0x04;//显示千位 break; case 1: PORTC &= ~0x08; //PORTD &= ~0x08;//显示百位 break; case 2: PORTC &= ~0x10; //PORTD &= ~0x80;//显示十位 break; case 3: PORTC &= ~0x20; //PORTC &= ~0x08;//显示个位 break; default: ; } } 复制代码
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