timer1控制交通指示灯.c

单片机C语言程序设计实训100例--基于AVR+PROTEUS仿真

//-----------------------------------------------------------------
//  名称: 定时器T1控制交通指示灯
//-----------------------------------------------------------------
//  说明: 东西向绿灯亮5秒后,黄灯闪烁,闪烁5次后亮红灯,
//        红灯亮后,南北向由红灯变为绿灯,5秒后南北向黄灯闪烁, 
//        闪烁5次后亮红灯,东西向绿灯亮,如此往复.
//        本例将时间设得较短是为了调试的时候能较快的观察到运行效果.
//                
//-----------------------------------------------------------------
#define F_CPU  4000000UL
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#define INT8U   unsigned char
#define INT16U  unsigned int

#define     RED_EW_ON()  PORTC |=  (1<<0);   //东西向指示灯开
#define  YELLOW_EW_ON()  PORTC |=  (1<<1);
#define   GREEN_EW_ON()  PORTC |=  (1<<2);

#define     RED_EW_OFF() PORTC &= ~(1<<0);   //东西向指示灯关
#define  YELLOW_EW_OFF() PORTC &= ~(1<<1);
#define   GREEN_EW_OFF() PORTC &= ~(1<<2);
 
#define     RED_SN_ON()  PORTC |=  (1<<3);   //南北向指示灯开
#define  YELLOW_SN_ON()  PORTC |=  (1<<4);
#define   GREEN_SN_ON()  PORTC |=  (1<<5);

#define     RED_SN_OFF() PORTC &= ~(1<<3);   //南北向指示灯关
#define  YELLOW_SN_OFF() PORTC &= ~(1<<4);
#define   GREEN_SN_OFF() PORTC &= ~(1<<5);

#define   YELLOW_EW_BLINK() PORTC ^= 0x02;   //东西向黄灯闪烁
#define   YELLOW_SN_BLINK() PORTC ^= 0x10;   //南北向黄灯闪烁

#define   BEEP() (PORTB ^= 0x01)            //蜂鸣器

//延时倍数,闪烁次数,操作类型变量
INT8U Time_Count = 0, Flash_Count = 0, Operation_Type = 1;
//------------------------------------------------------------------
// 主程序
//------------------------------------------------------------------
int main() 
{ 


} 

//------------------------------------------------------------------
// 黄灯警报声音输出
//------------------------------------------------------------------
void Yellow_Light_Alarm()
{


}

//-----------------------------------------------------------------
// T1定时器溢出中断服务程序(控制交通指示灯切换显示)
//-----------------------------------------------------------------
ISR (....)
{

}