MCU C language programming: LED simulated traffic light

/* Name: LED simulated traffic light

Note: The east-west direction green light is on for a few seconds, the yellow

The light flashes 5 times and then turns red.

The northbound traffic light changes from red to green, and after a few seconds the northbound

The yellow light flashes 5 times and then turns red.

Green light, repeat.

*/

#include

#define uchar unsigned char

#define uint unsigned int

sbit RED_A=P0^0; //East-West direction light

sbit YELLOW_A=P0^1;

sbit GREEN_A=P0^2;

sbit RED_B=P0^3; //North-South lights

sbit YELLOW_B=P0^4;

sbit GREEN_B=P0^5;

uchar Flash_Count=0,Operation_Type=1; //Number of flashes, operation type variable

//Delay

void DelayMS(uint x)

{

uchar i;

}

while(x--) for(i=0;i<120;i++);

//Traffic light switching

void Traffic_Light()

{

switch(Operation_Type)

{

case 1: //The east-west direction is green and the north-south direction is red

RED_A=1;YELLOW_A=1;GREEN_A=0;

RED_B=0;YELLOW_B=1;GREEN_B=1;

DelayMS(2000);

Operation_Type=2;

break;

case 2: //The yellow light flashes in the east-west direction, and the green light is off

DelayMS(300);

YELLOW_A=~YELLOW_A;GREEN_A=1;

if(++Flash_Count!=10) return; // Flash 5 times

Flash_Count=0;

Operation_Type=3;

break; [page]

case 3: //The east-west direction is red, and the north-south direction is green

RED_A=0;YELLOW_A=1;GREEN_A=1;

RED_B=1;YELLOW_B=1;GREEN_B=0;

DelayMS(2000);

Operation_Type=4;

break;

Case 4: //The yellow light flashes 5 times in the north-south direction

DelayMS(300);

YELLOW_B=~YELLOW_B;GREEN_B=1;

if(++Flash_Count!=10) return;

Flash_Count=0;

Operation_Type=1;

}

}

//Main program

void main()

{

while(1)Traffic_Light();

}