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C language water lamp program based on 51 single chip microcomputer

Publisher:keiss2018Latest update time:2016-01-19 Source: eefocus Reading articles on mobile phones Scan QR code
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#include   //51 series MCU definition file

#define uchar unsigned char //define unsigned character
#define uint unsigned int //define unsigned integer


void delay(uint);   //Declare delay function
void main()
{
 uint i;
 uchar temp;
 
 while(1)
 {
    temp=0x01;
    for(i=0;i<8;i++) //8 running lights flash one by one
    {
      P2=~temp;
      delay(500);   //Call delay function
      temp<<=1;
    }
 temp=0x80;
 for(i=0;i<8;i++) //8 running lights flash one by one in reverse direction
   {
     P2=~temp;
     delay(500);   //Call delay function
     temp>>=1;
   }
    temp=0xFE;
 for(i=0;i<8;i++) //8 running lights light up one by one
    {
      P2=temp;
      delay(500);   //Call delay function
      temp<<=1;
    }
   temp=0x7F;
   for(i=0;i<8;i++) //8 running lights light up one by one in reverse direction
    {
      P2=temp;
      delay(500);   //Call delay function
      temp>>=1;
    }
 }

}


void delay(uint a)  //delay function, millisecond level
{
 uint i;
 while(--a!=0)   //Execute an empty operation loop, where a is a parameter, and the value is provided by the function statement that calls the function
 {
  for(i=0;i<125;i++);//Execute when 0 is added to 125, it will take about 1ms
 }
}

Reference address：C language water lamp program based on 51 single chip microcomputer

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