Realizing the 8-LED Flowing Light Effect in a Single Chip Microcomputer-EEWORLD

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Left shift function _crol_(x,y) and array implementation

#include

#define uint unsigned int

#define uchar unsigned char

uchar temp;/*The variable type and the assigned value should be consistent. Port P1 is an 8-bit register, so uchar*/

void delay(uint);

void main()

{

temp=0XFE;

P1=temp;

while(1)

{

temp=_crol_(temp,1); //circular shift left

delay(300);

P1=temp;

}

void delay(uint z)

{

uint x,y;

for(x=100;x>0;x--)

for(y=z;y>0;y--);

}

```

// Array implementation

```

#include

#define uint unsigned int

#define uchar unsigned char

uchar i;

uchar table[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

void delay(uint z)

{

uint x,y;

for(x=100;x>0;x--)

for(y=z;y>0;y--);

}

void main()

{

while(1)

{

for(i=0;i<8;i++)

{

P1=table[i];

delay(300);

}

Reference address：Realizing the 8-LED Flowing Light Effect in a Single Chip Microcomputer

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