Embedded Code and Circuit for Blinking 8 LEDs

Here I am using 8 LEDs which are connected to Port 1 of microcontroller.

I am using 8051 microcontroller - AT89C52 with crystal frequency of 11.0592 MHz.

We design our circuit in Proteus ISIS first and then write the code in Keil uvision.

Code:

#include<reg51.h>

void delay(int a);  // function declaration

// main function

void main(){

while(1){

P1=0x01;

delay(30000);

while(P1){

P1 = P1<<1;  // bitwise operation left shift along 1-bits

delay(30000);

}

}

}

void delay(int a){

int i;

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

}

Circuit:


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A Simple LED Blinking using Keil uvision and Proteus

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Here I am using a single LED which is connected to Port 1 of microcontroller. I am using 8051 microcontroller - AT89C52 with crystal frequency of 11.0592 MHz. First let us design our circuit in Proteus ISIS and then we will go for our code to the microcontroller in Keil uvision. Code: #include<reg51.h> sbit x = P1^0; // function declarations void init(void); // initialization void delay(int a); // delay // main function void main(void){ init(); // init function call while(1){ x = 0; delay(30000);                     x = 1; delay(30000); } } void init(void){ P1 = 0x00;  // initializing Port 1 pins to 0 } void delay(int a){ int i; for(i=0; i<a; i++); } Circuit:
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