Skip to main content

LED Blinking with 8051 Microcontroller

#include <reg51.h>

sbit Led0=P1^0;

void delay(unsigned int i)
{
    unsigned int j,k;
    for(j=0;j<=i;j++)
    {
        for(k=0;k<256;k++);
    }
}

void main(void)
{
    P1 = 0xff;

    while(1)
    {
        Led0 = 0;
        delay(5);
        Led0 = 1;
        delay(5);
    }
}


Labels:

Comments

Post a Comment

Popular posts from this blog

P89V51RD2 Interfacing with the UART Serial Communication

P89V51RD2 Interfacing with the UART Serial Communication Description                     Interfacing the UART Serial Communication with the P89v51rd2 Micro controller, with the baud rate of 9600bps. The Source code and Simulator Model of this Communication is listed Below. Source : #include <reg51.h> unsigned char var; unsigned char var1; void Serial_Init() {     TMOD = 0x20;     SCON = 0x50;     TH1  = 0xFD;     TR1   = 1;       } void Transmit_Char(unsigned char x) {     SBUF =  x;     while(!TI)     {     ;        }     TI = 0; } void Transmit_String(unsigned char *s) {     unsigned char i;     while((s[i]) != 0)     {         Transmit_Char(...
6 comments
Read more
P89V51RD2 Interfacing with DS1307 RTC           The DS1307 RTC IC I nterfacing with P89V51RD2 Micro Controller use of the KEIL IDE, and proteus simulator. The source code and thhe screen short of simulator model are attached with this.              This interfacing is done by the I2C Communication between the Micro Controller and DS1307 RTC. Source Code: #include <reg51.h> #include <stdio.h> sbit SCL = 0x90; // SCL for I2C sbit SDA = 0x91; // SDA for I2C volatile unsigned char DS1307_WA=0xD0; volatile unsigned char DS1307_RA=0xD1; unsigned char Rdata; unsigned char sec1,min1,hour1,date1,month1,year1,d,l,m,j,i; unsigned char sec[20],min[2],hour[2],ch1; unsigned char RTCDateTime[15]; unsigned char Buf[20]; void Serial_Init() {     TMOD = 0x20;     SCON = 0x50;     TH1  = 0xFD;  ...
3 comments
Read more

ADC interfacing with 8081

Interfacing the AD0803 to the 8051 micro controller       This is the parallel port connector to the micro controller. The adc reading is transmitted to the serial port. Code: #include <reg51.h> #include <stdio.h> #define     adc_port    P1 sbit     rd = P2^0; sbit    wr = P2^1; sbit    cs = P2^2; sbit    intr = P2^3; //unsigned int adc; float adc1; void serial_init() {     TMOD = 0x20;     SCON = 0x50;     TH1  = 0xFD;     TR1  = 1;     TI   = 1;     RI   = 0;       }                    void delay(unsigned int i) {     unsigned int j,k;     for(j=0;j<=i;j++)     {         for(k=0;k...
1 comment
Read more