INDEX SR NO TITLE SIGN 1 Interfacing of LED, RELAY, Pushbutton 2 Sending and receive data serially to and from PC 3 Using a Watchdog Timer 4 Design a 8 bit Binary counter 5 DC Motor Control using PWM module 6 Interfacing of Temp Sensor 7 Interfacing seven segment Display 8 Scrolling text message on LED dot Matrix
Embedded Systems Journal
Nov 06, 2015
MScIT journal
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INDEX
SR NOTITLESIGN
1Interfacing of LED, RELAY, Pushbutton
2Sending and receive data serially to and from PC
3Using a Watchdog Timer
4Design a 8 bit Binary counter
5DC Motor Control using PWM module
6 Interfacing of Temp Sensor
7Interfacing seven segment Display
8Scrolling text message on LED dot Matrix
Practical no: 1 Interfacing of LED, RELAY, PushbuttonAimWrite a Program to blink an LED using 8051
Theory We now want to flash a LED. It works by turning ON a LED & then turning it OFF & then looping back to START. Figure shows how to interface the LED to microcontroller. The Anode is connected through a resistorto Vcc & the Cathode is connected to the Microcontroller pin. So when the Port Pin isHIGH the LED is OFF& when the Port Pin isLOW the LED is turned ON.
LED Interfacing Program#include MSDelayNew(unsigned int v);void main() // Start of main() function{while(1)// Infinite loop. The program will run forever{
P1 = 0x00;MSDelayNew(50);P1 = 0X01;MSDelayNew(50);}}
MSDelayNew(unsigned int v){unsigned int x, y;
for (x=0;x
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