I have explained the calculations for the timer in my previous post.please have a look . CODE: #include<REGx51.h> sbit sqwave=P2^0; void timer0() interrupt 1 { sqwave=~sqwave; //generating sq wave } void main() { TMOD=0x02; //Timer0 in 8 bit autoreload mode IE=0x82; //enabling intrupt TH0=0x47; //loading the calculated…
Tag: 8051 interrupts
8051 timer Interrupt program to copy data from P0 to P1 ,while simultaneously generating square wave of time period 200 uS at P2^0 .
When it comes to interrupt programming , we have to consider some important registers. For this program the registers used are IE(interrupt enable),TCON(timer control),TMOD(timer mode). In timer interrupt programming calculating the value to be loaded to the timer is very important. Here XTAL frequency i have considered is…
8051 Interrupts: Basics | Types | Programs |Timer interrupts | AT89C51
8051 Interrupts An Interrupt is an external or internal event that halts or interrupts Microcontroller to inform it that a device needs its service. Contents: 1. Basics.2. Steps taken when interrupt occurs. 1. Basics : A microcontroller is able to give service to many Input and…
Interfacing Seven Segment Display on 8051- C Code { Common Anode}
This code is a simple one . Here just a 7 seg display is attached to Port 0 of 8051 micro controller . The values can be calculated easily . One unit of 7 seg display has 7 different leds as its segments and also a dot at the bottom…
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