• External Interrupts
    Hello Friends I am using external interrupts and 2 ports for I/O purposes . I want to know that if i use external interrupts then how i come to know that on which port I/O operation is performed and...
  • 8051 interrupts
    I am trying to generate an interrupt when a byte is received via the serial port of an Atmel AT89C51. I am not having much luck. Here is my code: #include <reg51.h> #include <CTYPE.H> #include <STDIO...
  • Interrupts on 8051
    I am A student and I need to design A 8051 program that uses the serial interrupt by using uart it is only a simulation , according to my book it is interrupt 4 but when I send something to trigger the...
  • pls help...external interrupts 8051
    i have used both the external interrupts ex0 and ex1 in the low level triggered mode. whenever either interrupt occurs, the LED on the output port is switched on, depending upon the input at pin P3.2...
  • using external interrupt
    Hi I am using ultra sonic sensors to detect any obstacle and i have connected their response to extenal interrupt0 of 8051. The problem is the sensors are very sensitive they trigger the interrupt even...