How to generate PPM signal?

Discussion in 'Embedded Systems and Microcontrollers' started by krish1986, Jun 12, 2009.

  1. krish1986

    Thread Starter New Member

    Jun 12, 2009
    8
    0
    hi ....
    I wanna generate a Pulse Position modulated Signal having the pulse width of 0.5 micro sec.
    I treid by using a 22.4 MHz crystal..but i aint get the output...

    plz help me in solving the problem..if u have any solution or code ,mail me at <snip>
     
    Last edited by a moderator: Jun 12, 2009
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    Simply using a crystal is not quite enough to obtain a PPM signal. Are you using any other hardware? Can you post up a circuit?
     
  3. krish1986

    Thread Starter New Member

    Jun 12, 2009
    8
    0
    hi..
    i am trying to generate the signal by using c8051 micro controller....having a crystal frequency of 22.4 MHZ ..i wrote the C code..but i got output with 1 micro sec pulse width...
    In the code i used the IRS(interrupt service routine) also to increase the delay...

    help me ....
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
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