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Recent content by kel

  1. K

    Pic16f87xx timer stack overflow

    Thanks, MUKESH.K.S. I've placed "return' opcode on every single modules/functions. So that might not be the problem. The INTCON<GIE> is cleared within the module being called by the interrupt. I think I will have to move to the interrupt as per your suggestion and see if that fixes the...
  2. K

    Pic16f87xx timer stack overflow

    Friends, TMR1 is currently giving me issues. The timer is free running. My MCU clock frequency is 20MHz. As you would see in the code section, I'm simply reading the timer registers (TMR1H:TMR1L) and display the values on PORTB and PORTD. However, when I run the simulation in Proteus, I get the...
  3. K

    Solar PV cell model simulation in proteus

    Gentlemen, I need your help. I'm trying to make a pv cell model to charge a capacitor in my simulation in Proteus ISIS. I have made model attached, but the current and voltage at the output are inverted (i.e. negative). I have searched the web for a functioning model or proper explanation...
  4. K

    8x8 dot Matrix not displaying proper message

    Gents, I finally got something happening on my display. However, how do I rotate message on a 16x8 dot matrix so it is scrolled from left to right or vice versa? I'm simulating my work using proteus. A sample of my c code and schematic are as attached. Please note that I intentionally left out...
  5. K

    8x8 dot Matrix not displaying proper message

    Gents, Can anyone sends me or post a simple code in c (ccs c preferably) that I may test for 74HC595 and pic16f877A. My code as above is not currently working and I'm almost giving up. Appreciate your help in advance. :oops:
  6. K

    8x8 dot Matrix not displaying proper message

    Gentlemen, I'm having problem displaying message on my 8x8 dot matrix display. I've modified a small c code rewriting it in C using CCS C compiler. In as far as my hardware is concern, I'm using a pic16f877a, a 74HC595, NPN transistors and a CD4017.As you would note in code, the serial data pin...
  7. K

    Looking for an e-book about CCS C

    e-Book required. Hello Curgan?I read one of your response posted stating that you have got an e-book on CCS C..My email address is: **broken link removed**, could you please email it to me also.I'm a beginner to pic especially c programming. Cheers mate. kel

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