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Help me control brightness Led using PWM module
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PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Wed Oct 27, 2010 3:51 pm     Reply with quote
I don't have Proteus. I don't know very much about it.
matheuslps



Joined: 29 Sep 2010
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PostPosted: Wed Oct 27, 2010 6:42 pm     Reply with quote
Sure you can simulate with Proteus.

Most of the codes works fine.

bye
alex_ccs



Joined: 27 Oct 2010
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PostPosted: Thu Oct 28, 2010 9:43 am     Reply with quote
Thanks both.
I have simulate on Proteus but nothing happen.
matheuslps



Joined: 29 Sep 2010
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PostPosted: Thu Oct 28, 2010 12:43 pm     Reply with quote
Please post your circuit and your code.

I will simulate it for you.

EDIT:

Done:

Circuit:

http://img7.imageshack.us/img7/6990/adclcd.png

Code:

Code:
#include <16F877A.h>
#device adc=8

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES XT                       //Crystal osc <= 4mhz
#FUSES PUT                      //Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NODEBUG                  //No Debug mode for ICD
#FUSES BROWNOUT                 //Reset when brownout detected
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD                    //No EE protection

#use delay(clock=4000000)

#include <LCD.C>


void main()
{
   int8 q;
   float p;
   
   setup_ccp1(CCP_PWM);


   setup_timer_2(T2_DIV_BY_16, 255, 1);

   setup_adc_ports(AN0);                                   //Analogic channel 0
   setup_adc(ADC_CLOCK_INTERNAL);    //internal clock

   lcd_init();   
   
   set_adc_channel(0);           //enable channel 0
   delay_us(20);
   
   while (TRUE)
   {     
      q = read_adc();                  //read channel 0
      p=0.392*q;
      printf (lcd_putc, "\fADC = %4u \n%4.2f percent", q, p);
      set_pwm1_duty(q);
      delay_ms(100);
   }
}
     
     


bye
alex_ccs



Joined: 27 Oct 2010
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PostPosted: Wed Nov 03, 2010 10:54 am     Reply with quote
Thank you for your help matheuslps.

http://img529.imageshack.us/img529/5412/pwm1.jpg
asmboy



Joined: 20 Nov 2007
Posts: 2128
Location: albany ny

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proteus ....
PostPosted: Thu Jul 21, 2011 3:50 pm     Reply with quote
You can simulate quite a few pic situations with Proteus

But - after having it suggested to me
and trying it exactly ONCE - i will NEVER touch it again.

If you want to know how a program really works - you should make the effort to build the actual hardware and do it for REAL.

Proteus simulated pic code is NOT a basis for a working product that i would ever rely on.
For school class maybe -
but not in the world of designs that HAVE to work.
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