5 Responses to “Pic, Atmel, 8051 ÇeÅŸitli Mikrodenetleyici Devreleri”

1. By kaci on Tem 15, 2008 | Reply

   hi,
   i need some help for progamming pic 18f 458 (adc,clr ,quartz),
   thanks

2. By admin on Tem 15, 2008 | Reply

   what kind of help

3. By kaci on Tem 22, 2008 | Reply

   yes,i work with the compilateur ccs

   1.i want the pic18f458 opperates at 40 MHz.what i have to do.

   2.i have 3 analog input (3phase)(3 sinusoide)(ampli 2.5v),

   the adc conversion will be 10bit (5volt;correspond;1024) or

   8bit(5volt;correspond;256)

   what’s the manner to program this

4. By Binu on Tem 25, 2008 | Reply

   Good collection of projects.

5. By kaci on Eyl 2, 2008 | Reply

   hi all,
   in need some hope(oriontatin) in my application.
   my application consist in;
   i have 3 analog input (3 sinusoidal tensions),then i neeed a/d converter
   an0,an1,an3 (10bit conversion) and the 3 result of conversion will be used in calcul(var =fonction(read(1),read(2),read(3…) fonction is(arctan..) )
   i use the pic 18f458(with picc compiler) and i want to obtain a hightspeed intern (40MHZ)
   ,for this i have used 10MHZ with pll enabled

   my progam;
   #include
   #device adc=10
   #fuses hs, NOWDT, NOPROTECT, PUT, BROWNOUT, NOLVP
   #use delay (clock=40000000)
   double result;
   float v1,v2,v3;

   void main(void)
   {
   ld:
   setup_adc_ports(ALL_ANALOG);
   setup_adc(ADC_CLOCK_DIV_32); // utilisation de l’horloge interne pour l’ADC
   set_adc_channel(0); // Lecture sur le canal 0 du port
   result=(double)(read_adc());
   v1 = ( 5.0 * result ) / 1024;
   set_adc_channel(1); // Lecture sur le canal 1 du portA
   delay_us(10);
   result=(double)(read_adc());
   v2 = (5.01 * result) / 1024;
   delay_us(10);
   result=(double)(read_adc());
   v3 = (5.01 * result) / 1024;
   goto ld;
   }

   my questions;
   1.how much time to the ad convertion (convert 3analog input to digital)
   2.what is the faster a/d convertion 8bit or 10bit.and how much for difference.
   3.what the declaration can i use to obtain max internal execution speed (40Mhz)(i use 10MHZ with pll enabled)
   (1).#fuses hs, NOWDT, NOPROTECT, PUT, BROWNOUT, NOLVP
   #use delay (clock=40000000)

   or:
   (2).#fuses hs, NOWDT, NOPROTECT, PUT, BROWNOUT, NOLVP
   #use delay (clock=10000000)
   4.is it necessary to do delay time; (delay_us(10);)

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