Dot Matrix (8x8)

http://isisproteus.blogspot.kr/2012/09/isis-proteus.html#!/2012/09/isis-proteus.html

사용하는 부품(=parts)

PIC16F84A

4009 NOT Gate (8개)

74LS138

4520 (8개) = 1개의 Module

총 5개의 Module = 8x5 = 40개 이용

P_Matrix.c

Open this C source in PCWHD

Experimentation

실제 구동

To check Bill of Material(=BOM), select the icon on toolbar in "$" symbol.

If you used some mudules in the circuit sheet,

you have to hit Ctrl+C & Ctrl+X to get into the modules to seek parts hidden under the modules.

(thay don't come up on the BOM, so you need to make an effort.)

만약 모듈화시켜서 회로를 꾸몄다면, Ctrl+C혹은 Ctrl+X를 눌러가며 일일이 찾는 수고를 해야한다.

왜냐하면 부품들이 BOM상에 나타나있지 않기때문이다.

Let's build a Dot Matrix based on parallel style.

Syntax & Functions

문법 & 함수

http://www.ccsinfo.com/content.php?page=syntax-functions

ccs_c_manual.pdf

▼예제들 포함된 사이트

http://www.ccsinfo.com/content.php?page=compexamples

PCM (supports most PIC12 and PIC16 devices):

PCD (supports PIC24/dsPIC^® DSC families):

간단한 학교 프로젝트의 경우는 PCM계열의 칩으로 마무리할 수 있다.

▼예제를 통해 CCSC 만의 문법이 어떻게 차이가 있는지 살펴보자.

문법공부를 따로하기 보다는 해당 예제를 통해 익히는게 효율적이다.

#include <16c74.h>                                    //칩 선언
#fuses HS,NOWDT,NOPROTECT                             //Freq. WDT, Code Protection 선언
#use delay(clock=20000000)                            //20MHz사용
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)  // Jumpers: 8 to 11, 7 to 12

#include <input.c>

#byte port_b = 6

#define FOUR_PHASE TRUE

#ifdef FOUR_PHASE

byte const POSITIONS[4] = {0b0101,
                           0b1001,
                           0b1010,
                           0b0110};
#else
byte const POSITIONS[8] = {0b0101,
                           0b0001,
                           0b1001,
                           0b1000,
                           0b1010,
                           0b0010,
                           0b0110,
                           0b0100};
#endif


drive_stepper(BYTE speed, char dir, BYTE steps) {
   static BYTE stepper_state = 0;
   BYTE i;

   for(i=0; i<steps; ++i) {
      delay_ms(speed);
      set_tris_b(0xf0);
      port_b = POSITIONS[ stepper_state ];
      if(dir!='R')
         stepper_state=(stepper_state+1)&(sizeof(POSITIONS)-1);
      else
         stepper_state=(stepper_state-1)&(sizeof(POSITIONS)-1);
   }
}



use_pot() {
   BYTE value;

   setup_adc(adc_clock_internal);
   set_adc_channel( 1 );
   printf("rn");

   while( TRUE ) {
      value=read_adc();
      printf("%2Xr",value);
      if(value<0x80)
         drive_stepper(value,'R',8);
      else if(value>0x80)
         drive_stepper(128-(value-128),'F',8);
   }

}


use_switch(BYTE speed, char dir) {

   BYTE steps;

   printf("nrSteps per press: ");
   steps = gethex();

   while(true) {
      while(input(PIN_B7)) ;
      drive_stepper(speed,dir,steps);
      while(!input(PIN_B7)) ;
      delay_ms(100);
   }
}


main() {

   byte speed,steps;
   char dir;

   setup_port_a(RA0_RA1_ANALOG);

   while (TRUE) {
       printf("nrSpeed (hex): ");
       speed = gethex();

       if(speed==0)
          use_pot();

       printf("nrDirection (F,R): ");
       dir=getc()|0x20;
       putc(dir);

       printf("nrSteps (hex): ");
       steps = gethex();

       if(steps==0)
          use_switch(speed,dir);

       drive_stepper(speed,dir,steps);
   }

}

Simple A/D
/////////////////////////////////////////////////////////////////////////
////                          EX_ADMM.C                              ////
////                                                                 ////
////  This program displays the min and max of 30 A/D samples over   ////
////  the RS-232 interface.  The process is repeated forever.        ////
////                                                                 ////
////  Configure the CCS prototype card as follows:                   ////
////      Insert jumpers from: 11 to 17, 12 to 18 and 9 to 16        ////
////      Use the #9 POT to vary the voltage.                        ////
/////////////////////////////////////////////////////////////////////////
#include <16f877a.h>
#fuses HS,NOLVP,NOWDT,PUT                    //HighSpeed, No Low Voltage Prgming, Power Up Timer
#use delay(clock=20000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)

void main() 
{
   int i, value, min, max;
   
   printf("Sampling:");
   
   setup_adc_ports( RA0_ANALOG );
   setup_adc( ADC_CLOCK_INTERNAL );
   set_adc_channel( 0 );
   
   do 
   {                       //Takes 30 samples from pin A0
      min = 255;              //and displays the min and max
      max = 0;                //values for that 100ms period
      for(i = 0; i <= 30; ++i) 
  {
         delay_ms(100);
         value = read_adc();
         if(value < min)
            min = value;
         if(value > max)
            max = value;
   }
   printf("nrMin:%x MAX: %x", min, max);
} while (TRUE);
}

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