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pic control stepper motor

 
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help please
Guest
pic control stepper motor
PostPosted: Mon Sep 22, 2008 4:28 am     Reply with quote
Hello, I need some help.
I am still writing on the source code to connect the stepper motor and ULN2803 with the pic 16f877.
I try to show a motor rotate front, back, left, right and stop with five switch.

The following is my code. Could you tell me where is the problem?

Code:

/********************************************
*File    :joe4.c
*Purpose :Led Blinker
*Author  :Tammanoon Luangoon
*********************************************/
#define _PIC16f877_

#ifdef _PIC16F877_
#include <16F877.h>
#define TxD    PIN_C6
#define RxD    PIN_C7
#define CLOCK_SP 20000000

#else
#include <16F628.h>
#define TxD    PIN_A2
#define TxD    PIN_A3
#define CLOCK_SP 4000000

#endif

#fuses   HS
#fuses   NOLVP, NOWDT
#fuses   NOPROTECT
#use delay (clock=CLOCK_SP)


//#define    delay_ms(x)


#define LED     PIN_D0
#define LED1    PIN_D1
#define LED2    PIN_D2
#define LED3    PIN_D3
#define LED4    PIN_D4
#define LED5    PIN_D5
#define LED6    PIN_D6
#define LED7    PIN_D7

#byte port_d=8

///////////////////////////////////////////
/*****************************************
Rotate Right at Motor1
*****************************************/
void Rotate_Front(void){
  set_tris_b(0xFF);
   while(TRUE){
  if(!input(PIN_B2)){
 port_d = 0x00 ;
 delay_ms(1000);
 break;

  }else{
 
   output_high(LED);
   delay_ms(60);
   output_high(LED1);
    output_high(LED);
   delay_ms(60);
    output_low(LED);
   output_high(LED1);
     delay_ms(60);
      output_high(LED2);
    output_high(LED1);
   delay_ms(60);
     output_high(LED2);
     output_low(LED1);
     delay_ms(60);
      output_high(LED2);
       output_high(LED3);
   delay_ms(60);
   output_low(LED2);
    output_high(LED3);
     delay_ms(60);
      output_high(LED3);
      output_high(LED);
   delay_ms(60);
   output_low(LED3);
 
  }
   }
}

/*****************************************
Rotate Lift at Motor1
*****************************************/
void Rotate_Back (void){
   
   while(TRUE){
   if(!input(PIN_B1)){
 port_d = 0x00 ;
 delay_ms(1000);
 break;

  }else{
 
   output_high(LED3);
   delay_ms(60);
   output_high(LED2);
    output_high(LED3);
   delay_ms(60);
    output_low(LED3);
   output_high(LED2);
     delay_ms(60);
      output_high(LED2);
    output_high(LED1);
   delay_ms(60);
     output_high(LED1);
     output_low(LED2);
     delay_ms(60);
      output_high(LED1);
       output_high(LED);
   delay_ms(60);
   output_low(LED1);
    output_high(LED);
     delay_ms(60);
      output_high(LED);
      output_high(LED3);
   delay_ms(60);
   output_low(LED);
   
  }
   }
}
/*****************************************
Rotate_Right at Motor2
*****************************************/
void Rotate_Righ(void){
   while(TRUE){
   if(!input(PIN_B5)){
 port_d = 0x00 ;
 delay_ms(1000);
 break;

  }else{
   output_high(LED4);
   delay_ms(60);
   output_high(LED5);
    output_high(LED4);
   delay_ms(60);
    output_low(LED4);
   output_high(LED5);
     delay_ms(60);
      output_high(LED6);
    output_high(LED5);
   delay_ms(60);
     output_high(LED6);
     output_low(LED5);
     delay_ms(60);
      output_high(LED6);
       output_high(LED7);
   delay_ms(60);
   output_low(LED6);
    output_high(LED7);
     delay_ms(60);
      output_high(LED7);
      output_high(LED4);
   delay_ms(60);
   output_low(LED7);
  }
   }
}
/*****************************************
Rotate Lift at Motor2
*****************************************/
void Rotate_Lift (void){
   while(TRUE){
   if(!input(PIN_B4)){
 port_d = 0x00 ;
 delay_ms(1000);
 break;

  }else{
   output_high(LED7);
   delay_ms(60);
   output_high(LED6);
    output_high(LED7);
   delay_ms(60);
    output_low(LED7);
   output_high(LED6);
     delay_ms(60);
      output_high(LED6);
    output_high(LED5);
   delay_ms(60);
     output_high(LED5);
     output_low(LED6);
     delay_ms(60);
      output_high(LED5);
       output_high(LED4);
   delay_ms(60);
   output_low(LED5);
    output_high(LED4);
     delay_ms(60);
      output_high(LED4);
      output_high(LED7);
   delay_ms(60);
   output_low(LED4);
  }
   }
}
/*****************************************
Stop at Motor
*****************************************/
void LedOff (void){
   int bit_chk=FALSE;
   set_tris_b(0x00);
   while(TRUE){
   if(!input(pin_B3)) bit_chk=FALSE;
       if(bit_chk) {
       port_d = 0x00 ;
       delay_ms(1000);
   break;
   
    }else{   
   output_low(PIN_D0);
   output_low(PIN_D1);
   output_low(PIN_D2);
   output_low(PIN_D3);
   output_low(PIN_D4);
   output_low(PIN_D5);
   output_low(PIN_D6);
   output_low(PIN_D7);
   
   delay_ms(60);
}
   }
}

/***************************************
Funtion : main
***************************************/
void main (void){
 
   set_tris_b(0x00);
 
  while(TRUE){
  if(!input(PIN_B1)){
  Rotate_Front();
  }
  if(!input(PIN_B2)){
  Rotate_Back();
  }
  if(!input(pin_B3)) {
  LedOff();
  }
  if(!input(PIN_B4)){
  Rotate_Righ();
  }
  if(!input(PIN_B5)){
   Rotate_Lift();
  }
  delay_ms(60);
 
  }
}


And my picture simulation
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Mon Sep 22, 2008 11:31 am     Reply with quote
Quote:
set_tris_b(0xFF);
set_tris_b(0x00);

1. Get rid of all the set_tris statements. Let the compiler set the TRIS
for you. If you use the CCS i/o functions, such as output_low(), etc.,
the compiler will set the correct TRIS before it sets the i/o pin to a low
level.


Quote:
#byte port_d=8
port_d = 0x00 ;

2. Get rid of direct writing to i/o Port registers. Use the CCS functions.
Then the compiler will also set the correct TRIS for you. Do it this way:
Code:
output_d(0x00);



Quote:
output_low(PIN_D0);
output_low(PIN_D1);
output_low(PIN_D2);
output_low(PIN_D3);
output_low(PIN_D4);
output_low(PIN_D5);
output_low(PIN_D6);
output_low(PIN_D7);

3. Don't use 8 statements to do this. Use one statement:
Code:
output_d(0x00);
Guest
PostPosted: Wed Sep 24, 2008 8:51 am     Reply with quote
Your Main function does not loop back.. the compiler adds a sleep() function at the end unless you tell the program to keep executing.
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Wed Sep 24, 2008 9:35 am     Reply with quote
Anonymous wrote:
Your Main function does not loop back.. the compiler adds a sleep() function at the end unless you tell the program to keep executing.
The code layout is messed up but there is a while(TRUE), so his Main does never end.
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