Here is my code, can someone please help me in changing it to were it can run in
ID: 1839823 • Letter: H
Question
Here is my code, can someone please help me in changing it to were it can run in one direction continuously, then by pressing the second button it runs in the other direction. CCW to CW. TYIA
#include /* common defines and macros */
#include "derivative.h" /* derivative-specific definitions */
//Unipolar stepper motor controller
void delay(int x);
unsigned int IN, OUT;
void main(void)
{
/* put your own code here */
DDRC = 0xF0; /*Init PORT C bits 4 - 7 output*/
ATDDIEN = 0x00F0; /*Init bits 4 - 7 PortAD digital inputs*/
PER1AD = 0xF0; /*Enable internal pullups for PAD4 - PAD7*/
for(;;)
{
IN = PT1AD; // Read PortAD;
if (IN == 0xDF) //Is switch 2 closed (logic 0), rotate motor counter clockwise
{
PORTC = 0x80; //CCW
delay(50); //wait
PORTC = 0x40; //
delay(50); //wait
PORTC = 0x20; //
delay(50); //wait
PORTC = 0x10; //
delay(50); //wait
} else if (IN == 0x7F) //Is switch 2 closed (logic 0), rotate motor counter clockwise
{
PORTC = 0x10; //CCW
delay(50); //wait
PORTC = 0x20; //
delay(50); //wait
PORTC = 0x40; //
delay(50); //wait
PORTC = 0x80; //
delay(50); //wait
}
else
PORTC = 0x00; //Turn off MOTOR if button is released (logic 1)
}
}
void delay(int c) //Delay function
{
int d;
for (; c != 0 ; c-- )
for ( d = 1 ; d <= 3270 ; d++ )
{}
}
Explanation / Answer
#include<16F877A.h>
#fuses HS,NOWDT
#use delay(clock=10000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,stream=RS232,bits=8)
void main()
{
while(true){
set_tris_a(0x06);
set_tris_b(0x00);
output_b(0x00);
if(input(PIN_A1) == 0){
int i;
for(i=0; i<6; i++)
{
output_b(0x01); //1 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x02); //2 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x04); //3 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x08); //4 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
}
for(i=0; i<6; i++)
{
output_b(0x04); //3 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x02); //2 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x01); //1 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
output_b(0x08); //4 No. PIN
delay_ms(500);
output_b(0x00);
if(input(PIN_A2) == 0){
goto stop;
}
}
stop: continue;
} //end if
} //end while
} //end main
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