PIC18F4620 Multi-Coin Slot Interfacing - Need Help

[emerhidalgo]

Good Morning Sir/Madam

I need some help with regards to this... Kindly help me please...

I made a counter program and circuit for the multi-coinslot with the following objectives

1. Count the pulse the output pulse of the coinslot

this was the schematic that I made which was now in an actual simulator



Here's the code written in MikroC Pro:

void main() {
  int counter = 0;
     //ADCON1 |= 1;
      //CMCON |= 7;
  TRISB = 0;
  PORTB = 0;
  while(1){
  if (PORTB.F2 == 1){
  counter++;
               if (counter==1){
               PORTB.F0 = 1;
               delay_ms(5000);
               }
               else if (counter>=2){
               PORTB.F1 = 1;
               delay_ms(5000);
               }
               delay_ms(5);
               
  }
}
}

The code objective was to turn on a LED whenever the counter increments itself by using the trigger PORTB.F2
On my assumption it will turn ON PORTB.F2 at a very fast time interval so I wrote this code just to see if it will works but unfortunately it doesn't

Am I missing something important?

Here's the document of the multi-coinslot that I used.
**broken link removed**

Here's the part list
- PIC18F4620
- Multi-Coin Slot Model: 623
- Crystal Oscillator 20MGHz

 

[taroot]

Try to read port status in Interrupt. You will get correct result.

 

[emerhidalgo]

Thanks taroot I will try that and revert back to you asap...

 

[emerhidalgo]

Thanks dude, I'm a little confused about the logic...

I think I should use an Interrupt for this one coz I don't think that I can read the pulse by using the above code.

This is my new code.

int cnt;
void interrupt() {
if (TMR1IF_bit) {
cnt++; // Increment value of cnt on every interrupt
TMR1IF_bit = 0; // clear TMR1IF
}
if (cnt ==1){
PORTB.F0 = 1;
delay_ms(50);
}
if (cnt==2){
PORTB.F1 = 1;
delay_ms(50);
}
if (cnt==3){
PORTB.F0 = 0;
delay_ms(50);
PORTB.F1 = 0;
delay_ms(50);
cnt = 0;
}
}


void main() {
ADCON1 |= 0x0F;
CMCON |= 7;
T1CON = 0X0F;
INTCON = 0XC0;
PIE1 = 0X01;

TRISB = 0;
PORTB = 0;
{
}
}

I put the counter pin of the multicoinslot to RX pin of the MCU...
I managed to get a blinking led result. F0 = 1 F1 = 1 F0 and F1 = 0, but I haven't inserted a coin yet. Jeez! Im so confused..

btw can you read interrupt in PORTB.F2?

 

[taroot]

Use External interrupt (PORTB) to count the coin pulse. when you insert a coin you will get interrupt and use counter with it.

void interrupt() {

if(INT0IF_bit) { // Rising Edge
INT0IF_bit = 0;
counter++;
}

 

[emerhidalgo]

Thanks for helping us out taroot... I really appreciate your help... but unfortunately I can't try that solution right now... I'm working on a different project this week... I'll let you know if the solution works when I'm done Thanks a lot dude.