PIC18F24K50 IOCB4-IOCB7 interrupt problem

[cllunlu]

Hi Everyone,

I have done IOCC1 and IOCC2 pins interrupt with milan.rajnik is edaboard user. Now I have to use IOCRB4-IOCRB7 pins to interrupt. I edited my code similarly, but program doesnt input interrupt routine. IOCRB4-IOCRB7 interrupts are difference IOCRC1 and IOCRC2.

Anyone could help?

Code is:

sbit W1D0 at RB4_bit;
sbit W1D1 at RB5_bit;

sbit W1D0_Direction at TRISB4_bit;
sbit W1D1_Direction at TRISB5_bit;

sbit LED1 at LATA1_bit;
sbit LED2 at LATA2_bit;

sbit LED1_Direction at TRISA1_bit;
sbit LED2_Direction at TRISA2_bit;

#define INPUT 1
#define OUTPUT 0

#define LOW 0
#define HIGH 1

#define ON 1
#define OFF 0

void init()
{
CM1CON0 = 0x00;
CM2CON0 = 0x00;

ANSELA = 0x00;
ANSELB = 0x00;
ANSELC = 0x00;

TRISA = 0xC0;
TRISB = 0x00;
TRISC = 0x00;

PORTA = 0x00;
PORTB = 0x00;
PORTC = 0x00;

LATA = 0x00;
LATB = 0x00;
LATC = 0x00;

W1D0_Direction = INPUT;
W1D1_Direction = INPUT;

LED1_Direction = OUTPUT;
LED2_Direction = OUTPUT;

LED1 = OFF;
LED2 = OFF;

Delay_ms(200);

IOCIE_bit = 1;
PEIE_bit = 1;
GIE_bit = 1;
IOCB4_bit=1;
IOCB5_bit=1;

IOCIF_bit = 0;

Delay_ms(50);
}
void interrupt(void)
{
IOCIE_bit = 0;
PEIE_bit = 0;

if(IOCIF_bit)
{
IOCIF_bit = 0;

if(!RB4_bit)
{
LED1=1;
}
else if(!RB5_bit)
{
LED2=1;
}
}
}

void main()
{
init();

while(1)
{

}

}

 

[milan.rajik]

How are the switches connected. Post your circuit.

Try attached project. It is compiled for internal 4 MHz oscillator.

 

[cllunlu]

How are the switches connected. Post your circuit.

Try attached project. It is compiled for internal 4 MHz oscillator.

My circuit is

https://obrazki.elektroda.pl/5749164600_1431939457.jpg

Where is my mistake in codes. It is similarly with your codes

 

[milan.rajik]

Did my code work ? The difference is TRISB settings.

 

[cllunlu]

Did my code work ? The difference is TRISB settings.

I will try this night. After that I will give feedback.

Thanks you.

- - - Updated - - -

I will try this night. After that I will give feedback.

Thanks you.

My circuit is right?

 

[milan.rajik]

I only checked the button circuit and they are fine. I didn't check the rest.

 

[cllunlu]

I only checked the button circuit and they are fine. I didn't check the rest.

You can see my circuit about IOCRB4-IOCRB7 interrupt

circuit link is:

https://obrazki.elektroda.pl/5749164600_1431939457.jpg

 

[milan.rajik]

If you have Proteus then draw the circuit in Proteus.

Edit: Soory, there is no PIC18F24K50 in Proteus. It is a new chip. You can try with other chips ?

 

[cllunlu]

Your demo code doesnt work milan.rajnik.I dont understand where is mistakes

 

[milan.rajik]

The code should work fine. See attached image for switch and Led connections. If switch is connected other way then change code like below.

if(RB4_bit) { 
     LED1 = ON;
}
else if(RB5_bit) {
     LED2 = ON;
}

 

[cllunlu]

My cicuit is : https://obrazki.elektroda.pl/5749164600_1431939457.jpg

See all of them always are HIGH. When these pins are Low, Interrupt routine will run. These circuit is wiegand26 data decoder

 

[cllunlu]

The pins are input and they are always HIGH.(The antenna send 5V always when it doesnt send data. When it sends data, It send logically LOW). Jayanth, if you can see my circuit that links is below, You will realize.

 

[milan.rajik]

I understood but I have never worked with Weigand Protocol (comm). Maybe someone else can help you better.


Something related to Weigand here.