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18f46k22 interrupt no work
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daniel82



Joined: 05 Jan 2011
Posts: 11

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18f46k22 interrupt no work
PostPosted: Wed Jan 05, 2011 3:09 am     Reply with quote
Hi,

I'm 1st time using K series, may I know why interrupt no working on this chip but others chip working fine.
Please help!
Compiler ver 4.109.
Code:

#include <18f46k22.h>
#fuses H4,NOWDT,NOPROTECT,NOLVP,INTRC
#use delay(clock=8Mhz)
#include <string.h>
#include <stdlib.h>

#INT_EXT2
void Ext2_interrupt()         
{
output_high(PIN_D5);
delay_ms(1000);
output_low(PIN_D5);
delay_ms(1000);
}

void main()
{
ENABLE_INTERRUPTS(INT_EXT2);
EXT_INT_EDGE(2, H_TO_L);
ENABLE_INTERRUPTS(GLOBAL);
output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);
delay_ms(1000);

while(1)
{

}

}
}
daniel82



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Posts: 11

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PostPosted: Thu Jan 06, 2011 4:26 am     Reply with quote
Is that compiler problem? anyone can help me?? Sad
PCM programmer



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Posts: 21708

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PostPosted: Thu Jan 06, 2011 2:21 pm     Reply with quote
In your version of the compiler, CCS does not configure PortB as digital
by default. It is analog. That's why it doesn't work for INT_EXT2.
You can fix it by adding the line shown in bold below:
Quote:

void main()
{
setup_adc_ports(NO_ANALOGS);
daniel82



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Posts: 11

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PostPosted: Thu Jan 06, 2011 7:44 pm     Reply with quote
Thanks for your reply, I added the command but still can't trigger the interrupt. What else I can do? I confirm no problem with my circuit.
Code:

#include <18f46k22.h>
#fuses H4,NOWDT,NOPROTECT,NOLVP,INTRC
#use delay(clock=8Mhz)
#include <string.h>
#include <stdlib.h>

#INT_EXT2
void Ext2_interrupt()         
{
output_high(PIN_D5);
delay_ms(1000);
output_low(PIN_D5);
delay_ms(1000);
}

void main()
{
SETUP_ADC_PORTS(NO_ANALOGS);
ENABLE_INTERRUPTS(INT_EXT2);
EXT_INT_EDGE(2, H_TO_L);
ENABLE_INTERRUPTS(GLOBAL);
output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);
delay_ms(1000);

while(1)
{

}

}
}
daniel82



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Posts: 11

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PostPosted: Thu Jan 06, 2011 7:55 pm     Reply with quote
Another test i using interrupt timer it doesn't work also Crying or Very sad

Code:

#include <18f46k22.h>
#fuses H4,NOPROTECT,NOLVP,INTRC
#use delay(clock=8Mhz)


/////////////////////////////////////////////////////////////////////////
// Include files
/////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdlib.h>
INT CTR=0;

#INT_EXT2
void Ext_interrupt()            //Read Sector1 Block0 data, password=8x12
{
               output_high(PIN_D5);
               delay_ms(1000);
               output_low(PIN_D5);
               delay_ms(1000);
}

#INT_TIMER1
void timer1_isr()
{     
   CTR++;
}

void main()
{
setup_timer_1(T1_INTERNAL | T1_DIV_BY_8);
setup_adc_ports(NO_ANALOGS);
ENABLE_INTERRUPTS(INT_EXT2);
EXT_INT_EDGE(2, H_TO_L);
ENABLE_INTERRUPTS(GLOBAL);
output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);
delay_ms(1000);

while(1)
{
if (CTR>5)
   {
   output_high(PIN_D0);
   delay_ms(200);
   output_low(PIN_D0);
   delay_ms(200);
   }

else
   {
   CTR=0;
   }

}
}
PCM programmer



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Posts: 21708

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PostPosted: Thu Jan 06, 2011 7:59 pm     Reply with quote
Does your external circuit look like this ? It needs to look similar to this:
Code:

           +5v
            |
            <
            > 4.7K       
            <         ___  Switch 
To          |        _|_|_
PIC -----------------o   o------
pin                            |             
                              --- GND
                               -   
 

You need a switch that connects to ground, and you need a pull-up
resistor as shown above.

Also, are you testing this on a real hardware board, or in Proteus ?
daniel82



Joined: 05 Jan 2011
Posts: 11

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PostPosted: Thu Jan 06, 2011 10:21 pm     Reply with quote
Yes the design same as yours, the only diff is I used 10kohm. I do measure the PIC pin, when push button pressed, voltage from 5v to 0v.

Another test I try on PICkit 44-pin demo board, it connected INT0 (RB0) with switch, so I change the coding to
Code:

#INT_EXT
void Ext_interrupt()           
{
output_high(PIN_D5);
delay_ms(1000);
output_low(PIN_D5);
delay_ms(1000);
}

void main()
{
setup_adc_ports(NO_ANALOGS);
ENABLE_INTERRUPTS(INT_EXT);
EXT_INT_EDGE(H_TO_L);
ENABLE_INTERRUPTS(GLOBAL);

output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);
delay_ms(1000);

while(1)
{

}
}

Same result I get, on the power PIN_D0 LED will on and off, after that I press button interrupt didn't trigger. I tested with PIN_D5 connection is good no problem.

I write another code test using internal timer1 it can not work also.
Code:

#include <18f46k22.h>
#fuses H4,NOPROTECT,NOLVP,INTRC
#use delay(clock=8Mhz)

/////////////////////////////////////////////////////////////////////////
// Include files
/////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdlib.h>
INT CTR=0;

#INT_EXT
void Ext_interrupt()           
{
output_high(PIN_D5);
delay_ms(1000);
output_low(PIN_D5);
delay_ms(1000);
}

#INT_TIMER1
void timer1_isr()
{     
 CTR++;
}

void main()
{
setup_timer_1(T1_INTERNAL | T1_DIV_BY_8);
setup_adc_ports(NO_ANALOGS);
ENABLE_INTERRUPTS(INT_EXT);
EXT_INT_EDGE(0, H_TO_L);
ENABLE_INTERRUPTS(GLOBAL);

output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);
delay_ms(1000);

while(1)
{
if (CTR>5)
   {
   output_high(PIN_D0);
   delay_ms(200);
   output_low(PIN_D0);
   delay_ms(200);
   }

else
   {
   CTR=0;
   }

}
}
PCM programmer



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Posts: 21708

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PostPosted: Fri Jan 07, 2011 11:44 am     Reply with quote
I think I made a mistake. The setup_adc_ports() function does not work
correctly in vs. 4.109. You can fix the PortB problem as described below:

Try the program shown below. Note that it forces Port B to be a digital
port upon power-up by using the NOPBADEN fuse. Also note that the
'H4' fuse is not needed. Just use INTRC_IO for the 8 MHz internal oscillator.
Quote:

#include <18F46K22.H>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOLVP, NOPBADEN
#use delay(clock=8000000)

#INT_EXT
void ext_isr(void)
{
output_high(PIN_D5);
delay_ms(1000);
output_low(PIN_D5);
}

//=======================
void main()
{

ext_int_edge(L_TO_H);

clear_interrupt(INT_EXT);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);

output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);

while(1);
}
daniel82



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Posts: 11

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PostPosted: Sun Jan 09, 2011 7:27 pm     Reply with quote
Yes it work, thank you very much! Laughing
daniel82



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PostPosted: Sun Jan 09, 2011 9:25 pm     Reply with quote
Another question Sad

Now the problem from UART, the program run until blink the LED_C1 only, I can't get the msg "Send". What's wrong is that? I had read others ppl issue here same like me, but they haven't solve yet.
Code:

#include <18f46K22.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOLVP, NOPBADEN
#use delay(clock=32MHz)
#use RS232 (baud=19200, xmit=PIN_D6, rcv=PIN_D7, STREAM=COM1)

void main()
{
ext_int_edge(L_TO_H);
clear_interrupt(INT_EXT);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);

output_high(PIN_C1);
delay_ms(500);
output_low(PIN_C1);

fprintf(COM1,"\n\rSend");

output_high(PIN_C0);
delay_ms(500);
output_low(PIN_C0);

while(1);
{

}
} 
PCM programmer



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Posts: 21708

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PostPosted: Sun Jan 09, 2011 10:04 pm     Reply with quote
Add the "make_all_pins_digital()" function and call it at the start of your
program, as shown in the link below:
http://www.ccsinfo.com/forum/viewtopic.php?t=43961&start=6
daniel82



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PostPosted: Mon Jan 10, 2011 2:16 am     Reply with quote
I have tested several time, still can't work, after the interrupt triggering, LED_D1 blink twice, but I didn't receive the msg "testing...".
Code:

#include <18f46K22.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOLVP
#use delay(clock=32MHz)
#use RS232(baud=19200, xmit=PIN_D6, rcv=PIN_D7, STREAM = COM1)

/////////////////////////////////////////////////////////////////////////
// Include files
/////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdlib.h>

void make_all_pins_digital(void)
{
#byte ANSELA = 0xF38
#byte ANSELB = 0xF39
#byte ANSELC = 0xF3A
#byte ANSELD = 0xF3B
#byte ANSELE = 0xF3C

ANSELA = 0;
ANSELB = 0;
ANSELC = 0;
ANSELD = 0;
ANSELE = 0;
}

INT CTR=0;

#INT_EXT
void Ext_interrupt()           
{
output_high(PIN_D1);
delay_ms(1000);
output_low(PIN_D1);

printf(COM1, "testing...");

output_high(PIN_D1);
delay_ms(500);
output_low(PIN_D1);
delay_ms(500);
}

#INT_RDA
void rx_isr()
{
output_high(PIN_D2);
delay_ms(500);
output_low(PIN_D2);
delay_ms(500);
}

void main()
{
make_all_pins_digital();
ext_int_edge(0, H_TO_L);
clear_interrupt(INT_EXT);
enable_interrupts(INT_EXT);
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);

output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);

while(1);
{


}
}
PCM programmer



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Posts: 21708

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PostPosted: Mon Jan 10, 2011 1:33 pm     Reply with quote
You have to get the character inside the isr, to clear the int_rda interrupt.
You have call getc() or fgetc(). Example:
Quote:

#INT_RDA
void rx_isr()
{
char c;

c = fgetc(COM1);
}


#int_rda is only generated if you use the hardware UART, which is on
pins C6 and C7. Edit your #use rs232() statement as shown below to
add them. Also, if you put large delays inside the #int_rda routine (which
is not normally done), you must have the ERRORS directive in the #use
rs232() statement. In fact you should always put ERRORS in there, as
shown below:
Quote:

#use RS232(baud=19200, xmit=PIN_C6, rcv=PIN_C7, STREAM = COM1, ERRORS)
daniel82



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PostPosted: Mon Jan 10, 2011 8:32 pm     Reply with quote
i follow your instruction tested it work for:

Code:
#use RS232(baud=19200, xmit=PIN_C6, rcv=PIN_C7, STREAM = COM1, ERRORS)


but i reserve PIN_C6 and PIN_C7 for RS485.
so i edit PIN_C6 to PIN_D6 and PIN_C7 to PIN_D7. but it cant work.

Code:
#include <18f46K22.h>
#fuses INTRC_IO, NOWDT, BROWNOUT, PUT, NOLVP,NOPBADEN
#use delay(clock=32MHz)
#use RS232(baud=9600, xmit=PIN_D6, rcv=PIN_D7, STREAM = COM1,ERRORS)
/////////////////////////////////////////////////////////////////////////
// Include files
/////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdlib.h>

void make_all_pins_digital(void)
{
#byte ANSELA = 0xF38
#byte ANSELB = 0xF39
#byte ANSELC = 0xF3A
#byte ANSELD = 0xF3B
#byte ANSELE = 0xF3C

ANSELA = 0;
ANSELB = 0;
ANSELC = 0;
ANSELD = 0;
ANSELE = 0;
}


#INT_EXT
void Ext_interrupt()           
{
fprintf(COM1, "testing...");

output_high(PIN_D1);
delay_ms(500);
output_low(PIN_D1);
delay_ms(500);
}

#INT_RDA2
void rx_isr()
{
char c;

c = fgetc(COM1);
}

void main()
{
make_all_pins_digital();
ext_int_edge(0, H_TO_L);
clear_interrupt(INT_EXT);
enable_interrupts(INT_EXT);
enable_interrupts(INT_RDA2);
enable_interrupts(GLOBAL);

output_high(PIN_D0);
delay_ms(1000);
output_low(PIN_D0);

while(1);
{


}
}
PCM programmer



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Posts: 21708

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PostPosted: Tue Jan 11, 2011 11:26 am     Reply with quote
Version 4.109 has a lot of bugs with the 18F46K22 and 18F45K22.

I tested using the 2nd UART with vs. 4.116 and it works.
In the test program shown below, I get the following output:
Quote:

Hi there
asdfasdfasdf

I just typed "asdf" a few times on the keyboard and it echoes the
characters correctly, so it's working.

Remember, this is with vs. 4.116. You are using vs. 4.109.
Code:

#include <18F45K22.h>
#fuses INTRC_IO,NOWDT,PUT,NOBROWNOUT,NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_D6, rcv=PIN_D7, ERRORS, stream=COM2)

#int_rda2
void rda2_isr(void)
{
char c;

c = fgetc(COM2);

fputc(c, COM2);
}

//======================================
void main(void)
{

fprintf(COM2, "Hi there\n\r");

enable_interrupts(INT_RDA2);
enable_interrupts(GLOBAL);

while(1);
}


Is there anyway you can upgrade to vs. 4.116 ? I think all your RS232
problems with the 18F46K22 would go away.

If you can't upgrade, I can look at the problem in vs. 4.109 and try to
come up with a solution. But it would be easier if you upgraded.
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