Instant Interrupts - Revisited

**reik6149** · - 13th September 2010, 04:29

hi all, i face a problem here.

why when im trying to compile the dt_ints-18 file without changing anything, it shows

Error[113] c:\picbas~1.47\pbppic18.lib 1170 : symbol not previously defined (int_entry_H)

im using 18f2680

**Ioannis** · - 13th September 2010, 07:36

I suppose you did commend the 4 lines starting with __CONFIG in the xxx.inc file inside your PBP directory, right?

Ioannis

**reik6149** · - 13th September 2010, 08:00

huh?? do you means 18f2680.inc ? but i dint change anything with it..below is the inc file

;************************************************* ***************
;* 18F2680.INC *
;* *
;* By : Leonard Zerman, Jeff Schmoyer *
;* Notice : Copyright (c) 2006 microEngineering Labs, Inc. *
;* All Rights Reserved *
;* Date : 06/05/06 *
;* Version : 2.47 *
;* Notes : *
;************************************************* ***************
NOLIST
ifdef PM_USED
LIST
"Error: PM does not support this device. Use MPASM."
NOLIST
else
LIST
LIST p = 18F2680, r = dec, w = -311, w = -230, f = inhx32
INCLUDE "P18F2680.INC" ; MPASM Header
__CONFIG _CONFIG1H, _OSC_XT_1H
__CONFIG _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
__CONFIG _CONFIG3H, _MCLRE_ON_3H & _PBADEN_OFF_3H
__CONFIG _CONFIG4L, _XINST_OFF_4L & _LVP_OFF_4L
NOLIST
endif
LIST
EEPROM_START EQU 0F00000h
BLOCK_SIZE EQU 64

**ScaleRobotics** · - 13th November 2010, 20:43

That is awesome, just opened a ton of possibilities with the speed of ASM, and the ease of DT_INTS and N-Bit Math. Thanks Darrel!

**HankMcSpank** · - 21st November 2010, 02:03

Just a quickie, re IOC interrupts....how do I know which one to use? (previously I was using IOC with a 16f690 & used RABC_INT then, but the PIC I'm using now doesn't have a PORT B)

From DT's site...

Several new interrupt sources have been added in version 1.00. GPC_INT, IOC_INT, RAC_INT, RABC_INT and the original RBC_INT are all forms of Port Change Interrupts. The chip being programmed determines which one you need to use.

Where do I look to establish this info?

I'm using one of the newer 14 pin 16F1823 PICs.

**Darrel Taylor** · - 21st November 2010, 02:25

The key is to look in the INTCON register.

For the 16F690, INTCON.0 is RABIF. So you would use RABC_INT.

With the 16F1823, INTCON.0 is IOCIF, so it's IOC_INT.

I could probably make it so IOC_INT works for all of them.

They are all "Interrupt On Change".

**HankMcSpank** · - 21st November 2010, 17:08

Many thanks Darrel.

I have a problemetette - my program runs fine, but then when I press a switch (to generate an IOC), an interrupt *is* triggered, but it then seems to loop in my interrupt handler (it's actually becuase the INTCON.0 bit seems to be staying at 1, which keeps it jumping to the interrupt handler constantly)

Any ideas, why the IOC_FLAG = 0 entry towards the end of the interrupt handler doesn't appear to be taking affect?

Code:

IOC_FLAG VAR INTCON.0 ' Alias RABIF interrupt flag bit
debug_out var byte
SW1    VAR PORTA.5
on_status var byte
Green_LED VAR PortC.1 

ASM
INT_LIST  macro ; IntSource,    Label,         Type, ResetFlag?
    INT_Handler  IOC_INT,  _Switch_Interrupt,  PBP,  YES 
    endm
    INT_CREATE       ; Creates the interrupt processor
ENDASM

Check:                        
  'Check switches before enabling/re-enabling IOC   
  WHILE SW1 = 0 : WEND  ' Wait until all switch inputs = 1 
 IOC_FLAG = 0          ' Clear the int-on-change flag bit

@ INT_ENABLE IOC_INT   ; Enable 'Int On Change' interrupts
on_status = 0
Low GREEN_LED


'+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Switch_Interrupt:
hserout ["trap ", dec IOC_FLAG, 13, 10]

@ INT_DISABLE IOC_INT  ; Disable further IOC interrupts


        pause 10
        IF sw1 = 0 THEN
        if on_status = 1 then 
        on_status =0
        Low GREEN_LED
        else

        High GREEN_LED
        on_status =1
        endif
        endif
        pause 20


        WHILE SW1 = 0 : WEND
        pause 25
        IOC_FLAG = 0
@ INT_ENABLE IOC_INT
@ INT_RETURN

This is almost certainly something I'm doing wrong, but then again, it's pretty much a direct what was working fine my functioning 16F690 IOC routine?

**Darrel Taylor** · - 21st November 2010, 20:39

On these Enhanced chips, the Interrupt On Change works much better than on the older chips.

You can specify wether you want Rising edges, Falling edges or both by enabling them in the IOCAP and IOCAN.

Then each Pin has it's own interrupt flag in IOCAF. And you need to clear those bits.

It's described better in section 13.0 in the datasheet.
http://ww1.microchip.com/downloads/e...Doc/41413A.pdf

**DaTiNs** · - 31st May 2012, 03:08

Thank you for quick reply!

Yes i have, this is configuration for my pic

ADCON1 = $0F
CMCON = 7
UCFG.3 = 1
PORTA = 0
PORTB = 0
PORTC = 0

**DaTiNs** · - 31st May 2012, 12:56

Just want to add,when I turn off TRM1 before reading i2c, rtc is operating normally, but problem is with LED strips on PWM channel they strart flashing.

T1CON.0=0
I2CRead sda,scl,$D0,$00,[RTCSec,RTCMin,RTCHour,RTCDay,RTCDate,RTCMonth,RTCY ear]
T1CON.0=1

**DaTiNs** · - 31st May 2012, 02:10

Hello good people,

I follow this forum for a long time, it is excellent! I found a lot of good stuff on it.

Now I have a problem with the code from Mr. Darrel Taylor.

Thus, I use pic18f2550 and connect DS1307z and 4 PWM channels to PORTA

SDA Var PORTA.1
SCL Var PORTA.0

ASM
SPWM_LIST macro
SPWM_PIN PORTA, 2, _CH1
SPWM_PIN PORTA, 3, _CH2
SPWM_PIN PORTA, 4, _CH3
SPWM_PIN PORTA, 5, _CH4
endm
SPWM_INIT SPWM_LIST

INT_LIST macro
INT_Handler TMR1_INT, SPWMhandler, ASM, yes
endm
INT_CREATE
ENDASM
@ INT_ENABLE TMR1_INT

Now i got problem with this configuration. When i enable SPWM_LIST then RTC stop working, in fact he working but value he give, its not good. When i disable software pwm, RTC is working good.

I hope that you understande what is my problem and that one of you has a solution for this problem.

Sory for my english

Thanks a lot, Damir

**Darrel Taylor** · - 31st May 2012, 02:50

Do you have this in your program ... ?

Code:

ADCON1 = 15

**ScaleRobotics** · - 13th September 2010, 08:19

Originally Posted by reik6149

hi all, i face a problem here.

why when im trying to compile the dt_ints-18 file without changing anything, it shows

Error[113] c:\picbas~1.47\pbppic18.lib 1170 : symbol not previously defined (int_entry_H)

im using 18f2680

It's not really clear, but it sounds like you might be trying to compile the include file, rather than including it in your code. You are supposed to compile something like this:

Code:

LED1   VAR  PORTB.1

INCLUDE "DT_INTS-18.bas"     ' Base Interrupt System
INCLUDE "ReEnterPBP-18.bas"     ' Include if using PBP interrupts

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,  _ToggleLED1,   PBP,  yes
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM

T1CON = $31                ; Prescaler = 8, TMR1ON
@ INT_ENABLE  TMR1_INT     ; enable Timer 1 interrupts

Main:
  PAUSE 1
GOTO Main

'---[TMR1 - interrupt handler]--------------------------------------------------
ToggleLED1:
     TOGGLE LED1
@ INT_RETURN

**reik6149** · - 13th September 2010, 08:22

yea !! it works !!!! thank you very much ! im too busy body and trying to compile the file each of it.zzzz

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