Instant Interrupts - Revisited

[Darrel Taylor]

This is a series of include files that simplify the process of creating interrupt driven programs for PicBasic Pro. MPASM required.

Once you try this, you may never use ON INTERRUPT again.

Features:

Assembly language Interrupts
Basic language Interrupts
Both ASM and Basic interrupts in the same program
Service Multiple Interrupt sources
Prioritized execution order
Very easy to use


No ON INTERRUPT "Code Bloat"
No ON INTERRUPT " I'll service your interrupt whenever I feel like it." mentality.

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One of the best things about this system, is that you don't have to remember where all the Enable bits and Interrupt flags are located.

Each interrupt "source" is given a unique name that is used to reference it.
The system "Looks Up" the correct bit locations for that name. Reducing those RTFM sessions to a minimum.
The following table lists the Named Interrupts.
Note: More interrupts have been added .. please visit http://darreltaylor.com/DT_INTS-14/intro.html

Available Interrupt Sources 14-bit

 INT_INT -- INT External Interrupt
 RBC_INT -- RB Port Change Interrupt
 TMR0_INT -- TMR0 Overflow Interrupt 16F
 TMR1_INT -- TMR1 Overflow Interrupt
 TMR2_INT -- TMR2 to PR2 Match Interrupt
 TX_INT -- USART Transmit Interrupt
 RX_INT -- USART Receive Interrupt
 CMP_INT -- Comparator Interrupt
 EE_INT -- EEPROM/FLASH Write Operation Interrupt
 BUS_INT -- Bus Collision Interrupt
 PSP_INT -- Parallel Slave Port Read/Write Interrupt
 AD_INT -- A/D Converter Interrupt
 SSP_INT -- Master Synchronous Serial Port Interrupt
 CCP1_INT -- CCP1 Interrupt
 CCP2_INT -- CCP2 Interrupt

Here's a simple example of toggling an LED using the external interrupt (INT). (Hello World)

LED1   VAR  PORTB.1

INCLUDE "DT_INTS-14.bas"     ' Base Interrupt System
INCLUDE "ReEnterPBP.bas"     ' Include if using PBP interrupts

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

    INT_ENABLE   INT_INT     ; enable external (INT) interrupts
ENDASM

Main:
  PAUSE 1
GOTO Main

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

Code Size = 234 words

This project, and it's associated files, have been moved.
Please download them from my website.
DT_INTS-14 (12F-16F)
http://darreltaylor.com/DT_INTS-14/intro.html

DT_INTS-18 (18F)
http://darreltaylor.com/DT_INTS-18/home.html

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