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Recent Forum Posts

Re: Error compiling with DT Interrupts

Hi Richard,

thank you so much for your quick reply.

And once again you are 100% correct.
How could i be so blind?

Thanks. It now compiles correctly.
PaulMaker Yesterday, 23:18

Re: Error compiling with DT Interrupts

INT_Handler USART_RX_INT, _RxISR, PBP, yes

dt ints does not have an interrupt called USART_RX_INT perhaps you mean RX_INT
richard Yesterday, 22:22

Error compiling with DT Interrupts

Hi guys,

i'm a bit lost with a very small and simple program which does not compile when using DT interrupt library on the 18F2580.

I was hopping someone more inteligent could help figure out...
PaulMaker Yesterday, 21:48

Re: 12F683 interrupt on change improvement?

The output is pretty clean in my experience. I use my photodiode in photoconductive mode (reverse bias), which makes it faster and supposedly noisier but I haven't noticed any noise except in some...
achilles03 - 13th January 2026, 04:23

Re: 12F683 interrupt on change improvement?

There are less complicated ways i think

'PIC-12F683#CONFIG
__config _FOSC_EC & _WDT_OFF & _CP_OFF & _MCLRE_OFF & _PWRTE_ON & _CPD_OFF &_FCMEN_OFF &_IESO_OFF
#ENDCONFIG

DEFINE OSC 8
richard - 13th January 2026, 03:44

Re: 12F683 interrupt on change improvement?

Yep, that did it! The output is now as smooth as the 16F883's output. The 16F883 used the INT_INT interrupt from the start. The GPC_INT requires the particulars you noted, and additionally it...
achilles03 - 13th January 2026, 03:30

Re: 12F683 interrupt on change improvement?

Hi Dave,

How clean is the output from your photodiode?
I have been working on a similar setup recently using an encoder wheel and photointerrupter.
I had greater success feeding the MCU's input...
Aussie Barry - 13th January 2026, 00:54

Re: 12F683 interrupt on change improvement?

i would

you are not using IOC correctly since the gpio is never read in the isr to clear the change condition

4.2.3 INTERRUPT-ON-CHANGE
Each of the GPIO pins is individually...
richard - 12th January 2026, 23:52

Re: 12F683 interrupt on change improvement?

I had thought - should I be using "INT_INT" instead of "GPC_INT"? It is set up using GPIO.2 as the interrupt pin, which is the dedicated INT pin per the datasheet. Can you set up an interrupt on...
achilles03 - 12th January 2026, 23:29

12F683 interrupt on change improvement?

I have a project using three 12F683s controlled by a 16F883 master. The goal of the project is to track the RPM of 4 independant propellers on a quadcopter using an IR photodiode and emitter (i.e. a...
achilles03 - 12th January 2026, 21:58

PICBASIC PRO™ Compiler 3.0 PBP is a BASIC programming language for Microchip's PIC microcontrollers.

Version 3 is a major evolution of this popular product, making it even more capable, stable, and reliable. All the years of development culminate here, with many new capabilities and improvements. Come see why thousands of engineers, educators and hobbyists have depended on PBP for more than a decade.

Supports more than 500 microcontrollers.
Newly revised 300-page manual.
MPLABX compatible

Visit our secure online shop to order

Software activation keys are delivered electronically after purchase.
15 Day Trial Before Activation Key is Required

If installed without an activation code, the software will be fully functional for 15 days.
Read about Product Activation

PBP 3.0 Gold Edition

Supports more than 500 devices.

PBP 3.0 Silver Edition

Supports Mid-Range devices.

Number of computer installations allowed 3
(May be uninstalled and moved. License is for single user.)

Maximum supported clock frequency 64Mhz

Maximum supported clock frequency 20Mhz

Commercial License

What is PBP?

PBP is a BASIC programming language for Microchip's PIC microcontrollers.

It has evolved over the span of 15 years, making it the industry standard in its field. It has become a professional-level development tool for embedded programmers, though it retains the easy-to-learn syntax that makes it popular among experimenters and educators worldwide.
...

Compare Editions

PBP3 is available in THREE editions, Chose the right one for YOU!. From Experimenter - enough for the hobbyist through Silver & GOLD - strong enough for a Pro. Including commercial licenses and annual update packages.

...

Features

PICBASIC PRO™ Compiler 3.0

Familiar BASIC syntax
- IF (condition) THEN / ELSE / ELSEIF /ENDIF
- SELECT CASE
- FOR… NEXT
- DO WHILE/UNTIL

...

MicroCode Studio Plus 5.0

MicroCode Studio Plus 5.0 (compatible with PBP 3.0 or later)
The main editor provides full syntax highliMicroCode Studio Plus is a powerful, visual Integrated Development Environment (IDE) with In Circuit Debugging (ICD) capability designed specifically for PICBASIC PRO™ Compilerghting of your code with context sensitive keyword help and syntax hints. The code explorer allows you to automatically jump to include files, defines, constants, variables, aliases and modifiers, symbols and labels, that are contained within your source code. Full cut, copy, paste and undo is provided, together with search and replace features.
...

Supported Devices

...

Product Activation

When installed PBP3 will operate in trial mode for 15 days, we recommend that you TRY PBP3 BEFORE you buy PBP3. Be sure that you are happy with the product and the facilities it offers

After purchasing your PBP3 license, the product may be activated by entering the activation key as prompted by the application, this process should be carried out whilst your host machine has access to the internet. Activation requires that the machine can contact the melabs activation service.
...

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