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If your using an 18F series, then as a suggestion why not use an 18F4431 which has a quadratue encoder interface, no software to write to count the pulses or check direction, which you can do by check ...

Hi, in the past I have used a program called "Windmill ComDebug", its free to download.
Easy to use.
Below is what it can do.
Just for clarity I have used there software and hardware prod ...

You have no EXIT condition for the 'WHILE' Loop so you will always be stuck in it.

while(1 or true){
do something //always stuck here.
}

Now some code ...

Just a quick note on this.
I found that under windows 10 I had to install MPLAB and CCSC software inc debugger drivers as administrator, otherwise nothing would work.

Also be warned, I had just bo ...

That's exactly right.
The only point about putting the other files into the header files list,
is it allows you to click on them there to open them and look at them.

Yes good point that Ttelmah.

I've found with mplabx inc latest version, that in MPLABX projects window just have your main.c file only as the source file, then just use #include xxx.c etc in either another header file or in your ...

Right first thanks for help everyone.
Have gone back to using 18f4431, been testing on Mikroe Easypic V7 board.

Haa haaa laughs, at first the count was just going to 1 then back to zero when turni ...

Well I have the interrupt working thanks to the links posted, but I think I am going to look at a different chip, I think I have some of the 18fx431 series that have the simpler QEI unit that I have u ...

ok, real curious....

this option..

QEI_OUTPUT_DISABLED

NO info that I can see in the 2019 or 2121 CCS manual
actually very little info about all the 'options', sigh

Kinda wondering if it ...

Ahhh, Thanks Temtronic and Ttlemah, will try that tomorrow and come back.
Will do some more reading this afternoon as well.
Regards.
Dave

Compiler version PCWHD 5.105 and 5.107 (used both for testing)
IDE both PCWHD and MPLABX 6.05
Hardware used: DSPIC33ep512mu810 (mikroe Clicker2 board)
ICD-U80 & PICKIT 4
4 X 20 Char LCD 4 bit ...

#include <18F46K22.h>
#device ADC=16

#FUSES NOWDT //No Watch Dog Timer
#FUSES NOJTAG //JTAG disabled
#FUSES NOMCLR //Master Clear p ...

I have just purchased a pickit4 so I can use with the CCS ide, also a new laptop, I have previously used M'Chip ICD 3 with the ide on another laptop.
Now the fun begins.

I installed all the CCS so ...

There is usually the manufacturer's part number on the side or top of the display.
Google this and you should be able to download the datasheet, for that 7 seg display, it will have the pin out.
Dav ...

I've been retired for 30 years, just 'play with PICs' now, though I do some 'Proof of Concept' projects. When I started, PICs had neat quartz windows on top and needed 15 minutes to erase my code ! M ...