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Products => Computers => Programming => Topic started by: georgian on December 09, 2020, 10:43:22 pm

Title: WinCUPL, ATF22V10BQL - State machine not working.
Post by: georgian on December 09, 2020, 10:43:22 pm

Hello guys, I'm having a hard time trying to inplement a custom counter.
It works if I start it from 0, but that is a problem for me as the output pins should never be all LOW. I want to start the counter from 1023 (PIN 14 to 23 HIGH) and it dosen't work. All the pins stay LOW.

I do get a lot of warnnings and errors but  it dosen't look like it matters.

I have the latest WinCupl version from microchip website and windows 7.

Not working code:

Code: [Select]

Name     Counter1 ;
PartNo   00 ;
Date     07.12.2020 ;
Revision 01 ;
Designer ME ;
Company  Private ;
Assembly None ;
Location  ;
Device   g22v10 ;

/* *************** INPUT PINS *********************/
PIN 1 = clk;

PIN [14..23] = [Q9..Q0];

field counter = [Q0..Q9];

Sequenced counter {
	present 'D'1023	next 'D'55;
	present 'D'55		next 'D'119;
	present 'D'119	next 'D'247;
	present 'D'247	next 'D'95;
	present 'D'95		next 'D'127;
	present 'D'127	next 'D'611;
	present 'D'611	next 'D'357;
	present 'D'357	next 'D'870;
	present 'D'870	next 'D'87;
	present 'D'87		next 'D'103;
	present 'D'103	next 'D'39;
	present 'D'39		next 'D'63;
	present 'D'63		next 'D'1023;
}

Working code:

Code: [Select]

Name     Counter1 ;
PartNo   00 ;
Date     07.12.2020 ;
Revision 01 ;
Designer ME ;
Company  Private ;
Assembly None ;
Location  ;
Device   g22v10 ;

/* *************** INPUT PINS *********************/
PIN 1 = clk;

PIN [14..23] = [Q9..Q0];

field counter = [Q0..Q9];

Sequenced counter {
	present 'D'0	next 'D'55;
	present 'D'55		next 'D'119;
	present 'D'119	next 'D'247;
	present 'D'247	next 'D'95;
	present 'D'95		next 'D'127;
	present 'D'127	next 'D'611;
	present 'D'611	next 'D'357;
	present 'D'357	next 'D'870;
	present 'D'870	next 'D'87;
	present 'D'87		next 'D'103;
	present 'D'103	next 'D'39;
	present 'D'39		next 'D'63;
	present 'D'63		next 'D'0;
}

Many thanks,
Georgian.

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: mikeselectricstuff on December 09, 2020, 11:09:50 pm

I think the issue is that the PLD registers will reset to zero on power-up, and your not-working code doesn't say what to do in that case, so nothing happens.
Should just be a case of adding a present 0 next 1023 line to the state machine.


 

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: georgian on December 09, 2020, 11:17:33 pm

I can't have any 0. I'm using the upper 3 bits for latch enable on some 4511 ICs. Having this pins LOW will show some unwanted 0 on the display.
For example, my clock shows 00 00 00 -> 12 23 20 -> 00 00 00 -> 12 23 21 -> 00 00 00 and it should be 12 23 20 -> 12 23 21 - > ...
I don't mind having the 0s on first start, but after that there should be none.

EDIT*** 1023 is just a random number that dosen't do anything bad.

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: mikeselectricstuff on December 09, 2020, 11:34:36 pm

Quote from: georgian on December 09, 2020, 11:17:33 pm

I don't mind having the 0s on first start, but after that there should be none.

So adding a line as I suggested should solve the issue - it will only ever be 0 from power-up until the first clock pulse.
 As there is no "next 0" line, it will never return to 0
For a simple example, if you wanted 123123 etc.

0->1
1->2
2->3
3->1

would output 0123123123....

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: georgian on December 09, 2020, 11:39:33 pm

Unfortunatly it dosen't work. I made the modification as you sugested and i get an error and the cod ewon't compile.
Code:

Code: [Select]

Sequence counter {
	present 'D'0		next 'D'807;
	/* present 'D'1023	next 'D'55; */
	present 'D'807	next 'D'119;
	present 'D'119	next 'D'247;
	present 'D'247	next 'D'95;
	present 'D'95		next 'D'127;
	present 'D'127	next 'D'611;
	present 'D'611	next 'D'357;
	present 'D'357	next 'D'870;
	present 'D'870	next 'D'87;
	present 'D'87		next 'D'103;
	present 'D'103	next 'D'39;
	present 'D'39		next 'D'63;
	present 'D'63		next 'D'807;
}

Error:

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: mikeselectricstuff on December 10, 2020, 09:25:54 am

So you've effectively run out of space in the device. First thing to try is  to initialise to a different state from the 0 power-up state, as there may be one that optimises better.
Also try the inverted-output method.
 

Title: Re: WinCUPL, ATF22V10BQL - State machine not working.
Post by: georgian on December 10, 2020, 09:58:26 pm

I got it working. Finaly. I had to invert the output pins and also invert all my numbers. The start/stop ZERO is now All pins HIGH and i'm verry happy with it. I did think about this method, but with external NOT gates... did't thing it could be possible to invert all output pins at once.

Code: [Select]

field counter = ![Q9..Q0];

Sequence counter {
	present 'D'0		next 'D'960;
	present 'D'960	next 'D'968;
	present 'D'968	next 'D'96;
	present 'D'96		next 'D'928;
	present 'D'928	next 'D'896;
	present 'D'896	next 'D'912;
	present 'D'912	next 'D'412;
	present 'D'412	next 'D'666;	
	present 'D'666	next 'D'153;
	present 'D'153	next 'D'936;
	present 'D'936	next 'D'904;
	present 'D'904	next 'D'0;
	/*present 'D'904	next 'D'0;*/
}

Thank you for the tip. Heave a great day.