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Ayne · 15th January 2007, 04:00 PM

How can i call a program that is in another assembly file.
I mean;

Our main program file in which we are working.

Code:

main
movlw   .255 
movwf   PORTB
Call   delay
movlw   .0
movwf   PORTB
call   delay
Goto $ - 6
End.

Our another file that has libraries(like delay, serial port, etcetc).

Code:

delay
movlw   255
movwf   i     ;our variable i
DecFSZ   i, F
Goto $ - 1
return

Now how can i call a delay routine in our main working file???

**Nigel Goodwin** · 15th January 2007, 04:15 PM

A simple option is to put them in an include file, and add it at the top of the program - but a more complicated (and better?) option is to use the linker - personally I never have, I'd sooner cut and paste my common subroutines in.

Ayne · 15th January 2007, 04:42 PM

Is there any subroutine of delay on any website???

__________________________________________________ _______________
/*Nigel Goodwin likes C complier for microcontrollers*/
/*Nigel Goodwin always use MPLABSIM simulator */

**Nigel Goodwin** · 15th January 2007, 04:52 PM

Quote:

Originally Posted by Ayne

Is there any subroutine of delay on any website???

Look on the PICList - there's a delay code generator.

mramos1 · 15th January 2007, 06:35 PM

Ayne,

When you find the delay code generator, could you post a link to it.

I would like to have that.

**Nigel Goodwin** · 15th January 2007, 11:21 PM

Quote:

Originally Posted by mramos1

Ayne,

When you find the delay code generator, could you post a link to it.

I would like to have that.

Jesus! - you've got almost 1500 posts here, and you can't be bothered to look on the PICList for the blindingly obvious delay code generator?.

Here's the link! http://www.piclist.com/techref/picli...egen/delay.htm

mramos1 · 16th January 2007, 12:54 AM

I thought if Ayne needs it and was off to find it, I could ask him for a link.

He does not have to post it. I do not see where it has to do with anything but I will go find it later. I can find the PIClist site and wing the delay code generator part.

I do stuff for others to help them out when they ask, if I can, and it was not like asking a lot.

Sorry.

I tought I would save time on something that I might use (sure I would try it and going full on PIC assembler and out of the BASIC) as well others might want it as well and be able to find it here from a link.

By the tone, I take it PICList should be something I check though I still use BASIC?

mramos1 · 16th January 2007, 01:16 AM

Online version:

http://www.piclist.com/techref/picli...egen/delay.htm

or

http://www.piclist.com/cgi-bin/delay.exe

EDIT: Never found the Windows version. But that works for me.

gregmcc · 16th January 2007, 07:40 AM

Here's a windows version - http://www.mnsi.net/~boucher/picloops.html

Ayne · 16th January 2007, 01:10 PM

Code:

Delay X cycles (7-1030) exclusive (11 to 1034 cycles inclusive of call and return) 
From Dwayne Reid 

;10 bit delay routine providing 1 cycle resolution.  Works with both 12 & 14 bit core PICs.
;Original idea from Mike Harrison.  This version by Dwayne Reid
;
;enters with upper 8 bits of delay in DELAYU, lower 2 bits in bits 1,0 of DELAYL
;bits 7..2 in DELAYL can be used as flags for whatever purpose desired.
;returns with W destroyed
Delay10bit      ;delay is 10 bit value + 7 cycles ( + call + return, if any)
     incf        DELAYU,F        ;correct for dec & test instead of test & dec
Dly10bLoop
     comf        DELAYL,W        ;invert LSBs
     decfsz      DELAYU,F
       goto      Dly10bLoop      ;coarse delay to closest 4 cycles
     andlw       b'00000011'
     addwf       PCL,F
     nop
     nop
     nop

I want to gernate variable delays in my program
I found this on the PICLIST.

Code:

;bits 7..2 in DELAYL can be used as flags for whatever purpose desired.

What is the meaning of above line??? For what pupose i can use...Can any one gave me example???

**Nigel Goodwin** · 16th January 2007, 01:15 PM

Why not use the delay code generator there?, two of us have now posted direct links to it.

Ayne · 16th January 2007, 03:07 PM

Quote:

Why not use the delay code generator there?, two of us have now posted direct links to it.

cuz i need different delays in my program.
Just like this

Quote:

movlw .34 ;delay of 34uSec
call delay

above code is just for an example...

But the code generater creat a fix delay.

Ayne · 16th January 2007, 03:14 PM

Thank u..... Nigel Goodwin , gregmcc , mramos1....

**Nigel Goodwin** · 16th January 2007, 03:20 PM

Quote:

Originally Posted by Ayne

cuz i need different delays in my program.
Just like this

above code is just for an example...

But the code generater creat a fix delay.

What sort of range and resolution do you need?, my tutorials generally include variable delays - using a 1mS resolution (based on the code generator).

mramos1 · 17th January 2007, 12:45 AM

Ayne.

You can pick the range of delays times you need, say 1ms to 500ms (1/2 a second). I would make a 1ms delay via the online calc/delay generator.

Then convert it to a subroutine you can CALL. Each time you call it you get about 1ms (there is some overhead).

For 25ms make a loop to call it 25 times.

MPLABS has a stopwatch you can time it with too.

If you need 500ms, you can call another routine that you call 100msec and loop 5 times calling it. And of course 100msec: calls your 1ms subroutine 100 times.

Hope that makes since.

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15th January 2007, 04:00 PM	#1
Ayne	Call Them How can i call a program that is in another assembly file. I mean; Our main program file in which we are working. Code: main movlw .255 movwf PORTB Call delay movlw .0 movwf PORTB call delay Goto $ - 6 End. Our another file that has libraries(like delay, serial port, etcetc). Code: delay movlw 255 movwf i ;our variable i DecFSZ i, F Goto $ - 1 return Now how can i call a delay routine in our main working file???

15th January 2007, 04:15 PM	#2
Nigel Goodwin	A simple option is to put them in an include file, and add it at the top of the program - but a more complicated (and better?) option is to use the linker - personally I never have, I'd sooner cut and paste my common subroutines in. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

15th January 2007, 04:42 PM	#3
Ayne	Is there any subroutine of delay on any website??? __________________________________________________ _______________ /Nigel Goodwin likes C complier for microcontrollers/ /Nigel Goodwin always use MPLABSIM simulator /

15th January 2007, 06:35 PM	#5
mramos1	Ayne, When you find the delay code generator, could you post a link to it. I would like to have that.

16th January 2007, 12:54 AM	#7
mramos1	I thought if Ayne needs it and was off to find it, I could ask him for a link. He does not have to post it. I do not see where it has to do with anything but I will go find it later. I can find the PIClist site and wing the delay code generator part. I do stuff for others to help them out when they ask, if I can, and it was not like asking a lot. Sorry. I tought I would save time on something that I might use (sure I would try it and going full on PIC assembler and out of the BASIC) as well others might want it as well and be able to find it here from a link. By the tone, I take it PICList should be something I check though I still use BASIC?

16th January 2007, 01:16 AM	#8
mramos1	Online version: http://www.piclist.com/techref/picli...egen/delay.htm or http://www.piclist.com/cgi-bin/delay.exe EDIT: Never found the Windows version. But that works for me. Last edited by mramos1; 16th January 2007 at 01:20 AM.

16th January 2007, 07:40 AM	#9
gregmcc	Here's a windows version - http://www.mnsi.net/~boucher/picloops.html

16th January 2007, 01:15 PM	#11
Nigel Goodwin	Why not use the delay code generator there?, two of us have now posted direct links to it. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

16th January 2007, 03:14 PM	#13
Ayne	Thank u..... Nigel Goodwin , gregmcc , mramos1....

17th January 2007, 12:45 AM	#15
mramos1	Ayne. You can pick the range of delays times you need, say 1ms to 500ms (1/2 a second). I would make a 1ms delay via the online calc/delay generator. Then convert it to a subroutine you can CALL. Each time you call it you get about 1ms (there is some overhead). For 25ms make a loop to call it 25 times. MPLABS has a stopwatch you can time it with too. If you need 500ms, you can call another routine that you call 100msec and loop 5 times calling it. And of course 100msec: calls your 1ms subroutine 100 times. Hope that makes since.