Error 302 - Electronic Circuits Projects Diagrams Free

Six-Sixteen · 15th February 2004, 04:50 PM

Hello

One time I came across a program in ASM that has a line read Error 302, something like that (i'm not quite sure). That program is for PIC16F84A.

Anybody can tell me what this means and the correct instruction/syntax?

**Nigel Goodwin** · 15th February 2004, 06:09 PM

Quote:

Originally Posted by Six-Sixteen

Hello

One time I came across a program in ASM that has a line read Error 302, something like that (i'm not quite sure). That program is for PIC16F84A.

Anybody can tell me what this means and the correct instruction/syntax?

They are all explained in the MPASM helpfile - 302 isn't an error, it's just a warning to remind you that you are accessing a register not in bank zero, and to be sure you switch banks before doing so. You can turn the warnings off if you want, again it's explained in the helpfile.

Six-Sixteen · 15th February 2004, 08:57 PM

Dear Nigel,

Immediately I went to the help file of the MPASM, and I found what youve said. Its not Error 302, but Errorlevel -302. Thanks a lot.

I compiled my program again, and the warning's gone.

Another problem I have is that there are other warnings. They are:
Found label after column 1. (LOOP1)
Found opcode in column 1. (RETURN)
Found directive in column 1. (END)

What do these messages mean and how do I eliminate these?

Exo · 15th February 2004, 10:13 PM

MPASM wants you to put labels and code in diffirent colums, so your code gets more readable
so a label should be at the beginning of a line, while code should be 'tabbed'.

example

Code:

Start       ;label, at beginning of line

     MOVLW 0x55
     MOVWF EECON1   ;code - first a TAB 
     ...

Six-Sixteen · 16th February 2004, 07:15 PM

To Exo,

Now I get no error messages. Thanks to you.

Is it normal for MPASM to always include Error log file in its compilation although there are no more error messages? This error log file is 0KB.

**Nigel Goodwin** · 16th February 2004, 11:01 PM

Quote:

Originally Posted by Six-Sixteen

To Exo,

Now I get no error messages. Thanks to you.

Is it normal for MPASM to always include Error log file in its compilation although there are no more error messages? This error log file is 0KB.

Yes it is normal, if you had previously had an error log file saved, it would still be there - so it's overwritten with a blank file.

Six-Sixteen · 17th February 2004, 04:40 PM

To Nigel,

I really appreciate your prompt help. Because of your replies I am encouraged to search for more and to do experiments regarding PICs and electronics.

And to Exo also. Thanks you're there.

**Nigel Goodwin** · 17th February 2004, 05:07 PM

Quote:

Originally Posted by Six-Sixteen

I really appreciate your prompt help. Because of your replies I am encouraged to search for more and to do experiments regarding PICs and electronics.

Thanks very much, try having a look at my PIC tutorials at http://www.winpicprog.co.uk

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15th February 2004, 04:50 PM	(permalink)
Six-Sixteen	Error 302 Hello One time I came across a program in ASM that has a line read Error 302, something like that (i'm not quite sure). That program is for PIC16F84A. Anybody can tell me what this means and the correct instruction/syntax?

15th February 2004, 08:57 PM	(permalink)
Six-Sixteen	Error 302 Dear Nigel, Immediately I went to the help file of the MPASM, and I found what youve said. Its not Error 302, but Errorlevel -302. Thanks a lot. I compiled my program again, and the warning's gone. Another problem I have is that there are other warnings. They are: Found label after column 1. (LOOP1) Found opcode in column 1. (RETURN) Found directive in column 1. (END) What do these messages mean and how do I eliminate these?

15th February 2004, 10:13 PM	(permalink)
Exo	MPASM wants you to put labels and code in diffirent colums, so your code gets more readable so a label should be at the beginning of a line, while code should be 'tabbed'. example Code: Start ;label, at beginning of line MOVLW 0x55 MOVWF EECON1 ;code - first a TAB ...

16th February 2004, 07:15 PM	(permalink)
Six-Sixteen	Error 302 To Exo, Now I get no error messages. Thanks to you. Is it normal for MPASM to always include Error log file in its compilation although there are no more error messages? This error log file is 0KB.

17th February 2004, 04:40 PM	(permalink)
Six-Sixteen	Error 302 To Nigel, I really appreciate your prompt help. Because of your replies I am encouraged to search for more and to do experiments regarding PICs and electronics. And to Exo also. Thanks you're there.