Functions not supporting BIT type?

[joe rocci]

Arduino Uno board with ATMEGA 328P.

Example Code:

cls
locate 0,0
PRINT "Program Started."
wait 1 s

Function Bit_Test as bit
Bit = 1
if Bit = 1 then
Bit_Test = 1
else
Bit_Test = 0
end if
end function

locate 0,0
cls

Dim bb as bit
bb = Bit_Test
If bb = 0 then
Print "0"
else
Print "1"
end if

If the function return type is made BYTE and "Dim bb as bit" is commented out it works; with BIT type it doesn't work.

Is it me, or is there a problem with BIT return types in functions?

Joe

[Anobium]

There is something not right.

Change your code to remove using BIT as a variable. I removed the LCD code. You need to add back. :-)

Let me know the results, but, the ASM looks wrong.

~~~~
;chip settings
#chip mega324p, 8
#config osc = int
Dim bb as bit
Dim bb1 as bit
Dim bb2 as bit
Dim bb3 as bit
bb1 = 1
bb2 = 1
bb3 = 0

Function Bit_Test as bit
BBit = 1
if BBit = 1 then
Bit_Test = 1
else
Bit_Test = 0
end if
end function

bb = Bit_Test
If bb = 0 then

else

end if
~~~~~

[joe rocci]

I'm not quite sure what you're requesting. If I change the function definition to:

Function Bit_Test as byte

and remove:

Dim bb as bit

then it works.

[Anobium]

You have a reserved word as a variable name at bit = 1.

Anyway, I have tested and there is something wrong with the ATMEL code, it works ok with Pic. We will have to investigate. Watch this posting for an update.

[joe rocci]

Thanks

[Anobium]

Full code with GCB and ASM for testing.

[joe rocci]

Anobium

I don't have a GLCD module, but it appears that the only significant change you made is to rename BIT to BBit. Are you saying that it works as expected with the renamed variable?

[Anobium]

:-)

I posted the completed code I used to understand the issue. It is not the fix.

However, what I did change was the use of the word 'bit' as a variable as this (for me) is something I would not do.

We are investigating the issue. Sorry, for confusion.

[joe rocci]

No problem...I just wasn't sure whether you were telling me this is the fix or whether you're still investigating.

Yes, the use of a reserved word was unfortunate. Question: Is there a list of reserved words somewhere, not only in the core, but also the libraries? Also, variables. This has driven me crazy in the past.

[Anonymous]

You can find a pretty complete list of reserved words in the syntax file for whatever IDE you're using. I have a homemade one for my TextPad IDE. In Frank's GBC@Syn, look in the Synwrite/HL subdirectory.