Strings and things (again!)

Hugh

Hi,

I'm struggling with strings and things (again!)

I have a array of bytes, 'dataGS', that contains [67, 71, 77, 65, 66, 72, 73, 66] and that I would like to show on an LCD as a string. Another byte array, 'scratchPad', is used to shuffle things about.

What I thought I was doing was moving the first four characters of 'dataGS' into 'scratchpad' and then treat this as a string.

CON
dataGS[20] = [67, 71, 77, 65, 66, 72, 73, 66]

VAR
scratchpad[20]

...

PUB Main
bytefill(@scratchpad, 0, 20) 'Fill scratchpad with zeroes
bytemove(@scratchpad, @dataGS, 4)
lcd.str(scratchpad)

I've tried using lcd.str(@scratchpad).

Am I being naive that this will create a string (with a trailing zero, etc.,)?

Thanks
Hugh

SRLM

Why is scratchpad in CON? And I think it should be lcd.str(@scratchpad)

Maybe you should move the arrays out of the CON section and into a DAT section. I'm looking through the manual (v1.2) and I don't see anything about arrays in the CON section. Instead, I'd try something like:

DAT
   dataGS byte"My String"
   scratchpad byte 0[20]

Hugh

Changed to VAR.
Sorry - my copy-and-paste error.

Ariba

Your PUB code should work (with lcd.str(@scratchpad), but you can not define byte arrays in CON.
For initialized byte arrays you can use a DAT section, zero filled arrays are defined in a VAR section. In both cases you need the byte keyword:

VAR
  byte scratchPad[20]
DAT
dataGS  byte  67, 71, 77, 65, 66, 72, 73, 66, 0

Andy

Mike Green

As long as you use "lcd.str(@scratchpad)" it should work. I prefer to leave out the BYTEFILL and do:

   bytemove(@scratchpad,@dataGS,4)
   scratchpad[4]~   ' add zero byte to end
   lcd.str(@scratchpad)

Hugh

You are all right in all respects. It now works perfectly.

Thank you!