Confused by Arraywrite

[Dave]

Well Richard, Making the statement LOOKUP2 does not seem to work. I have no idea where the data is coming from but, it is not what I set the ARRAYWRITE statement with. The only thing that is correct as I can see it is the string length.

[richard]

your correct dave , I have fallen into a trap set by mike, a sram array is not a valid source for any pbp lookup command . the concept seems flawed anyway surely the lookup table source should be the translated data table and the outarray data the index. we already have b0 as a pointer to the outarray data .
my intent was just to demonstrate how to cycle through an array of variable length using a null as the end marker

[mpgmike]

Retypesnikrep, what are you wanting to display? Is there constants like "Temperature is " along with variables like "TempC VAR BYTE"? I've used the HD44780 based LCD for several projects. A display line would look like:

ARRAYWRITE LPsiA, [#LPsi]
    for b0 = 0 to 13
        LOOKUP b0,["Low PSI Set = "],b1
        PORTB = b1
        gosub Send
    next b0
    if LPsi < 10 then
        LPsiA[1] = LPsiA[0]
        LPsiA[0] = " "  
    endif 
    PORTB = LPsiA[0]
        gosub Send
    PORTB = LPsiA[1]
        gosub Send

Here I use ARRAYWRITE to extract the individual digits of my pressure value LPsi into ARRAY LPsiA in ASCii format.

I use LOOKUP to extract individual characters from the string "Low PSI Set = ".

[retepsnikrep]

basically I have a 1ms interrupt going on.

I want this to check a buffer for stuff waiting to be sent to the screen, and if stuff waiting then send it via Hserout one chr at a time.

OK so far.

I want to fill my large buffer using array write as it contains text and variables... ie
So it mimics the screen, as if I was writing it straight to the screen using hserout....

arraywrite buffer, ["Temperature 1 is ",#Temp1,"C",32,"Temperature 1 is ",#Temp1,"C"]

[Dave]

Thanks Richard, I do understand now. By the way, What's Mpgmike and Retepsniarep talking about? It seems as though this tread has been hijacked.

[Dave]

Richard, After chatting with Charles, I decided to eliminate the "lookup2" statement and just pass the array variable to the serial buffer routine. All is working now. Nice and neat. Here is the code:

'************************************************* ********************
SERIALOUT2: 'OUTPUT SERIAL STRING TO PORT 2
'************************************************* ********************
BYTEIN = 0
WHILE OUTARRAY(BYTEIN)
TX_BYTES2(TX_OUTPUT2) = OUTARRAY(BYTEIN)
BYTEIN = BYTEIN + 1
GOSUB SNDCHAR2 'INCREMENT BUFFER POINTERS
WEND
RETURN