tables using PBP and asm command retlw

[Acetronics2]

Hi, Queenidog

Don't you know the LOOKUP command exactly does that ??? ( much simpler, no ??? ...)

you also could play with POKECODE and PEEKCODE ... to make things a bit funny ...

'*****************************************************************************
PwmLoop: ' 165 steps per sec. = ... 3ms per loop
'*****************************************************************************
 
'Short loop 24 > 336 µs
  
IF ( Sampled >= 31 ) then      ' No light if Sampled < 31
 
 Delay2 = 0
 peekcode ( 850 + sampled ), delay  ' 881 = 850 + 31 !!!
 
 IF Sampled >= 87 Then Longloop
 
 IF Sampled >= 79 THEN Delay2 = 1  ' Add 255 to Pauseus...using BYTE
 
 Strob_led = 1
  
 Pauseus delay
 IF Delay2 Then Pauseus 255
      
 Strob_led = 0
       
ENDIF
 delay = 0
  
Longloop:
 
 For x = 0 to 13 ' min 336 µs
 
  IF delay then Strob_led = 1   'Skip min Pauseus ...
   
  Pauseus delay
 
  Strob_led = 0
  
  Pauseus   Duration  - delay
  
 next x
RETURN

....


'*****************************************************************************
'Fading_Table
'*****************************************************************************
'             0   1   2   3   4   5   6   7   8   9  
'
Pokecode @881,       24, 27, 29, 32, 35, 38, 41, 44, 47,_ '  30
             50, 54, 57, 60, 64, 68, 71, 75, 79, 83,_ '  40
             87, 91, 96,100,104,109,113,118,123,127,_ '  50
            132,137,142,147,153,158,163,169,174,180,_ '  60
            186,191,197,203,209,212,217,245,250,  1,_ '  70
              7, 13, 21, 30, 39, 48, 57, 24, 25, 26,_ '  80
             27, 28, 29, 30, 31, 32, 33, 34, 35, 36,_ '  90
             37, 38, 39, 40, 41, 43, 44, 45, 46, 48,_ ' 100
             49, 50, 52, 53, 54, 56, 57, 59, 60, 62,_ ' 110
             63, 65, 67, 68, 70, 72, 73, 75, 77, 79,_ ' 120
             81, 83, 84, 86, 88, 90, 92, 94, 97, 99,_ ' 130
            101,103,105,107,110,112,114,117,119,122,_ ' 140
            124,126,129,132,134,137,139,142,145,148,_ ' 150
            150,153,156,159,162,165,168,172,176,180  ' 160

Alain

[queenidog]

I was using Lookup but the table size is restricted by page boundaries (thus only 96 characters can be stored in a table).

Here's the code I was using for a small data table:

Start:
y=0:z=1
For x= 0 to 15 'reading 16 bytes/characters from table Imagebyte
lookup x, ["THIS IS A TEST"], imagebyte
GoSub Writebyte
next x
goto Start


Writebyte: 'Subroutine to send serial image data to shift registers
y=y+1
'high clockpin This statement NOT NEEDED
shiftout datapin,Clockpin,MSBFirst,[imagebyte] 'shift out imagebyte one bit at a time
'low clockpin This statement NOT NEEDED
lcdout $fe, 1 'clear display
lcdout $FE, $14 , imagebyte 'Display value on LCD
Low PORTE.2 'strobe for LCD
'pause 200
z=y//4 'get modulus (remainder) remainder is only zero when 4 divides
If z=0 then 'evenly into x (4/4= 1, 0 remainder, 8/4=2, 0 remainder
high Latch '4 bytes in registers, ie 32 bits so enable both register latches
pause 1 'pause 1 mS may not need.
outena=0 ' I have 4 bytes, light up LEDs

Are you saying I can use Pokecode to create my table of values, and Peekcode to retrieve them? 255 values ? You have about 150 values in your table example below. What does your program do?

[queenidog]

Alain, thanks for the tip about using PokeCode and Peekcode. This did the trick. I put 255 values in a table and was able to read everyone of them. So simple...

Why is Melanie saying to use Writecode/Readcode? What is the difference?

And why does PokeCode work where Lookup doesn't (any more than 96 values and it cacks)? In the PBP manual it states that Lookup and Arrayread can have 255 values. Is this an error, or just not the "whole truth"?

[financecatalyst]

I am trying to understand the table method and I came across this example. I am having trouble visualizing (Alain's fading table) this method as to how it will be an equivalent table in lets say in an excel file. I mean will it just be row numbers (starting from lets say 881) and 1 column with all the stored values one below the other starting from 24, and why is "_" sign is there in the table , I don't know if I have made my question clear, but I can try explain differently if needed