sx/b DATA question

stef · 2007-07-26 12:08

Hi

I'm working on a little project. I neet to store a lot off data at compile time to send out later on the serial colnnection.
I want to use the DATA statemend but I had a little question on it.

Can you store multiple byte values, separated by a "," on one line?

ex
Preset1:
DATA %10100000, %00000000, %00000000, %00000111, %00000000, %00010100, %00111000
DATA %10100001, %00000000, %00000000, %00000111, %00000000, %00010000, %00111001

see example.

And how do you recall them with read + indx??

Thanks in advance.

stef

·

OzStamp · 2007-07-26 12:33

Hi Stef

Yes a comma is all that is needed.
You may want to revert to coding in Hex notation so you can fit more on 1 line

See the SX B compiler online help file,
The example for the keypad encoder down the bottom shows you how
to retrieve the values from the data look up tables.

Cheers

Ronald Nollet

T&E Engineer · 2007-07-26 16:14

You may also want to look at doing a WORD Read. JonnyMac wrote a nice function to do this.
For example:········

data1   VAR Word
data2   VAR Word           
data3   VAR Word  
 
tmpW1  VAR Word
tmpW2  VAR Word
tmpB1  VAR Byte
J  VAR Byte
.
.
WREAD  FUNC 2, 3  ' read word from WDATA
.
.
 
FOR J = 0 TO 15
 data2 = WREAD dat2b, J
 data3 = WREAD dat3b, J
 'IF data2 = %0000000000001111 THEN data2 = 0
 'IF data3 = %1111111111110000 THEN data3 = 1
NEXT
.
.

' Use: result = WREAD table, element
' -- "table" is a WDATA table
' -- "element" is the nth word in the WDATA table
FUNC WREAD
  tmpW1 = __WPARAM12    ' get table address
  tmpB1 = __PARAM3    ' get element
  tmpB1 = tmpB1 << 1    ' x2; convert to LSB offset 
  tmpW1 = tmpW1 + tmpB1    ' add offset to address
  READ tmpW1, tmpW2_LSB, tmpW2_MSB
  RETURN tmpW2
  ENDFUNC
.
.
dat2b:
 WDATA %0000000000000001
 WDATA %0000000000000011
 WDATA %0000000000000111
 WDATA %0000000000001111
 WDATA %0000000000011111
 WDATA %0000000000111111
 WDATA %0000000001111111
 WDATA %0000000011111111
 WDATA %0000000111111111
 WDATA %0000001111111111
 WDATA %0000011111111111
 WDATA %0000111111111111
 WDATA %0001111111111111
 WDATA %0011111111111111
 WDATA %0111111111111111
 WDATA %1111111111111111
 
dat3b:
 WDATA %1000000000000000 
 WDATA %1100000000000000
 WDATA %1110000000000000
 WDATA %1111000000000000
 WDATA %1111100000000000
 WDATA %1111110000000000
 WDATA %1111111000000000
 WDATA %1111111100000000
 WDATA %1111111110000000
 WDATA %1111111111000000
 WDATA %1111111111100000
 WDATA %1111111111110000
 WDATA %1111111111111000
 WDATA %1111111111111100
 WDATA %1111111111111110
 WDATA %1111111111111111

Also look at the attached file - example from JonnyMac.

Post Edited (T&E Engineer) : 7/26/2007 5:09:23 PM GMT

sx/b DATA question

Comments