I2C lcd ( arduino ) with PICBASIC, help

[richard]

the ext modifier should help
lcdb VAR BYTE[22]

ASM
lcd_cmd = _lcdb
lcd_buff = _lcdb+2

ENDASM
these must be after the asm code

lcd_cmd var byte EXT
lcd_buff var byte EXT



lcdb[0]=$fe
lcdb[1]= your lcd command eg 1 $80 $c0

use arraywrite to load lcd_buff (max 20 chrs)

then you can pass
lcd_cmd to your lcd write code if you need to send a cmd with your lcd string
or pass lcd_buff if no cmd required

ps don't forget to add a dely after a cmd to give the lcd time to act

ps ps
the asm names are case sensitive


left a bit out

lcd_cmd var byte EXT
lcd_buff var byte EXT

not sure if it needs to be try it and see

lcd_cmd var byte[2] EXT
lcd_buff var byte[20] EXT

[EarlyBird2]

the ext modifier should help
lcdb VAR BYTE[22]

ASM
lcd_cmd = _lcdb
lcd_buff = _lcdb+2

ENDASM

lcdb[0]=$fe
lcdb[1]= your lcd command eg 1 $80 $c0

use arraywrite to load lcd_buff (max 20 chrs)

then you can pass
lcd_cmd to your lcd write code if you need to send a cmd with your lcd string
or pass lcd_buff if no cmd required

ps don't forget to add a dely after a cmd to give the lcd time to act

ps ps
the asm names are case sensitive


left a bit out

lcd_cmd var byte EXT
lcd_buff var byte EXT

not sure if it needs to be try it and see

lcd_cmd var byte[2] EXT
lcd_buff var byte[20] EXT

Steve,
the point is that I do not have PBP_3.
My pbp is 2.50 B.
No arraywrite or read, no usercommand ... are available to me .
Thanks
Ambrogio

Ambrogio is using pbp2.5 and I am even older on 2.46.

[richard]

without arraywrite that's a lot of code

[EarlyBird2]

without arraywrite that's a lot of code

and a lot more fun!

I am only along for the ride and to keep my brain ticking over.

[richard]

does 2.5 have the dig command

[Dave]

The DIG modifier has been there forever....

[iw2fvo]

Thanks to all of you for the assistance.
What is the dig modifier please ?
Thnaks
Ambrogio

[pedja089]

From manual:
DIG returns the value of a decimal digit. Input the digit number (0 – 9, with 0 being the rightmost digit). DIG returns the value of the decimal digit that you specified. DIG is commonly used to distill BCD digits from numeric values and to isolate single digits for display on seven-segment LCD.
B0 = 123 ' Set B0 to 123
B1 = B0 DIG 2 ' Sets B1 to 1 (digit 2 of 123)