LCD Control

[Luciano]

Hi,

Your display is not correctly initialized.
(This is why you get only one line).

In order to use your LCD (KS0070b), you will have
to manually initialize the KS0070b before you call the
first PicBasic LCDOUT.

Below you can find the pseudo code + a table.

Best regards,

Luciano


See PDF page 32 for the initialization of the KS0070B in 4 bit mode
http://www.ee.oulu.fi/research/tklab...river-3316.pdf

KS0070b Initialization

2x16 LCD (KS0070b)
4 bit mode
2 lines
Display=on
Cursor=off
Blink=off
Increment mode
Entire shif=off

(Pseude-code, same as the table below).

==============================================
Power on  
(PIC and LCD module).
==============================================
Wait 40 ms
==============================================

(Function Set)

------------------
Set the LCD pins: 
DB7,DB6,DB5,DB4 = 0010

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 
------------------
Set the LCD pins:
DB7,DB6,DB5,DB4 = 0010

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs)
------------------
Set the LCD pins:
DB7,DB6,DB5,DB4 = 1000 (2 lines, 5x7 dots)

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs)
------------------
==============================================
Wait 100 µs
==============================================

(Display On/Off Control)

Set the LCD pins: 
DB7,DB6,DB5,DB4 = 0000 

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs)
 
Set the LCD pins: 
DB7,DB6,DB5,DB4 = 1100 (Display on, cursor off, blink off).

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 

==============================================
Wait 100 µs
==============================================

(Clear display)

Set the LCD pins:
DB7,DB6,DB5,DB4 = 0000 

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 

Set the LCD pins:
DB7,DB6,DB5,DB4 = 0001

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 

==============================================
Wait 2 ms
==============================================

(Entry Mode Set)

Set the LCD pins:
DB7,DB6,DB5,DB4 = 0000

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 

Set the LCD pins:
DB7,DB6,DB5,DB4 = 0110 (Incremet mode, entire shif off). 

Toggle the Enable line:
PULSOUT Enable_Pin,100 (min.100 µs) 

==============================================
Wait 2 ms
==============================================


End of the KS0070b Initialization.