LCD - something wrong

kulisek · Joined: 04 Jul 2006 Posts: 51

Hi,

I use LCD with ST7565R driver 128*64. I use glcdEADOGM128x6.lbx. Almost all is OK but at left side of LCD are shown some random pixels.
Can anybody told me what is it ? I tested 3 LCD with the same result.

Thanks

(BASCOM-AVR version : 2-0.7.7. , Latest : 2.0.7.8 )

kimmi · Joined: 24 Feb 2006 Posts: 1922 Location: Denmark

Hi,
we need more info like what mcu , crystal , on pcb or breadboard (long wires) , did you update bascom ?

albertsm · Joined: 09 Apr 2004 Posts: 6198 Location: Holland

check your LCDAT x and y parameters, my guess is you are using 0 and not 1 as minimum value.

kulisek · Joined: 04 Jul 2006 Posts: 51

The same problem is after CLS only When I rotate screen then are these pixels on the same place - random pixels are not rotated. Connection of LCD is as short as possible. All texts sent to LCD are OK.
I have rotated screen with Const Eadogm_rotate = 1. LCDAT x = 0 or 1 - the text is not over these pixel. Random pixels done some offset of the text on LCD.
Non rotated text is moved 2 pixels left out of LCD.

Atxmega32E5 - 24MHz

Bascom now 2.0.7.8.

O-Family · Joined: 23 May 2010 Posts: 338 Location: Japan

Because ST7565R is a controller of 65x132dot, you must have an offset to the waterside of the dot address if you invert the screen.
In Const Eadogm_rotate = 1, if garbage comes out, it might be good to be rid of offset of "glcdEADOGM128x6.lib".

Please look to try the following library.

kulisek · Joined: 04 Jul 2006 Posts: 51

It is OK now

T H A N K S ! ! !