Andy's Workshop Forums

General Category => General discussion => Topic started by: Василий Пупки on March 01, 2015, 07:31:46 am

Title: Nokia 6270 LCD and Arduino Uno
Post by: Василий Пупки on March 01, 2015, 07:31:46 am
Hi, I'm trying to get to work nokia 6270 display with Arduino Uno (Atmega328p). I use manual for 6300 and Arduino Uno:
http://andybrown.me.uk/wk/2012/07/28/interfacing-the-nokia-6300-qvga-tft-to-the-standard-arduino/

I connected  the display in accordance with the scheme:
















































































| Function | LCD pin | Uno pin |
D060
D1181
D282
D3173
D494
D5155
D6106
D7147
WR(WRX)58
RS(DCX)199
CS(CSX)11GND
VIO(VDDI)3+3.3
VDD22+3.3
RESET(RESX)12+3.3


Pinout of connector I found here:
http://andybrown.me.uk/wk/2012/06/05/nokia-lcd-for-arduino-mega-1/
(http://i0.wp.com/andybrown.me.uk/wk/wp-content/images//arduino6300/connectorPinout.png)

Then I installed library for Arduino Mega from here (for use with Arduino Uno):
http://andybrown.me.uk/wk/files/xmemtft-3.0.2.zip

I opened example project "xmemtft-->AllPenels-->Line".
I replaced the code:
//typedef Nokia6300_Landscape_262K TftPanel;
typedef Nokia6300_Landscape_262K_Gpio TftPanel;

to compile for Arduino Uno.

When Arduino start, TX Led lights on Arduino board.

LCD does not respond.

In the wiring diagram LED_1 is connected to LED_2+, and the backlight power is supplied to LED_1+ and LED_2-. My backlights work if I connect power to LED_1 and LED_1+ or LED_2 and LED_2+.

May be someone already worked with this display and knows how to make him work?
may be initializing doing differently?


Title: Re: Nokia 6270 LCD and Arduino Uno
Post by: Andy Brown on March 01, 2015, 09:17:45 am
Hi, my project is for the Nokia 6300 LCD. Have you obtained the service manual for the 6270 and verified that the pinout is identical to the 6300?

Regards,
- Andy
Title: Re: Nokia 6270 LCD and Arduino Uno
Post by: Василий Пупки on March 01, 2015, 01:34:08 pm
May be I'm stupid, but I can't find display connector on nokia 6270 schematics.
In schematics I found that the signals on the display go through the filter, then to board to board connector and then to RAPGSM. Where Display connector??
https://dl.dropboxusercontent.com/u/25895838/6270_schematics.pdf
I looked schematics other phones, including 6300, they have a schematic of the display connector.

Title: Re: Nokia 6270 LCD and Arduino Uno
Post by: Andy Brown on March 02, 2015, 02:22:27 pm
The signals are there on "X2400" a 40-pin board-to-board connector. This is a slide phone. It's different to all the others I've looked at because it has two main boards that will be connected together by the board-to-board connectors and some flex cable. The usual 24-pin JST connector that they use is not present in the schematic you've posted.
Title: Re: Nokia 6270 LCD and Arduino Uno
Post by: Василий Пупки on March 03, 2015, 01:01:11 pm
Yes, 24-pin JST connector is not present in the schematic, but on phone board I see him, and display has him.
I called display to search ground, and the ground is on the same pins as the connector for 6300. So I decided that the connectors are compatible, I may be wrong.
I will buy a suitable display and continue to develop devices with it.
Thanks for the help!