Cfag240128d-tmi-tz

[Puddenhead]

I am wanting to use this LCD in graphic mode. Is there a chip select on this lcd. Do i need to seperate columns and rows. I am trying to write an initialize program in C to run off of avr chip. like do i seperate the columns between pixals 1-80, 81-160, 160-240. and sort rows between pixals 1-64 and 64-128. i noticed most lcd seperate the columns between two chips. i need to know how this one is set up and how to program it. i cant find it in the wintest.zip program that i was told to look at.

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[v8dave]

Hi there,

Have you got the datasheet? On page 7 is shows PIN 15 as the chip select. Also note that this display has an E (enable) input too.

As for drivers, according to a quick search, the LC7981 seems to be compatible with the older Hitachi HD61830 so you should be able to find a driver for this. Ramtex have a very good one but it will cost you $550 and unless this is a commercial product, that is not going to be worth it to you to purchase this.

You can do a search for AVR drivers. I found this one.

http://www.frozeneskimo.com/electronics/2007/03/30/lc7981hd61830-driver-for-el-backlit-samsung-lcd/

Good luck and have fun.
Dave...

 

[CF Support]

Puddenhead -

If you will send an email to support@crystalfontz.com we can get you some code for an AVR for that display.

 

[Puddenhead]

I have have already emailed. user name is jasaevan@gmail.com. I have the CFAG_WinTestDlg.cpp file i am confused on what

CWaitCursor wait;
switch(m_address.GetCurSel())
{
case 1:
port_data_address=0x278;
break;
case 2:
port_data_address=0x3BC;
break;
default:
port_data_address=0x378;
break;
}
port_control_address=port_data_address+2;

means. I am trying to write an initialize driver program for lcd. I want to set it up so i can give a x,y position to start at and then the hex array of what to write.

 

[cosmicvoid]

switch(m_address.GetCurSel())
{
case 1:
port_data_address=0x278;
break;
case 2:
port_data_address=0x3BC;
break;
default:
port_data_address=0x378;
break;
}
port_control_address=port_data_address+2;

This code is strictly for PC parallel port addressing, and is of no use for AVR control of a display.

 

[CF Tech]

Puddenhead: I attached some demo code for the AVR and that display to your ticket.