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Graphical LCD interfacing with Atmega16

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sukhdeepmankoo

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Dear Sir,
I am trying to interface GDM12864A 128*64 Graphical LCD with ATmega16. I want to read the data at any line. how can i read it. I have read the data sheet and has written the following program.

unsigned char lcm_read()
{ unsigned char read;
LCD_DATA_DDR=0;
delay(30);
LCD_CONTROL_PORT|=((1<<DI)|(1<<RW)|(1<<EN));
delay(30);
read=LCD_DATA_PIN;
LCD_DATA_DDR=0xff;
delay(30);
LCD_CONTROL_PORT&=((1<<EN));
delay(30);
return read;
}

kindly tell me, how can i read the data from LCM.
Thanks & Regards
 

Hi,

Just first understand all the interfacing connection between microcontroller & Graphical LCD.
Than try for Low level coding which u will find out by reading data sheet of Graphical LCD correctly.
Try to generate some character on ur display.
Don't frustrate just be cool & try.

Regards,
Chanchal
 

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