[SOLVED] LCD not displaying anything with AT89C52

[shigha]

My LCD is only showing the backlight. No characters are shown. while working, I checked the microcontroller pins and they are all working properly. While connecting LCD, i have not given any resistance to backlight. Is that a problem? Would that cause, my LCD to burn?

 

[jayanth.devarayanadurga]

Post your code. Are you doing the project on Breadboard? If yes, Loose connection is your problem. Post your Circuit.

 

[shigha]

Yes Iam doing project on breadboard. The proteus simulation was ok. TO CHECK MY LCD, I just connected 16 pin to gnd and 15 pin to +5v. Only backlight was lit.?

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This is my code

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Iam using JHD162A

 

[jayanth.devarayanadurga]

I don't have word installed on my system. Post your code or attach it as a .txt file. If you are using breadboard then using HS OSC might also be a problem.

 

[shigha]

What is HS OSC

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TO CHECK MY LCD, I just connected 16 pin to gnd and 15 pin to +5v. Only backlight was lit.There was nothing on any rows

 

[ark5230]

You are describing pin 15 and pin 16, hope you have connected the data and control pins as well. Without these connection and some timing and delay manipulation you cant expect any thing on display. It would have been nice if you could have attached the circuit schematic so that experts could come up with to the point solution.

 

[jayanth.devarayanadurga]

Try this new code. HS OSC is high Speed Oscillator like 8 MHz and higher.

 

[shigha]

I got my problem. It was the pin 3. It must be connected to ground for high contrast of characters