problem regarding interfacing LCD using ATMEGA16 code of your tutorial

[Chinmay Chinara]

I am using the JHD162A LCD and based on the tutorial code.The connections are made as per the tutorial circuit diagram. But instead of showing an ‘A’ on the screen what I see is the backlit display is on and the first line of the screen is filled with black squares. Even if I increase or decrease the contrast pot only the black sqares become dark or light and no other output is obtained. Kindly help me out with it !!!!!!!!

[kari]

Are you using KS0066 circuit to interfase between mcu and lcd? If you make many status request of KS0066 too fast. KS0066 can not work correctly. It coming slow or not work rigth.

 

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