[SOLVED] JHD162A problem, LCD doesn't display anything.

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jayanth.devarayanadurga

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Does mikroC LCD Library work with JHD162A LCD. I am trying to display some text on JHD162A lcd using mikroC 4 bit lcd library and the lcd doesn't disply any thing. If anybody hace working C Code for JHD162A LCD please post it.
 

jayanth.devarayanadurga said:
Does mikroC LCD Library work with JHD162A LCD. I am trying to display some text on JHD162A lcd using mikroC 4 bit lcd library and the lcd doesn't disply any thing.
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The JHD162A utilizes an HD44780 compatible controller, therefore it should be compatible with the mikroC 16x2 LCD library routines.

Perhaps the unit is damaged or there is a variation on the pinout. You can test the LCD using the step in the following blog:



BigDog
 
Thank you. It is the exact LCD I am having. I checked the connections 10 times and everything is ok but LCD doesn't display anything. The project also has UART code and is working. I confirmed that by using a led to turn on if valid data is received. I am posting the code. Please somebody test it with JHD162A lcd and tell me if the code is working.

I have connected VDd to +5V and Vss to ground and LED+ to +5V and LED- to GND. backlight is turning ON but LCD doesn't display anything. I am using a 9V Duracell and 7805 regulator to get 5V supply.

I am attaching the exact circuit I am using. D0 to D4 is connected to GND.



Edit: Problem Solved. The LCD was damaged. I replaced the LCD and everything works fine.
 

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