lcd interfacing problem

[tushar]

recently i made the connnections for a 16*2  jhd162a lcd to interface with atmega 16..the connections are fine but i do not get the required output,instead i get a blank first row and black boxes on second row…plz help me out!

[Syed Aameer]

Check the RS ,R/W and En pin s. verify that you have entered the correct port pins that you have connected.

May be because of intial commands it may also happen

lcd_cmd(0x01)

lcd_cmd(0x38)

lcd_cmd(0x06)

lcd_cmd(0x0E)

 

Otherwise the delay of minimum of 2ms is required when Enable is made high to low

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