need a simple example in VHDL for LCD display 16x2

[G4rry]

hi, I need some simple example in VHDL for LCD display 16x2 on board "Xilinx Spartan 3AN" I need inspiration to get started programming. Please someone advice me how to write for example character "A" on the screen.

 

[bigdogguru]

The Spartan 3AN board has an eight-bit data interface to the character LCD. Other Xilinx boards use a four-bit interface. As shown in Figure 5-1, the Spartan-3A/3AN Starter Kit board supports both an eight-bit and a four-bit interface for compatibility reasons, for existing reference designs are already built around a four-bit interface.

If you don't already have a copy of the User Guide for the Spartan 3AN Board, download a copy. You'll need to build the UCF from the information contained in the PDF.

Xilinx Spartan 3AN Starter Board

Digilent actually manufactures the board, so you can use there examples to write your own VHDL implementation.



FPGA4Fun TEXT LCD Verilog Code - Great website with nice examples

You should be able to download the UG for the board and build a UCF, use the VHDL sample code for your LCD from Digilent and implement a working interface.

Also Xilinx has a resource design which makes use of the LCD, code and docs:

Demos and UCFs

Hope this gets you rolling in the right direction.