Subversion Repositories wb_lcd

//////////////////////////////////////////////////////////////////////

////                                                              ////

////  lcd_defines.v                                               ////

////                                                              ////

////  This file is part of:                                       ////

////  WISHBONE/MEM MAPPED CONTROLLER FOR LCD CHARACTER DISPLAYS   ////

////  http://www.opencores.org/projects/wb_lcd/                   ////

////                                                              ////

////  Description                                                 ////

////   - Set of core customization defines.                       ////

////                                                              ////

////  To Do:                                                      ////

////   - nothing really                                           ////

////                                                              ////

////  Author(s):                                                  ////

////   - José Ignacio Villar, jose@dte.us.es , jvillar@gmail.com  ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2009 José Ignacio Villar - jvillar@gmail.com   ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 3 of the License, or (at your option) any     ////

//// later version.                                               ////

////                                                              ////

//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE.  See the GNU Lesser General Public License for more ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from http://www.gnu.org/licenses/lgpl.txt                    ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

`timescale 1ns / 1ps

///

/// LCD Controller defines

///

`define ADDR_WIDTH 7                    // Address bus width

`define ADDR_RNG `ADDR_WIDTH-1:0 // Address bus range

`define DAT_WIDTH 8                     // data bus width

`define DAT_RNG `DAT_WIDTH-1:0           // Address bus range

`define MEM_LENGTH 67                   // Number of LCD memory positions.

`define MEM_ADDR_WIDTH 7                // Memory address bus width

`define MEM_LOW1  `ADDR_WIDTH'h00 //0   // Memory address of the first character at the first line

`define MEM_HIGH1 `ADDR_WIDTH'h15 //21  // Memory address of the last character at the first line

`define MEM_LOW2  `ADDR_WIDTH'h40 //64  // Memory address of the first character at the second line

`define MEM_HIGH2 `ADDR_WIDTH'h55 //85  // Memory address of the last character at the second line

`define INIT_DELAY_COUNTER_WIDTH 20     // Delay cycle counter width for init & main FSM

`define TX_DELAY_COUNTER_WIDTH 11       // Delay cycle counter width for TX FSM

`define _1MS_DELAY_CYCLES 50            // Number of cycles for a 1ms delay

///

/// WB wrapper defines

///

// WB interface

`define WB_DAT_WIDTH 32                 // WB data bus width

`define WB_DAT_RNG `WB_DAT_WIDTH-1:0     // WB data bus range

`define WB_ADDR_WIDTH 32                // WB address bus width

`define WB_ADDR_RNG `WB_ADDR_WIDTH-1:0   // WB address bus range

`define WB_BSEL_WIDTH 4                 // WB byte sel bus width

`define WB_BSEL_RNG `WB_BSEL_WIDTH-1:0   // WB byte sel bus range

`define ADDRESS_BIT

// Command and status registers address mask

`define SPECIAL_REG_ADDR_MASK 32'h00000080

// LCD characters memory mapping

`define FIRST_LCD_ADDR 0                 // Address at where first LCD character is mapped (0)

// Command register and command codes

`define COMMAND_REG_ADDR 32'h00000080           // Address at where command register is mapped (128)

`define COMMAND_NOP_CODE 32'h00000000           // Code for repaint command     

`define COMMAND_REPAINT_CODE 32'h00000001       // Code for repaint command

// Status register and status codes

`define STATUS_REG_ADDR 32'h00000080            // Address at where status register is mapped (129)

`define STATUS_IDDLE_CODE 32'h00000000          // Code for iddle status

`define STATUS_BUSY_CODE 32'h00000001           // Code for busy status