每天进步一点点------SOPC的Avalon-MM IP核(四) KEY_LED IP定制

  /*********************************************************************************
 * Company                    :
 * Engineer                    : 空气微凉
 *
 * Create Date                : 00:00:00 22/03/2013
 * Design Name                :
 * Module Name                :
 * Project Name                :
 * Target Devices            :
 * Tool versions                :
 * Description                :
 *                                   http://www.cnblogs.com/kongqiweiliang/
 * Dependencies                :
 *                                Avalon_MM_Slave_IP
 * Revision                    :
 * Revision                    : 0.01 - File Created
 * Additional Comments        :
 ********************************************************************************/
 `timescale 1ns/1ps
 `define    UD  #
 /*******************************************************************************/
 module Avalon_MM_Slave_KEY_LED
 (
     //clock input
     input                                         icsi_clk            ,//
     input                                         ireset_n             ,//
     //Avalon_MM_Slave interface
     input                                         iavs_chipselect        ,//片选信号
     input                                        iavs_address        ,//地址,译码后确定寄存器offset
     input                                         iavs_write            ,//写使能信号
     input                            [:]         iavs_writedata        ,//32位写数据值
     input                                         iavs_read            ,//读时能信号
     output  reg                        [:]         oavs_readdata        ,//32位读数据值
     input                            [ :]        iavs_byteenable        ,//字节使能信号
     //hardware interface(Conduit End)
     input                            [:]        iavs_export_KEY        ,//
     output  reg                        [:]        oavs_export_LEDR     //
 );
 //-------------------------------------------------------------------------------
 //
 reg  [:]  oavs_export_LEDR_N;
 always@(posedge icsi_clk or negedge ireset_n)begin
     if(!ireset_n)
         oavs_export_LEDR <= 'h0;
     else
         oavs_export_LEDR <= oavs_export_LEDR_N;
 end
 always@(*)begin
     if(iavs_chipselect && iavs_write && (iavs_address == 'h0))
         oavs_export_LEDR_N = iavs_writedata[:];
     else
         oavs_export_LEDR_N = oavs_export_LEDR;
 end
 //
 reg  [:]  oavs_readdata_N;
 always@(posedge icsi_clk or negedge ireset_n)begin
     if(!ireset_n)
         oavs_readdata <= 'h0;
     else
         oavs_readdata <= oavs_readdata_N;
 end
 always@(*)begin
     if(iavs_chipselect && iavs_read && (iavs_address == 'h1))
         oavs_readdata_N = iavs_export_KEY;
     else
         oavs_readdata_N = oavs_readdata;
 end
 //-------------------------------------------------------------------------------
 endmodule 

 /*********************************************************************************
 * Company                   :
 * Engineer                  : 空气微凉
 *
 * Create Date               : 00:00:00 22/03/2013
 * Design Name               :
 * Module Name               :
 * Project Name              :
 * Target Devices            :
 * Tool versions             :
 * Description               :
 *
 * Dependencies              :
 *
 * Revision                  :
 * Revision                  : 0.01 - File Created
 * Additional Comments       :
 ********************************************************************************/
 #include <stdio.h>
 #include <string.h>
 #include "system.h"
 #include "altera_avalon_pio_regs.h"
 #include "alt_types.h"
 #include "unistd.h"

 #define  LED(data)      IOWR(KEY_LED_BASE, 0, data)
 #define  KEY            IORD(KEY_LED_BASE, 1) 

 unsigned int i;

 int main(void)
 {

     while()
     {
         i = KEY;
         LED(i);
     }
 }