天天進步一點點------SOPC的Avalon-MM IP核(四) KEY_LED IP定製

 

 1  /*********************************************************************************
 2 * Company                    : 
 3 * Engineer                    : 空氣微涼
 4 * 
 5 * Create Date                : 00:00:00 22/03/2013 
 6 * Design Name                : 
 7 * Module Name                :         
 8 * Project Name                :  
 9 * Target Devices            : 
10 * Tool versions                : 
11 * Description                :  
12 *                                   http://www.cnblogs.com/kongqiweiliang/             
13 * Dependencies                : 
14 *                                Avalon_MM_Slave_IP
15 * Revision                    : 
16 * Revision                    : 0.01 - File Created
17 * Additional Comments        : 
18 ********************************************************************************/
19 `timescale 1ns/1ps
20 `define    UD  #1
21 /*******************************************************************************/
22 module Avalon_MM_Slave_KEY_LED
23 ( 
24     //clock input
25     input                                         icsi_clk            ,// 
26     input                                         ireset_n             ,// 
27     //Avalon_MM_Slave interface  
28     input                                         iavs_chipselect        ,//片選信號
29     input                                        iavs_address        ,//地址,譯碼後肯定寄存器offset
30     input                                         iavs_write            ,//寫使能信號
31     input                            [31:0]         iavs_writedata        ,//32位寫數據值
32     input                                         iavs_read            ,//讀時能信號
33     output  reg                        [31:0]         oavs_readdata        ,//32位讀數據值
34     input                            [3 :0]        iavs_byteenable        ,//字節使能信號
35     //hardware interface(Conduit End)    
36     input                            [17:0]        iavs_export_KEY        ,//
37     output  reg                        [17:0]        oavs_export_LEDR     //
38 );  
39 //-------------------------------------------------------------------------------
40 //
41 reg  [17:0]  oavs_export_LEDR_N;
42 always@(posedge icsi_clk or negedge ireset_n)begin
43     if(!ireset_n)
44         oavs_export_LEDR <= 18'h0;
45     else
46         oavs_export_LEDR <= oavs_export_LEDR_N;
47 end
48 always@(*)begin
49     if(iavs_chipselect && iavs_write && (iavs_address == 1'h0))
50         oavs_export_LEDR_N = iavs_writedata[17:0];
51     else
52         oavs_export_LEDR_N = oavs_export_LEDR;
53 end
54 //
55 reg  [31:0]  oavs_readdata_N;
56 always@(posedge icsi_clk or negedge ireset_n)begin
57     if(!ireset_n)
58         oavs_readdata <= 32'h0;
59     else
60         oavs_readdata <= oavs_readdata_N;
61 end
62 always@(*)begin
63     if(iavs_chipselect && iavs_read && (iavs_address == 1'h1))
64         oavs_readdata_N = iavs_export_KEY;
65     else
66         oavs_readdata_N = oavs_readdata;
67 end
68 //-------------------------------------------------------------------------------
69 endmodule 

 1 /*********************************************************************************
 2 * Company                   : 
 3 * Engineer                  : 空氣微涼
 4 * 
 5 * Create Date               : 00:00:00 22/03/2013 
 6 * Design Name               : 
 7 * Module Name               :        
 8 * Project Name              :  
 9 * Target Devices            : 
10 * Tool versions             : 
11 * Description               :  
12 *                                   
13 * Dependencies              : 
14 *
15 * Revision                  : 
16 * Revision                  : 0.01 - File Created
17 * Additional Comments       : 
18 ********************************************************************************/
19 #include <stdio.h>
20 #include <string.h>
21 #include "system.h"
22 #include "altera_avalon_pio_regs.h"
23 #include "alt_types.h"
24 #include "unistd.h"
25 
26 #define  LED(data)      IOWR(KEY_LED_BASE, 0, data)
27 #define  KEY            IORD(KEY_LED_BASE, 1) 
28 
29 unsigned int i;
30 
31 int main(void)
32 {
33  
34     while(1)
35     {
36         i = KEY;
37         LED(i);         
38     }
39 }