用FPGA编写12864显示的程序,跪求。。。可以显示就行,内容可以是字母。。谢谢

用FPGA编写12864显示的程序,跪求。。。可以显示就行,内容可以是字母。。谢谢,第1张

/*LCD12864显示程序

此程序控制LCD12864液晶屏,IC为KS0108或兼容型号

图形文件获取方法:

在字模提取V21软件中 ,导入一幅128*64黑白图像.

* 参数设置:

* 参数设置->其它选项,选择纵向取模,勾上字节倒序,保留逗号,

* 取模方式为C51。

将生成的数组通过keilc等C编译软件,在编译软件中新建一工程,写入源程序如下:

unsigned char code tab[]=

{

//图像数据

}

编译此工程将得到hex文件.在QII中使用lpm_rom宏功能模块中调用此hex文件.

*

*******************************************************************************/

module newlcd(clock,rst_n,rs,rw,en,data,lcd_cs)

// I/O口声明

input clock //系统时钟

input rst_n //复位信号

output[1:0] lcd_cs //

outputrs //1:数据模式;0:指令模式

outputrw //1:读 *** 作;0:写 *** 作

outputen //使能信号,写 *** 作时在下降沿将数并答亩据举肢送出;读 *** 作时保持高电平

output[7:0] data//绝森LCD数据总线

// I/O寄存器

reg rs

reg en

reg[1:0] lcd_cs

reg[7:0] data

//内部寄存器

reg[3:0] state //状态机

reg[3:0] next_state

reg[20:0] div_cnt //分频计数器

reg[9:0] cnt //写 *** 作计数器

reg cnt_rst //写 *** 作计数器复位信号

wire[7:0] showdata //要显示的数据

reg[1:0] cs_r

reg [2:0] page_addr

reg [5:0] row_addr

//内部网线

wire clk_div//分频时钟

wire clk_divs

wire page_done //写一行数据完成标志位

wire frame_done //写一屏数据完成标志位

wire left_done

//状态机参数

parameter idle =4'b0000,

setbase_1=4'b0001,

setbase_2=4'b0011,

setmode_1=4'b0010,

setmode_2=4'b0110,

SETpage_addr_1=4'b0111,

SETpage_addr_2=4'b0101,

SETrow_addr_1 =4'b1101,

SETrow_addr_2 =4'b1111,

write_right_1 =4'b1110,

write_right_2 =4'b1010,

write_nextpage_1 =4'b1011,

write_nextpage_2 =4'b1001,

wr_data_1 =4'b0100,

wr_data_2 =4'b1100

// set_1=4'b1000

//******************************代码开始*********************************

assign rw = 1'b0 //对LCD始终为写 *** 作

//时钟分频

always@(posedge clock or negedge rst_n)

begin

if(!rst_n)

div_cnt <= 0

else

div_cnt <= div_cnt+1'b1

end

assign clk_div = (div_cnt[15:0] == 20'h7fff)

//状态机转向

always@(posedge clock or negedge rst_n)

begin

if(! rst_n)

state <= idle

else if(clk_div)

state <= next_state

end

//************************状态机逻辑*********************************

always@(state or page_done or left_done or frame_done or cnt or showdata or page_addr or row_addr or cs_r)

begin

rs <= 1'b0

en <= 1'b0

lcd_cs <= cs_r

cnt_rst <= 1'b0

data <= 8'h0

case(state)

idle:

begin

next_state <= setbase_1

cnt_rst <= 1'b1

end

//**************************初始化LCD********************************

setbase_1: //基本指令 *** 作

begin

lcd_cs <= 2'b11

next_state <= setbase_2

data <= 8'hc0

en <= 1'b1

end

setbase_2:

begin

lcd_cs <= 2'b11

next_state <= setmode_1

data <= 8'hc0

end

//******************************************************************

setmode_1:

begin

lcd_cs <= 2'b11

next_state <= setmode_2

data <= 8'h3f

en <=1'b1

end

setmode_2:

begin

next_state <= SETpage_addr_1

data <= 8'h3f

end

//******************************************************************

SETpage_addr_1: //设置页地址

begin

next_state <= SETpage_addr_2

data <=

en <= 1'b1

end

SETpage_addr_2:

begin

next_state <= SETrow_addr_1

data <=

end

SETrow_addr_1: //设置列地址

begin

next_state <= SETrow_addr_2

data <=

en <= 1'b1

end

SETrow_addr_2:

begin

next_state <= wr_data_1

data <=

end

//******************************************************************

/*

write_right_1: //写完左半屏64个,换为右半屏显示

begin

next_state <=write_right_2

row_addr <= 0

end

write_right_2:

begin

next_state <= SETpage_addr_1

end

//******************************************************************

write_nextpage_1: //写完全一行128个

begin

next_state <=write_nextpage_2

row_addr <= 0

end

write_nextpage_2:

begin

next_state <= SETpage_addr_1

end

*/

//******************************************************************

wr_data_1: //写数据到图形显示区

begin

next_state <= wr_data_2

rs <= 1'b1

en <= 1'b1

data <= showdata

end

wr_data_2:

begin

rs <= 1'b1

data <= showdata

if(left_done) //写完左半屏数据64个

begin

if(page_done) //写完一页数据128个

begin

if(frame_done) //写完一屏数据(8页)

next_state <= idle

else

// next_state <= write_nextpage_1

next_state <= SETpage_addr_1

end

else

// next_state <= write_right_1

next_state <= SETpage_addr_1

end

else

next_state <= wr_data_1

end

default: next_state <= idle

endcase

end

//********************************************************************

always@(posedge clock)

begin

if(clk_div)

begin

if(cnt_rst)

begin

cnt <= 0

end

else if(state == wr_data_2)

begin

cnt <= cnt+1'b1

end

end

end

//****************************************************

always@(posedge clock or negedge rst_n)

if(!rst_n)

begin

cs_r <= 2'b01

page_addr <= 0

end

else

if(clk_div &&(state == wr_data_2))

if(page_done)//

begin

cs_r <= 2'b01

page_addr <= page_addr + 1'b1//一页写完时写下一页

end

else

if(left_done)

begin

cs_r <= 2'b10

end

//*********************************************************************

//********************************************************************

assign left_done = (cnt[5:0] == 6'd63) //写完左半屏数据64个

assign page_done = (cnt[6:0] == 7'd127) //写完一页数据128个

assign frame_done = (cnt[9:4] == 7'h3f) //写完一屏数据

//***********************************************************************

//*******************************************************************

//调用ROM(图片数据)

rom rom(.address(cnt+'d8),.clock(clock),.q(showdata))

endmodule

开发板例程 自己看吧

我可以帮助你,你先设置我最佳答案后,我百度Hii教你。

`timescale 1ns / 1ps

///////////////////////////////////////////////////////////////搏返///////////////////

// Company:anlogic

/兄宏/ Engineer: liguang

//

// Create Date:11:07:14 02/17/2014

// Design Name:

// Module Name:lcd1602

// Project Name:

// Target Devices:

// Tool versions:

// Description:

//

// Dependencies:

//

// Revision:

// Revision 0.01 - File Created

// Additional Comments:

//

///////基尘饥///////////////////////////////////////////////////////////////////////////

module lcd1602(sys_clk,

sys_rstn ,

lcd_rs ,

lcd_rw ,

lcd_en ,

lcd_data

)

//输入输出信号定义

input sys_clk//系统时钟输入

input sys_rstn //系统复位信号,低电平有效

output lcd_rs //lcd的寄存器选择输出信号

output lcd_rw //lcd的读、写 *** 作选择输出信号

output lcd_en //lcd使能信号

output [7:0] lcd_data //lcd的数据总线(不进行读 *** 作,故为输出)

//寄存器定义

reglcd_rs

regclk_div

reg [17:0] delay_cnt

reg [7:0] lcd_data

reg [4:0] char_cnt

reg [7:0] data_disp

reg [9:0] state

parameteridle = 10'b000000000, //初始状态,下一个状态为CLEAR

clear = 10'b000000001, //清屏

set_function = 10'b000000010, //功能设置:8位数据接口/2行显示/5*8点阵字符

switch_mode = 10'b000000100, //显示开关控制:开显示,光标和闪烁关闭

set_mode = 10'b000001000, //输入方式设置:数据读写 *** 作后,地址自动加一/画面不动

shift= 10'b000010000, //光标、画面位移设置:光标向左平移一个字符位(光标显示是关闭的,所以实际上设置是看不出效果的)

set_ddram1 = 10'b000100000, //设置DDRAM的地址:第一行起始为0x00(注意输出时DB7一定要为1)

set_ddram2 = 10'b001000000, //设置DDRAM的地址:第二行为0x40(注意输出时DB7一定要为1)

write_ram1 = 10'b010000000, //数据写入DDRAM相应的地址

write_ram2 = 10'b100000000 //数据写入DDRAM相应的地址

assign lcd_rw = 1'b0 //没有读 *** 作,R/W信号始终为低电平

assign lcd_en = clk_div//E信号出现高电平以及下降沿的时刻与LCD时钟相同

//时钟分频

always@(posedge sys_clk or negedge sys_rstn)

begin

if(!sys_rstn)

begin

delay_cnt<=18'd0

clk_div<=1'b0

end

else if(delay_cnt==18'd249999)

begin

delay_cnt<=18'd0

clk_div<=~clk_div

end

else

begin

delay_cnt<=delay_cnt+1'b1

clk_div<=clk_div

end

end

always@(posedge clk_div or negedge sys_rstn) //State Machine

begin

if(!sys_rstn)

begin

state <= idle

lcd_data <= 8'b0

char_cnt <= 5'd0

lcd_rs<=1'b0

end

else

begin

case(state)

idle: begin //初始状态

state <= clear

lcd_data <= 8'b0

end

clear: begin //清屏

state <= set_function

lcd_rs<=1'b0

lcd_data <= 8'b00000001

end

set_function: //功能设置(38H):8位数据接口/2行显示/5*8点阵字符

begin

state <= switch_mode

lcd_rs<=1'b0

lcd_data <= 8'b00111000

end

switch_mode: //显示开关控制(0CH):开显示,光标和闪烁关闭

begin

state <= set_mode

lcd_rs<=1'b0

lcd_data <= 8'b00001110

end

set_mode:begin //输入方式设置(06H):数据读写 *** 作后,地址自动加一/画面不动

state <= shift

lcd_rs<=1'b0

lcd_data <= 8'b00000110

end

shift: begin //光标、画面位移设置(10H):光标向左平移一个字符位(光标显示是关闭的,所以实际上设置是看不出效果的)

state <= set_ddram1

lcd_rs<=1'b0

lcd_data <= 8'b0001_0000

end

set_ddram1: //设置DDRAM的地址:第一行起始为00H(注意输出时DB7一定要为1)

begin

state <= write_ram1

lcd_rs<=1'b0

lcd_data <= 8'b1000_0011//Line1

end

set_ddram2: //设置DDRAM的地址:第二行为40H(注意输出时DB7一定要为1)

begin

state <= write_ram2

lcd_rs<=1'b0

lcd_data <= 8'b1100_0000//Line2

end

write_ram1:

begin

if(char_cnt <=5'd10)

begin

char_cnt <= char_cnt + 1'b1

lcd_rs<=1'b1

lcd_data <= data_disp

state <= write_ram1

end

else

begin

state <= set_ddram2

end

end

write_ram2:

begin

if(char_cnt <=5'd26)

begin

char_cnt <= char_cnt + 1'b1

lcd_rs<=1'b1

lcd_data <= data_disp

state <= write_ram2

end

else

begin

char_cnt <=5'd0

state <= shift

end

end

default: state <= idle

endcase

end

end

always @(char_cnt) //输出的字符

begin

case (char_cnt)

5'd0: data_disp = "W"

5'd1: data_disp = "e"

5'd2: data_disp = "l"

5'd3: data_disp = "c"

5'd4: data_disp = "o"

5'd5: data_disp = "m"

5'd6: data_disp = "e"

5'd7: data_disp = " "

5'd8: data_disp = "t"

5'd9: data_disp = "o"

5'd10: data_disp = " "

5'd11: data_disp = "A"

5'd12: data_disp = "n"

5'd13: data_disp = "l"

5'd14: data_disp = "o"

5'd15: data_disp = "g"

5'd16: data_disp = "i"

5'd17: data_disp = "c"

5'd18: data_disp = " "

5'd19: data_disp = "2"

5'd20: data_disp = "0"

5'd21: data_disp = "1"

5'd22: data_disp = "4"

5'd23: data_disp = "0"

5'd24: data_disp = "3"

5'd25: data_disp = "1"

5'd26: data_disp = "3"

default : data_disp =" "

endcase

end

endmodule

你只要把最后一个CASE语句里面welcome to anlogic 改掉就行了。(anlogic FPGA)

你好仔缺斗!

首先先确定DS90CR工作正常。然后再验扮塌证FPGA的程序。你提供的信息太少了,可以的话念磨,在FPGA里用chipscope抓下输出波形贴上来看下。当然,最好的是直接用示波器看了。

如果对你有帮助,望采纳。


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原文地址: http://outofmemory.cn/yw/12403052.html

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