[Evaluation and experience of Zhongke Yihaiwei EQ6HL45 development platform] +03. Flowing light simulation and board test (zmj)
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[Evaluation and experience of Zhongke Yihaiwei EQ6HL45 development platform] +03. Flowing light simulation and board test (zmj)
The Zhongke Yihaiwei EQ6HL45 development platform provides a very rich interface test DEMO.
This section uses the simulation and on-board test of the LED water lamp to understand the development process and simulation process of the elinx software to develop FPGA, and also verifies whether the LED lights on the board are normal.
//------Main reference documents
//------eLinx software user manual
UG102_eLinx_Design_Suite_User_Guide_ehiway_v2021.11.pdf
//------Zhongke Yihaiwei EQ6HL45 development board DEMO manual
EQ6HL45FPGA Development Platform User Manual.pdf
02_sim_led
1. Preparation
Zhongke Yihaiwei's eLinx Design Suite uses the third-party software Mentor's ModelSim as a simulation tool. Therefore, before starting the simulation, you need to install Modelsim and configure the eLINX library file.
1.1 ModelSim software installation
My computer uses ModelSim-10.0c, and the specific installation process is not described in detail here.
//------ModelSim installation tutorial
//------ModelSim installation tutorial
https://www.bilibili.com/read/cv14582310?from=search
//------other
1. Laptop: w7 system 64-bit;
2. Software: modelsim-win64-10.6d-se (installation file and crack file)
3. Baidu Cloud download address
Link: https://pan.baidu.com/s/1dGcmGHL2q1wzh2vX1OMm5w
Extraction code: ox09
1.2 eLINX simulation settings
After installing ModelSim, you also need to specify the index directory of the simulation library and simulation software.
The simulation library (Simulation_Library) provides FPGA IP models and other content for third-party software. If it is pure RTL code simulation, there is no need to set this item.
//------ELINX simulation settings of eLINX software
//------ELINX simulation settings of Elinx software (fill in according to the actual path)
//---Simulation library settingsSimulation_Lib:
C:/Program Files (x86)/eHiWay/eLinx2.0/Simulation/elinx_lib
//---Third-party simulation software ModelSim settings:
C:/altera/modeltech64_10.0c/win64
1.3 Project Code
The engineering code flow_led is as follows:
`timescale 1 ps/ 1 ps
///////////////////////////////////////////////////// ////////////////////////////////////
// Company:
// Engineer:
//
// Create Date: 10-28-2021 09:38:40
// Design Name:
// Module Name: flow_led
// Project Name:
// Target Devices:
// Tool Versions:
// Description:
//
// Dependencies:
//
// Revision:
// Additional Comments:
//
///////////////////////////////////////////////////// ////////////////////////////////////
module flow_led(
input sys_clk , //system clock
input sys_rst_n, //system reset, low level is effective
output reg [3:0] led //4 LED lights
);
//reg define
reg [23:0] counter;
//************************************************ *****
//** main code
//************************************************ *****
//The counter counts the system clock and times 0.2 seconds
always @(posedge sys_clk or negedge sys_rst_n) begin
if (!sys_rst_n)
counter <= 24'd0;
else if (counter < 24'd1000_0000)
counter <= counter + 1'b1;
else
counter <= 24'd0;
end
//Control the high and low levels of the IO port through the shift register to change the display state of the LED
always @(posedge sys_clk or negedge sys_rst_n) begin
if (!sys_rst_n)
led <= 4'b0001;
else if(counter == 24'd1000_0000)
led[3:0] <= {led[2:0],led[3]};
else
led <= led;
end
endmodule
2. Simulation
2.1 Simulation Code
The simulation code sim_led is as follows:
`timescale 1 ns/ 1 ps
module sim_led( );
//------parameter
parameter PERIOD_100M = 10; //100MHz = 10ns
//------
reg sys_clk;//100MHz
reg sys_rst_n;//active low
wire [03:00] led;
//------
initial begin
sys_clk = 0;
end
always #(PERIOD_100M / 2) sys_clk = ~sys_clk;
initial begin
sys_rst_n = 0 ;
$display("********************************************** **");
$display("//---This is a simulation for flow_led.");
$display("********************************************** **");
#1_000;
sys_rst_n = 1;
$display("//---Simulation is start.");
$display("//---...");
#1000_000_000 ;//1000ms
$display("//---Simulation is stop.");
$stop();
#1_000_000 ;//1ms
$finish;
end
//------
flow_led u_flow_led(
.sys_clk (sys_clk ), //system clock
.sys_rst_n (sys_rst_n ), //system reset, low level is effective
.led (led ) //4 LED lights
);
endmodule
2.2 Add simulation code
The steps to add simulation code are as follows:
//------Add simulation code
a. Double-click flow_Led.epr to open the flow light project.
b. Right-click Simulation_Sources and select Add_Sources.
c. Create sim_led file.
2.3 Executing Simulation
After completing the above steps, you can perform simulation function testing.
Double-click "Run_Behavioral_Simulation", ModelSim automatically simulates (note: automatically executes simulation code, very-nice), and the simulation is OK.
//------Run simulation steps:
a. Enter the project directory and double-click flow_Led.epr to open the flow light project.
b. Create or add the simulation file sim_led.v.
c. Run the simulation Run_Behavioral_Simulation.
d. At this time, ModelSim will be automatically opened and the simulation instruction "run -all" will be automatically executed to start executing the simulation code.
3. Board test
The board test steps are as follows, and the board verification is OK:
//------Board test
//---Prepare:
a. Compile the project to generate Bitstream;
b. Connect the JTAG writer to the development board and turn on the power of the board.
//---JTAG programming bit steps:
a.Auto-Detect: JTAG scans FPGA, and EQ6HL45 is scanned here;
b.Add-Files: add the burning file flow_led.jpsk;
c. Check "Program/Configure";
d. Click “Start” to start burning.
//------END
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