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Ampel 

Ampelsteuerung mit toplevel_verbindungen sowie normaler TB und random TB
top_level_design
Julian Uebler 2 years ago
parent
ad550a9ac6
commit
37989e5bc1
4 changed files with 526 additions and 0 deletions
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  1. 184
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      Source_Ampel/LED_control.sv
  2. 46
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      Source_Ampel/rgb_led_top.sv
  3. 141
    0
      Source_Ampel/testbench.sv
  4. 155
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      Source_Ampel/testbench_random.sv

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Source_Ampel/LED_control.sv View File

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// ==================================================================
// >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
// ------------------------------------------------------------------
// Copyright (c) 2022 by Ampelsteuerungsgruppe
//
// --------------------------------------------------------------------
//
// Project: iCE5UP 5K RGB LED Steuerung
// File: LED_control.sv
// Title: LED Ampelsteuerung
// Description: Creates RGB PWM per data input
//
//
// --------------------------------------------------------------------
//
//------------------------------------------------------------
// Notes:
//
//
//------------------------------------------------------------
// Development History:
//
// __DATE__ _BY_ _____REV_ _DESCRIPTION___________________________
// 17.02.22 AmpelGr 1.0 Initial design for Lattice Radiant Ampelsteuerung
//
//------------------------------------------------------------
// Dependencies:
//
//
//
//------------------------------------------------------------


module LED_control1 (
// inputs
input wire clk12M, // 12M clock
input wire enable, // Asynchronous enable/disable wire
input wire [7:0] data_input, // for selecting color using sensor data
input wire data_valid, // Data on Parallelport is valid on posedge
//outputs
output reg red_pwm, // Red LED
output reg grn_pwm, // Green LED
output reg alarm // Alarmmeldung
);


//------------------------------
// INTERNAL SIGNAL DECLARATIONS:
//------------------------------
// parameters (constants)
parameter on_hi = 2'b10;
parameter on_lo = 2'b01;
parameter off = 2'b00;
parameter Brightness=4'b0111; //50% Brightness

// wires (assigns)
wire [4:0] red_intensity;
wire [4:0] grn_intensity;
wire clk24M;
wire LOCK;

// regs (always)
reg [1:0] RGB_color_s; // selected Color
reg [3:0] Brightness_s;

reg [1:0] red_set; // hi/lo/off
reg [1:0] grn_set;

reg [17:0] red_peak; // LED 'on' peak intensity (high precision)
reg [17:0] grn_peak;

reg [17:0] curr_red; // current LED intensity ( /256 = PWM duty cycle)
reg [17:0] curr_grn;

reg [17:0] pwm_count; // PWM counter
reg [7:0] count = 8'b0;

//------------------------------
// PLL Instantiation
//------------------------------
//Block to reset the PLL initially

pll_24M __(.ref_clk_i(clk12M ), .rst_n_i(~enable), .lock_o(LOCK), .outcore_o( ), .outglobal_o(clk24M));


// Capture stable parameters in local clock domain
always @ (posedge clk24M or posedge enable)
if (enable) begin
RGB_color_s <= 2'b00; //turn off
Brightness_s <= 4'b0000;
alarm <= 0;
end else if(!alarm) begin
if(data_valid) begin
if(data_input <100) begin
RGB_color_s <= 2'b10; // set green
Brightness_s <= Brightness;
end else if(data_input >168) begin
alarm <=1'b1;
end else begin
RGB_color_s <= 2'b11; // set yellow
Brightness_s <= Brightness;
end
end
end else begin
RGB_color_s <= 2'b01; // set Color red
Brightness_s <= Brightness;
end


// interpret 'brightness' setting
assign red_intensity = Brightness_s + 1'b1;
assign grn_intensity = Brightness_s + 1'b1;


// interpret 'color' setting
always @ (RGB_color_s)
case (RGB_color_s)
2'b01: begin red_set <= on_hi; grn_set <= off; end //Red
4'b10: begin red_set <= off; grn_set <= on_hi; end //Green
4'b11: begin red_set <= on_hi; grn_set <= on_hi; end //Yellow
default: begin red_set <= off; grn_set <= off; end //2'b00 off
endcase
// set peak values per 'brightness' and 'color'
// when color setting is 'on_lo', then peak intensity is divided by 2
always @ (posedge clk24M or posedge enable)
if (enable) begin
red_peak <= 18'b0;
end else begin
case (red_set)
on_hi: red_peak <= {red_intensity, 13'h000}; // 100%
on_lo: red_peak <= {1'b0,red_intensity, 12'h000}; // 50%
default: red_peak <= 18'h00000;
endcase
end
always @ (posedge clk24M or posedge enable)
if (enable) begin
grn_peak <= 32'b0;
end else begin
case (grn_set)
on_hi: grn_peak <= {grn_intensity, 13'h000}; // 100%
on_lo: grn_peak <= {1'b0,grn_intensity, 12'h000}; // 50%
default: grn_peak <= 18'h00000;
endcase
//$monitor("grn_peak=%d",grn_peak);
end

// set PWM duty cycle. 8-bit resolution 0x100 is 100% on
always @ (posedge clk24M or posedge enable)
if (enable) begin
curr_red <= 18'b0;
curr_grn <= 18'b0;
end else begin
curr_red <= red_peak;
curr_grn <= grn_peak;
end

// generate PWM outputs
always @ (posedge clk24M or posedge enable)
if (enable) begin
pwm_count <= 18'b0;
red_pwm <= 0;
grn_pwm <= 0;
end else begin
if(pwm_count < 131071)
pwm_count <= pwm_count + 1;
else
pwm_count <= 0;
if(pwm_count < curr_red)
red_pwm <= 1;
else
red_pwm <= 0;

if(pwm_count < curr_grn)
grn_pwm <= 1;
else
grn_pwm <= 0;
end


endmodule // LED_control

+ 46
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Source_Ampel/rgb_led_top.sv View File

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module led_top (
input wire clk12M,
input wire rst,
input wire [7:0] data_input,
input wire data_valid,
output reg REDn,
output reg GRNn,
output reg RED,
output reg GRN,
output reg alarm
);
wire red_pwm;
wire grn_pwm;
defparam U1.on_hi = 2'b10;
defparam U1.on_lo = 2'b01;
defparam U1.off = 2'b00;
defparam U1.Brightness = 4'b0111; // 50% Brightness
defparam U2.RGB0_CURRENT = "0b111111";
defparam U2.RGB1_CURRENT = "0b111111";
defparam U2.RGB2_CURRENT = "0b111111";
LED_control1 U1 (.clk12M(clk12M),.enable(rst),.data_input(data_input),.data_valid(data_valid),.red_pwm(red_pwm),.grn_pwm(grn_pwm),.alarm(alarm));
RGB U2 (.CURREN('b1),.RGB0PWM(),.RGB1PWM(grn_pwm),.RGB2PWM(red_pwm),.RGBLEDEN('b1),.RGB0(),.RGB1(GRNn),.RGB2(REDn));
assign RED = red_pwm;
assign GRN = grn_pwm;
endmodule

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Source_Ampel/testbench.sv View File

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// ==================================================================
// >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
// ------------------------------------------------------------------
// Copyright (c) 2017 by Lattice Semiconductor Corporation
// ALL RIGHTS RESERVED
// ------------------------------------------------------------------
//
// Permission:
//
// Lattice SG Pte. Ltd. grants permission to use this code
// pursuant to the terms of the Lattice Reference Design License Agreement.
//
//
// Disclaimer:
//
// This VHDL or Verilog source code is intended as a design reference
// which illustrates how these types of functions can be implemented.
// It is the user's responsibility to verify their design for
// consistency and functionality through the use of formal
// verification methods. Lattice provides no warranty
// regarding the use or functionality of this code.
//
// --------------------------------------------------------------------
//
// Lattice SG Pte. Lt++++++++++++++++d.
// 101 Thomson Road, United Square #07-02
// Singapore 307591
//
//
// TEL: 1-800-Lattice (USA and Canada)
// +65-6631-2000 (Singapore)
// +1-503-268-8001 (other locations)
//
// web: http://www.latticesemi.com/
// email: techsupport@latticesemi.com
//
// --------------------------------------------------------------------
//
// Project: iCE5UP 5K RGB LED Tutorial
// File: testbench.v
// Title: LED PWM control
// Description: Creates RGB PWM per control inputs
//
//
// --------------------------------------------------------------------
//
//------------------------------------------------------------
// Notes:
//
//
//------------------------------------------------------------
// Development History:
//
// __DATE__ _BY_ _REV_ _DESCRIPTION___________________________
// 04/05/17 RK 1.0 Initial tutorial design for Lattice Radiant
//
//------------------------------------------------------------
// Dependencies:
//
//
//
//------------------------------------------------------------
//------------------------------------------------------------
//
//
// Testbench
//
//------------------------------------------------------------
`timescale 1ns/1ps
module tb;
//GSR GSR_INST ( .GSR(1));
//PUR PUR_INST ( .PUR(1));
reg clk12M;
reg rst;
reg [9:0]data_input;
reg data_valid;
wire RED;
wire GRN;
wire alarm;
led_top dut(.clk12M(clk12M),
.rst(rst),
.data_input(data_input),
.data_valid(data_valid),
.RED(RED),
.GRN(GRN),
.alarm(alarm)
);
initial
begin
clk12M=1'b0;
end
always
#41.666666 clk12M=~clk12M; //clock generation
initial
begin
rst=1'b1;
data_input=10'b0000000010; // data for green
data_valid=1'b0;
#500000
rst=1'b0;
#500000
data_valid = 1'b1;
#500000
data_valid = 1'b0;
#500000
rst=1'b1;
#500000
rst=1'b0;
data_valid=1'b1;
data_input=10'b1000000001; // data for yellow
#500000
data_valid=1'b0;
data_input = 10'b1100000001; //data for red
#500000
data_valid = 1'b1;
#500000
data_input=10'b1000000001; // data for yellow
#500000
rst=1'b1;
#500000
$stop;
end
initial
begin
$monitor("time=%t,rst=%d,",$time,rst);
end
endmodule

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Source_Ampel/testbench_random.sv View File

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// ==================================================================
// >>>>>>>>>>>>>>>>>>>>>>> COPYRIGHT NOTICE <<<<<<<<<<<<<<<<<<<<<<<<<
// ------------------------------------------------------------------
// Copyright (c) 2017 by Lattice Semiconductor Corporation
// ALL RIGHTS RESERVED
// ------------------------------------------------------------------
//
// Permission:
//
// Lattice SG Pte. Ltd. grants permission to use this code
// pursuant to the terms of the Lattice Reference Design License Agreement.
//
//
// Disclaimer:
//
// This VHDL or Verilog source code is intended as a design reference
// which illustrates how these types of functions can be implemented.
// It is the user's responsibility to verify their design for
// consistency and functionality through the use of formal
// verification methods. Lattice provides no warranty
// regarding the use or functionality of this code.
//
// --------------------------------------------------------------------
//
// Lattice SG Pte. Lt++++++++++++++++d.
// 101 Thomson Road, United Square #07-02
// Singapore 307591
//
//
// TEL: 1-800-Lattice (USA and Canada)
// +65-6631-2000 (Singapore)
// +1-503-268-8001 (other locations)
//
// web: http://www.latticesemi.com/
// email: techsupport@latticesemi.com
//
// --------------------------------------------------------------------
//
// Project: iCE5UP 5K RGB LED Tutorial
// File: testbench.v
// Title: LED PWM control
// Description: Creates RGB PWM per control inputs
//
//
// --------------------------------------------------------------------
//
//------------------------------------------------------------
// Notes:
//
//
//------------------------------------------------------------
// Development History:
//
// __DATE__ _BY_ _REV_ _DESCRIPTION___________________________
// 04/05/17 RK 1.0 Initial tutorial design for Lattice Radiant
//
//------------------------------------------------------------
// Dependencies:
//
//
//
//------------------------------------------------------------
//------------------------------------------------------------
//
//
// Testbench
//
//------------------------------------------------------------
class Rst_rnd;
rand bit [1:0] data;
constraint Rst_rnd
{
data dist {0:=70,1 :=30};
}
endclass
class Data_valid_rnd;
rand bit [1:0] data;
constraint Data_valid_data
{
data dist {0:=10,1 :=90};
}
endclass
class Data_input_rnd;
rand bit [7:0] data;
endclass
`timescale 1ns/1ps
// inputs and outputs
module tb;
reg clk12M;
reg rst;
reg [7:0]data_input;
reg data_valid;
wire RED;
wire GRN;
wire alarm;
//random
Rst_rnd rst_rnd = new();
Data_valid_rnd data_valid_rnd = new();
Data_input_rnd data_input_rnd = new();
// connect module
led_top dut(.clk12M(clk12M),
.rst(rst),
.data_input(data_input),
.data_valid(data_valid),
.RED(RED),
.GRN(GRN),
.alarm(alarm)
);
//clock
initial
begin
clk12M=1'b0;
end
always
#41.666666 clk12M=~clk12M; //clock generation
int cycles = 0;
//random test
initial begin
repeat (50) begin
#50000
cycles =cycles+1;
rst_rnd.randomize();
data_input_rnd.randomize();
data_valid_rnd.randomize();
rst = rst_rnd.data;
data_input = data_input_rnd.data;
data_valid = data_valid_rnd.data;
// assertions
// assert that reset resets
assert property ( @(posedge clk12M) (##1 rst) |=> !alarm);
// assert color green
assert property(@(posedge clk12M) disable iff (rst | !data_valid| alarm) ((data_input < 100) |=> ##4 (!RED && GRN));
//assert color yellow
assert property(@(posedge clk12M) disable iff (rst | !data_valid| alarm) ((data_input >= 100) && (data_input <= 168))|=> ##4 (RED && GRN));
//assert color red + alarm
assert property(@(posedge clk12M) disable iff (rst | !data_valid) (data_input > 168) |=> ##4 (RED && !GRN && alarm));
$monitor("time=%t,cycle%d, rst=%d, data_input=%d, data_valid = %d, RED=%d, GRN=%d, alarm=%d",$time,cycles,rst,data_input, data_valid, RED, GRN, alarm);
end
$stop;
end
endmodule

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