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Refactor UART testbench for ultrasonic commands: improve readability and organization of code structure

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Gamenight77
2025-05-12 13:24:58 +02:00
parent 30bbe27510
commit 790b85841b
1 changed files with 47 additions and 27 deletions
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70
Semaine_5/UART_ULTRASON_COMMANDS/tests/verilog/tb_uart_ultrason.v
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@@ -3,67 +3,87 @@
module tb_ultrason_commands;
reg clk = 0;
always #18.5 clk = ~clk; // ~27 MHz
wire tx, rx;
wire [5:0] leds;
wire ultrason_sig;
reg tx_enable = 0;
reg tx_ready;
wire tx_ready;
reg [7:0] data_in = 8'h00;
reg [7:0] data_out;
reg rx_received;
wire rx_enable = 1'b1;
wire rx,tx;
always #18.5 clk = ~clk;
wire [7:0] data_out;
wire rx_received;
// === PARAMÈTRES ===
localparam CLK_FREQ = 27_000_000;
localparam BAUD_RATE = 115_200;
ultrasonic_sensor ultrasonic_sensor_instance (
.clk(clk),
.signal(ultrason_sig)
);
top_uart_ultrason_command top_uart_ultrason_command_instance (
// === MODULE TESTÉ ===
top_uart_ultrason_command dut (
.clk(clk),
.rx(rx),
.tx(tx),
.ultrason_sig(ultrason_sig),
.leds()
.leds(leds)
);
// === SIMULATION CAPTEUR ULTRASON ===
ultrasonic_sensor fake_sensor (
.clk(clk),
.signal(ultrason_sig)
);
// === RX : observe ce que le FPGA envoie ===
uart_rx #(
.CLK_FREQ(CLK_FREQ),
.BAUD_RATE(BAUD_RATE)
) rx_instance (
) uart_rx_inst (
.clk(clk),
.rx_pin(tx),
.rx_pin(tx), // observe ce que le FPGA envoie
.rx_data(data_out),
.rx_received(rx_received),
.rx_enable(rx_enable)
.rx_enable(1'b1)
);
// === TX : envoie une commande au FPGA ===
uart_tx #(
.CLK_FREQ(CLK_FREQ),
.BAUD_RATE(BAUD_RATE)
)tx_instance (
) uart_tx_inst (
.clk(clk),
.tx_enable(tx_enable),
.tx_ready(tx_ready),
.data(data_in),
.tx(rx),
.tx(rx), // vers le FPGA
.rst_p(1'b0)
);
// === TEST SEQUENCE ===
initial begin
$dumpfile("runs/uart.vcd");
$dumpvars(0, tb_uart);
$dumpfile("runs/ultrason_commands.vcd");
$dumpvars(0, tb_ultrason_commands);
$display("======== Start UART ULTRASONIC COMMANDS =========");
$display("==== Start UART Ultrasonic Test ====");
// Attendre que le tx soit prêt
wait(tx_ready);
#100;
// Envoyer la commande "ONE" (1)
data_in <= 8'd1; // ONE
tx_enable <= 1;
#20;
tx_enable <= 0;
$display("======== END UART ULTRASONIC COMMANDS =========");
// Attendre la réponse
wait(rx_received);
$display(">> Distance LSB: %d", data_out);
wait(rx_received);
$display(">> Distance MSB: %d", data_out);
$display("==== End UART Ultrasonic Test ====");
#1000;
$stop;
end