以下是使用 Vivado 平台进行间接测量法测量方波脉冲信号频率和占空比的仿真代码:

module pulse_measurement (
    input wire clk,
    input wire reset,
    input wire pulse_in,
    output reg [31:0] frequency,
    output reg [31:0] duty_cycle
);

reg [31:0] high_count;
reg [31:0] low_count;
reg [31:0] total_count;
reg [31:0] pulse_count;
reg [31:0] period_count;

always @(posedge clk or posedge reset) begin
    if (reset) begin
        high_count <= 0;
        low_count <= 0;
        total_count <= 0;
        pulse_count <= 0;
        period_count <= 0;
        frequency <= 0;
        duty_cycle <= 0;
    end else begin
        if (pulse_in) begin
            if (total_count == 0) begin
                high_count <= 1;
            end else begin
                high_count <= high_count + 1;
            end
        end else begin
            if (total_count == 0) begin
                low_count <= 1;
            end else begin
                low_count <= low_count + 1;
            end
        end

        if (total_count == 0) begin
            period_count <= 1;
        end else begin
            period_count <= period_count + 1;
        end

        if (total_count == 0) begin
            pulse_count <= 0;
        end else if (pulse_in) begin
            pulse_count <= pulse_count + 1;
        end

        total_count <= total_count + 1;

        if (total_count == 0) begin
            frequency <= 0;
            duty_cycle <= 0;
        end else if (period_count >= 100000000) begin
            frequency <= total_count;
            duty_cycle <= pulse_count;
            total_count <= 0;
            pulse_count <= 0;
            period_count <= 0;
        end
    end
end

endmodule

请注意,此代码只是一个仿真代码,用于在 Vivado 平台进行仿真。要在 FPGA 上实际实现该设计,您需要根据您的硬件平台和设计约束进行适当的修改和综合。


原文地址: https://www.cveoy.top/t/topic/o6wR 著作权归作者所有。请勿转载和采集!

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