msk调制解调的fpga程序代码verilog

下面是一个简单的MSK调制解调的FPGA程序代码Verilog示例：

module msk_mod_demod (
    input clk,
    input reset,
    input [7:0] data_in,
    output reg data_out,
    output reg mod_out
);

// MSK调制参数
parameter freq_dev = 10; // 频偏
parameter bit_rate = 100; // 比特率
parameter sample_rate = 1000; // 采样率

// 计算参数
reg [31:0] phase_acc; // 相位累加器
reg [15:0] mod_acc; // 调制信号累加器
reg [15:0] demod_acc; // 解调信号累加器
reg [7:0] data_count; // 数据计数器
reg [7:0] sample_count; // 采样计数器
reg [7:0] bit_count; // 比特计数器
reg [1:0] demod_state; // 解调状态机

// 初始化参数
initial begin
    phase_acc <= 0;
    mod_acc <= 0;
    demod_acc <= 0;
    data_count <= 0;
    sample_count <= 0;
    bit_count <= 0;
    demod_state <= 2'b00;
end

// 数据输入
always @(posedge clk) begin
    if (reset) begin
        data_count <= 0;
    end else begin
        data_count <= data_count + 1;
    end
end

// MSK调制
always @(posedge clk) begin
    if (reset) begin
        phase_acc <= 0;
        mod_acc <= 0;
    end else begin
        if (sample_count == 0) begin
            mod_acc <= {mod_acc[14:0], data_in};
            phase_acc <= phase_acc + freq_dev * mod_acc;
        end
        sample_count <= sample_count + 1;
        if (sample_count == sample_rate / bit_rate) begin
            sample_count <= 0;
        end
    end
end

// MSK解调
always @(posedge clk) begin
    if (reset) begin
        demod_acc <= 0;
        demod_state <= 2'b00;
    end else begin
        if (sample_count == 0) begin
            case (demod_state)
                2'b00: begin // 等待跳变
                    if (data_in == 1) begin
                        demod_state <= 2'b01;
                    end
                end
                2'b01: begin // 第一个采样
                    demod_acc <= phase_acc;
                    demod_state <= 2'b10;
                end
                2'b10: begin // 第二个采样
                    if (data_in == 0) begin
                        demod_acc <= demod_acc + phase_acc;
                    end
                    demod_state <= 2'b00;
                end
                default: begin // 其他情况
                    demod_state <= 2'b00;
                end
            endcase
        end
        sample_count <= sample_count + 1;
        if (sample_count == sample_rate / bit_rate / 2) begin
            sample_count <= 0;
        end
    end
end

// 输出结果
always @(posedge clk) begin
    if (reset) begin
        data_out <= 0;
        bit_count <= 0;
    end else begin
        if (sample_count == 0) begin
            data_out <= (demod_acc > mod_acc) ? 1 : 0;
            if (bit_count == bit_rate - 1) begin
                bit_count <= 0;
            end else begin
                bit_count <= bit_count + 1;
            end
        end
        if (mod_acc > 0) begin
            mod_out <= 1;
        end else begin
            mod_out <= 0;
        end
    end
end

endmodule

这是一个简单的MSK调制解调的FPGA程序代码Verilog示例，其中包含MSK调制参数、计算参数、状态机、数据输入、MSK调制、MSK解调和输出结果等部分，可以根据具体的应用场景进行修改和优化。