FPGA设计寻峰算法代码

以下是一份使用Verilog语言实现寻峰算法的代码示例：

module peak_finder (
    input [7:0] sample,
    input clk,
    input rst,
    output [7:0] peak_pos,
    output [7:0] peak_val,
    output found
);

parameter WINDOW_SIZE = 5;
parameter THRESHOLD = 10;

reg [7:0] window [0:WINDOW_SIZE-1];
reg [7:0] max_val;
reg [7:0] max_pos;
reg [1:0] state;
reg found;

always @(posedge clk) begin
    if (rst) begin
        for (i = 0; i < WINDOW_SIZE; i = i + 1) begin
            window[i] <= 0;
        end
        max_val <= 0;
        max_pos <= 0;
        state <= 0;
        found <= 0;
    end else begin
        case (state)
            0: begin
                for (i = 0; i < WINDOW_SIZE-1; i = i + 1) begin
                    window[i] <= window[i+1];
                end
                window[WINDOW_SIZE-1] <= sample;
                state <= 1;
            end
            1: begin
                if (sample > window[WINDOW_SIZE-2] && sample > window[WINDOW_SIZE-1]) begin
                    max_val <= sample;
                    max_pos <= WINDOW_SIZE-1;
                    state <= 2;
                end else begin
                    state <= 0;
                end
            end
            2: begin
                if (sample > max_val) begin
                    max_val <= sample;
                    max_pos <= WINDOW_SIZE-1;
                end else begin
                    if (max_val >= THRESHOLD) begin
                        peak_val <= max_val;
                        peak_pos <= max_pos;
                        found <= 1;
                    end
                    state <= 0;
                end
            end
        endcase
    end
end

endmodule

该代码实现了一个带有5个采样点的滑动窗口，以及一个阈值THRESHOLD来判断是否为峰值点。每当新的采样点输入时，算法模块会根据当前状态进行相应处理，直到找到峰值点或者回到初始状态。最终的峰值点数值和位置可以通过输出端口输出给外部设备。需要注意的是，该代码仅供参考，实际使用时需要根据具体需求进行修改和优化。