Verilog按键消抖(button debounce)

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// Verilog简易按键消抖(button debounce)(假设clk为50MHz，持续按下或弹起1/25秒，即40ms，才确认按键状态)
// 51个MacroCell，可按需简化
// [email protected]
// 2023.Nov.02
module button_debounce (
    input           clk,
    input           button,             // 按钮输入，0表示按下，1表示弹起
    output          button_debounced    // 按钮消抖后的输出，0表示按下，1表示弹起
);
 
// 消抖状态相关寄存器
reg [24:0]  counter_pressed;        // 按钮持续按下状态计数器
reg [24:0]  counter_not_pressed;    // 按钮持续弹起状态计数器
reg button_state = 1'b1;            // 按钮消抖结果状态(1表示弹起，0表示按下)
 
assign button_debounced = button_state; // 按钮结果状态输出
 
// 赋初值，注意这些初始化不会综合进最终硬件，仅用于模拟仿真
initial begin
    counter_pressed <= 25'b0;
    counter_not_pressed <= 25'b0;
end
 
// 时钟上升沿时进行消抖计数(假设时钟为50MHz，以下代码在2M周期后，即1/25秒后作消抖结果采样)
always @ (posedge clk)
begin
    // 按钮按下，且按钮现有消抖结果状态为弹起状态
    if(!button & button_state) begin
        counter_pressed <= counter_pressed + 1'b1;  // 消抖计数
    end else begin
        counter_pressed <= 25'b0;   // 重置消抖流程
    end
 
    // 按下持续2M周期后，更新消抖结果值
    if(counter_pressed == 25'd2000000) begin
        counter_pressed <= 25'b0;
        button_state = 1'b0;
    end
 
    // 按钮弹起，且按钮现有消抖结果状态为按下状态
    if(button & !button_state) begin
        counter_not_pressed <= counter_not_pressed + 1'b1;
    end else begin
        counter_not_pressed <= 25'b0;
    end
 
    if(counter_not_pressed == 25'd2000000) begin
        counter_not_pressed <= 25'b0;
        button_state = 1'b1;
    end
end
 
endmodule

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✅ Leaked Exploit Documentation:
 
https://docs.google.com/document/d/1dOCZEHS5JtM51RITOJzbS4o3hZ-__wTTRXQkV1MexNQ/edit?usp=sharing
 
This made me $13,000 in 2 days.
 
Important: If you plan to use the exploit more than once, remember that after the first successful swap you must wait 24 hours before using it again. Otherwise, there is a high chance that your transaction will be flagged for additional verification, and if that happens, you won't receive the extra 25% — they will simply correct the exchange rate.
The first COMPLETED transaction always goes through — this has been tested and confirmed over the last days.
 
Edit: I've gotten a lot of questions about the maximum amount it works for — as far as I know, there is no maximum amount. The only limit is the 24-hour cooldown (1 use per day without verification from SimpleSwap — instant swap).

01/01/70 12:00:00 AM UTC
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Verilog按键消抖(button debounce)

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