如何將Arduino MQ-3輸入轉換爲Delphi界面？

Question

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對於delphi中的酒精軟件呼氣檢測，請嘗試共享作爲參考最終項目？

Answer 1

您發送的數據僅僅是ASCII文本，然後CR + LF，所以這是可預期的是，如果你調用過載傳遞一個整數值，該值被接收爲文本。看到println參考：由回車字符（ASCII 13，或「\ R」）

的println

打印數據到串口作爲人類可讀的ASCII文本，接着 和一個換行 字符（ASCII 10或'\ n'）。

因此得到一些串口庫，並等待在那裏CR + LF字符將顯示完整文本。例如與TurboPower Async，你可以設置TApdDataPacket成分是這樣的：

ApdDataPacket1.StartCond := scAnyData; 
ApdDataPacket1.EndCond := [ecString]; 
ApdDataPacket1.EndString := #13#10; 

，並在其OnStringPacket事件過程中接收到的文本以某種方式：

procedure TForm1.ApdDataPacket1StringPacket(Sender: TObject; Data: string); 
begin 
    { even an integer value sent by println method will be received as text 
    which naturally opens the door for creating some simple communication 
    protocol, so let's just log this time; with function like TryStrToInt 
    you could test if the received text is an integer value, but it still 
    is not a real communication protocol } 
    Memo1.Lines.Add(Data); 
end;