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標題: 藍芽延遲問題 [打印本頁]

作者: x10532x 時間: 2014-7-18 04:04
標題: 藍芽延遲問題

大家好

最近在研究兩組運動感測器各接arduino 與藍芽無線(HC-05)並把資料輸出至MATLAB即時繪圖

目前確實兩組感測器都可以收到資料

拔掉藍芽改有線的話兩組可以同時無延遲即時輸出

只接一組感測器的話無線有線都可以無延遲即時輸出

但目前遇到兩組都改成藍芽輸出MATLAB時會有其中一組延遲大概兩秒另外一組則是可以無延遲即時輸出

請求專家幫忙或給點意見謝謝試過好多種方法仍然改變不了延遲問題

作者: vegewell 時間: 2014-7-21 21:04
回復 1# x10532x

買藍芽無線(HC-06ˊ)從機`比較容易,Hc-05主從一體你必須注意MATLAB的設定

HC-05 is actually a bluetooth SPP device, so we cannot use traditional serial function in matlab, because its only support "real" COM port.

However, matlab give us a similar lib named "bluetooth" :

http://www.mathworks.com/help/instrument/bluetooth-communication.html

You can apply ccde as below to access the HC-05:

1. first make sure you havn't change the device name of you HC-05, default is "HC-05", you can check it at your bluetooth Properities menu at Control Panel.

2. Code

%creat a bluetooth object%HC-05 channel default is 1b = Bluetooth('HC-05',1);fopen(b);%write and read functionfwrite(b,Bluetooth_Write,'uchar');Bluetooth_Read=fgets(b);%close and clearfclose(b);clear(b);

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