什么是cts / rts的参数？ [英] What are parameter(s) for cts/rts?

问题描述

以下是我从前同事处获得的程序的代码片段。它是用来验证串口的串口tx / rx。现在，我有一个请求在测试中添加cts / rts控件。我应该在控制字符串9600，n，8,1，n中添加哪些参数？

Below is code snippet from program I got from ex-coworker. It's to do serial port tx/rx for verifying serial port. Now, I've got a request to add cts/rts control on the test. What are the parameter(s) I should add to control string "9600,n,8,1,n"?

this.serialService = GREUtils.XPCOM.getService("@firich.com.tw/serial_port_control_win;1", "nsISerialPortControlWin");
// ......
  rv = serialService.openPort(comport, "9600,n,8,1,n");

推荐答案

请看这里： SerialPort RTS Enable [ ^ ]和这里：SerialPort CTS Holding [ ^ ]

See here: SerialPort RTS Enable[^] and here: SerialPort CTS Holding[^]

我将9600，n，8,1，n更改为9600，n，8,1，h并且工作正常，能够测试cts / rts&dtr / dsr。 9600，n，8,1，n的最后一个字符用于打开/关闭H / W流控制，包括cts / rts和dtr / dsr。 'n'表示无控制，'h'表示HW控制ON。

I changed "9600,n,8,1,n" to "9600,n,8,1,h" and it works fine, able to test cts/rts & dtr/dsr. The last character of "9600,n,8,1,n" is used to turn on/off H/W flow controls, including cts/rts & dtr/dsr. 'n' means no control, 'h' means HW controls ON.

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