Plot Graph Signal From Serial Port I/O

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Adi Mico
Adi Mico 2011-4-28
回答： Claudio Gambelli 2013-11-27
How can we plot the signal from serial port I/O (RS232)? Thank You

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回答（2 个）

Walter Roberson
Walter Roberson 2011-4-28
Which signal? RS232 can be done in as little as three wires (receive, transmit, and ground), but it is more common to use at least 5 (adding flow control), and on the standard IBM DB-9 serial port, 8 of the 9 pins have a well-defined use.
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Adi Mico
Adi Mico 2011-5-2
Both of receive signal to be interpreted as a stream of binary bytes that I want to plot the numeric value of and the receive signal to be interpreted as a stream of characters that represent printable numbers that I want to convert to numbers and plot those.
The signal is send to the matlab become characters actually. But I want to convert them to numbers so I can plot them.
Walter Roberson
Walter Roberson 2011-5-2
I suggest reading this documentation:
http://www.mathworks.com/help/techdoc/matlab_external/f62852.html

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Claudio Gambelli
Claudio Gambelli 2013-11-27
Yes it's possible to plot data received form serial port, i have developped this tool with customized protocol RTCPlot. Video and information are at the following link: http://www.gambelli.eu/body.php?page=product.htm
Bye Claudio

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