Plot Graph Signal From Serial Port I/O

2011 4 28
2 个回答
更新时间：2013 11 27
25 次查看（30 天）

回答（2 个）

Walter Roberson
Walter Roberson 2011-4-28

0 个投票

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 2011-4-30
plot the receive signal..
Walter Roberson
Walter Roberson 2011-4-30
Do you want to plot the voltage level of the receive signal, or do you want the receive signal to be interpreted as a stream of binary bytes that you want to plot the numeric value of, or do you want the receive signal to be interpreted as a stream of characters that represent printable numbers that you then want to convert to numbers and plot those?
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

0 个投票

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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