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Here is a simple example to get started with the serial package. It tests the RxD and TxD lines. Make sure you have defined a loopback or connected the pins of your adapter.
 
Here is a simple example to get started with the serial package. It tests the RxD and TxD lines. Make sure you have defined a loopback or connected the pins of your adapter.
 
{{Code|Serial port example|<syntaxhighlight lang="octave" style="font-size:13px">
 
{{Code|Serial port example|<syntaxhighlight lang="octave" style="font-size:13px">
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# Open default serial port ttyUSB0 in default configuration of 115200, 8-N-1
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s0 = serial()
 
# Opens serial port ttyUSB1 with baudrate of 115200 (config defaults to 8-N-1)
 
# Opens serial port ttyUSB1 with baudrate of 115200 (config defaults to 8-N-1)
 
s1 = serial("/dev/ttyUSB1", 115200)  
 
s1 = serial("/dev/ttyUSB1", 115200)  
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Changing some configurations is simply done by calling helper functions
 
Changing some configurations is simply done by calling helper functions
 
{{Code|Serial port example: helper functions|<syntaxhighlight lang="octave" style="font-size:13px">
 
{{Code|Serial port example: helper functions|<syntaxhighlight lang="octave" style="font-size:13px">
set(s1, "baudrate", 9600) # Change baudrate
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set(s1, 'baudrate', 9600) # Change baudrate
set(s1, "bytesize", 5)    # Change byte size (config becomes 5-N-1)
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set(s1, 'bytesize', 5)    # Change byte size (config becomes 5-N-1)
set(s1, "parity", "E")    # Changes parity checking (config becomes 5-E-1),
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set(s1, 'parity', "E")    # Changes parity checking (config becomes 5-E-1),
 
                           # possible values [E]ven, [O]dd, [N]one.
 
                           # possible values [E]ven, [O]dd, [N]one.
set(s1, "stopbits", 2)    # Changes stop bits (config becomes 5-E-2), possible
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set(s1, 'stopbits', 2)    # Changes stop bits (config becomes 5-E-2), possible
 
                           # values 1, 2.
 
                           # values 1, 2.
  
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Do not forget to close the ports when you are done!
 
Do not forget to close the ports when you are done!
 
{{Code||<syntaxhighlight lang="octave" style="font-size:13px">
 
{{Code||<syntaxhighlight lang="octave" style="font-size:13px">
fclose(s1) # Closes and releases serial interface object
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srl_close(s0) # Closes and releases file descriptor
fclose(s2) # Closes and releases serial interface object
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srl_close(s1) # Closes and releases file descriptor
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srl_close(s2) # Closes and releases file descriptor
 
</syntaxhighlight>
 
</syntaxhighlight>
 
}}
 
}}

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