Difference between revisions of "USB to serial adapter"

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imported>ThorstenStaerk
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[51904.344545] usb 2-1.6: pl2303 converter now attached to ttyUSB0
 
[51904.344545] usb 2-1.6: pl2303 converter now attached to ttyUSB0
 
</pre>
 
</pre>
 +
 +
= Testing with another computer =
 +
To test with another computer I connect the USB to serial adapter to my USB port, the other end I connect via a female-female cable to an older computer's com2 port. Then I issue on my computer
 +
dd if=/dev/urandom of=/dev/ttyUSB0
 +
on the other computer I use
 +
dd if=/dev/ttyS1
 +
And I can see how garbage is transmitted.
  
 
= See also =
 
= See also =
 
* [[hardwAre]]
 
* [[hardwAre]]

Revision as of 08:04, 10 June 2012

USB to serial adaptors allow you to use RS232 based hardware via a computer's USB port.

I bought SiteCom's USB to serial cable and it works perfectly with Linux:

dmesg
  • in the syslog you will find some lines reading like
[51904.256210] usb 2-1.6: new full speed USB device number 8 using ehci_hcd
[51904.341896] usb 2-1.6: New USB device found, idVendor=067b, idProduct=2303
[51904.341904] usb 2-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[51904.341909] usb 2-1.6: Product: USB-Serial Controller D
[51904.341912] usb 2-1.6: Manufacturer: Prolific Technology Inc. 
[51904.342508] hdj_probe() unsupported device, idVendor67b, idProduct:2303
[51904.342540] pl2303 2-1.6:1.0: pl2303 converter detected
[51904.344545] usb 2-1.6: pl2303 converter now attached to ttyUSB0

Testing with another computer

To test with another computer I connect the USB to serial adapter to my USB port, the other end I connect via a female-female cable to an older computer's com2 port. Then I issue on my computer

dd if=/dev/urandom of=/dev/ttyUSB0

on the other computer I use

dd if=/dev/ttyS1

And I can see how garbage is transmitted.

See also