[GTALUG] Problem with /dev/ttyUSB* serial port

[Alvin Starr]

On 10/31/19 6:24 PM, Kevin Cozens via talk wrote:
> On 2019-10-31 9:11 a.m., Scott Allen via talk wrote:
>> On Thu, 31 Oct 2019 at 02:25, Jim Ruxton via talk <talk at gtalug.org> 
>> wrote:
>>> Is there a way that I can always have it show up as /dev/ttyUSB0
>>
>> I think the proper way is to provide a udev rule to identify the
>> device and assign a fixed name to it.
>>
>> https://unix.stackexchange.com/questions/66901/how-to-bind-usb-device-under-a-static-name 
>>
>
> The other option is to write your software so that it gets notified 
> when a USB device is installed/removed. You will be told the actual 
> device name. I needed to do this to detect insertion/removal of a 
> barcode reader.
>
Looking at the actual code it is setting a default value of /dev/ttyUSB0.
It should not be defaulting when you try to set it in the call but it 
may be interesting to set the default to /dev/null so that it will not 
do something that may be reasonable part of the time.

When you say that you cannot get anything but /dev/ttyUSB0 to work it 
makes me ask is there a problem that is causing the default to always be 
taken.

Forcibly breaking things can be a useful tool.

-- 
Alvin Starr                   ||   land:  (647)478-6285
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