On 01/03/2012 08:48 AM, Jerry Geis wrote:
I have a USB to serial converter attached to my box. pl2303: Prolific
PL2303 USB to serial adaptor driver
if I login to the box and send/receive serial commands over this unit
it works without error EVERY time.
however, if I run the same command set from with-in the
extensions.conf with System()
I get errors in dmesg like "pl2303 ttyUSB0: pl2303_open - failed
submitting read urb, error -22"
and then obviusly my command does not work.
however, again - If I go back to the command line and my command it
runs just fine.
Any ideas on what might be happening here?
Jerry
extensions.conf
exten => s,1,ChanIsAvail(Console/Dsp)
exten => s,n,GotoIf($["${AVAILCHAN}" = ""]?smvoice-busy,s,1)
exten => s,n,System(/home/silentm/bin/usbserial -start)
exten => s,n,Playback(beep)
exten => s,n,Dial(Console/dsp)
exten => s,n,Hangup
exten => h,1,System(/home/silentm/bin/usbserial -stop)
Jim and Doug
Yes the process is running as root. I should have mentioned that.
Also - yes the usbserial is a paging notification program.
So if its not permissions (since its running as root) what else might it be?
Thanks,
Jerry
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