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Subject: ASYN Communication through windows serial port (via USB)
From: Josh Stein <stein@aps.anl.gov>
To: tech-talk@aps.anl.gov
Date: Fri, 02 Mar 2012 16:03:58 -0600
Boy how I hate bringing this stuff up on a Friday...

I have a need to communicate to a serial based instrument off of a windows laptop. I have the latest ASYN build, which supports COM port mapping for windows. Like any 'modern' laptop, this machine does not have any built in serial connections, so I have a USB adapter which maps COM3 to a serial port. I can talk to the device via a terminal program on machine.

I execute the following on a softIOC running on the windows box:

drvAsynSerialPortConfigure("L0","COM3",0,0,0,0)
asynSetOption("L0",0,"baud","115200")

setOption failed COM3 error calling GetCommConfig 87


Note the setOption failed error; this is (apparently) preventing me from setting the baud rate to 115.2K (which, of course, is what the external device needs). (As an aside, I contacted Mark Rivers and he pointed out the typo in the error message - it should read: "...error calling SetCommConfig...")

I know this adapter handles that baud rate, as I can set it via a terminal program and communicate to my external device.

Any ideas?






Replies:
Re: ASYN Communication through windows serial port (via USB) Emmanuel Mayssat
RE: ASYN Communication through windows serial port (via USB) Mark Rivers

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