Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Tue, 5 Apr 2016 11:41:19 +0000

> I found that I received the right information only when I set the baud rate was 9600. It get nothing when the baud rate was 115200.

This is unclear.  When you say "set the baud rate was 9600" do you mean the baud rate on the other computer, or do you mean in the asynSetOption command in this IOC?

Are you sure that the IOC computer actually supports baud 115200?  Not all computers do.

What OS and version are you running on the IOC computer?

Are there any error messages on the IOC when you run those commands?

Mark

________________________________________
From: [email protected] [[email protected]] on behalf of 梁雅翔 [[email protected]]
Sent: Tuesday, April 05, 2016 2:51 AM
To: [email protected]
Subject: set baud rate not work

Hi everyone,
   I have a strange question.
   I use the stream and asyn to control a device. epics 3.1.12.5,synApp_5_8.
   I set the baud of serial in 115200 in st.cmd with these commands:
*********
epicsEnvSet "TTY" "$(TTY=/dev/ttyS1)"
drvAsynSerialPortConfigure("L0","$(TTY)",0,0,0)
asynSetOption("L0",-1,"baud","115200")
asynSetOption("L0",-1,"bits","8")
asynSetOption("L0",-1,"parity","none")
asynSetOption("L0",-1,"stop","1")
asynSetOption("L0",-1,"clocal","Y")
asynSetOption("L0",-1,"crtscts","N")
asynOctetSetInputEos("L0",-1,"\r\n")
asynOctetSetOutputEos("L0",-1,"\r\n")
asynSetTraceIOMask("L0",-1,0x2)
asynSetTraceMask("L0",-1,0x9)
***********
   Then I start the st.cmd and communicate it with another xp computer, using Serial port assistant.
I found that I received the right information only when I set the baud rate was 9600. It get nothing when the baud rate was 115200.
And it should be 115200, I failed when i used it in device directly.
I did set it was 115200 in st.cmd, why it did not work.

Thanks,
Liang yx

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System