I don’t see why it’s not printing the error message returned from the driver.
Mark
Sent from my iPhone
On Jul 17, 2019, at 1:28 PM, Eric Norum <[email protected]<mailto:[email protected]>> wrote:
I checked that autoConnect code and it does print the error message supplied by the driver:
if (!pdpCommon->connected) {
epicsMutexMustLock(pport->synchronousLock);
status = pasynCommon->connect(drvPvt,pasynUser);
epicsMutexUnlock(pport->synchronousLock);
}
if(status!=asynSuccess) {
asynPrint(pasynUser,ASYN_TRACE_ERROR,
"%s %s %d autoConnect could not connect\n",
pasynUser->errorMessage,pport->portName,addr);
}
So the fact that there’s nothing printed between the time and the port name implies that the USBTMC connect method is returning a value other than asynSuccess but is not filling in an error message.
I had a look through drvAsynUSBTMC.c and can see no place that its connect method returns asynError without filling a value into pasynUser->errorMessage.
What version of ASYN are you using?
Mark, any idea what’s going on here?
On Jul 17, 2019, at 9:55 AM, Christopher Herrmann <[email protected]<mailto:[email protected]>> wrote:
I tried the command you suggested. Here is the output when running the IOC.
usbtmcConfigure("U0", 0x05E6, 0x2230, "", 0, 0)
Will connect to first USB TMC device found with vendor ID 0x05e6 and product ID 0x2230.
2019/07/17 12:53:34.209 U0 -1 autoConnect could not connect
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