________________________________
From: Mark Rivers
Sent: Thursday, February 28, 2019 12:35 PM
To: Joao Afonso
Subject: Re: asynDriver - update record (timestamp), on no change
Your proposed hack is indeed the workaround for now. It would be nice to add another way to do this, perhaps forceParamCallback(addr, param).
Mark
________________________________
From: [email protected] <[email protected]> on behalf of Joao Afonso via Tech-talk <[email protected]>
Sent: Thursday, February 28, 2019 11:16 AM
To: [email protected]
Subject: asynDriver - update record (timestamp), on no change
Hello,
I have an asyn driver IOC that periodically receives new data, updates the parameters (and timestamps), and runs the callbacks for the "I/O Intr" records.
It has an extra thread that runs something like this:
while(1)
{
int value = wait_for_data();
setIntegerParam(dev_addr, param_id, value)
updateTimeStamp();
callParamCallbacks(dev_addr);
}
However, 'callParamCallbacks' will not update the record timestamp if the value received keeps being the same.
From what I understand, this is the intended behaviour of asynDriver - no updates if data is the same -, but I would like to know if there a way to enforce it (to update the record timestamp)?
One possible solution I think will work is to update the parameter with a random value first, to trigger the 'new data' flag, but it feels like an hack...
Example:
setIntegerParam(dev_addr, param_id, 0)
setIntegerParam(dev_addr, param_id, value)
Thank you,
Joao Afonso
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- Re: Fw: asynDriver - update record (timestamp), on no change Rod Nussbaumer via Tech-talk
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