Thank you, Iain.

How do you let stream device know that you want exactly 140 numbers? Only setting NELM is sufficient?

Best regards,

Márcio Paduan Donadio

Software Engineer - TID-AIR-ACS - SLAC

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De: Iain Marcuson <[email protected]>
Enviado: quinta-feira, 18 de maio de 2017 12:19
Para: Paduan Donadio, Marcio
Assunto: RE: Streamdevice waveform - binary data stream with no separator

 

I have used something similar.  You would use the %r format specifier, in I believe something like:

In “%2.2r”

You may need to add the “#” flag to account for endianness.  For this you would set the separator to be blank.

 

Iain.

 

 

From: [email protected] [mailto:[email protected]] On Behalf Of Paduan Donadio, Marcio
Sent: Thursday, May 18, 2017 1:25 PM
To: EPICS tech talk <[email protected]>
Subject: Streamdevice waveform - binary data stream with no separator

 

Good morning to all!

 

I have an equipment that sends 140 16-bit words in sequence. I want to put the 140 numbers in a waveform using Streamdevice.

 

The manual says:

Separator = "";
String. Affects out and in commands.
When formatting or parsing array values in a format converter (see formats and waveform record), what string to write or to expect between values?

 

and gives this protocol example:

array_out {separator=", "; out "an array: (%.2f)";}

 

How can I address my case using something like the separator idea, when I don't have a separator, but a fixed byte size for each number?

 

Thank you for all help!

 

Márcio Paduan Donadio

Software Engineer - TID-AIR-ACS - SLAC