Re: Stream Device With Parameters

[Dirk Zimoch <dirk.zimoch@psi.ch>]

Hi Gorka,

Please use the subject line. Otherwise your request may be ignored.

You can use protocol(param1,param2...) with up to 9 parameters (which 
must neither contain space nor comma at the moment, sorry). No space 
allowed before ( or inside ( and ).

The parameters appear as $1 ... $9 in the protocol. (Within quotes the $ 
must be escaped: "\$1" ... "\$9".)

I would write your example as follows:

field(INP,  "@devwbc6600.proto c4(0x04,0x57) $(PORT) $(A)")

c4 {
  out 0xc0 0x04 0xfb $2 $1 0x00 0x00 0x00 0x00 "%<xor>";
...
}

You probably want to use macros for LO and HI:

field(INP,  "@devwbc6600.proto c4($(LO),$(HI)) $(PORT) $(A)")

LO and HI may as well be specified in decimal here if you like.

By the way, instead of "c4" I would also give the protocol a name that 
someone who is not an expert in the wbc6600 (?) can understand.


Gorka Ronda wrote:
> Hello everyone,
>
> Using streamDevice, How can I run the command dbtr like a function with 
> parameters? Something like:
>
> Function (parameter 1, parameter 2)
>
> How do I have to write the protocol and record? There are currently as 
> follows:
>
> HI = \x04;
>
> LO = \x57;
>
> cmd4 = \xC0\x04\xFB${HI}${LO}\x00\x00\x00\x00%<xor>;
>
>  
>
> c4 {
>
>     out "\$cmd4";
>
>     in "%*4r";   
>
> }
>
>  
>
>  
>
> record(bi, "$(P):$(R):C4")
>
> {
>
>     field(DESC, "Command 4")
>
>     field(DTYP, "stream")
>
>     field(INP,  "@devwbc6600.proto c4 $(PORT) $(A)")
>
> }
>
>  
>
> What I want is not to specify the values of the variables HI and LO in 
> the archive .proto. I want to give them values when I call the command 
> dbtr (another command to process the records?), to give these variables 
> the hexadecimal value I want, each time I run the command.
>
> Thanks in advance,
>
> Gorka
>
>