streamdevice redirective problem

[Silver <marco_hair@163.com>]

hi, 

I want to use streamdevice to send an array of bytes to power supply controller, for example, 1024 bytes data.

so I use one soft waveform record (PS:T1) to prepare the array data, if a client such as caput or a python script write data to PS:T1, it will trigger PS:T2 in streamdevice to output data to power supply.

In PS:T2's protocol file, the out value is coming from PS:T1.

But it can't work, would you please give me some advice?

  

record(waveform, "PS:T1") 
{
  field(SCAN, "Passive")
  field(DTYP, "Soft Channel")
  field(NELM, "1024")
field(FTVL, "UCHAR")
field(FLNK, "$(USER):T2")
}

record(waveform, "PS:T2") 
{
  field(SCAN, "Passive")
  field(DTYP, "stream")
  field(NELM, "1024")
#  field(FTVL, "UCHAR")
  field(INP, "@ps.proto set_waveform $(terminal)")
}

protocol file is like following: 

set_waveform { 
out "%(\PS:T1)r";
#    in "\?" $1 0x00 0x00 0x00 0x00;

} 

 

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Best wishes

Geyang 2015-07-07