Hi Christophe,
On Tuesday 27 October 2009 05:50:55 haquin wrote:
>
> I looked in the genSub record code and I think that what I do should work
> ... After deeper investigations, it turns out that when I initialize the
> INPH field type with FTH=STRING or CHAR it is then assigned a CA_LINK type
> ((*plinkin).type)==CA_LINK instead of CONSTANT ... That's why the Constant
> string is not copied at init.
>
> When FTH=LONG then ((*plinkin).type)==CONSTANT
>
> How can I force it to be a CONSTANT
You can't; with the existing database code the link type will be CONSTANT only
if the INPH string is a number. This behavior is a fundamental feature of the
way in which we parse link strings: If the string is completely consumed by
strtod() or strtol() the link type is a CONSTANT; if not and it matches the
name of a local PV it's a DB_LINK, otherwise it must be a CA_LINK.
As an alternative to Tim's suggestion you could put one or more dbpf commands
in your startup script to set the .H field with your string(s), but they must
appear after the iocInit command.
Sorry,
- Andrew
--
The best FOSS code is written to be read by other humans -- Harald Welte
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