This is the sample and hold c++ io signature:
@NAME@::@NAME@ ()
: gr_sync_block ("@BASE_NAME@",
gr_make_io_signature2 (2, 2, sizeof (@I_TYPE@),
sizeof(char)),
gr_make_io_signature (1, 1, sizeof (@O_TYPE@))),
d_data(0)
{
}
this is the grc xml block io signature:
<sink>
<name>in</name>
<type>$type</type>
</sink>
<sink>
<name>ctrl</name>
<type>byte</type>
</sink>
<source>
<name>out</name>
<type>$type</type>
</source>
Looks correct?
-Josh
On 05/28/2010 03:32 PM, Alberto Trentadue wrote:
Hello
I think I found a wrong input declaration in the sample_and_hold GRC block.
The "control" input is defined to be
of the same data type of "in" and "out". Instead, it should be a byte.
This is the fix I have applied:
[albe...@iz0cez gnuradio]$ diff -c
./share/gnuradio/grc/blocks/gr_sample_and_hold_xx.xml.orig .
/share/gnuradio/grc/blocks/gr_sample_and_hold_xx.xml
*** ./share/gnuradio/grc/blocks/gr_sample_and_hold_xx.xml.orig
2010-05-28 23:29:32.953460291 +0200
--- ./share/gnuradio/grc/blocks/gr_sample_and_hold_xx.xml 2010-05-28
23:29:
57.655461060 +0200
***************
*** 40,46 ****
</sink>
<sink>
<name>ctrl</name>
! <type>$type</type>
</sink>
<source>
<name>out</name>
--- 40,46 ----
</sink>
<sink>
<name>ctrl</name>
!
<type>byte</type>
</sink>
<source>
<name>out</name>
BTW: what is the need to use a "char" as control in the
correspondent gr block?
Moreover, it seems to me that the Documentation is wrong, because the block
samples the input
when the ctrl is 1, and holds when is 0, not the opposite.
Do you agree?
Alberto-
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