Hm, could be, I will see later, but I see now that for example
digital_correlate block has unsigned.
Thank you Tim.
Nemanja
On Thu, May 30, 2013 at 12:59 AM, Monahan-Mitchell, Tim <
tmona...@qti.qualcomm.com> wrote:
> I worked on an "interleaved char to complex" block some time ago. It was
> not working right until I changed it to specify 'signed' char instead of
> letting the compiler default happen (which could be either way). - Tim
>
> From: discuss-gnuradio-bounces+tmonahan=qti.qualcomm....@gnu.org [mailto:
> discuss-gnuradio-bounces+tmonahan=qti.qualcomm....@gnu.org] On Behalf Of
> Nemanja Savic
> Sent: Wednesday, May 29, 2013 4:55 PM
> To: discuss-gnuradio@gnu.org
> Subject: [Discuss-gnuradio] strange operation when char at input
>
> Hi all guys,
> I wouldn't bother again but I have spent a lot of time trying to figure
> out what's going on.
> Nameli I want to design block with char type at input and char type at the
> output.
> After finished with the design I realized strange block operation. Input
> samples were always zero. Then I tried with this:
> int
> test_proba_sync_bb::work(int noutput_items,
> gr_vector_const_void_star &input_items,
> gr_vector_void_star &output_items)
> {
> const char *in1 = (const char *) input_items[0];
> char *out = (char *) output_items[0];
> const char *in2 = (const char *) input_items[1];
>
> // Do <+signal processing+>
> for(int i=0;i<noutput_items;i++)
> out[i] = in1[i]+in2[i];
> // Tell runtime system how many output items we produced.
> return noutput_items;
> }
>
> After quite some time I designed similar block with float ports and it
> worked. Then I changed upper block to have short type at input and output
> and it worked just fine.
> And yes, in test everything works just fine, but in grc not, It always
> spits 0 at the output.
> Is there any possible complications with endianess or I don't know.
>
> Best,
>
>
> --
> Nemanja Savić
>
--
Nemanja Savić
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