Re: [Discuss-gnuradio] Data types

On Wed, Nov 1, 2017 at 12:47 PM, Marcus Müller <address@hidden> wrote:

Have you modified the GRC .xml file accordingly?

On 01.11.2017 16:29, Tellrell White wrote:
Thanks for the response. In the code below, I'm matching the output type of the divide block which is float and also the length which I'm setting here as for v_len. However, I'm still not seeing any change. I'm also doing this in python. Any ideas?

def __init__(self, num_values=1024, V_len=1024):
        gr.basic_block.__init__(self,
            name="ED_block",
            in_sig=[(np.float, V_len)],
            out_sig=[])
        self.V_len = V_len
        self.num_values = num_values
        self.seen = 0

Regards
Tellrell

On Wed, Nov 1, 2017 at 3:46 AM, Andrej Rode <address@hidden> wrote:

Hir ,

On Tue, Oct 31, 2017 at 11:03:57PM -0400, Tellrell White wrote:
> Hello All
> I have a question concerning data types. I'm creating a sink block in python that takes float values from a "divide" block that has a vector length of 1024. The output port on the divide block is red. How can set the input of my block to have a red input port?

You need to match the output type of the divide block (which is probably
float) _and_ you need to match the vector length of the divide block.
Best done with setting a parameter `vlength` and setting this as your
io_signature in the constructor:
`io_signature::make (1, 1, sizeof (float)*vlen)),`

This creates a block with a configurable vector length as input.

Cheers
Andrej
--
Andrej Rode
GPG Key: 750B CBBB 4A75 811A 4D5F 03ED 5C23 7FB8 9A7D A2AA
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From:	Tellrell White
Subject:	Re: [Discuss-gnuradio] Data types
Date:	Wed, 1 Nov 2017 20:21:25 -0400