Re: [Discuss-gnuradio] OOT sourcec block in python error

Hello Ayaz,

If you are getting 'Template error' messages, you will have to check the XML file of your block (in grc directory). 

Also, 'input' is not a valid variable name in Python, as it is used for other purposes. You will have to re-name that variable to something else.

Finally, "out[0][:] = self.input" should become "out[:] = self.input" as you already selected output port and you are not outputting vectors.

Regards,

Kyeong Su Shin

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보낸 사람: Ayaz Mahmud <ayazmahmud@hotmail.com> 대신 Discuss-gnuradio <discuss-gnuradio-bounces+ksshin=postech.ac.kr@gnu.org>
보낸 날짜: 2018년 7월 31일 화요일 오전 2:22:35
받는 사람: discuss-gnuradio@gnu.org
제목: [Discuss-gnuradio] OOT sourcec block in python error

 

Hi,

 

I am trying to build a source block in python. Below is my code. After using the block I am getting a syntax error: self.Span_SourceBlock_0 = Template error: Span.SourceBlock($input)

 

My block should take input from user(int/float), and output the same. Though these are available blocks in GnuRadio but I am trying to learn on building it. Can you please check if my way of writing the code is correct?

 

import numpy

from gnuradio import gr

 

class SourceBlock(gr.sync_block):

    """

    docstring for block SourceBlock

    """

    def __init__(self, input):

        self.input = input

        gr.sync_block.__init__(self,

            name="SourceBlock",

            in_sig=None,

            out_sig=[numpy.float32])

 

 

    def work(self, input_items, output_items):

        out = output_items[0]

        out[0][:] = self.input

        return len(output_items[0])

 

Thanks,

Ayaz