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Re: [Discuss-gnuradio] Some general questions
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Some general questions |
Date: |
Wed, 25 Jan 2006 10:04:51 -0800 |
User-agent: |
Mutt/1.5.6i |
On Wed, Jan 25, 2006 at 03:08:42AM -0500, Dawei Shen wrote:
> Hi, Gang
>
> Just got two naive questions, but I've never thought about them seriously.
>
> 1. A Python programming question
>
> In gmsk_test.py, send_pkt() and rx_callback() are two inner functions of the
> outer function main(). However, in send_pkt(), the object "fg" is used, in
> rx_callback(), the object "st" is used. But I remember that the local name
> space of the outer function is invisible to the inner function. Can anyone
> of you guys help me with this question?
You are mistaken. Python uses lexical scoping. The inner function
sees the enclosing namespace (The code wouldn't work otherwise.)
> 2. Is GNU Radio capable of transmitting and receiving at the same time?
> Particularly, they are operating using two different frequencies?
Yes. Yes.
Eric