Hello
I 'm an old french Applied Physics Teacher and I try to use basic GRC for my electronics students (2 first University years in a technical Department) as a learning tool since 2016
I use GRC under Pentoo Linux if I need to run HackRFone/osmocom and/or DBTVstick/RTLSDR
and Windows7 if not because GRC under W7 doesn't run the source/sink
I'm not a computer expert evenif I practise a little Arduino and python ( I was rised with Fortran/Pascal math computing a long time ago)
I choosed GRC as a free alternative to Labview too expensive and too much to handle for DSP
I tried to design a IIR Filter like an FIR with / delay / add/ sub /multiply const/ blocks looped : failure
I tried to run the IIR Filter block under W7 : failure
Error 0:
Block - blocks_add_xx_1 - Add(blocks_add_xx):
Source - out(0):
Port is not connected.
Error 1:
Block - blocks_add_xx_1 - Add(blocks_add_xx):
Sink - in0(0):
Port is not connected.
Error 2:
Block - blocks_add_xx_1 - Add(blocks_add_xx):
Sink - in1(1):
Port is not connected.
Error 3:
Block - blocks_add_xx_1 - Add(blocks_add_xx):
Sink - in2(2):
Port is not connected.
Error 4:
Block - blocks_add_xx_1 - Add(blocks_add_xx):
Sink - in3(3):
Port is not connected.
I tried under W7 a python program
GNUR Radio Embedded Python Example 3 - IIR Filter
Prepared by Dr. Aaron Scher
address@hidden
Oregon Institute of Technology
Failure
The python block ask me for an editor
Block paths:
C:\Users\user\.grc_gnuradio
C:\Program Files\GNURadio-3.7\share\gnuradio\grc\blocks
Loading: "C:\Users\user\Desktop\RII_4_4.grc"
>>> Done
>>> Unable to load the default editor. Please choose an editor.
>>> No editor selected.
>>> Unable to load the default editor. Please choose an editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
>>> Error opening an external editor. Please select a different editor.
I tried to open Notepad and then the block is in an endless loop It doen't ask for an other different editor evenif it's always a failure !
Is there a simple working IIR Filter with taps ?
Thank you for your insights
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