Re: Problem with GFSK Mod and Demod example from wiki

2021-08-23 Thread Solomon Tan
(Edited and resent because I did not CC the correct mailing list email) Hi Niko, I am Solomon. I made the GFSK Demod example. For some reason I could not download the attachments, so I cant tell exactly what your issue is, so I can only guess what it may have been. If the time sink only shows si

NBFM Tx Block High quad rate results in filter error

2021-06-21 Thread Solomon Tan
Hi all, Could someone share why a high quadrature rate in the NBFM Transmit Block results in a "Runtime Error: insufficient extremals"? I dont get it. In my example, I wanted to NBFM modulate some audio. I resampled the audio to 80kHz from 48kHz. These are the parameters in the NBFM Transmit Block

Packet_header vs Packet_format

2021-06-14 Thread Solomon Tan
Hi all, I have trouble understanding the difference between "packet header" and "packet format". They both appear to do the same thing - define a header for some data packets for TX and RX. For RX, both appear to be able to use the Header/Payload Demux block. Yet they appear to have different name

Re: Error with dynamically changing block parameter

2021-05-29 Thread Solomon Tan
YAML file. See https://wiki.gnuradio.org/index.php/YAML_GRC#Templates for more information. In my preceding email, I had problems because I tried to use gr_controlport. I barked up the wrong tree. Thanks to Derek Kozel for sharing this information with me. Cheers, Sol On 13/5/21 12:03 am, Solomo

Error with dynamically changing block parameter

2021-05-12 Thread Solomon Tan
Hi all, I am trying to make my OOT block respond to changes in its parameter the same way the Add Const block behaves. I want my block to update its value as and when the user slides the qtgui range. I notice this is not done by default. I added the same `add_rpc_variable` function defined in `gr-

Stream Tag in Embedded Python Blocks

2021-05-09 Thread Solomon Tan
Dear all, I was following the GRC Wiki tutorial on Stream Tags. In the example flowgraph, stream tags were added to the example QPSK de-modulator using Python code. I was unable to replicate the behavior in an embedded python block. How do I tell what port number to add the stream tag to? How do I

Re: Embedded Python Block Tutorial Param ID Error

2021-05-08 Thread Solomon Tan
y > https://github.com/gnuradio/gnuradio/pull/4522 > <https://github.com/gnuradio/gnuradio/pull/4522> > We forgot to special-case / adapt epy blocks... > > Sebastian > > (von unterwegs gesendet) > > On Sat, May 8, 2021, 06:23 Solomon Tan <mailto:solomonbs

Embedded Python Block Tutorial Param ID Error

2021-05-07 Thread Solomon Tan
Dear all,                                                                         I was following the GNURadio Embedded Python Block Tutorial. After adding a      Python block, I got the following error.                                         ```