Thanks for your explanation. ssh-ing in as root did work fine.
I find that the rtl_ programs do work, like rtl_fm. I also understand your approach to embedded real-time applications. This probably works particularly well for the PlutoSDR. My goal is for student use, where they are particularly graphical user interface aware. Best regards Glen > On May 29, 2020, at 1:57 AM, jean-michel.fri...@femto-st.fr wrote: > > It is indeed my belief that there is no point in running a graphical user > interface on an embedded system, much less a windowing system. If an embedded > board is supposed to interact with a user, a Qt5 or SDL dedicated interface > will be much lighter and efficient than a X-Window server and a window manager > client. > > This is the reason for providing the examples at the end of the tutorial > where a Non GUI flowgraph is generated, the resulting Python script sent to > the embedded board and running there, possibly streaming the output (in my > example 0-MQ) to a client. In the case of gr-acars, I just fetch periodically > the log-file from the RPi4 to the host computer for analysis. > > Nevertheless if you want to go in the windowing system direction, Buildroot > seems to provide Xorg support: > > make menuconfig > Target packages -> Graphic libraries and applications -> X.org X Window System > > I have never used nor tested, so I have no idea how much space/how long it > takes > to compile. > > There is no binary package management system with buildroot: the whole point, > which > makes is different from OpenEmbedded/Yocto, is to generate a custom minimal > image with only the needed tools and not compile all possible binary packages > (the disk size difference being about 10-fold, with about 8 GB needed for > buildroot when my attempt at completing the OpenEmbedded system ended at about > 80 GB and many unnecessary binary packages). > > The default network configuration is to fetch the IP address from a DHCP > server. > Otherwise add an etc/network/interfaces entry in the output/target directory > of buildroot with the static IP configuration, and > make > to re-generate sdcard.img including this configuration file. Similarly if the > usr/share/uhd/images binary files are needed: copy in output/target and make. > > JM > > -- > JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe, > 25000 Besancon, France > > May 29, 2020 3:33 AM, "Glen Langston" <glen.i.langs...@gmail.com> wrote: > >> Hi >> >> Thanks for your help. >> >> I’ve written the image to an SDCARD and the PI4 boots to >> the command line prompt. The password is accepted and >> I’ve looked around. >> >> Gnuradio seems to be installed, but not the xwindow system. >> >> How do you use gnuradio-companion etc? >> >> I could not find “xstartup” or some such program. >> >> Thanks >> >> Glen >> >>> On May 24, 2020, at 3:59 PM, jean-michel.fri...@femto-st.fr wrote: >>> >>> I have uploaded http://jmfriedt.org/sdcard.img >>> my Buildroot image generated for RPi4 that I have been >>> using daily for the last 2 months, so pretty sure it is >>> working. Actually it is 1.1 GB because of lapack needed >>> for gnss-sdr but GNU Radio 3.8/Python3 will only require >>> about 500 MB. >>> Gwenhael Goavec-Merou ported all GNU Radio related software/libraries >>> to Buildroot: the missing parts for gnss-sdr are found at >>> https://github.com/oscimp/PlutoSDR in the for_next branch. >>> >>> root passwd=root, no user account, USRP FPGA images to be added >>> in usr/share/uhd/images manually if libuhd is needed. Tested with >>> RTL-SDR DVB-T dongle, PlutoSDR (gr-iio) and B210. >>> >>> JM >>> >>> -- >>> JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe, >>> 25000 Besancon, France >>> >>> May 24, 2020 9:51 PM, "Glen I Langston" <glen.i.langs...@gmail.com> wrote: >>> >>>> Hello >>>> >>>> I’ve been a great proponent of gnuradio, but I’m finding in >>>> increasing difficult to do anything new, as installation of 3.8 is >>>> essentially impossible for most people. >>>> >>>> I’ve written and built my own python modules and C++ blocks. >>>> >>>> However, despite months of trying now, I can not get 3.8 to install >>>> on a raspberry pi. >>>> >>>> Has anyone achieved 3.8 on a raspberry pi? >>>> >>>> If so can you please save the entire OS, gzip compressed and put it >>>> online somewhere. It will probably be about 3 GB compressed. >>>> >>>> Thanks >>>> >>>> Glen >>>> >>>> Note that there are many many (too many) different guides on line >>>> >>>> 1) apt-get >>>> >>>> 2) pybombs >>>> >>>> 3) git clone then build >>>> >>>> each one fails in a different way.
