Raspberry Pi 3 not working

ladecadence commented 8 years ago

It looks rpidatv is buggy in the raspberry pi 3. Using leandvb on my laptop (or any other sdr app, like gqrx), I can see the signal coming and then going flat after a few seconds, then coming again, etc. I don't know if it's something related to the GPIOs on the pi3. I have the last raspbian version, updated as of today. When I call rpidatv on the console I got this:

sudo ./rpidatv -i ../video/mire.jpg -s 250 -c 1/2 -m RF -f 437.5 RPIDATV Version May 25 2016 (F5OEO Evariste) on Model 2Tuning on 437.532046 MHZ (harmonic 5) Nb PCM STEP (<1000):999

TS Bitrate should be 230392 bit/s 1464181813:921022107 : Fulling buffer TSrate in byte =28799 Init Filling Memory buffer 0 .End Init Filling Memory buffer 71440 Filling BUffer : EOF Memavailable 832840/1880000 FreeSlot=60736/64000 Bitrate : 0.000000 SYNC ERROR SYNC ERROR SYNC ERROR SYNC ERROR SYNC ERROR SYNC ERROR ...

and lots and lots of SYNC ERROR messages.

F5OEO commented 8 years ago

It is due to cpu frequency which is changed by the kernel. Try this : in /boot/config.txt add disable_pvt=1 force_turbo=1

F5OEO commented 8 years ago

Carefull : input video file should be a Transport stream (.ts). If you want to transmirt a picture (jpeg) , you have to convert it to transport stream first( with ffmpeg for example). You could see in /scripts/a.sh how the picture is transformed in transport stream. SYNC ERRO means it is not a transport stream.

csarmo commented 8 years ago

But i also try some of the .ts file from this page: http://www.dododge.net/roku/ts-samples.html but it gave me the same SYNC ERROR. Maybe the symbol rate of the .ts file i selected is too high or is another thing ?

F5OEO commented 8 years ago

No matter with symbolrate, seems that it is not a 188 sync byte transport stream or with errors (note in the source page). Need to provide a sample transport stream file to be a reference.

F5OEO commented 8 years ago

Commit : https://github.com/F5OEO/rpidatv/commit/9df92f7df7be2b469a5fd55a70ff72d65a1a9c9b Should now work with Raspberry pi 3 : need Jessie (bye bye Wheezzy)

MendoMiranda commented 7 years ago

Hi Evariste. Regarding this issue I can´t have a good MPEG2 Transmission on Pi3. Spectrum is noisy and incorrect. I got clean transmission in Pi B+ and received clean in a PI3 with leandvb. But, inverting puting the Pi3 in transmissions I can´t receive nor fill the cache ... Spectrum is bad like the picture. Options on config.txt disable_pvt=1 force_turbo=1 did nothing better. What you suggest to put a clean transmission on Pi3 ? Note PI3 RF is on Pin 32 But on Pi B+ is on Pin 12. Thank you for fantastic work that allows me to learn something about DVB-S. Regards and look the pictures Hamradio CT4BB

F5OEO commented 7 years ago

Thx Carlos, have to warn to install raspbian lite or debug why full raspbian has issue

MendoMiranda commented 7 years ago

Yes Evariste. I have done it and I´m testing. Thank you for your work in the new age of Ham Radio. CT4BB

F5OEO commented 7 years ago

HI Carlos,

Can you give a test with the dev branch ? I made a commit for issue with RF on Raspberry 3.

MendoMiranda commented 7 years ago

More tests done. Pis are 6 meter apart and they are in connection. PiB+ -> Pi3 good image, cache fills quick but some times no... Pi3 -> Pi B+ cache always fills slowly but when full, one perfect freeze image appears. My conclusion is: Noise is present in constellation . So, I have to add a passband filter and amplifier for 437 MHz .

73 and Tnx CT4BB

F5OEO commented 7 years ago

Thx for analysis... Seems that Pi3 has issue regarding your tests. Is it with dev branch or master branch ? To use dev branch : git checkout dev

MendoMiranda commented 7 years ago

Hi Evariste.

I tested both with same results. Cache filling speed varies with Pis positions !!...

I’m sure the problem is noise. I will filter the frequency and amplify it.

I will let you know the results later.

73

CT4BB

Carlos

http://www.ct4bb.com

QTH : IM58Jr

De: F5OEO [mailto:notifications@github.com] Enviada: 14 de maio de 2017 10:36 Para: F5OEO/rpidatv rpidatv@noreply.github.com Cc: MendoMiranda ct4bb@ct4bb.com; Comment comment@noreply.github.com Assunto: Re: [F5OEO/rpidatv] Raspberry Pi 3 not working (#22)

Thx for analysis... Seems that Pi3 has issue regarding your tests. Is it with dev branch or master branch ? To use dev branch : git checkout dev

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/F5OEO/rpidatv/issues/22#issuecomment-301301161 , or mute the thread https://github.com/notifications/unsubscribe-auth/AahXjHVfJGaa-4gGqMOJ64RHzDebhzkfks5r5ssWgaJpZM4ImhMg . https://github.com/notifications/beacon/AahXjB4PeYPxsyDcsR2DachFyAaIlLoHks5r5ssWgaJpZM4ImhMg.gif

F5OEO / rpidatv

Raspberry Pi 3 not working #22