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Ryde problems

Posted: Tue Sep 15, 2020 1:15 pm
by g8vpg
I am testing a symbol rate scanning Ryde receiver for GB3ZZ and am having great trouble getting it to operate in a stable manner. The problem is that after a period of correct operation, it comes up with "Longmynd not loaded" and then requires a reboot.
The Pi is operating on 5.25V and the low voltage lightning symbol never appears. Today, I have completely rewritten the card with the latest software.
I have been told that this problem occurs if the Minitioune board is unpowered or not correctly connected by USB. Minitioune is correctly powered. I have plugged it into a PC with Minitioune software and it works well. I have tried two different USB cables which are quite short and they both work well.
G4BVK has had similar issues with "Longmynd not loaded" coming up at times. I am out of things to try now and hope that perhaps the experts can shed some light on this problem.
73 Shaun.

Re: Ryde problems

Posted: Tue Sep 15, 2020 6:37 pm
by MW0RUD
Hi Shaun,
This sounds like longmynd crashing for some reason or outputting an unexpected error. Can you reproduce it reliably? as it should output some debugging information when it crashes if you run it directly.

To run it directly shutdown the app from the power menu then run the following from the ssh console.

Code: Select all

cd /home/pi/ryde
python3 -m rydeplayer /home/pi/ryde/config.yaml
Tim

Re: Ryde problems

Posted: Wed Sep 16, 2020 9:12 am
by g8vpg
Thanks Tim,
I will try this and report back.
73 Shaun.

Re: Ryde problems

Posted: Wed Sep 16, 2020 10:26 am
by g8vpg
Tim,

I have emailed you direct because the text is too long for the forum.

73 Shaun.

Re: Ryde problems

Posted: Wed Sep 16, 2020 12:27 pm
by MW0RUD
Thanks Shaun,
The relevant bit turns out to be the bit at the end:

Code: Select all

Flow: No-data timeout, re-init config.
Flow: Config cycle: Frequency [0] = 1249000 KHz, Symbol Rate [2] = 2000 KSymbols/s
Flow: NIM init
Flow: STV0910 init
Flow: stv0910 init regs
      Status: STV0910 MID = 0x51, DID = 0x20
Flow: STV0910 set MCLK
Flow: Setup equlaizers 1
Flow: Setup carrier loop 1
Flow: Setup timing loop 1
Flow: Tuner init
Flow: Tuner cal lowpass
Flow: Tuner set freq
      Status: tuner:0, f_vco=0x261dd0, icp=0x1, f=0x22222, n=0xa6,
              rdiv=0x1, p=0x0, freq=1249000, cfhf=4118
ERROR: tuner wait on lock timed out
ERROR: Tuner set freq 1249000
ERROR: Failed to init Tuner 1249000, 0
ERROR: failed to init a device - is the NIM powered on?
Longmynd thinks its a hardware fault but it could also be a Longmynd bug.

How long does it take to fail usually? Is there anything unusual about your hardware setup? Just trying to work out if I can make my pi do it.
Tim

Re: Ryde problems

Posted: Wed Sep 16, 2020 2:30 pm
by g8vpg
Tim,
Today it was failing within five minutes. Ken G4BVK is having similar trouble. It is an absolutely standard mk.II Minitioune board fed from a good quality 12V bench power supply.
73 Shaun.