STM32DV446 MODEM & mmdvmhost communication problem

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K1IMD
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STM32DV446 MODEM & mmdvmhost communication problem

Post by K1IMD »

I have a mmdvmhost communications problem. Upgraded my ZUMRadio v 0.9 STM32DV446 (HAT) board compiled on the RPI 3+ without error and uploaded to the processor without error. The date of the previous firmware was 2017 because this was a spare board for the dozen or so repeaters I had built and needed to update it. The firmware needed to be updated.
I don't know if there is a problem with the switches in Config.h file that was used to compile the upload or the mmdvmhost running in Pi-Star. The serial speed of the latest firmware appears to be 406800 verses the standard Pi-Star speed of 115200. There may be other issues as well but the mmdvm/pi-star log indicates that mmdvmhost cannot communicate with the modem. Have tried the UART serial speed of 115200 & 406800 in mmvdvm(.ini) either seem to work.
I have done these upgrades a number of times over the years but never had this problem. Has anyone else experienced this issue? If so how did you fix it.
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K1IMD
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K1IMD
M1DNS
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Re: STM32DV446 MODEM & mmdvmhost communication problem

Post by M1DNS »

Yep, known issue.
Pistar runs older vers of mmdvmhost that run at the lower speed.

There were several posts here and on the fb group regards updating firmware on rptr boards.

AFAIU. We havnt moved the revision of mmdvmhost up in pistar as many active remote rptrs will fail moments after they pull in the overnight updates if we doso.

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Andrew M1DNS.
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K1IMD
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Location: Corpus Christi, TX USA

Re: STM32DV446 MODEM & mmdvmhost communication problem

Post by K1IMD »

Hi Andrew,
I kinda figured that might be the issue. I believe I read that you needed to have the faster data rate for FM and that 115200 would not work. So... I guess I must recompile at 115200 verses the 406800 required for FM. Bummah

Is there a migration plan to update mmdvmhost to the latest? I get the auto update issue would break all running versions of Pi-Star in one fell swoop...

I would like to run dual mode FM & DMR... If I want to do that I will need to run the CLI version which I have on a couple repeaters that I only have ssh access to using autossh behind firewalls.

Thank you!
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K1IMD
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K1IMD
M1DNS
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Re: STM32DV446 MODEM & mmdvmhost communication problem

Post by M1DNS »

There was talk of moving the vers. of mmdvmhost up in pistar, but then Jon made us aware of the baud rate changes, which has held us where we are currently.
Pistar has always remained a revision or so below current as we know they were well tested and proven, but this new change needs time to allow for reason mentioned above.

If you need the latest vers of mmdvmhost, a vanilla install will be your current option.

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Andrew M1DNS.
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