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Raspberry Pi 3 + TNC-Pi issue with serial port


 

Hello,

A few years ago I installed a BBS on a Raspberry with a TNC-Pi2. Unfortunatly my SD card died recently and I had to re-install all.

I follow the last version of the documentation available on but I'm not able to get "pitnc_getparams"? working (Raspberry Pi3 B).

- I installed Raspbian Stretch (2019-04-08-raspbian-stretch-lite.img)
- I set the Serial port as mentioned (serial login shell disable/serial interface enable).
- Then I downloaded the the pitnc_get/set_param binaries, made them executable and launch "./pitnc_getparams /dev/serial0 0"? but it is constantly "retrying..." .
- Just in case I tried with ttyAMA0 but it is not better...

I also tried to follow the note mentioned in the documentation "Note added 12/4/2018" but it is not working better, I even try with Raspbian version with the GUI, still the same...

Now I don't know where to search to troubleshoot the issue, if you have some advices to guide me, they are welcome :-)

Thank you


 

I had a similar problem, and realized that I forgot to activate the serial port in rasbpi-config.? That is where I would start.? YMMV and good luck OM

73 de KD8SKZ,
Levi


 

Try these steps:

Disable Bluetooth
Insert dtoverlay=pi3-disable-bt into /boot/config.txt

Disable hciuart
systemctl disable hciuart

Disable serial getty
systemctl disable serial-getty@...

Reboot Raspberry Pi
systemctl reboot

When Pi is back on, try running the pitnc programs as root or use sudo

Steve KC1AWV


On Thu, Oct 10, 2019 at 12:04 PM <js8call@...> wrote:
Hello,

A few years ago I installed a BBS on a Raspberry with a TNC-Pi2. Unfortunatly my SD card died recently and I had to re-install all.

I follow the last version of the documentation available on but I'm not able to get "pitnc_getparams"? working (Raspberry Pi3 B).

- I installed Raspbian Stretch (2019-04-08-raspbian-stretch-lite.img)
- I set the Serial port as mentioned (serial login shell disable/serial interface enable).
- Then I downloaded the the pitnc_get/set_param binaries, made them executable and launch "./pitnc_getparams /dev/serial0 0"? but it is constantly "retrying..." .
- Just in case I tried with ttyAMA0 but it is not better...

I also tried to follow the note mentioned in the documentation "Note added 12/4/2018" but it is not working better, I even try with Raspbian version with the GUI, still the same...

Now I don't know where to search to troubleshoot the issue, if you have some advices to guide me, they are welcome :-)

Thank you



--
Steve Miller
KC1AWV


 

Thank you very much for your fast answers.

Unfortunately it is still not working.

I will continue investigations, I hope I'll be able to post there the solution...

73


 

I have the same problem with Pi 3 and a Pi 4.

James VE7HJ


From: js8call@...
To: "RaspberryPi-4-HamRadio" <[email protected]>
Sent: Thursday, October 10, 2019 12:40:36 PM
Subject: Re: [RaspberryPi-4-HamRadio] Raspberry Pi 3 + TNC-Pi issue with serial port

Thank you very much for your fast answers.

Unfortunately it is still not working.

I will continue investigations, I hope I'll be able to post there the solution...

73


 

I had a problem that pitnc_getparams would not work if the ax.25 service was running. Since I have ax.25 set to autostart, I have to stop the service before I run pitnc_getparams.
--
Bob AF9W


 

Still not solved, always investigating :-(