Strompi 3 – V1.72 – Serial Port always active after running Start_Serialless.py

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Hello there,
Is there any reason why the Strompi 3 still answers on the serial port (minicom -s on /dev/serial0) after I enabled the „serialless“ mode using sspc/quit , and run „Start_Serialless.py“? This prevents me from using the „ultimate GPS HAT“ that uses the uart. Of course the GPS HAT is not placed during the following explanations:
I used GPIO_TPIN = 19 and soldered pin 20 on the reset pad, reset jumper still on (as described in the user manual),
and the „powershutdown_serialless.py“ script, also using the GPIO_TPIN = 19, works.
I start „Start_Serialless.py &“ followed by „powershutdown_serialless.py“ in /etc/rc.local as recommended in the user manual. I also run „Start_Serialless.py“ in the command line, but strompi is still active on serial port.
Strompi 3 freshly flashed with V1.72 with V1.72 scripts used.
Do you have hint what I could have done wrong?
Should I use a separate pin for „Start_Serialless.py“ than „powershutdown_serialless.py“?
Otherwise it’s a nice little PSU and I’m eager to have a look at the open code at some point!

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7 Answers

Anonymous 0 Comments

Dear Jordan, dear Nils,
It finally worked with GPIO 26 after I tried other pins. I think it’s because I have I2S enabled (although with GPIO 16 it did not worked either, I have no idea why). Anyway, most important, it works.
Thank you very much for your feedback! It kept my trying.
Best regards,
Elvis

Answered question

Dear Elvis,
we think you did everything the way it is intended and it is hard to recognize the problem without having your hardware in front of us. We recommend going back to firmware version 1.70 and try to configure it there. If the problem still persists we think it is an hardware malfunction.
Best regards
Jordan(Joy-IT)

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Anonymous 0 Comments

Thanks Nils,
This I did. Any other hint? Can the „Auto“ jumper has an effect? Should I revert to a firmware older than V1.72?
Best regards,
Elvis

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Good morning,
as you connect just one GPIO pin to the StromPi, this one pin need to be defined in every script.

Best regards
Nils (Joy-IT)

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Anonymous 0 Comments

Is the gpio pin used in „Start_Serialless.py“ supposed to be the same as „powershutdown_serialless.py“ ?

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