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raspi cannot read sdm when rs485 is 1st serial #28

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MatzeJoerling opened this issue Apr 4, 2018 · 3 comments
Open

raspi cannot read sdm when rs485 is 1st serial #28

MatzeJoerling opened this issue Apr 4, 2018 · 3 comments

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@MatzeJoerling
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searching some time for that, if you rs485 is the 1st serial in your raspi the kernel / init starts a console on it.
after that no real comminication with sdm is possible.
i had to remove the console serial stuff from /boot/cmdline.txt

Only for the docs

@RubberDucky007
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Does this affect only the real serial console (on GPIO) or 'console=tty1' in cmdline.txt too? My RS-485 adapter is /dev/ttyUSB0.

@andig
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andig commented Mar 16, 2019

Does this affect only the real serial console (on GPIO) or 'console=tty1' in cmdline.txt too? My RS-485 adapter is /dev/ttyUSB0.

Do you have any problem with /dev/ttyUSB0? Working for me.

@RubberDucky007
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No Problems so far i know. But thinking about the posibility this causes Problems getting all Values from the meter. Working with 24008N1 or 24008E1 all the same. L3=L2 and some doubled (calculated) so it can't be useful.

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3 participants