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Suppress M261.1 Modbus comm error when V passed #1035

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benagricola
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Quick overview on the forum - but in short, it is already possible to check the status of the Modbus request by checking that the value of the variable is not null.

The error message output by M261.1 on Modbus communication failure is unnecessary for reads where the null result ends up in a variable anyway, and just ends up spamming the console when using the command programmatically.

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@benagricola benagricola force-pushed the 3.6-dev branch 3 times, most recently from 318db3a to 0ccba92 Compare August 21, 2024 19:38
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Whoops, capitalisation error in the previous commit (nullPtr != nullptr 🤦) - fixed now, should be good to go.

Signed-off-by: Ben Agricola <ben+git@agrico.la>
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@dc42 Anything else that needs doing to get this merged?

Modbus error reporting is problematic if you're calling M261.1 from inside daemon.g, as the error will cause daemon.g to exit as well.

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