From: gregor herrmann <gregor@toastfreeware.priv.at>
Date: Wed, 28 Oct 2020 15:35:14 +0000 (+0100)
Subject: warn during warmup
X-Git-Url: https://git.toastfreeware.priv.at/toast/airingbutler.git/commitdiff_plain/a51d525b75ead2c23ef83795d8ff60b76796d72c?hp=a51d525b75ead2c23ef83795d8ff60b76796d72c

warn during warmup

output a warning '(W)' after the co2 value during the first minute,
if the value is -1 or 410 which seems to happen each time after powering the
board on for a couple of measurements.
---