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authorDaniel Friesel <derf@finalrewind.org>2022-05-26 08:57:35 +0200
committerDaniel Friesel <derf@finalrewind.org>2022-05-26 08:57:35 +0200
commitfc6548b89650a04ece9e08ad32e4161692c2db41 (patch)
tree9770ca4f829546d6f9a63c182f4630488110a7ef
parentf4d699388cf65b5c883473eb9c7a12109e19ef11 (diff)
README: document temperature and ABC readingsHEADmain
-rw-r--r--README.md7
1 files changed, 6 insertions, 1 deletions
diff --git a/README.md b/README.md
index f6fed93..fa86ebd 100644
--- a/README.md
+++ b/README.md
@@ -47,13 +47,18 @@ port:on("data", 9, uart_callback)
function uart_callback(data)
if mh_z19.parse_frame(data) then
- -- mh_z19.co2 contains the CO₂ concentration in ppm
+ -- mh_z19.co2 : CO₂ concentration [ppm]
+ -- mh_z19.temp : device temperature [°c]
+ -- mh_z19.abc_ticks : ticks since last Automatic Baseline Correction
+ -- mh_z19.abc_count : number of Automatic Baseline Corrections performed since power-on
end
end
port:write(mhz19.c_query)
```
+The sensor performs a CO₂ measurement every one to five seconds, depending on hardware revision.
+
## Application Example
**init.lua** is an example application with HomeAssistant integration.