# HG changeset patch
# User Matt Johnston <matt@ucc.asn.au>
# Date 1561560723 -28800
# Node ID 97d99eb42d27afd4e6093a085c6d19e241696f85
# Parent  9e2181e3ce6d060066d14393b4002ec5cca0aac8
temp == 0 is a problem

diff -r 9e2181e3ce6d -r 97d99eb42d27 py/sensor_ds18b20.py
--- a/py/sensor_ds18b20.py	Fri Feb 17 21:22:59 2017 +0800
+++ b/py/sensor_ds18b20.py	Wed Jun 26 22:52:03 2019 +0800
@@ -62,7 +62,7 @@
                 D("no match")
                 return None
             temp = int(match.groups(1)[0]) / 1000.0
-            if temp > 80:
+            if temp > 80 or temp == 0:
                 E("Problem reading sensor '%s': %f" % (s, temp))
                 return None
             return temp