Test Board Scan

1 files changed, 24 insertions, 14 deletions

diff --git a/readtemp.py b/readtemp.py
index 775184e..9b984a1 100755
--- a/readtemp.py
+++ b/readtemp.py
@@ -8,20 +8,30 @@ import board
 import adafruit_tc74
 import tempfile
 import os
+
+GotTemperature = False
+TempRead=0
+
 i2c = board.I2C()  # uses board.SCL and board.SDA
-# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
-sensor = adafruit_tc74.TC74(i2c)
+for tempsensorid in i2c.scan():
+    if (tempsensorid=72):
+        print ("found a TC74")
+        sensor = adafruit_tc74.TC74(i2c)
+        TempRead=sensor.temperature
+        GotTemperature = True
 
-tmpfile =os.path.join(tempfile.gettempdir(),'temp.prom')
+if (GotTemperature):
+    
+    tmpfile =os.path.join(tempfile.gettempdir(),'temp.prom')
 
-#file = open('/var/lib/prometheus/node-exporter/temp.prom', 'w')
-file = open(tmpfile, 'w')
-sys.stdout = file
-print("# HELP ambient_temperature_farenheit Temperature read off of external sensor.")
-print("# TYPE ambient_temperature_farenheit gauge")
-print("ambient_temperature_farenheit{type=\"backyard\"} %0.3f" % ((sensor.temperature * 1.8) + 32.0))
-print("# HELP ambient_temperature_celsius Temperature read off of external sensor.")
-print("# TYPE ambient_temperature_celsius gauge")
-print("ambient_temperature_celcius{type=\"backyard\"} %0.3f" % sensor.temperature)
-file.close()
-os.replace(tmpfile, '/var/lib/prometheus/node-exporter/temp.prom')
+    #file = open('/var/lib/prometheus/node-exporter/temp.prom', 'w')
+    file = open(tmpfile, 'w')
+    sys.stdout = file
+    print("# HELP ambient_temperature_farenheit Temperature read off of external sensor.")
+    print("# TYPE ambient_temperature_farenheit gauge")
+    print("ambient_temperature_farenheit{type=\"backyard\"} %0.3f" % ((sensor.temperature * 1.8) + 32.0))
+    print("# HELP ambient_temperature_celsius Temperature read off of external sensor.")
+    print("# TYPE ambient_temperature_celsius gauge")
+    print("ambient_temperature_celcius{type=\"backyard\"} %0.3f" % sensor.temperature)
+    file.close()
+    os.replace(tmpfile, '/var/lib/prometheus/node-exporter/temp.prom')