analog clockstuff

1 files changed, 88 insertions, 0 deletions

diff --git a/bin/readtemp.py b/bin/readtemp.py
new file mode 100755
index 0000000..654b615
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+++ b/bin/readtemp.py
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+#!/usr/bin/python
+#-------------------------------------------------------------------readtemp.py
+#
+#  detect i2c temperature sensor, read it, and put its data where node_exporter
+#  will send it to prometheus.
+# 
+# (C) D Delmar Davis 2023-24 
+#
+# Note: POC lots of hard coded foo here....
+# should probly be some sort of  arguments for file name.
+# your crontab should look like this
+# */1 * * * * /usr/local/bin/readtemp.py
+
+import sys
+import board
+import adafruit_tc74
+import adafruit_ahtx0
+import adafruit_sht4x
+import adafruit_mcp9808
+from adafruit_dps310.basic import DPS310
+import tempfile
+import os
+
+i_can_has_temperature = False
+i_can_has_humidity = False
+i_can_has_pressure = False
+temperature_read=0
+humidity_read=0
+pressure_read=0
+
+i2c = board.I2C()  # uses board.SCL and board.SDA
+print(i2c.scan())
+for tempsensorid in i2c.scan():
+    if (tempsensorid==72):
+        print ("found a TC74")
+        sensor = adafruit_tc74.TC74(i2c)
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
+    elif (tempsensorid==56):
+        print ("found an AHTx0")
+        sensor = adafruit_ahtx0.AHTx0(i2c)
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
+        humidity_read = sensor.relative_humidity
+        i_can_has_humidity = True
+    elif (False): #tempsensorid==44):
+        print ("found an SHT4x")
+        sensor = adafruit_sht4x.SHT4x(board.I2C())
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
+        humidity_read = sensor.relative_humidity
+        i_can_has_humidity = True
+    elif (tempsensorid==119):
+        print ("found a EPS310")
+        sensor = DPS310(i2c)
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
+        pressure_read = sensor.pressure
+        i_can_has_pressure = True
+    elif (tempsensorid==24):
+        print ("found an mcp9808")
+        sensor = adafruit_mcp9808.MCP9808(i2c)
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
+    else:
+        print ("found something else ", tempsensorid)
+
+if (i_can_has_temperature):
+    
+    tmpfile =os.path.join(tempfile.gettempdir(),'temp.prom')
+    file = open(tmpfile, 'w')
+    sys.stdout = file
+    print("# HELP home_temperature_farenheit Temperature read off of external sensor.")
+    print("# TYPE home_temperature_farenheit gauge")
+    print("home_temperature_farenheit %0.3f" % ((temperature_read * 1.8) + 32.0))
+    print("# HELP home_temperature_celsius Temperature read off of external sensor.")
+    print("# TYPE home_temperature_celsius gauge")
+    print("home_temperature_celcius %0.3f" % temperature_read)
+    if (i_can_has_humidity):
+        print("# HELP home_relative_humidity Temperature read off of external sensor.")
+        print("# TYPE home_relative_humidity gauge")
+        print("home_relative_humidity %0.3f" % humidity_read)
+    if (i_can_has_pressure):
+        print("# HELP home_barometric_pressure Barometric Pressure read off of external sensor.")
+        print("# TYPE home_barometric_pressure gauge")
+        print("home_barometric_pressure %0.3f" % pressure_read)
+    file.close()
+    os.replace(tmpfile, '/var/lib/prometheus/node-exporter/temp.prom')