add barametric pressure sensor

7 files changed, 60 insertions, 15 deletions

diff --git a/docs/connections.md b/docs/connections.md
new file mode 100644
index 0000000..d7e003a
--- /dev/null
+++ b/docs/connections.md
@@ -0,0 +1,4 @@
+- dht20 ![dht20](images/dht20pins.png)
+- tc74 ![tc74](images/tc74.png)
+- pi header ![pihead](images/pihead.png)
+- qwiic ![qwiic](images/qwiic.png)
\ No newline at end of file
diff --git a/docs/images/qwiic.png b/docs/images/qwiic.png
new file mode 100644
index 0000000..56e50bf
--- /dev/null
+++ b/docs/images/qwiic.png
diff --git a/docs/images/refinement.png b/docs/images/refinement.png
new file mode 100644
index 0000000..97bcdf0
--- /dev/null
+++ b/docs/images/refinement.png
diff --git a/fetchtemp.py b/fetchtemp.py
new file mode 100755
index 0000000..92a4b8f
--- /dev/null
+++ b/fetchtemp.py
@@ -0,0 +1,6 @@
+#!/usr/bin/python
+with open('/var/lib/prometheus/node-exporter/temp.prom', 'r') as f:
+    for line in f.readlines():
+        if 'Xhome_temperature_farenheit' in ('X'+line) :
+            print(line.split(' ')[1])
+
diff --git a/fetchtemp.py.save b/fetchtemp.py.save
new file mode 100644
index 0000000..6297272
--- /dev/null
+++ b/fetchtemp.py.save
@@ -0,0 +1,8 @@
+
+with open('/var/lib/prometheus/node-exporter/temp.prom', 'r') as f:
+    for line in f.readlines():
+        if 'Xhome_temperature_farenheit' in ('X'+line) :
+            print(line)
+        else:
+            print("???", line, "???")
+
diff --git a/readtemp.py b/readtemp.py
index 9e2e112..899fc47 100755
--- a/readtemp.py
+++ b/readtemp.py
@@ -7,32 +7,51 @@ import sys
 import board
 import adafruit_tc74
 import adafruit_ahtx0
+import adafruit_sht4x
+from adafruit_dps310.basic import DPS310
 import tempfile
 import os
 
-GotTemperature = False
-GotHumidity = False
-TempRead=0
-HumidityRead=0
+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)
-        TempRead=sensor.temperature
-        GotTemperature = True
+        temperature_read=sensor.temperature
+        i_can_has_temperature = True
     elif (tempsensorid==56):
         print ("found an AHTx0")
         sensor = adafruit_ahtx0.AHTx0(i2c)
-        TempRead=sensor.temperature
-        GotTemperature = True
-        HumidityRead = sensor.relative_humidity
-        GotHumidity = True
+        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
     else:
         print ("found something else ", tempsensorid)
 
-if (GotTemperature):
+if (i_can_has_temperature):
     
     tmpfile =os.path.join(tempfile.gettempdir(),'temp.prom')
 
@@ -41,13 +60,17 @@ if (GotTemperature):
     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" % ((sensor.temperature * 1.8) + 32.0))
+    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" % sensor.temperature)
-    if (GotHumidity):
+    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" % sensor.relative_humidity)
+        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')
diff --git a/requirements.txt b/requirements.txt
index 4c4e447..b29d2e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,12 @@
 Adafruit-Blinka==8.20.1
 adafruit-circuitpython-ahtx0==1.0.18
 adafruit-circuitpython-busdevice==5.2.6
+adafruit-circuitpython-dps310==2.1.12
+adafruit-circuitpython-epd==2.12.0
+adafruit-circuitpython-framebuf==1.6.3
 adafruit-circuitpython-register==1.9.16
 adafruit-circuitpython-requests==2.0.1
+adafruit-circuitpython-sht4x==1.0.17
 adafruit-circuitpython-tc74==1.0.15
 adafruit-circuitpython-typing==1.9.4
 Adafruit-PlatformDetect==3.49.0