Working sound setup for raspis

roles/pi-dhtsensor/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+dht_pin: 12
+dht_polling_sleep_time_seconds: 20

roles/pi-dhtsensor/files/dht22_sensing.py

@@ -4,20 +4,20 @@
 import requests
 import json
 import time
-import board
-import adafruit_dht
+import Adafruit_DHT
 
 config = json.load(open("/etc/dht22_sensing.json"))
-dht_device = adafruit_dht.DHT22(getattr(board, config['dht_pin']))
 
 
 def send_to_home_assistant(temperature, humidity):
+    # print(f"Sending temperature {temperature}, humidity {humidity}")
     headers = {
         'x-ha-access': config['token'],
         'Authorization': "Bearer {}".format(config['token'])
     }
 
-    temperature_url = "{}/api/states/sensor.{}".format(config['ha_url'], config['ha_temp_sensor_name'])
+    temperature_url = "{}/api/states/sensor.{}".format(
+        config['ha_url'], config['ha_temp_sensor_name'])
     temperatur_data = {
         "state": str(temperature),
         "attributes": {
@@ -28,7 +28,8 @@ def send_to_home_assistant(temperature, humidity):
     }
     requests.post(temperature_url, json=temperatur_data, headers=headers)
 
-    humidity_url = "{}/api/states/sensor.{}".format(config['ha_url'], config['ha_humidity_sensor_name'])
+    humidity_url = "{}/api/states/sensor.{}".format(
+        config['ha_url'], config['ha_humidity_sensor_name'])
     humidity_data = {
         "state": str(humidity),
         "attributes": {
@@ -40,14 +41,9 @@ def send_to_home_assistant(temperature, humidity):
     requests.post(humidity_url, json=humidity_data, headers=headers)
 
 
-def sense():
-    try:
-        send_to_home_assistant(dht_device.temperature, dht_device.humidity)
-    except RuntimeError as error:
-        # Errors happen fairly often, DHT's are hard to read, just keep going
-        print(error.args[0])
-    time.sleep(config['polling_sleep_time_seconds'])
-
-
-while True:
-    sense()
+if __name__ == "__main__":
+    while True:
+        sensor = Adafruit_DHT.DHT22
+        humidity, temperature = Adafruit_DHT.read_retry(sensor, config['dht_pin'])
+        send_to_home_assistant(temperature, humidity)
+        time.sleep(float(config['polling_sleep_time_seconds']))

roles/pi-dhtsensor/tasks/main.yml

@@ -0,0 +1,29 @@
+---
+# Use the deprecated version here instead, not the new circuitpython adafruit-circuitpython-dht version
+# the new version needs a lot of CPU time and doesn't work correctly on old raspi 1
+# a copy of the deprecated repo is downloaded as zip (if it goes away)
+
+- name: Uninstall libgpiod2 (circuitpython) if present
+  apt: name=libgpiod2 cache_valid_time=7200 state=absent
+- name: pip uninstall adafruit-circuitpython-dht
+  pip:
+    name: adafruit-circuitpython-dht
+    executable: pip3
+    state: absent  
+- name: pip install adafruit-dht
+  pip:
+    name: adafruit-dht
+    executable: pip3
+- name: Install script config
+  template: src=dht22_sensing.json dest=/etc/dht22_sensing.json
+- name: Install script
+  copy: src=dht22_sensing.py dest=/usr/bin/dht22_sensing owner=root mode=u+rwx
+- name: Install systemd service file
+  copy: src=dht22_sensing.service dest=/lib/systemd/system/
+- name: Add script to autostart and start now
+  systemd: name=dht22_sensing state=restarted enabled=yes daemon_reload=yes
+- name: Add to sysdweb
+  include_role:
+    name: pi-sysdweb
+  vars:
+    sysdweb_name: dht22_sensing

roles/pi-dhtsensor/templates/dht22_sensing.json

@@ -1,8 +1,8 @@
 {
-  "ha_url": "https://ha.bauer.tech",
-  "token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIxNjkxMWIzZmQ4ZWU0NDI0OTg0MjA0ZDllMDhkNGRlMCIsImlhdCI6MTU3ODE3MDU5MSwiZXhwIjoxODkzNTMwNTkxfQ.i7CdXEZy9DV9KPHAl-msK0rOfIUlPYo4zwwJ4UGhXuc",
-  "dht_pin": "D12",
-  "polling_sleep_time_seconds": 5,
+  "ha_url": "{{home_assistant_url}}",
+  "token": "{{home_assistant_token}}",
+  "dht_pin": "{{dht_pin}}",
+  "polling_sleep_time_seconds": "{{dht_polling_sleep_time_seconds}}",
 
   "ha_temp_sensor_name": "{{sensor_room_name_ascii|lower}}_dht22_temperatur",
   "ha_temp_friendly_name": "{{sensor_room_name}} Temperatur",