Initial commit

2021-04-29 09:11:56 -05:00 · 2021-04-29 09:11:56 -05:00 · fb27e85eae
commit fb27e85eae
10 changed files with 718 additions and 0 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,2 @@
+[*.py]
+insert_final_newline = true
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,3 @@
+/.venv
+.mpyp_cache/
+/dist/
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@ -0,0 +1,3 @@
+{
+    "python.pythonPath": ".venv/bin/python3.9"
+}
--- a/README.md
+++ b/README.md
@ -0,0 +1,42 @@
+# Thermostat Display
+
+## Screen Setup
+
+As instructed at https://www.acmesystems.it/CM3-PANEL-7-BASIC_microsd
+
+1. Device Tree Overlay (`config.txt`)
+2. Enable SSH: `thouch /run/media/boot/ssh`
+3. Configure *wpa_supplicant*
+
+
+## Build/Install
+
+1. Build wheel: `poetry build`
+2. Copy wheel to Raspberry Pi
+3. Install: `python3 -m pip install --user ~/thermostat-*.whl`
+4. Copy `sensor.service` to `~/.config/systemd/user`
+5. Start sensor: `systemctl --user enable --now sensor`
+
+
+## Automatic Login/Autostart
+
+1. Install packages:
+
+   * firefox-esr
+   * matchbox-window-manager
+   * x11-xserver-utils
+   * xdotool
+   * xinit
+
+2. Copy `xinit@.service` to `/etc/systemd/system`
+3. Copy `xinit.sh` to `~/.xinitrc`
+4. Start GUI:
+
+   ```
+   systemctl enable xinit@pi.service
+   systemctl set-default graphical.target
+   systemctl isolate graphical.target
+   ```
+5. Install [Auto Fullscreen][1] add-on fore Firefox
+
+[1]: https://addons.mozilla.org/en-US/firefox/addon/autofullscreen/
--- a/poetry.lock
+++ b/poetry.lock
@ -0,0 +1,485 @@
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+    {file = "typing_extensions-3.7.4.3-py3-none-any.whl", hash = "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918"},
+    {file = "typing_extensions-3.7.4.3.tar.gz", hash = "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c"},
+]
+wrapt = [
+    {file = "wrapt-1.12.1.tar.gz", hash = "sha256:b62ffa81fb85f4332a4f609cab4ac40709470da05643a082ec1eb88e6d9b97d7"},
+]
+zipp = [
+    {file = "zipp-3.4.1-py3-none-any.whl", hash = "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"},
+    {file = "zipp-3.4.1.tar.gz", hash = "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76"},
+]
--- a/pyproject.toml
+++ b/pyproject.toml
@ -0,0 +1,29 @@
+[tool.poetry]
+name = "thermostat"
+version = "0.1.0"
+description = ""
+authors = ["Dustin C. Hatch <dustin@hatch.name>"]
+
+[tool.poetry.dependencies]
+python = "^3.7"
+smbus2 = "^0.4.1"
+"RPi.bme280" = "^0.2.3"
+paho-mqtt = "^1.5.1"
+
+[tool.poetry.dev-dependencies]
+black = "^21.4b2"
+flake8 = "^3.9.1"
+pylint = "^2.8.2"
+mypy = "^0.812"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.black]
+line-length = 79
+
+[tool.isort]
+profile = "black"
+multi_line_output = 3
+lines_after_imports = 2
--- a/sensor.service
+++ b/sensor.service
@ -0,0 +1,10 @@
+[Unit]
+Description=Thermostat Sensor
+
+[Service]
+EnvironmentFile=-%E/thermostat/sensor
+ExecStart=/usr/bin/python3 -m thermostat.sensor
+Restart=always
+
+[Install]
+WantedBy=default.target
--- a/src/thermostat/sensor.py
+++ b/src/thermostat/sensor.py
@ -0,0 +1,123 @@
+import json
+import logging
+import os
+import signal
+import time
+from contextlib import closing
+from types import FrameType
+from typing import Any, Dict
+
+import bme280
+import smbus2
+from paho.mqtt import client as mqtt
+
+
+log = logging.getLogger("sensor")
+
+
+HOST = "homeassistant.pyrocufflink.blue"
+PORT = 8883
+USERNAME = os.environ.get("MQTT_USERNAME", "")
+PASSWORD = os.environ.get("MQTT_PASSWORD", "")
+TOPIC = "homeassistant/sensor/thermostat"
+
+I2CPORT = 1
+SENSOR_ADDR = 0x77
+
+
+SENSOR_CONFIG = {
+    "thermostat_temperature": {
+        "device_class": "temperature",
+        "name": "Thermostat Temperature",
+        "state_topic": TOPIC,
+        "unit_of_measurement": "°C",
+        "value_template": r"{{ value_json.temperature }}",
+    },
+    "thermostat_pressure": {
+        "device_class": "pressure",
+        "name": "Thermostat Pressure",
+        "state_topic": TOPIC,
+        "unit_of_measurement": "hPa",
+        "value_template": r"{{ value_json.pressure }}",
+    },
+    "thermostat_humidity": {
+        "device_class": "humidity",
+        "name": "Thermostat Humidity",
+        "state_topic": TOPIC,
+        "unit_of_measurement": "%",
+        "value_template": r"{{ value_json.humidity }}",
+    },
+}
+
+
+class Daemon:
+    def __init__(self) -> None:
+        self.running = True
+
+    def on_signal(self, signum: int, frame: FrameType) -> None:
+        log.debug("Got signal %d at %s", signum, frame)
+        log.info("Stopping")
+        self.running = False
+
+    def run(self):
+        signal.signal(signal.SIGINT, self.on_signal)
+        signal.signal(signal.SIGTERM, self.on_signal)
+
+        client = mqtt.Client()
+        client.on_connect = self.on_connect
+        client.on_message = self.on_message
+        client.on_disconnect = self.on_disconnect
+        if USERNAME or PASSWORD:
+            client.username_pw_set(USERNAME, PASSWORD)
+        client.connect_async(HOST, PORT)
+        client.loop_start()
+        with closing(smbus2.SMBus(I2CPORT)) as bus:
+            params = bme280.load_calibration_params(bus, SENSOR_ADDR)
+            while self.running:
+                data = bme280.sample(bus, SENSOR_ADDR, params)
+                values = {
+                    "temperature": int(data.temperature),
+                    "pressure": int(data.pressure),
+                    "humidity": int(data.humidity),
+                }
+                client.publish(TOPIC, json.dumps(values))
+                time.sleep(10)
+        client.disconnect()
+        client.loop_stop()
+
+    def on_connect(
+        self,
+        client: mqtt.Client,
+        userdata: None,
+        flags: Dict[str, Any],
+        rc: int,
+    ):
+        log.info("Successfully connected to MQTT broker")
+        for key, value in SENSOR_CONFIG.items():
+            client.publish(
+                f"homeassistant/sensor/{key}/config", json.dumps(value)
+            )
+
+    def on_disconnect(self, client, userdata, rc):
+        log.error("Lost connection to MQTT broker")
+        while 1:
+            try:
+                client.reconnect()
+            except Exception as e:
+                log.error("Failed to reconnect: %s", e)
+                time.sleep(1)
+            else:
+                break
+
+    def on_message(self, client, userdata, msg):
+        print("Message", client, userdata, msg)
+
+
+def main():
+    logging.basicConfig(level=logging.DEBUG)
+    daemon = Daemon()
+    daemon.run()
+
+
+if __name__ == "__main__":
+    main()
--- a/xinit@.service
+++ b/xinit@.service
@ -0,0 +1,16 @@
+[Unit]
+Description=Start X.org for user %I
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+User=%I
+WorkingDirectory=~
+TTYPath=/dev/tty7
+StandardInput=tty
+ExecStart=/usr/bin/startx
+Restart=always
+
+[Install]
+WantedBy=graphical.target
--- a/xinitrc.sh
+++ b/xinitrc.sh
@ -0,0 +1,5 @@
+#!/bin/sh
+
+xset s 30
+( while :; do firefox; done ) &
+exec matchbox-window-manager -use_titlebar no