adds first shot add providing 1 wire temps to homeassistant

mqtt/1wire

@@ -0,0 +1,11 @@
+alias_001415daa6ff=Vorlauf
+alias_000802775a88=Ext_1
+alias_0008027777d5=Ext_2
+alias_00000614a13f=Schlafzimmer_1
+alias_00000614a9dd=Schlafzimmer_2
+alias_00042c37a7ff=Wohnzimmer_1
+alias_000802774f41=Wohnzimmer_2
+alias_00042e0076ff=Arbeitszimmer
+alias_000006140045=Bad
+alias_0000061451b3=Küche
+alias_0008027774a6=Esszimmer

mqtt/Makefile

@@ -0,0 +1,5 @@
+systemd:
+	sudo cp ./ds18b20.service /etc/systemd/system
+	sudo cp ./ds18b20.timer /etc/systemd/system
+	sudo systemctl enable ds18b20.timer
+	sudo systemctl start ds18b20.timer

mqtt/ds18b20.service

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+[Unit]
+Description=Read sensor values
+
+[Service]
+Type=oneshot
+User=root
+Group=root
+WorkingDirectory=/root/git/rpi-w1-ds18b20/mqtt
+ExecStart=/root/git/rpi-w1-ds18b20/mqtt/send

mqtt/ds18b20.timer

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+[Unit]
+Description=Periodically update sensor readings
+
+[Timer]
+# Verhindert, dass systemd den Timer minutengenau bündelt
+AccuracySec=1s
+# Wählt eine zufällige Verzögerung im angegebenen Intervall
+RandomizedDelaySec=15s
+
+#OnCalendar=*-*-* 10:45:00
+#OnBootSec=30sec
+#OnUnitActiveSec=30sec
+OnCalendar=*:0/1
+
+
+[Install]
+WantedBy=timers.target

mqtt/mqtt

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+#!/bin/bash
+
+# MQTT configuration attributes
+# https://www.home-assistant.io/integrations/sensor.mqtt/
+# https://www.home-assistant.io/integrations/switch.mqtt/
+
+# Explanation
+# https://www.youtube.com/watch?v=VHiCtZqllU8
+# https://resinchemtech.blogspot.com/2023/12/mqtt-auto-discovery.html
+
+# Prerequesite
+#apt install mosquitto-clients
+
+LC_NAME="${DEVICE_NAME,,}"
+
+# Device attriutes
+DEVICE_ID="${LC_NAME// /_}"
+DEVICE_MANUFACTURER="custom"
+DEVICE_MODEL="${DEVICE_NAME}" #"custom"
+
+# Sensor attributes
+case ${SENSOR_UNIT} in
+    "W"|"mW")
+        SENSOR_ICON="mdi:lightning-bolt"
+	SENSOR_TYPE="power"
+    ;;
+    "V"|"mV")
+        SENSOR_ICON="mdi:sine-wave"
+	SENSOR_TYPE="voltage"
+    ;;
+    "A"|"mA")
+        SENSOR_ICON="mdi:current-dc"
+	SENSOR_TYPE="current"
+    ;;
+    "C")
+        SENSOR_UNIT="°C"
+    ;;&    
+    "°C")
+        SENSOR_ICON="mdi:thermometer"
+	SENSOR_TYPE="temperature"
+    ;;
+    "%")
+        SENSOR_ICON="mdi:water-percent"
+	SENSOR_TYPE="humidity"
+    ;;
+    *)
+        echo "Unknown sensor unit: ${SENSOR_UNIT}" >&2
+        exit 1
+    ;;
+esac
+SENSOR_ID="${DEVICE_ID}_${SENSOR_TYPE}"
+SENSOR_EXPIRE_AFTER_S="600"
+
+# MQTT attributes
+MQTT_CONFIG_TOPIC="homeassistant/sensor/${SENSOR_ID}/config"
+MQTT_STATE_TOPIC="${LC_NAME// //}/${SENSOR_NAME}/state"
+
+
+
+function send {
+    TOPIC=$1
+    PAYLOAD=$2
+    echo "Sending payload to ${MQTT_BROKER}:${MQTT_PORT}/${TOPIC} ..."
+    echo "TOPIC=$TOPIC"
+    echo "PAYLOAD=$PAYLOAD"
+    if [ -n "${MQTT_USERNAME}" ] && [ -n "${MQTT_PASSWORD}" ]; then
+        mosquitto_pub -h "${MQTT_BROKER:=localhost}" -p "${MQTT_PORT:=1883}" -u "${MQTT_USERNAME}" -P "${MQTT_PASSWORD}" \
+            -t "$TOPIC" \
+            -m "$PAYLOAD"
+    else
+        mosquitto_pub -h "${MQTT_BROKER:=localhost}" -p "${MQTT_PORT:=1883}" \
+            -t "$TOPIC" \
+            -m "$PAYLOAD"
+    fi
+}
+
+function config {
+    send "${MQTT_CONFIG_TOPIC}" "$1"
+}
+
+function state {
+    send "${MQTT_STATE_TOPIC}" "$1"
+}
+
+function setupEntity {
+    config "{\
+\"name\": \"${SENSOR_NAME}\",\
+\"unique_id\": \"${SENSOR_ID}\",\
+\"device_class\": \"${SENSOR_TYPE}\",\
+\"unit_of_measurement\": \"${SENSOR_UNIT}\",\
+\"state_topic\": \"${MQTT_STATE_TOPIC}\",\
+\"expire_after\": \"${SENSOR_EXPIRE_AFTER_S}\",\
+\"icon\": \"${SENSOR_ICON}\",\
+\"device\": {\
+\"name\": \"${DEVICE_NAME}\",\
+\"identifiers\": [\"${DEVICE_ID}\"],\
+\"manufacturer\": \"${DEVICE_MANUFACTURER}\",\
+\"model\": \"${DEVICE_MODEL}\"\
+}}"
+
+#\"firendly_name\": \"${NAME} power\",\
+#    "hw_version":"1.02",
+#     "sw_version":"2.45",
+#     "configuration_url":"http://192.168.1.226"
+}
+
+function deleteEntity {
+    config ""
+}
+
+if [ "$1" == "r" ]; then
+    deleteEntity
+    exit 0 
+fi
+
+if [ -n "$1" ]; then
+    setupEntity
+    state "$1"
+    exit 0 
+fi
+
+if [ -z "$1" ]; then
+    setupEntity
+    exit 0
+fi
+
+exit 1

mqtt/send

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+#!/bin/bash
+
+source ./1wire
+
+FILES=$(find -L /sys/bus/w1/devices/ -maxdepth 2 -name temperature)
+
+SENSORS=()
+for f in $FILES
+do
+    s=${f%/*}
+    s=${s##*-}
+    v=$(cat $f)
+    
+    SENSORS+=("${s} ${v}")
+done
+
+for ROW in "${SENSORS[@]}"; do
+    ENTRY=( $ROW )
+    SENSOR=${ENTRY[0]}
+    VALUE=${ENTRY[1]/#[0-9][0-9]/&.}
+
+        # Overrides SENSOR - Example: env.sensor_0_0 Batterie
+        ENV_SENSOR_VAR_NAME="alias_${SENSOR}"
+        ENV_SENSOR_NAME=${!ENV_SENSOR_VAR_NAME}
+
+        if [ -n "${ENV_SENSOR_NAME}" ]; then
+		    echo "${ENV_SENSOR_NAME}.value ${VALUE}"
+        else
+    		    echo "${SENSOR}.value ${VALUE}"
+        fi
+done
+
+
+
+#SENSOR_NAME="voltage" SENSOR_UNIT="mV" DEVICE_NAME="heat-pi ina219" ./mqtt $VOLTAGE
+#SENSOR_NAME="current" SENSOR_UNIT="mA" DEVICE_NAME="heat-pi ina219" ./mqtt $CURRENT
+#SENSOR_NAME="power" SENSOR_UNIT="mW" DEVICE_NAME="heat-pi ina219" ./mqtt $POWER
+