Unverified Commit 6bff993a authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

Vindriktning: average PM values

parent b8eb235c

esp8266-vindriktning/init.lua

+27 −15
Original line number Diff line number Diff line
@@ -9,7 +9,6 @@ device_id = "esp8266_" .. chip_id 
mqtt_prefix = "sensor/" .. device_id

mqttclient = mqtt.Client(device_id, 120)





print("ESP8266 " .. chip_id)



ledpin = 4
@@ -18,6 +17,8 @@ gpio.write(ledpin, 0) 


pm1006 = require("pm1006")



pm_values = {}



function log_restart()

	print("Network error " .. wifi.sta.status() .. ". Restarting in 30 seconds.")

	delayed_restart:start()
@@ -37,7 +38,6 @@ end 
function connect_mqtt()

	print("IP address: " .. wifi.sta.getip())

	print("Connecting to MQTT " .. mqtt_host)

	delayed_restart:stop()

	mqttclient:on("connect", hass_register)

	mqttclient:on("connfail", log_restart)

	mqttclient:on("offline", log_restart)
@@ -62,7 +62,16 @@ function uart_callback(data) 
		print("Invalid PM1006 frame")

		return

	else

		local json_str = string.format('{"pm25_ugm3": %d, "rssi_dbm": %d}', pm2_5, wifi.sta.getrssi())

		table.insert(pm_values, pm2_5)

		if table.getn(pm_values) == 10 then

			local pm_sum = 0

			for i, pm_value in ipairs(pm_values) do

				pm_sum = pm_sum + pm_value

			end

			local pm_int = pm_sum / 10

			local pm_frac = pm_sum % 10

			local json_str = string.format('{"pm2_5_ugm3": %d.%d, "rssi_dbm": %d}', pm_int, pm_frac, wifi.sta.getrssi())

			pm_values = {}

			if not publishing then

				publishing = true

				gpio.write(ledpin, 0)
@@ -74,12 +83,15 @@ function uart_callback(data) 
			end

		end

	end

end



function hass_register()

	local hass_device = string.format('{"connections":[["mac","%s"]],"identifiers":["%s"],"model":"ESP8266","name":"ESP8266 PM1006","manufacturer":"DIY"}', wifi.sta.getmac(), device_id)

	local hass_entity_base = string.format('"device":%s,"state_topic":"%s/data","expire_after":600', hass_device, mqtt_prefix)

	local hass_pm2_5 = string.format('{%s,"name":"PM2.5","object_id":"%s_pm2_5","unique_id":"%s_pm2_5","icon":"mdi:air-filter","unit_of_measurement":"µg/m³","value_template":"{{value_json.pm2_5_ugm3}}"}', hass_entity_base, device_id, device_id)

	local hass_rssi = string.format('{%s,"name":"RSSI","object_id":"%s_rssi","unique_id":"%s_rssi","icon":"mdi:wifi","unit_of_measurement":"dBm","value_template":"{{value_json.rssi_dbm}}","entity_category":"diagnostic"}', hass_entity_base, device_id, device_id)

	local hass_device = string.format('{"connections":[["mac","%s"]],"identifiers":["%s"],"model":"ESP8266 + PM1006","name":"Vindriktning %s","manufacturer":"derf"}', wifi.sta.getmac(), device_id, chip_id)

	local hass_entity_base = string.format('"device":%s,"state_topic":"%s/data","expire_after":90', hass_device, mqtt_prefix)

	local hass_pm2_5 = string.format('{%s,"name":"PM2.5","object_id":"%s_pm2_5","unique_id":"%s_pm2_5","device_class":"pm25","unit_of_measurement":"µg/m³","value_template":"{{value_json.pm2_5_ugm3}}"}', hass_entity_base, device_id, device_id)

	local hass_rssi = string.format('{%s,"name":"RSSI","object_id":"%s_rssi","unique_id":"%s_rssi","device_class":"signal_strength","unit_of_measurement":"dBm","value_template":"{{value_json.rssi_dbm}}","entity_category":"diagnostic"}', hass_entity_base, device_id, device_id)



	delayed_restart:stop()



	mqttclient:publish("homeassistant/sensor/" .. device_id .. "/pm2_5/config", hass_pm2_5, 0, 1, function(client)

		mqttclient:publish("homeassistant/sensor/" .. device_id .. "/rssi/config", hass_rssi, 0, 1, function(client)