diff options
Diffstat (limited to 'init.lua')
| -rw-r--r-- | init.lua | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..3f5813c --- /dev/null +++ b/init.lua @@ -0,0 +1,212 @@ +station_cfg = {} +publishing_mqtt = false +publishing_http = false + +watchdog = tmr.create() +push_timer = tmr.create() +chip_id = string.format("%06X", node.chipid()) +device_id = "esp8266_" .. chip_id +mqtt_prefix = "sensor/" .. device_id +mqttclient = mqtt.Client(device_id, 120) + +dofile("config.lua") + +print("ESP8266 " .. chip_id) + +ledpin = 4 +gpio.mode(ledpin, gpio.OUTPUT) +gpio.write(ledpin, 0) + +sen5x = require("sen5x") +i2c.setup(sen5x.bus_id, 2, 1, i2c.SLOW) + +function log_restart() + print("Network error " .. wifi.sta.status()) +end + +function setup_client() + print("Connected") + gpio.write(ledpin, 1) + if not sen5x.start() then + print("SEN5x initialization error") + end + publishing_mqtt = true + mqttclient:publish(mqtt_prefix .. "/state", "online", 0, 1, function(client) + publishing_mqtt = false + push_timer:start() + prepare_push_data() + end) +end + +function connect_mqtt() + print("IP address: " .. wifi.sta.getip()) + print("Connecting to MQTT " .. mqtt_host) + mqttclient:on("connect", prepare_hass_register) + mqttclient:on("offline", log_restart) + mqttclient:lwt(mqtt_prefix .. "/state", "offline", 0, 1) + mqttclient:connect(mqtt_host) +end + +function connect_wifi() + print("WiFi MAC: " .. wifi.sta.getmac()) + print("Connecting to ESSID " .. station_cfg.ssid) + wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, connect_mqtt) + wifi.eventmon.register(wifi.eventmon.STA_DHCP_TIMEOUT, log_restart) + wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, log_restart) + wifi.setmode(wifi.STATION) + wifi.sta.config(station_cfg) + wifi.sta.connect() +end + +function prepare_push_data() + if sen5x.prepare_read() == false then + print("SEN5x error") + else + local delayed_read_data = tmr.create() + delayed_read_data:register(20, tmr.ALARM_SINGLE, push_data) + delayed_read_data:start() + end +end + +function push_data() + if sen5x.read() == false then + print("SEN5x error") + else + local json_str = "{" + local influx_str = "" + if sen5x.pm1 ~= nil then + json_str = string.format('%s"pm1_ugm3":%d.%01d,', json_str, sen5x.pm1/10, sen5x.pm1%10) + influx_str = string.format("%spm1_ugm3=%d.%01d,", influx_str, sen5x.pm1/10, sen5x.pm1%10) + end + if sen5x.pm2_5 ~= nil then + json_str = string.format('%s"pm2_5_ugm3":%d.%01d,', json_str, sen5x.pm2_5/10, sen5x.pm2_5%10) + influx_str = string.format("%spm2_5_ugm3=%d.%01d,", influx_str, sen5x.pm2_5/10, sen5x.pm2_5%10) + end + if sen5x.pm4 ~= nil then + json_str = string.format('%s"pm4_ugm3":%d.%01d,', json_str, sen5x.pm4/10, sen5x.pm4%10) + influx_str = string.format("%spm4_ugm3=%d.%01d,", influx_str, sen5x.pm4/10, sen5x.pm4%10) + end + if sen5x.pm10 ~= nil then + json_str = string.format('%s"pm10_ugm3":%d.%01d,', json_str, sen5x.pm10/10, sen5x.pm10%10) + influx_str = string.format("%spm10_ugm3=%d.%01d,", influx_str, sen5x.pm10/10, sen5x.pm10%10) + end + if sen5x.humidity ~= nil then + json_str = string.format('%s"humidity_relpercent":%d.%01d,', json_str, sen5x.humidity/100, (sen5x.humidity%100)/10) + influx_str = string.format("%shumidity_relpercent=%d.%01d,", influx_str, sen5x.humidity/100, (sen5x.humidity%100)/10) + end + if sen5x.temperature ~= nil then + json_str = string.format('%s"temperature_celsius":%d.%01d,', json_str, sen5x.temperature/200, (sen5x.temperature%200)/20) + influx_str = string.format("%stemperature_celsius=%d.%01d,", influx_str, sen5x.temperature/200, (sen5x.temperature%200)/20) + end + if sen5x.voc ~= nil then + json_str = string.format('%s"voc":%d.%01d,', json_str, sen5x.voc/10, sen5x.voc%10) + influx_str = string.format("%svoc=%d.%01d,", influx_str, sen5x.voc/10, sen5x.voc%10) + end + if sen5x.nox ~= nil then + json_str = string.format('%s"nox":%d.%01d,', json_str, sen5x.nox/10, sen5x.nox%10) + influx_str = string.format("%snox=%d.%01d,", influx_str, sen5x.nox/10, sen5x.nox%10) + end + json_str = string.format('%s"rssi_dbm":%d}', json_str, wifi.sta.getrssi()) + influx_str = string.format("%srssi_dbm=%d", influx_str, wifi.sta.getrssi()) + + if not publishing_mqtt then + watchdog:start(true) + publishing_mqtt = true + gpio.write(ledpin, 0) + mqttclient:publish(mqtt_prefix .. "/data", json_str, 0, 0, function(client) + publishing_mqtt = false + if influx_url and influx_attr and influx_str then + publish_influx(influx_str) + else + gpio.write(ledpin, 1) + collectgarbage() + end + end) + end + end +end + +function publish_influx(payload) + if not publishing_http then + publishing_http = true + http.post(influx_url, influx_header, "sen5x" .. influx_attr .. " " .. payload, function(code, data) + publishing_http = false + gpio.write(ledpin, 1) + collectgarbage() + end) + end +end + +function prepare_hass_register() + sen5x.prepare_get_product() + local delayed_hass_register = tmr.create() + delayed_hass_register:register(20, tmr.ALARM_SINGLE, hass_register) + delayed_hass_register:start() +end + +function hass_register() + local product_name = sen5x.get_product() + if product_name then + print("Registering " .. product_name) + else + product_name = "SEN5x" + end + + local hass_device = string.format('{"connections":[["mac","%s"]],"identifiers":["%s"],"model":"ESP8266 + %s","name":"%s %s","manufacturer":"derf"}', wifi.sta.getmac(), device_id, product_name, product_name, chip_id) + local hass_entity_base = string.format('"device":%s,"state_topic":"%s/data","expire_after":120', hass_device, mqtt_prefix) + local publish_queue = {} + + local hass_pm1 = string.format('{%s,"name":"PM1.0","object_id":"%s_pm1","unique_id":"%s_pm1","device_class":"pm1","unit_of_measurement":"µg/m³","value_template":"{{value_json.pm1_ugm3}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/pm1/config", hass_pm1}) + + 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) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/pm2_5/config", hass_pm2_5}) + + local hass_pm4 = string.format('{%s,"name":"PM4.0","object_id":"%s_pm4","unique_id":"%s_pm4","device_class":"pm25","unit_of_measurement":"µg/m³","value_template":"{{value_json.pm4_ugm3}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/pm4/config", hass_pm4}) + + local hass_pm10 = string.format('{%s,"name":"PM10","object_id":"%s_pm1*","unique_id":"%s_pm10","device_class":"pm10","unit_of_measurement":"µg/m³","value_template":"{{value_json.pm10_ugm3}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/pm10/config", hass_pm10}) + + if product_name ~= "SEN50" then + local hass_temp = string.format('{%s,"name":"Temperature","object_id":"%s_temperature","unique_id":"%s_temperature","device_class":"temperature","unit_of_measurement":"°c","value_template":"{{value_json.temperature_celsius}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/temperature/config", hass_temp}) + + local hass_humi = string.format('{%s,"name":"Humidity","object_id":"%s_humidity","unique_id":"%s_humidity","device_class":"humidity","unit_of_measurement":"%%","value_template":"{{value_json.humidity_relpercent}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/humidity/config", hass_humi}) + + local hass_voc = string.format('{%s,"name":"VOC","object_id":"%s_voc","unique_id":"%s_voc","device_class":"aqi","value_template":"{{value_json.voc}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/voc/config", hass_voc}) + end + + if product_name == "SEN55" then + local hass_nox = string.format('{%s,"name":"NOx","object_id":"%s_nox","unique_id":"%s_nox","device_class":"nitrous_oxide","value_template":"{{value_json.nox}}"}', hass_entity_base, device_id, device_id) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/nox/config", hass_nox}) + end + + 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) + table.insert(publish_queue, {"homeassistant/sensor/" .. device_id .. "/rssi/config", hass_rssi}) + + hass_mqtt(publish_queue) +end + +function hass_mqtt(queue) + local table_n = table.getn(queue) + if table_n > 0 then + local topic = queue[table_n][1] + local message = queue[table_n][2] + table.remove(queue) + mqttclient:publish(topic, message, 0, 1, function(client) + hass_mqtt(queue) + end) + else + collectgarbage() + setup_client() + end +end + +watchdog:register(90 * 1000, tmr.ALARM_SEMI, node.restart) +push_timer:register(20 * 1000, tmr.ALARM_AUTO, prepare_push_data) +watchdog:start() + +connect_wifi() |