diff options
Diffstat (limited to 'init.lua')
| -rw-r--r-- | init.lua | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..99af736 --- /dev/null +++ b/init.lua @@ -0,0 +1,130 @@ +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("CCS811 " .. chip_id) + +ledpin = 4 +gpio.mode(ledpin, gpio.OUTPUT) +gpio.write(ledpin, 0) + +ccs811 = require("ccs811") +i2c.setup(0, 1, 2, i2c.SLOW) + +function log_restart() + print("Network error " .. wifi.sta.status()) +end + +function setup_client() + print("Connected") + gpio.write(ledpin, 1) + publishing_mqtt = true + mqttclient:publish(mqtt_prefix .. "/state", "online", 0, 1, function(client) + publishing_mqtt = false + hdc1080.setup() + ccs811.start() + push_timer:start() + end) +end + +function connect_mqtt() + print("IP address: " .. wifi.sta.getip()) + print("Connecting to MQTT " .. mqtt_host) + mqttclient:on("connect", 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 push_data() + local t, h = hdc1080.read() + local json_str = string.format('{"temperature_degc": %.1f, "humidity_relpercent": %.1f', t, h) + local influx_str = string.format("temperature_degc=%.1f,humidity_relpercent=%.1f", t, h) + if ccs811.read() then + json_str = json_str .. string.format(', "eco2_ppm": %d, "tvoc_ppb": %d, "status": "0x%02x", "error": "0x%02x"', ccs811.eco2, ccs811.tvoc, ccs811.status, ccs811.err_id) + influx_str = influx_str .. string.format(',eco2_ppm=%d,tvoc_ppb=%d,status=%d,error=%d', ccs811.eco2, ccs811.tvoc, ccs811.status, ccs811.err_id) + ccs811.setEnv(h, t) + else + json_str = json_str .. ', "status": "Initializing", "error": "0x00"' + end + json_str = json_str .. string.format(', "rssi_dbm": %d}', wifi.sta.getrssi()) + if not publishing_mqtt then + publishing_mqtt = true + watchdog:start(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 then + publish_influx(influx_str) + else + gpio.write(ledpin, 1) + collectgarbage() + end + end) + end +end + +function publish_influx(payload) + if not publishing_http then + publishing_http = true + http.post(influx_url, influx_header, "ccs811" .. influx_attr .. " " .. payload, function(code, data) + publishing_http = false + gpio.write(ledpin, 1) + collectgarbage() + end) + end +end + +function hass_register() + local hass_device = string.format('{"connections":[["mac","%s"]],"identifiers":["%s"],"model":"ESP8266 + HDC1080 + CCS811","name":"CCS811 %s","manufacturer":"derf"}', wifi.sta.getmac(), device_id, chip_id) + local hass_entity_base = string.format('"device":%s,"state_topic":"%s/data","expire_after":120', hass_device, mqtt_prefix) + local hass_temp = string.format('{%s,"name":"Temperature","object_id":"%s_temp","unique_id":"%s_temp","device_class":"temperature","unit_of_measurement":"°c","value_template":"{{value_json.temperature_degc}}","entity_category":"diagnostic"}', hass_entity_base, device_id, device_id) + 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}}","entity_category":"diagnostic"}', hass_entity_base, device_id, device_id) + --local hass_eco2 = string.format('{%s,"name":"eCO₂","object_id":"%s_eco2","unique_id":"%s_eco2","device_class":"carbon_dioxide","unit_of_measurement":"ppm","value_template":"{{value_json.eco2_ppm}}"}', hass_entity_base, device_id, device_id) + local hass_voc = string.format('{%s,"name":"VOC","object_id":"%s_voc","unique_id":"%s_voc","unit_of_measurement":"ppb","icon":"mdi:air-filter","value_template":"{{value_json.tvoc_ppb}}"}', hass_entity_base, device_id, device_id) + local hass_status = string.format('{%s,"name":"Status","object_id":"%s_status","unique_id":"%s_status","icon":"mdi:information","value_template":"{{value_json.status}}","entity_category":"diagnostic"}', hass_entity_base, device_id, device_id) + local hass_error = string.format('{%s,"name":"Error","object_id":"%s_error","unique_id":"%s_error","icon":"mdi:alert-circle","value_template":"{{value_json.error}}","entity_category":"diagnostic"}', 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) + + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/temperature/config", hass_temp, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/humidity/config", hass_humi, 0, 1, function(client) + --mqttclient:publish("homeassistant/sensor/" .. device_id .. "/eco2/config", hass_eco2, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/tvoc/config", hass_voc, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/status/config", hass_status, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/error/config", hass_error, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/rssi/config", hass_rssi, 0, 1, function(client) + collectgarbage() + setup_client() + end) + end) + end) + end) + --end) + end) + end) +end + +watchdog:register(180 * 1000, tmr.ALARM_SEMI, node.restart) +push_timer:register(10 * 1000, tmr.ALARM_AUTO, push_data) +watchdog:start() + +connect_wifi() |