diff options
Diffstat (limited to 'init.lua')
| -rw-r--r-- | init.lua | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/init.lua b/init.lua new file mode 100644 index 0000000..ad447fb --- /dev/null +++ b/init.lua @@ -0,0 +1,117 @@ +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("VEML6075 " .. chip_id) + +ledpin = 4 +gpio.mode(ledpin, gpio.OUTPUT) +gpio.write(ledpin, 0) + +veml6075 = require("veml6075") +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) + if not veml6075.start() then + print("VEML6075 initialization error") + end + publishing_mqtt = true + mqttclient:publish(mqtt_prefix .. "/state", "online", 0, 1, function(client) + publishing_mqtt = false + 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() + if not veml6075.read() then + print("VEML6075 error") + return + end + local json_str = string.format('{"uva_uwcm2":%.1f,"uvb_uwcm2":%.1f,"uv_index":%.0f,"rssi_dbm":%d}', veml6075.uva, veml6075.uvb, (veml6075.uva_i + veml6075.uvb_i)/2, wifi.sta.getrssi()) + local influx_str = string.format('uva_uwcm2=%f,uvb_uwcm2=%f,uv_index=%f', veml6075.uva, veml6075.uvb, (veml6075.uva_i + veml6075.uvb_i)/2) + 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 and influx_str 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, "veml6075" .. 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 + VEML6075","name":"VEML6075 %s","manufacturer":"derf"}', wifi.sta.getmac(), device_id, chip_id) + local hass_entity_base = string.format('"device":%s,"state_topic":"%s/data","expire_after":600', hass_device, mqtt_prefix) + local hass_uva = string.format('{%s,"name":"UVA","object_id":"%s_uva","unique_id":"%s_uva","device_class":"irradiance","unit_of_measurement":"µW/cm²","value_template":"{{value_json.uva_uwcm2}}"}', hass_entity_base, device_id, device_id) + local hass_uvb = string.format('{%s,"name":"UVB","object_id":"%s_uvb","unique_id":"%s_uvb","device_class":"irradiance","unit_of_measurement":"µW/cm²","value_template":"{{value_json.uvb_uwcm2}}"}', hass_entity_base, device_id, device_id) + local hass_uvi = string.format('{%s,"name":"UV Index","object_id":"%s_uvi","unique_id":"%s_uvi","device_class":"irradiance","unit_of_measurement":"counts","value_template":"{{value_json.uv_index}}"}', 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 .. "/uva/config", hass_uva, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/uvb/config", hass_uvb, 0, 1, function(client) + mqttclient:publish("homeassistant/sensor/" .. device_id .. "/uvi/config", hass_uvi, 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 + +watchdog:register(180 * 1000, tmr.ALARM_SEMI, node.restart) +push_timer:register(10 * 1000, tmr.ALARM_AUTO, push_data) +watchdog:start() + +connect_wifi() |