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authorDaniel Friesel <derf@finalrewind.org>2022-05-29 21:02:00 +0200
committerDaniel Friesel <derf@finalrewind.org>2022-05-29 21:02:00 +0200
commit5b2bbf44a723c4b27aa54ddcf8f138eaf7e4daea (patch)
treed625ca6917b2e4f8355856da99272e891814fbbf
parent87d61960d7c15084aebffe28b1dea87dc7b716c8 (diff)
example application: add InfluxDB support
-rw-r--r--init.lua52
1 files changed, 35 insertions, 17 deletions
diff --git a/init.lua b/init.lua
index 8904f95..dad4019 100644
--- a/init.lua
+++ b/init.lua
@@ -1,13 +1,15 @@
station_cfg = {}
-dofile("config.lua")
+publishing_mqtt = false
+publishing_http = false
-delayed_restart = tmr.create()
+watchdog = tmr.create()
push_timer = tmr.create()
-chip_id = node.chipid()
+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)
@@ -19,8 +21,7 @@ scd4x = require("scd4x")
i2c.setup(0, 2, 1, i2c.SLOW)
function log_restart()
- print("Network error " .. wifi.sta.status() .. ". Restarting in 20 seconds.")
- delayed_restart:start()
+ print("Network error " .. wifi.sta.status())
end
function setup_client()
@@ -29,9 +30,10 @@ function setup_client()
if not scd4x.start() then
print("SCD4x initialization error")
end
- publishing = true
+ publishing_mqtt = true
mqttclient:publish(mqtt_prefix .. "/state", "online", 0, 1, function(client)
- publishing = false
+ publishing_mqtt = false
+ push_timer:start()
push_data()
end)
end
@@ -39,7 +41,6 @@ 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("offline", log_restart)
mqttclient:lwt(mqtt_prefix .. "/state", "offline", 0, 1)
@@ -63,21 +64,37 @@ function push_data()
print("SCD4x error")
else
local json_str = string.format('{"co2_ppm": %d, "temperature_degc": %d.%d, "humidity_relpercent": %d.%d, "rssi_dbm": %d}', co2, raw_temp/65536 - 45, (raw_temp%65536)/6554, raw_humi/65536, (raw_humi%65536)/6554, wifi.sta.getrssi())
- if not publishing then
- publishing = true
+ local influx_str = string.format("co2_ppm=%d,temperature_degc=%d.%d,humidity_relpercent=%d.%d", co2, raw_temp/65536 - 45, (raw_temp%65536)/6554, raw_humi/65536, (raw_humi%65536)/6554)
+ 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 = false
- gpio.write(ledpin, 1)
- collectgarbage()
+ 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
- push_timer:start()
+end
+
+function publish_influx(payload)
+ if not publishing_http then
+ publishing_http = true
+ http.post(influx_url, influx_header, "scd4x" .. 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","name":"ESP8266 with SCD4x","manufacturer":"DIY"}', wifi.sta.getmac(), device_id)
+ local hass_device = string.format('{"connections":[["mac","%s"]],"identifiers":["%s"],"model":"ESP8266 + SCD4x","name":"SCD4x %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_co2 = string.format('{%s,"name":"CO₂","object_id":"%s_co2","unique_id":"%s_co2","device_class":"carbon_dioxide","unit_of_measurement":"ppm","value_template":"{{value_json.co2_ppm}}"}', hass_entity_base, device_id, device_id)
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_degc}}"}', hass_entity_base, device_id, device_id)
@@ -96,7 +113,8 @@ function hass_register()
end)
end
-delayed_restart:register(20 * 1000, tmr.ALARM_SINGLE, node.restart)
-push_timer:register(20 * 1000, tmr.ALARM_SEMI, push_data)
+watchdog:register(180 * 1000, tmr.ALARM_SEMI, node.restart)
+push_timer:register(20 * 1000, tmr.ALARM_AUTO, push_data)
+watchdog:start()
connect_wifi()