52 lines
1.6 KiB
Lua
52 lines
1.6 KiB
Lua
-- MQTT extension
|
|
function startMqtt()
|
|
m = mqtt.Client("wordclock", 120)
|
|
-- on publish message receive event
|
|
m:on("message", function(client, topic, data)
|
|
print(topic .. ":" )
|
|
if data ~= nil then
|
|
print(data)
|
|
if (data == "ON") then
|
|
briPercent=100
|
|
m:publish(mqttPrefix .. "/clock", "ON", 0, 0)
|
|
elseif (data == "OFF") then
|
|
briPercent=0
|
|
m:publish(mqttPrefix .. "/clock", "OFF", 0, 0)
|
|
else
|
|
if (tonumber(data) >= 0 and tonumber(data) <= 100) then
|
|
briPercent=tonumber(data)
|
|
m:publish(mqttPrefix .. "/clock", tostring(data), 0, 0)
|
|
end
|
|
end
|
|
end
|
|
end)
|
|
|
|
m:connect(mqttServer, 1883, 0, function(client)
|
|
print("MQTT is connected")
|
|
mqttConnected = true
|
|
-- subscribe topic with qos = 0
|
|
client:subscribe(mqttPrefix .. "/command", 0)
|
|
-- publish a message with data = hello, QoS = 0, retain = 0
|
|
client:publish(mqttPrefix .. "/ip", tostring(wifi.sta.getip()), 0, 0)
|
|
end,
|
|
function(client, reason)
|
|
print("failed reason: " .. reason)
|
|
end)
|
|
end
|
|
|
|
function startMqttClient()
|
|
if (mqttServer ~= nil and mqttPrefix ~= nil) then
|
|
startMqtt()
|
|
print "Started MQTT client"
|
|
oldBrightness=0
|
|
tmr.alarm(5, 5001, 1 ,function()
|
|
if (oldBrightness ~= briPercent) then
|
|
m:publish(mqttPrefix .. "/brightness", tostring(briPercent), 0, 0)
|
|
else
|
|
m:publish(mqttPrefix .. "/heap", tostring(node.heap()), 0, 0)
|
|
end
|
|
oldBrightness = briPercent
|
|
end)
|
|
end
|
|
end
|