222 lines
6.9 KiB
Lua
222 lines
6.9 KiB
Lua
-- Global variable
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local m=nil
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local mqttConnected = false
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-- Temp:
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local t=nil
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dispTemp=nil
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function handleSingleCommand(client, topic, data)
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if (data == "ON") then
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briPer=100
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m:publish(mqttPrefix .. "/clock", "ON", 0, 0)
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elseif (data == "OFF") then
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briPer=0
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m:publish(mqttPrefix .. "/clock", "OFF", 0, 0)
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elseif ((data:sub(1,1) == "#" and data:len() == 7) or (string.match(data, "%d+,%d+,%d+"))) then
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local red=0
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local green=0
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local blue=0
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if (data:sub(1,1) == "#") then
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red = tonumber(data:sub(2,3), 16)
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green = tonumber(data:sub(4,5), 16)
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blue = tonumber(data:sub(6,7), 16)
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else
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red, green, blue = string.match(data, "(%d+),(%d+),(%d+)")
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end
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colorBg=string.char(green * briPer / 100, red * briPer / 100, blue * briPer / 100)
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print("Updated BG: " .. tostring(red) .. "," .. tostring(green) .. "," .. tostring(blue) )
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m:publish(mqttPrefix .. "/background", tostring(red) .. "," .. tostring(green) .. "," .. tostring(blue), 0, 0)
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else
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if (tonumber(data) >= 0 and tonumber(data) <= 100) then
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briPer=tonumber(data)
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m:publish(mqttPrefix .. "/clock", tostring(data), 0, 0)
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else
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print "Unknown MQTT command"
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end
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end
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end
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-- Parse MQTT data and extract color
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-- @param data MQTT information
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-- @param row string of the row e.g. "row1" used to publish current state
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-- @param per percent the color should be dimmed
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function parseBgColor(data, row, per)
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local red=nil
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local green=nil
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local blue=nil
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if (data:sub(1,1) == "#") then
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red = tonumber(data:sub(2,3), 16)
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green = tonumber(data:sub(4,5), 16)
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blue = tonumber(data:sub(6,7), 16)
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else
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red, green, blue = string.match(data, "(%d+),(%d+),(%d+)")
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end
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if ((red ~= nil) and (green ~= nil) and (blue ~= nil) ) then
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m:publish(mqttPrefix .. "/"..row, tostring(red) .. "," .. tostring(green) .. "," .. tostring(blue), 0, 0)
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if (per ~= nil) then
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return string.char(green * per / 100, red * per / 100, blue * per / 100)
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else
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return string.char(green , red , blue )
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end
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else
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return nil
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end
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end
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function readTemp()
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if (t ~= nil) then
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addrs=t.addrs()
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-- Total DS18B20 numbers
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sensors=table.getn(addrs)
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local temp1=0
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if (sensors >= 1) then
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temp1=t.read(addrs[0])
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end
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return temp1
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else
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return nil
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end
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end
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-- Connect or reconnect to mqtt server
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function reConnectMqtt()
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if (not mqttConnected) then
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m:connect(mqttServer, 1883, false, function(c)
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print("MQTT is connected")
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mqttConnected = true
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-- subscribe topic with qos = 0
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m:subscribe(mqttPrefix .. "/cmd/#", 0)
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local tmr1 = tmr.create()
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tmr1:register(1000, tmr.ALARM_SINGLE, function (t)
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-- publish a message with data = hello, QoS = 0, retain = 0
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m:publish(mqttPrefix .. "/ip", tostring(wifi.sta.getip()), 0, 0)
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local red = string.byte(colorBg,2)
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local green = string.byte(colorBg,1)
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local blue = string.byte(colorBg,3)
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m:publish(mqttPrefix .. "/background", tostring(red) .. "," .. tostring(green) .. "," .. tostring(blue), 0, 0)
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tmr1:unregister()
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end)
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tmr1:start()
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end,
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function(client, reason)
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print("failed reason: " .. reason)
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mqttConnected = false
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end)
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end
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end
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-- MQTT extension
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function registerMqtt()
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m = mqtt.Client("wordclock", 120)
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-- on publish message receive event
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m:on("message", function(client, topic, data)
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print("MQTT " .. topic .. ":" )
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if data ~= nil then
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print(data)
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if (topic == (mqttPrefix .. "/cmd/single")) then
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handleSingleCommand(client, topic, data)
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elseif (topic == (mqttPrefix .. "/cmd/temp")) then
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if ( data == "" ) then
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dispTemp = nil
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else
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dispTemp = tonumber(data)
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end
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else
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-- Handle here the /cmd/# sublevel
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if (string.match(topic, "telnet$")) then
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client:publish(mqttPrefix .. "/telnet", tostring(wifi.sta.getip()), 0, 0)
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ws2812.write(string.char(0,0,0):rep(114))
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print("Stop Mqtt and Temp")
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m=nil
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t=nil
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mqttConnected = false
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if (mlt ~= nil) then
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mlt:unregister()
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else
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print("main loop unstoppable")
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end
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collectgarbage()
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mydofile("telnet")
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if (startTelnetServer ~= nil) then
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startTelnetServer()
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else
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print("Cannost start Telnet Server!")
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end
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elseif (string.match(topic, "color$")) then
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color = parseBgColor(data, "color")
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print("Updated color" )
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elseif (string.match(topic, "color1$")) then
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color1 = parseBgColor(data, "color1")
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print("Updated color1" )
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elseif (string.match(topic, "color2$")) then
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color2 = parseBgColor(data, "color2")
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print("Updated color2" )
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elseif (string.match(topic, "color3$")) then
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color3 = parseBgColor(data, "color3")
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print("Updated color3" )
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elseif (string.match(topic, "color4$")) then
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color4 = parseBgColor(data, "color4")
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print("Updated color4" )
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else
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for i=1,10,1 do
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if (string.match(topic, "row".. tostring(i) .."$")) then
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rowbgColor[i] = parseBgColor(data, "row" .. tostring(i), briPer)
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print("Updated row" .. tostring(i) )
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return
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end
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end
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end
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end
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end
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end)
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m:on("offline", function(client)
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print("MQTT Disconnected")
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mqttConnected = false
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end
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)
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reConnectMqtt()
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end
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function connectedMqtt()
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return mqttConnected
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end
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function startMqttClient()
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if (mqttServer ~= nil and mqttPrefix ~= nil) then
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registerMqtt()
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print "Started MQTT client"
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local dstimer = tmr.create()
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dstimer:register(123, tmr.ALARM_SINGLE, function (t)
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if (file.open("ds18b20_diet.lc")) then
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t=require("ds18b20_diet")
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t.setup(2) -- GPIO4
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readTemp() -- read once, to setup chip
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print "Setup temperature"
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end
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end)
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local oldBrightness=0
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oldTemp=0
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local mqtttimer = tmr.create()
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mqtttimer:register(5001, tmr.ALARM_AUTO, function (t)
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if (mqttConnected) then
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local temp = nil
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if (t ~= nil) then
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temp=readTemp()
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end
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if (oldBrightness ~= briPer) then
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m:publish(mqttPrefix .. "/brightness", tostring(briPer), 0, 0)
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elseif (temp ~= nil and temp ~= oldTemp) then
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oldTemp = temp
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m:publish(mqttPrefix .. "/temp", tostring(temp/100).."."..tostring(temp%100), 0, 0)
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else
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m:publish(mqttPrefix .. "/heap", tostring(node.heap()), 0, 0)
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end
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oldBrightness = briPer
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end
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end)
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mqtttimer:start()
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end
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end
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