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Load DS18B20 library only, when needed

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Ollo 2021-11-28 12:19:19 +01:00
parent 96b690d90b
commit ffa3bb69de
1 changed files with 23 additions and 16 deletions
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33
mqtt.lua
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@ -65,14 +65,14 @@ function parseBgColor(data, row, per)
end
end
function readTemp()
if (t ~= nil) then
addrs=t.addrs()
function readTemp(ds18b20)
if (ds18b20 ~= nil) then
addrs=ds18b20.addrs()
-- Total DS18B20 numbers
sensors=table.getn(addrs)
local temp1=0
if (sensors >= 1) then
temp1=t.read(addrs[0])
temp1=ds18b20.read(addrs[0])
else
print("No sensor DS18B20 found")
end
@ -92,7 +92,7 @@ function reConnectMqtt()
-- subscribe topic with qos = 0
m:subscribe(mqttPrefix .. "/cmd/#", 0)
local tmr1 = tmr.create()
tmr1:register(1000, tmr.ALARM_SINGLE, function (t)
tmr1:register(1000, tmr.ALARM_SINGLE, function (dummyTemp)
-- publish a message with data = hello, QoS = 0, retain = 0
m:publish(mqttPrefix .. "/ip", tostring(wifi.sta.getip()), 0, 0)
local red = string.byte(colorBg,2)
@ -205,9 +205,7 @@ function startMqttClient()
local dstimer = tmr.create()
dstimer:register(123, tmr.ALARM_SINGLE, function (kTemp)
if (file.open("ds18b20_diet.lc")) then
t=require("ds18b20_diet")
t.setup(2) -- GPIO4
readTemp() -- read once, to setup chip
t=true
print "Setup temperature"
end
end)
@ -215,22 +213,31 @@ function startMqttClient()
local oldBrightness=0
oldTemp=0
local mqtttimer = tmr.create()
mqtttimer:register(5001, tmr.ALARM_AUTO, function (kTemp)
mqtttimer:register(6001, tmr.ALARM_AUTO, function (kTemp)
if (mqttConnected) then
local temperatur = nil
if (t ~= nil) then
temperatur=readTemp()
end
if (oldBrightness ~= briPer) then
m:publish(mqttPrefix .. "/brightness", tostring(briPer), 0, 0)
oldBrightness = briPer
elseif (temperatur ~= nil and temperatur ~= oldTemp) then
else
if (t ~= nil) then
local ds18b20=require("ds18b20_diet")
ds18b20.setup(2) -- GPIO4
readTemp(ds18b20) -- read once, to setup chip
temperatur=readTemp(ds18b20)
if (temperatur == 85) then
temperatur=nil
end
ds18b20=nil
end
if (temperatur ~= nil and temperatur ~= oldTemp) then
oldTemp = temperatur
m:publish(mqttPrefix .. "/temp", tostring(temperatur/100).."."..tostring(temperatur%100), 0, 0)
else
m:publish(mqttPrefix .. "/heap", tostring(node.heap()), 0, 0)
end
end
end
end)
mqtttimer:start()
end