yea

lua/.nodemcutool

@@ -0,0 +1,7 @@
+{
+    "baudrate": "115200",
+    "port": "/dev/ttyUSB0",
+    "minify": false,
+    "compile": false,
+    "keeppath": false
+}

lua/8-mosfet.lua

@@ -0,0 +1,59 @@
+sda = 23 -- pins as on Adafruit Huzzah32 silkscreen
+scl = 22
+id = i2c.HW0 -- hardware interface
+speed = i2c.SLOW
+
+-- values for TCA9534A
+i2c_addr = 0x3F
+
+-- initialize i2c software interface
+i2c.setup(id, sda, scl, speed)
+
+port_input = 0x00
+port_output = 0x01
+reg_polarity = 0x02
+reg_config = 0x03
+
+function write_reg(addr, reg, data, callback)
+   i2c.start(id)
+   i2c.address(id, dev_address, i2c.TRANSMITTER)
+   i2c.write(id, reg, data, true)
+   i2c.stop(id)
+   return i2c.transfer(id, callback, 5000)
+end
+
+function read_reg(dev_address, dev_register, callback)
+  i2c.start(id)
+  i2c.address(id, dev_address, i2c.TRANSMITTER)
+  i2c.write(id, dev_register)
+  i2c.start(id) -- repeated start condition
+  i2c.address(id, dev_address, i2c.RECEIVER)
+  i2c.read(id, 1)
+  i2c.stop(id)
+  return i2c.transfer(id, callback, 5000)
+end
+
+write_reg(i2c_addr, reg_config, 0x00, function(_,_) print("8-mosfet: reg_config done") end)
+
+function set_mosfet(value)
+   write_reg(i2c_addr, reg_config, value, function(_,a)
+		print("set mosfet")
+   end)
+end
+
+mosfet_value = 0xFF
+function publish_status(value)
+   mosfet_value = read_reg(i2c_addr, reg_output)
+   for i = 0,8 do
+      oskar_m:publish("/shannon/kontrol/relay/"..i, bit.band(bit.rshift(mosfet_value, i), 0x1), 0, 0)
+   end
+end
+
+oskar_topichandle["/shannon/kontrol/relay"] = function (client, topic, data)
+   n = tonumber(string.sub(topic, -1))
+   if n<8 and n>=0 then
+      if data then mosfet_value = bit.band(mosfet_value, bit.lshift(1, n))
+      else mosfet_value = bit.bor(mosfet_value, bit.bnot(bit.lshift(1, n))) end
+      set_mosfet(mosfet_value)
+   end
+end

lua/Makefile

@@ -1,2 +1,5 @@
 upload: init.lua
 	luatool.py --ip 192.168.1.174:2323 -vd -f init.lua
+
+check: *.lua
+	./../nodemcu-firmware-esp32/build/luac_cross/luac.cross -p $? && touch $@

lua/init.lua

@@ -7,6 +7,8 @@ end
 
 tryfile('display.lua')
 tryfile('wifi.lua')
+tryfile('kontrol.lua')
+
 
 function reload() tryfile('init.lua') end
 function ls() for k,v in pairs(file.list()) do print(k.."\t\tsize: "..v) end end

lua/kontrol.lua

@@ -0,0 +1,10 @@
+
+
+
+mqtt = tryfile("mqtt.lua")
+fet8 = tryfile("8-mosfet.lua")
+
+mqtt:publish("/shannon/kontrol/status", "hello", 0, 0, function(client) print("sent hello") end)
+
+
+

lua/mqtt.lua

@@ -1,29 +1,96 @@
+-- mqtt.lua
+local M = {} -- public interface
+
+function M:on_connect(client, topic, message)
+   self.connected = true
+end
+
+function M:on_offline(client, topic, message)
+   self.connected = false
+end
+
+function M:on_message(client, topic, message)
+end
+
+function M:on_newconnection()
+end
+
+function M:subscribe(topic, qos)
+   self.subscriptions[topic] = qos
+   self.attempt_subscribes()
+end
+
+function attmpet_subscribes()
+   
+   local uv_topic, uv_qos = next(self.subscriptions, nil) -- more upvals
    
 
-m = mqtt.Client(hostname, 120)
+  local function subscribe_cb(client)
+    print("subscribed to topic", uv_topic)
+    uv_topic, uv_qos = next(uv_topics, uv_topic)
+    if uv_topic ~= nil and uv_qos ~= nil then
+      client:subscribe(uv_topic, uv_qos, subscribe_cb)
+    else
+      uv_cb(client)
+    end
+  end
 
-m:lwt("/lwt", "offline", 0, 0)
-
-m:on("connect", function(client) print ("connected") end)
-m:on("offline", function(client) print ("offline") end)
+  client:subscribe(uv_topic, uv_qos, subscribe_cb)
+end
 
 
-m:on("message", function(client, topic, data) 
+function M:connect(host, port)
+   self.m:connect(host, port, 0,
+		  function(client)
+		     self.connected = true
+		     self.on_newconnection()
+		  end,
+		  function(client, reason)
+		     print("mqtt "..name.." failed to connect: "..reason)
+		     tmr.create():alarm(10*1000, tmr.ALARM_SINGLE, self.connect(host, port))
+		  end
+   )
+end
+
+setmetatable(
+   M, { __call = function (cls, name)
+	   local self = setmetatable({}, MyClass)
+	   self.m = mqtt.Client(name, 120)
+	   self.name = name
+	   self.connected = false
+	   self.m:on("connect", M.on_connect)
+	   self.m:on("offline", M.on_offline)
+	   self.m:on("message", M.on_message)
+	   return self
+   end,
+})
+
+oskar_m:lwt("/lwt", "offline", 0, 0)
+oskar_m:on("connect", function(client) print ("connected") end)
+oskar_m:on("offline", function(client) print ("offline") end)
+oskar_topicsub = {
+   
+}
+oskar_topichandle = {
+   status=(function (client, topic, message)
+	 print("Handle status") end),
+}
+oskar_m:on("message", function(client, topic, data) 
   print("MQTT: msg recieved: "..topic) 
   if data ~= nil then
     print(data)
   end
+  oskar_topichandle[topic](client,topic,message)
 end)
 
 -- for TLS: m:connect("192.168.11.118", secure-port, 1)
-m:connect("departmentofinter.net", 1883, 0, function(client)
+oskar_m:connect("172.105.7.171", 1883, 0, function(client)
   print("connected")
   -- Calling subscribe/publish only makes sense once the connection
   -- was successfully established. You can do that either here in the
   -- 'connect' callback or you need to otherwise make sure the
   -- connection was established (e.g. tracking connection status or in
   -- m:on("connect", function)).
-
   -- subscribe topic with qos = 0
   client:subscribe("/topic", 0, function(client) print("subscribe success") end)
   -- publish a message with data = hello, QoS = 0, retain = 0
@@ -33,5 +100,9 @@ function(client, reason)
   print("failed reason: " .. reason)
 end)
 
-m:close();
--- you can call m:connect again
+
+
+
+
+
+return M