From ba6193ff5b10d350938248c47752ed137f6c6afd Mon Sep 17 00:00:00 2001
From: Ollo <Ollo>
Date: Fri, 21 Feb 2020 20:21:54 +0100
Subject: [PATCH] Telnet included

---
 main.lua   |  9 ++++++---
 telnet.lua | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 3 deletions(-)
 create mode 100644 telnet.lua

diff --git a/main.lua b/main.lua
index 3a03567..8c85f37 100644
--- a/main.lua
+++ b/main.lua
@@ -147,7 +147,7 @@ function normalOperation()
         print('IP: ',wifi.sta.getip())
         -- Here the WLAN is found, and something is done
         print("Solving dependencies")
-        local dependModules = { "timecore" , "wordclock" }
+        local dependModules = { "timecore" , "wordclock", "telnet" }
         for _,mod in pairs(dependModules) do
             print("Loading " .. mod)
             mydofile(mod)
@@ -157,8 +157,11 @@ function normalOperation()
             syncTimeFromInternet()
         end)
         tmr.alarm(3, 2000, 0 ,function()
-            -- FIXME start telent server
-	    print("Load telnet")
+		if (startTelnetServer ~= nil) then
+			startTelnetServer()
+		else
+			print("NO Telent found")
+		end
         end)
         displayTime()
         -- Start the time Thread
diff --git a/telnet.lua b/telnet.lua
new file mode 100644
index 0000000..ab55c21
--- /dev/null
+++ b/telnet.lua
@@ -0,0 +1,35 @@
+-- Telnet Server
+function startTelnetServer()
+    s=net.createServer(net.TCP, 180)
+    s:listen(23,function(c)
+    global_c=c
+    printlines = {}
+    function s_output(str)
+      if(global_c~=nil) then
+        if #printlines > 0 then
+            printlines[ #printlines + 1] = str
+        else
+            printlines[ #printlines + 1] = str
+            global_c:send("\r") -- Send something, so the queue is read after sending
+        end
+      end
+    end
+    node.output(s_output, 0)
+    c:on("receive",function(c,l)
+      node.input(l)
+    end)
+    c:on("disconnection",function(c)
+      node.output(nil)
+      global_c=nil
+    end)
+    c:on("sent", function()        
+        if #printlines > 0 then
+          global_c:send(table.remove(printlines, 1))
+        end
+    end)
+    print("Welcome to the Wordclock.")
+    print("Visite https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en for further commands")
+    end)
+    print("Telnetserver is up")
+end
+