Juste fait une petite démo pour corriger un capteur non linéaire au moyen d'une table de conversion, lue au vol dans un fichier .csv sur la flash afin de gagner beaucoup de RAM

2019-04-21 22:33:26 +02:00
parent e52c4cedf0
commit 4376f4b76d
19 changed files with 722 additions and 0 deletions
--- a/No_linear/telnet_srv2.lua
+++ b/No_linear/telnet_srv2.lua
@@ -0,0 +1,87 @@
+-- Serveur telnet pour connexion en remote WIFI, NOUVELLE VERSION !
+-- source: https://github.com/nodemcu/nodemcu-firmware/blob/master/lua_examples/telnet/telnet.lua
+
+print("\n telnet_srv2.lua   zf181215.1326   \n")
+
+local node, table, tmr, wifi, uwrite,     tostring =
+      node, table, tmr, wifi, uart.write, tostring
+
+local function telnet_listener(socket)
+  local insert,       remove,       concat,       heap,      gc   =
+        table.insert, table.remove, table.concat, node.heap, collectgarbage
+  local fifo1, fifo1l, fifo2, fifo2l = {}, 0, {}, 0
+  local s -- s is a copy of the TCP socket if and only if sending is in progress
+  local wdclr, cnt = tmr.wdclr, 0
+  local function debug(fmt, ...)
+    if (...) then fmt = fmt:format(...) end
+    uwrite(0, "\r\nDBG: ",fmt,"\r\n" )
+    cnt = cnt + 1
+    if cnt % 10 then wdclr() end
+  end
+
+  local function flushGarbage()
+    if heap() < 13440 then gc() end
+  end
+
+  local function sendLine()
+     if not s then return end
+
+      if fifo2l + fifo1l == 0 then -- both FIFOs empty, so clear down s
+        s = nil
+        return
+    end
+    flushGarbage()
+    if #fifo2 < 4 then -- Flush FIFO1 into FIFO2
+      insert(fifo2,concat(fifo1))
+      fifo2l, fifo1, fifo1l = fifo2l + fifo1l, {}, 0
+    end
+    local rec =  remove(fifo2,1)        .. (remove(fifo2,1) or '') ..
+                (remove(fifo2,1) or '') .. (remove(fifo2,1) or '')
+    fifo2l = fifo2l - #rec
+    flushGarbage()
+    s:send(rec)
+  end
+
+  local F1_SIZE = 256
+
+  local function queueLine(str)
+    while #str > 0 do  -- this is because str might be longer than the packet size!
+      local k, l = F1_SIZE - fifo1l, #str
+      local chunk
+      if #fifo1 >= 32 or (k < l and k < 16) then
+        insert(fifo2, concat(fifo1))
+        fifo2l, fifo1, fifo1l, k = fifo2l + fifo1l, {}, 0, F1_SIZE
+      end
+      if l > k+16 then -- also tolerate a size overrun of 16 bytes to avoid a split
+        chunk, str = str:sub(1,k), str:sub(k+1)
+      else
+        chunk, str = str, ''
+      end
+      insert(fifo1, chunk)
+      fifo1l = fifo1l + #chunk
+    end
+    if not s and socket then
+      s = socket
+      sendLine()
+    else
+      flushGarbage()
+    end
+  end
+
+  local function receiveLine(s, line)
+    node.input(line)
+  end
+
+  local function disconnect(s)
+    fifo1, fifo1l, fifo2, fifo2l, s = {}, 0, {}, 0, nil
+    node.output(nil)
+  end
+
+  socket:on("receive",       receiveLine)
+  socket:on("disconnection", disconnect)
+  socket:on("sent",          sendLine)
+  node.output(queueLine, 0)
+end
+
+net.createServer(net.TCP, 180):listen(23, telnet_listener)
+print("Telnet server running...\nUsage: telnet -rN ip\n")