e5f140f0c1
* Ajouté le dossier zpackage contenant tout ce qu'il faut pour bien débuter un nouveau projet NodeMCU * Ajouté un dossier, générateur de signaux pour le workshop sur l'oscilloscope * Rangé le dossier genefunc * Ajouté le dossier AD9833 pour commencer à travailler avec le module générateur de fonction AD9833
88 lines
2.6 KiB
Lua
88 lines
2.6 KiB
Lua
-- 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")
|