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http_node.lua
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67 lines (64 loc) · 2.2 KB
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gpio.mode(4,gpio.OUTPUT)
gpio.mode(5,gpio.OUTPUT)
function split(s, delimiter)
result = {};
for match in (s..delimiter):gmatch("(.-)"..delimiter) do
table.insert(result, match);
end
return result;
end
function urldecode(payload)
result = {};
list=split(payload,"\r\n")
list=split(list[1]," ")
list=split(list[2],"\/")
table.insert(result, list[1]);
table.insert(result, list[2]);
table.insert(result, list[3]);
return result;
end
function notfound(conn)
conn:send('HTTP/1.1 404 Not Found\r\nConnection: close\r\nCache-Control: private, no-store\r\n\r\n\
<!DOCTYPE HTML>\
<html><head><meta content="text/html;charset=utf-8"><title>ESP8266</title></head>\
<body bgcolor="#ffe4c4"><h2>Page Not Found</h2>\
</body></html>')
end
function sendHeader(conn)
conn:send("HTTP/1.1 200 OK\r\n")
conn:send("Access-Control-Allow-Origin: *\r\n")
conn:send("Content-Type: application/json; charset=utf-8\r\n")
conn:send("Server:NodeMCU\r\n")
conn:send("Connection: close\r\n\r\n")
end
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
conn:on("receive",function(conn,payload)
print("Http Request..\r\n")
--print (payload)
list=urldecode(payload)
if (list[2]=="write") then
local pin = tonumber(list[3])
local status = tonumber(list[4])
gpio.write(pin, status)
sendHeader(conn)
conn:send("{\"result\":\"ok\",\"digitalPin\": "..pin..", \"status\": "..gpio.read(pin).."}")
elseif (list[2]=="toggle") then
local pin = tonumber(list[3])
if (gpio.read(pin) == 1) then
gpio.write(pin, 0)
else
gpio.write(pin,1)
end
sendHeader(conn)
conn:send("{\"result\":\"ok\",\"digitalPin\": "..pin..", \"status\": "..gpio.read(pin).."}")
elseif (list[2]=="read") then
local pin = tonumber(list[3])
sendHeader(conn)
conn:send("{\"result\":\"ok\", \"digitalPins\": [{\"digitalPin\": 4, \"status\": "..gpio.read(4).."},{\"digitalPin\": 5, \"status\": "..gpio.read(5).."}]}")
else
notfound(conn)
end
conn:close()
end)
end)