【发布时间】:2016-09-30 16:12:31
【问题描述】:
我正在研究 ESP8266,我正在尝试使用 Lua 进行编程。我试图创建 TCP 服务器,但是当我在下面编写示例代码时,我得到了一个错误消息名称“只允许一个 tcp 服务器”。我创建了一个服务器,但我无法关闭。
我该如何解决?
print("ESP8266 mode is: " .. wifi.getmode());
cfg = {};
-- Set the SSID of the module in AP mode and access password
cfg.ssid = "SSID";
cfg.pwd = "password";
if ssid and password then
print("ESP8266 SSID is: " .. cfg.ssid .. " and PASSWORD is: " ..
cfg.password)
end;
-- Now you should see an SSID wireless router named ESP_STATION when you scan for available WIFI networks
-- Lets connect to the module from a computer of mobile device. So, find the SSID and connect using the password selected
wifi.ap.config(cfg);
ap_mac = wifi.ap.getmac();
-- create a server on port 80 and wait for a connection, when a connection is coming in function c will be executed
sv = net.createServer(net.TCP, 30);
sv:listen(80, function(c)
c:on("receive", function(c, pl)
-- print the payload pl received from the connection
print(pl);
print(string.len(pl));
-- wait until SSID comes back and parse the SSID and the password
print(string.match(pl, "GET"));
ssid_start, ssid_end = string.find(pl, "SSID=");
if ssid_start and ssid_end then
amper1_start, amper1_end = string.find(pl, "&", ssid_end + 1);
if amper1_start and amper1_end then
http_start, http_end = string.find(pl, "HTTP/1.1", ssid_end + 1);
if http_start and http_end then
ssid = string.sub(pl, ssid_end + 1, amper1_start - 1);
password = string.sub(pl, amper1_end + 10, http_start - 2);
print("ESP8266 connecting to SSID: " .. ssid .. " with PASSWORD: " .. password);
if ssid and password then
sv:close();
-- close the server and set the module to STATION mode
wifi.setmode(wifi.STATION);
tmr.stop(2)
print("ESP8266 mode now is: " .. wifi.getmode());
-- configure the module wso it can connect to the network using the received SSID and password
wifi.sta.config(ssid, password);
print("Setting up ESP8266 for station mode…");
print("Please restart your device");
tmr.delay(10000000);
print("Mode is " .. wifi.getmode());
print("Heap:" .. node.heap())
print("");
end;
end;
end;
end;
-- this is the web page that requests the SSID and password from the user
c:send("<!DOCTYPE html> ")
c:send("<html> ")
c:send("<body> ")
c:send("<h1>ESP8266 Wireless control setup</h1>")
mac_mess1 = "The module MAC address is: " .. ap_mac
mac_mess2 = "You will need this MAC address to find the IP address of the module, please take note of it."
c:send("<h2>" .. mac_mess1 .. "</h2>")
c:send("<h2>" .. mac_mess2 .. "</h2>")
c:send("<h2>Enter SSID and Password for your WIFI router</h2>")
c:send("</form> </html>")
c:send("<form action='' method='get'>")
c:send("SSID:")
c:send("<input type='text' name='SSID' value='' maxlength='100'/>")
c:send("<br/>")
c:send("Password:")
c:send("<input type='text' name='Password' value='' maxlength='100'/>")
c:send("<input type='submit' value='Submit' />")
end);
end);
【问题讨论】:
-
在 SO 上针对这两个问题打开两个问题。
-
你的意思是两个不同的新主题下的两个问题吧?
-
是的。由于 SO 是一个问答网站,因此问题是一个“主题”(可能是 BBS 类比)。
-
最后说明:多个连续的
socket:send()调用只能在非常旧的 NodeMCU 固件中正常工作,有一个现成的 NodeMCU 模块用于您正在尝试构建的称为 enduser_setup。