一些时间去准备朋友的元器件了...
接着写,,争取今天写完所有的文章,,因为答应了朋友下周5之前要做好朋友的东西
对于TCP大家在玩AT指令的时候有没有发现客户端最多连接5个,,,再连接就不行了??
所以在用AT指令开发的时候单片机程序一定要记得清除多余的连接
现在看用LUA语言怎么做
直接先上菜
Init.lua
gpio.mode(4,gpio.OUTPUT)
gpio.mode(2,gpio.OUTPUT)
gpio.write(4,1)
tmr.alarm(0, 1000, 1, function()
gpio.write(4,1-gpio.read(4))
end)
tmr.alarm(1, 1000, 0, function()
dofile("wifi.lua")
end)
wifi.lua
wifi.setmode(wifi.STATIONAP)
cfg={}
cfg.ssid="Hellow8266"
cfg.pwd="11223344"
wifi.ap.config(cfg)
apcfg={}
apcfg.ssid="qqqqq"
apcfg.pwd="11223344"
wifi.sta.config(apcfg)
wifi.sta.connect()
TCPSever=net.createServer(net.TCP,28800)
TcpConnectCnt = 0
TcpSocketTable={}
TCPSever:listen(8080,function(socket)
if TcpConnectCnt == 4 then
if TcpSocketTable[0] ~= nil then
TcpSocketTable[0]:close()
TcpSocketTable[0] = nil
end
else
if TcpSocketTable[TcpConnectCnt+1] ~= nil then
TcpSocketTable[TcpConnectCnt+1]:close()
TcpSocketTable[TcpConnectCnt+1] = nil
end
end
TcpSocketTable[TcpConnectCnt] = socket
print(TcpConnectCnt.."-Connect")
TcpConnectCnt = TcpConnectCnt + 1
if TcpConnectCnt == 5 then
TcpConnectCnt = 0
end
socket:on("receive",function(socket,data)
uart.write(0,data)
end)
socket:on("disconnection",function(sck,c)
for i=0,4 do
if TcpSocketTable[i] == sck then
TcpSocketTable[i] = nil
print(i.."-Disconnect")
end
end
end)
end)
uart.on("data",0,function(data)
for i=0,5 do
if TcpSocketTable[i] ~= nil then
TcpSocketTable[i]:send(data)
end
end
end, 0)
printip = 0
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("+IP"..T.IP)
end
printip = 1
end)
下面看解释.............
wifi.setmode(wifi.STATIONAP)--模式AP+STATION就不说了
cfg={}
cfg.ssid="Hellow8266"
cfg.pwd="11223344"
wifi.ap.config(cfg)--设置模块的无线和密码
apcfg={}
apcfg.ssid="qqqqq"
apcfg.pwd="11223344"
wifi.sta.config(apcfg)--设置模块连接路由器的无线和密码
--wifi.sta.connect()连接路由器,断开后可能就不自动连接了,可以用下面的
wifi.sta.autoconnect(1)可以用这个断开后自动连接路由器
TCPSever=net.createServer(net.TCP,28800) --创建服务器超过28800S不通信断开已有的连接
TcpConnectCnt = 0--连接个数计数
TcpSocketTable={}--存储socket
TCPSever:listen(8080,function(socket)
如果0号连接就把1号关掉,,,1号连接就把2号关掉....4号连接就把0号关掉,这样子循环,
当然您会问可以连接5个,,这样子只可以连接四个了,,,为什么....因为如果连接了5个就进不
来这个监听函数了.......所以必须留下一个空位
if TcpConnectCnt == 4 then
if TcpSocketTable[0] ~= nil then
TcpSocketTable[0]:close()
TcpSocketTable[0] = nil
end
else
if TcpSocketTable[TcpConnectCnt+1] ~= nil then
TcpSocketTable[TcpConnectCnt+1]:close()
TcpSocketTable[TcpConnectCnt+1] = nil
end
end
TcpSocketTable[TcpConnectCnt] = socket--把连接的socket存到数组
print(TcpConnectCnt.."-Connect")--打印几号连接了 对了 .. 是连接符
TcpConnectCnt = TcpConnectCnt + 1--连接个数加一
if TcpConnectCnt == 5 then --归零
TcpConnectCnt = 0
end
socket:on("receive",function(socket,data)
uart.write(0,data) --把接收到的数据发到串口
end)
socket:on("disconnection",function(sck,c)
for i=0,4 do --判断是哪个断开了连接,,就把对应的socket变量置为 nil
if TcpSocketTable[i] == sck then
TcpSocketTable[i] = nil
print(i.."-Disconnect")
end
end
end)
end)
uart.on("data",0,function(data)
for i=0,4 do --把串口的数据发向不为 nil 的连接
if TcpSocketTable[i] ~= nil then
TcpSocketTable[i]:send(data)
end
end
end, 0)
--下面是连接路由器和没有连接路由器的监听函数,,好像是1S检测一次
printip = 0
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("+IP"..T.IP)
end
printip = 1
end)
现在把程序下进去

测试软件呢在这里下载--也可以自己下载个网络调试助手
https://item.taobao.com/item.htm?spm=686.1000925.0.0.4a155084jlU4Rd&id=558508797404
连接了路由器了....

第一个连接

测试数据

再来几个连接


现在再连接一个


我现在随意断开一个,看一看串口应该打印哪一个断开了连接


现在发数据


好现在呢控制就用多个客户端控制继电器


控制的指令呢咱就配置成----
http://www.cnblogs.com/yangfengwu/p/7513097.html
这篇文章最后的指令,,毕竟最终咱们就要做成那样子.....这样的话8266就应该使用的非常顺手和轻松了

对了在
http://www.cnblogs.com/yangfengwu/p/7520260.html
和http://www.cnblogs.com/yangfengwu/p/7524326.html
这篇两文章中有提及......这次是用多个TCP客户端控制,,还会加上CRC校验
可以直接用软件上的这两个按钮控制

先写不带CRC校验数据的
为了是程序好浏览,,就定义一个函数,,然后调用
现在的wifi.lua
wifi.setmode(wifi.STATIONAP)
cfg={}
cfg.ssid="Hellow8266"
cfg.pwd="11223344"
wifi.ap.config(cfg)
apcfg={}
apcfg.ssid="qqqqq"
apcfg.pwd="11223344"
wifi.sta.config(apcfg)
wifi.sta.connect()
TCPSever=net.createServer(net.TCP,28800)
TcpConnectCnt = 0
TcpSocketTable={}
TCPSever:listen(8080,function(socket)
if TcpConnectCnt == 4 then
if TcpSocketTable[0] ~= nil then
TcpSocketTable[0]:close()
TcpSocketTable[0] = nil
end
else
if TcpSocketTable[TcpConnectCnt+1] ~= nil then
TcpSocketTable[TcpConnectCnt+1]:close()
TcpSocketTable[TcpConnectCnt+1] = nil
end
end
TcpSocketTable[TcpConnectCnt] = socket
print(TcpConnectCnt.."-Connect")
TcpConnectCnt = TcpConnectCnt + 1
if TcpConnectCnt == 5 then
TcpConnectCnt = 0
end
socket:on("receive",function(socket,data)
uart.write(0,data)
control(data)
end)
socket:on("disconnection",function(sck,c)
for i=0,4 do
if TcpSocketTable[i] == sck then
TcpSocketTable[i] = nil
print(i.."-Disconnect")
end
end
end)
end)
function control(data)
if data == "++MD610" then
gpio.write(2,1)
print("Relay=1")
end
if data == "++MD600" then
gpio.write(2,0)
print("Relay=0")
end
end
uart.on("data",0,function(data)
for i=0,4 do
if TcpSocketTable[i] ~= nil then
TcpSocketTable[i]:send(data)
end
end
end, 0)
printip = 0
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("+IP"..T.IP)
end
printip = 1
end)


好现在控制一下

现在用另一个断开

对了最好把信息发给网络对不对,,,控制一下最好通过网络有一个回复
现在的wifi.lua
wifi.setmode(wifi.STATIONAP)
cfg={}
cfg.ssid="Hellow8266"
cfg.pwd="11223344"
wifi.ap.config(cfg)
apcfg={}
apcfg.ssid="qqqqq"
apcfg.pwd="11223344"
wifi.sta.config(apcfg)
wifi.sta.connect()
TCPSever=net.createServer(net.TCP,28800)
TcpConnectCnt = 0
TcpSocketTable={}
NowSocket=nil
TCPSever:listen(8080,function(socket)
if TcpConnectCnt == 4 then
if TcpSocketTable[0] ~= nil then
TcpSocketTable[0]:close()
TcpSocketTable[0] = nil
end
else
if TcpSocketTable[TcpConnectCnt+1] ~= nil then
TcpSocketTable[TcpConnectCnt+1]:close()
TcpSocketTable[TcpConnectCnt+1] = nil
end
end
TcpSocketTable[TcpConnectCnt] = socket
print(TcpConnectCnt.."-Connect")
TcpConnectCnt = TcpConnectCnt + 1
if TcpConnectCnt == 5 then
TcpConnectCnt = 0
end
socket:on("receive",function(socket,data)
NowSocket = socket
uart.write(0,data)
control(data)
end)
socket:on("disconnection",function(sck,c)
for i=0,4 do
if TcpSocketTable[i] == sck then
TcpSocketTable[i] = nil
print(i.."-Disconnect")
end
end
end)
end)
function control(data)
if data == "++MD610" then
gpio.write(2,1)
print("Relay=1")
if NowSocket ~= nil then
NowSocket:send("Relay=1")
NowSocket = nil
end
end
if data == "++MD600" then
gpio.write(2,0)
print("Relay=0")
if NowSocket ~= nil then
NowSocket:send("Relay=0")
NowSocket = nil
end
end
end
uart.on("data",0,function(data)
for i=0,4 do
if TcpSocketTable[i] ~= nil then
TcpSocketTable[i]:send(data)
end
end
end, 0)
printip = 0
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("+IP"..T.IP)
end
printip = 1
end)





好了现在加入CRC16校验数据
现在的wifi.lua
wifi.setmode(wifi.STATIONAP)
cfg={}
cfg.ssid="Hellow8266"
cfg.pwd="11223344"
wifi.ap.config(cfg)
apcfg={}
apcfg.ssid="qqqqq"
apcfg.pwd="11223344"
wifi.sta.config(apcfg)
wifi.sta.connect()
TCPSever=net.createServer(net.TCP,28800)
TcpConnectCnt = 0
TcpSocketTable={}
NowSocket=nil
TCPSever:listen(8080,function(socket)
if TcpConnectCnt == 4 then
if TcpSocketTable[0] ~= nil then
TcpSocketTable[0]:close()
TcpSocketTable[0] = nil
end
else
if TcpSocketTable[TcpConnectCnt+1] ~= nil then
TcpSocketTable[TcpConnectCnt+1]:close()
TcpSocketTable[TcpConnectCnt+1] = nil
end
end
TcpSocketTable[TcpConnectCnt] = socket
print(TcpConnectCnt.."-Connect")
TcpConnectCnt = TcpConnectCnt + 1
if TcpConnectCnt == 5 then
TcpConnectCnt = 0
end
socket:on("receive",function(socket,data)
NowSocket = socket
uart.write(0,data)
control(data)
end)
socket:on("disconnection",function(sck,c)
for i=0,4 do
if TcpSocketTable[i] == sck then
TcpSocketTable[i] = nil
print(i.."-Disconnect")
end
end
end)
end)
function control(data)
local RevLen = string.len (data)
local crc = ow.crc16(string.sub(data,1,RevLen-2))
local recrc = data:byte(RevLen)
local recrc = recrc*256
local recrc = recrc + data:byte(RevLen-1)
if crc == recrc then
if string.sub(data,1,7) == "++MD610" then
gpio.write(2,1)
print("Relay=1")
if NowSocket ~= nil then
NowSocket:send("Relay=1")
NowSocket = nil
end
end
if string.sub(data,1,7) == "++MD600" then
gpio.write(2,0)
print("Relay=0")
if NowSocket ~= nil then
NowSocket:send("Relay=0")
NowSocket = nil
end
end
else
if NowSocket ~= nil then
NowSocket:send("CRC16 Faild")
NowSocket = nil
end
end
end
uart.on("data",0,function(data)
for i=0,4 do
if TcpSocketTable[i] ~= nil then
TcpSocketTable[i]:send(data)
end
end
end, 0)
printip = 0
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)
printip = 0
end)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)
if printip == 0 then
print("+IP"..T.IP)
end
printip = 1
end)





他呢,,参数要填写字符串
上位机的CRC计算函数
/// <CRC 效验 >
///
/// </summary>
/// <param name="modbusdata"></param>
/// <param name="length"></param>
/// <returns></returns>
private int crc16_modbus(byte[] modbusdata, int length)
{
int i, j;
int crc = 0x0;
try
{
for (i = 0; i < length; i++)
{
crc ^= modbusdata[i];
for (j = 0; j < 8; j++)
{
if ((crc & 0x01) == 1)
{
crc = (crc >> 1) ^ 0xa001;
}
else
{
crc >>= 1;
}
}
}
}
catch (Exception)
{
throw;
}
return crc;
}
我的置高继电器函数
private void button7_Click_1(object sender, EventArgs e)
{
byte[] sendbyte = new byte[7];
sendbyte[0] = (byte)'+';//2B
sendbyte[1] = (byte)'+';
sendbyte[2] = (byte)'M';//4D
sendbyte[3] = (byte)'D';//44
sendbyte[4] = (byte)'6';//6
sendbyte[5] = (byte)'1';//1
if (comboBox3.Text=="继电器")//pin2
{
sendbyte[6] = (byte)'0';
}
else if (comboBox3.Text == "CS")//pin8
{
sendbyte[6] = (byte)'1';
}
else if (comboBox3.Text == "MOSI")//pin7
{
sendbyte[6] = (byte)'2';
}
else if (comboBox3.Text == "MISO")//pin6
{
sendbyte[6] = (byte)'3';
}
else if (comboBox3.Text == "CLK")//pin5
{
sendbyte[6] = (byte)'4';
}
if (radioButtonNetCon.Checked)//网络发送
{
TcpSendDataMethod(sendbyte);
}
else if (radioButtonSerialCon.Checked)//串口发送
{
SerialSend(sendbyte);
}
}
/// <TCP发送数据>
///
/// </summary>
/// <param name="byt"></param>
private void TcpSendDataMethod(byte[] byt)
{
int crc = 0;
byte[] sendbyte = new byte[byt.Length + 2];
for (int i = 0; i < byt.Length; i++)
{
sendbyte[i] = byt[i];
}
crc = crc16_modbus(byt, byt.Length);//计算CRC
byte[] Crcbyte = System.BitConverter.GetBytes(crc);//得到CRC
sendbyte[sendbyte.Length - 2] = Crcbyte[0];
sendbyte[sendbyte.Length - 1] = Crcbyte[1];
try { networkstrem.Write(sendbyte, 0, sendbyte.Length); }
catch (Exception) { MessageBox.Show("请检查连接", "提示!"); }
}
还要说一点让8266计算CRC,发现8266存储数据是大端模式......
好了现在测试一下用软件的按钮控制


好啦终于这完这一篇了....累..真心的累.............