应该是LUA介绍8266的最后一篇,,,,,,下回是直接用SDK,,然后再列个12345.......不过要等一两个星期,先忙完朋友的事情

前面几篇

用AT指令版本的

用LUA语言的,更灵活,功能更强

还缺一样....这篇...保存数据...这样的话就可以随意修改启动时工作在哪一种模式,哪一种通信,以及其余需要保存在模块内部的信息

就实现上位机软件的第一个功能,,修改启动模式

自己的上位机按钮事件

private void button2_Click(objectsender, EventArgs e)

{byte[] sendbyte = new byte[6];

sendbyte[0] = (byte)‘+‘;//2B

sendbyte[1] = (byte)‘+‘;

sendbyte[2] = (byte)‘M‘;//4D

sendbyte[3] = (byte)‘D‘;//44

sendbyte[4] = (byte)‘0‘;//0

if(radioButton5.Checked)

{

sendbyte[5] = (byte)‘0‘;

}else if(radioButton6.Checked)

{

sendbyte[5] = (byte)‘1‘;

}else if(radioButton7.Checked)

{

sendbyte[5] = (byte)‘2‘;

}if(radioButtonNetCon.Checked)

{

TcpSendDataMethod(sendbyte);

}else if(radioButtonSerialCon.Checked)

{

SerialSend(sendbyte);

}

}

++MD00                 AP模式

++MD01                Station模式

++MD00                AP+Station模式

其实最后还有CRC16校验码

看文件操作

if file.open("mode.lua", "w+") then

file.writeline(string.sub(data,6,6))--MODE

print("MODE="..string.sub(data,6,6))

file.close()elseprint("open mode.lua faild")

end

注意

if file.open("mode.lua", "w+") then

file.writeline("123")

file.flush()//连续写最好加上

file.writeline("456")

file.flush()

file.writeline("789")

file.close()elseprint("open mode.lua faild")

end

像是这样  mode.lua文件里面会是这样

那么读的时候

file.open("mode.lua", "r") then

s1=file.readline()

s2=file.readline()

s3=file.readline()

file.close()

end

s1 ="123\r"

s2 ="456\r"

s3 ="789\r"

所以写进去一行3个但是读出来会多加一个换行符

if file.open("mode.lua", "r") then

local Mode=file.readline()if Mode ==nil then

Mode="2"endif Mode:byte(1) == 48then

print("Wifi MODE: SOFTAP")

wifi.setmode(wifi.SOFTAP)

elseif Mode:byte(1) == 49then

print("Wifi MODE: STATION")

wifi.setmode(wifi.STATION)elseprint("Wifi MODE: STATIONAP")

wifi.setmode(wifi.STATIONAP)

end

file.close()

end

直接上源码吧

init.lua

gpio.mode(4,gpio.OUTPUT)

gpio.mode(2,gpio.OUTPUT)

gpio.write(4,1)ifadc.force_init_mode(adc.INIT_ADC) then

node.restart()returnend

tmr.alarm(0, 1000, 1, function()

gpio.write(4,1-gpio.read(4))

end)

tmr.alarm(1, 5000, 0, function()

dofile("file.lua")

dofile("UDP.lua")

end)

UDP.lua

if file.open("mode.lua", "r") then

local Mode=file.readline()if Mode ==nil then

Mode="2"endif Mode:byte(1) == 48then

print("Wifi MODE: SOFTAP")

wifi.setmode(wifi.SOFTAP)

elseif Mode:byte(1) == 49then

print("Wifi MODE: STATION")

wifi.setmode(wifi.STATION)elseprint("Wifi MODE: STATIONAP")

wifi.setmode(wifi.STATIONAP)

end

file.close()

end

cfg={}

cfg= wifi.ap.getconfig(true)if cfg.ssid ==nil then

cfg.ssid="Hellow8266"cfg.pwd="11223344"end

print("APssid:"..cfg.ssid)if cfg.pwd ==nil then

print("APpwd: nil")elseprint("APpwd:"..cfg.pwd)

end

cfg.save=truewifi.ap.config(cfg)

apcfg={}

apcfg= wifi.sta.getconfig(true)if apcfg.ssid ==nil then

apcfg.ssid="qqqqq"apcfg.pwd="11223344"end

print("APssid:"..apcfg.ssid)if apcfg.pwd ==nil then

print("Stationpwd: nil")elseprint("Stationpwd:"..apcfg.pwd)

end

apcfg.save=truewifi.sta.config(apcfg)

wifi.sta.autoconnect(1)

ConnectIP= "192.168.1.103"ConnectPort= 8080UdpSocket=net.createUDPSocket()

UdpSocket:listen(ConnectPort)

UdpSocketTable={}

UdpIPTable={}

UdpPortTable={}

UdpConnectCnt= 0UdpCanConnect= 0UdpSocket:on("receive", function(socket, data, port, ip)

UdpCanConnect= 1

for i=0,2 do

if UdpIPTable[i] == ip and UdpPortTable[i] ==port then

UdpCanConnect= 0end

endif ip == ConnectIP and port ==ConnectPort then

UdpCanConnect= 0endif UdpCanConnect == 1then

UdpSocketTable[UdpConnectCnt]=socket

UdpIPTable[UdpConnectCnt]=ip

UdpPortTable[UdpConnectCnt]=port

print("\r\n"..UdpConnectCnt.."-Connect")

UdpConnectCnt= UdpConnectCnt + 1endif UdpConnectCnt == 3then

UdpConnectCnt= 0end

uart.write(0,data)

end)

UartReadCnt=0UartReadCntCopy=0UartReadData=""UartReadDataCopy=""uart.on("data",0,function(data)

UartReadCnt= UartReadCnt + 1UartReadData=UartReadData..data

end,0)

tmr.alarm(2, 5, 1, function()if UartReadCnt ~=0thenif UartReadCnt ==UartReadCntCopy then

UartReadCnt= 0UartReadCntCopy= 0UartReadDataCopy=UartReadData

UartReadData=""Config(UartReadDataCopy)

NetSend(UartReadDataCopy)elseUartReadCntCopy=UartReadCnt

end

end

end)

function NetSend(data)if UdpSocket ~=nil then

UdpSocket:send(ConnectPort,ConnectIP,data)

endfor i=0,2 do

if UdpSocketTable[i] ~=nil then

UdpSocketTable[i]:send(UdpPortTable[i],UdpIPTable[i],data)

end

end

end

printip= 0wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, function(T)

printip= 0end)

wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, function(T)if printip == 0then

print("+IP"..T.IP)

end

printip= 1end)

file.lua

就是接收串口的数据函数,检测CRC对不对,,然后把数据写进mode.lua,,,对了这样设置了,,内部会自动生成一个mode.lua,,不用自己弄

function Config(data)

local RevLen= string.len (data)

local crc= ow.crc16(string.sub(data,1,RevLen-2))

local recrc= data:byte(RevLen)

recrc= recrc*256recrc= recrc + data:byte(RevLen-1)if crc ==recrc then--[[8266Mode ]]if RevLen == 8thenif string.sub(data,1,5) == "++MD0" then----Modeif file.open("mode.lua", "w+") then

file.writeline(string.sub(data,6,6))--MODE

print("MODE="..string.sub(data,6,6))

file.close()elseprint("open mode.lua faild")

end

end--[[8266Mode ]]

end

end

end

其实也没有说的了,串口用空闲中断接收的,前面说了,,,,剩下的主要是自己看着API文档自己测试测试哈

现在把程序下进去用上位机试一试修改模式

复位重启一下

对了我把UDP的修改了一个地方,,,写的太着急写错了,

这样才是判断是新的连接,而且不和默认的一样才执行后面的

完了一个大的心思

原文：http://www.cnblogs.com/yangfengwu/p/7534521.html