Question

我是lua和nodemcu的新手。我有一个以下列方式运行的脚本：

1）在闪存中搜索两个配置文件，如果两者都存在，则在站模式下配置wifi AP（wifi配置存储在文件中）。然后创建一次性警报以在20秒后触发回调以检查我们是否获得了IP。

2）如果在回调之前接收到IP，则取消注册前一个计时器并执行HTTP发布，并创建另一个计时器，该计时器在另外20秒后触发，以检查是否已执行http回调。

3）如果首先运行http回调，则取消注册前一个计时器。

4）在所有这些检查之后，只需启动一个定时器，每10 ms运行一个脚本“pollslave.lua”，以轮询HSPI总线。

我试图确保一次只有一个计时器正在运行。

我现在正在通过保持服务器（在开发PC中）离线来测试，以便不执行HTTP回调并且首先执行定时器回调。

它开始轮询从机，但在大约10秒后nodemcu重新启动。 Folowing是我的“init_test.lua”

local fileutil=require("fileutility")
local wifiutil=require("wifiutility")
local httputil=require("httputility")

local dvconf="dvconf.cnf"
local wificonf="wificonf.cnf"
local post_method="TestSrv"
msg=""

wifi.eventmon.register(wifi.eventmon.STA_GOT_IP,
    function(T)
        print("IP Received")
        if wifitout then
            wifitout:unregister()
            print("WiFi Timout Monitor was Running...hence stopped")
            wifitout=nil
        end
        local dconf=fileutil.loadDeviceConfigs(dvconf)
        local srv_url=dconf.server
        local auth_id=dconf.auth_id
        local pwd=dconf.pwd
        local len=string.len(srv_url)
        if string.sub(srv_url,len,len)~="/" then
            srv_url=srv_url.."/"
        end
        httpTimeoutMon()
        httputil.getServerLogin(srv_url..post_method,
        auth_id,pwd,function() startPollSlave() end)
    end)

spi.setup(1,spi.MASTER,spi.CPOL_HIGH,spi.CPHA_LOW,8,80,spi.FULLDUPLEX)

wifi.setphymode(wifi.PHYMODE_N)


function startPollSlave()
    pollslavetimer=tmr.create()
    pollslavetimer:alarm(10,tmr.ALARM_AUTO,function() dofile("pollslave.lua") end)
end

function httpTimeoutMon()
    srvtout=tmr.create()
    print("Starting Server Timeout Monitor..")
    srvtout:alarm(20000,tmr.ALARM_SINGLE,function()
        print("http server Timeout Occured...")
        if pollslavetimer then
            local s,m=pollslavetimer:state()
            if s==false then
                msg="Server is offline.."
                pollslavetimer:start()
                print("Pollslave was created but not running..hence started..")
            end
        else
            print("Pollslave was not created...hence started...")
            msg="Server is offline.."
            startPollSlave()
        end
    end)
    print("Started Server Timeout Monitor...")
end

function wifiTimeoutMon()
    wifitout=tmr.create()
    print("Starting WiFi Timeout Monitor")
    wifitout:alarm(20000,tmr.ALARM_SINGLE,function()
        print("20 sec Timeout Occured..")
        if pollslavetimer then
            local s,m=pollslavetimer:state()
            if s==false then
                wifi.sta.clearconfig()
                msg="No Internet Access.."
                pollslavetimer:start() 
            end
        else
            wifi.sta.clearconfig()
            msg="No Internet Access.."
            startPollSlave()
        end
    end)
    print("WiFi Timeout Monitor Started..")
end

if file.exists(dvconf) then
    print("Device Settings File found...")
    local dconf=fileutil.loadDeviceConfigs(dvconf)
    if file.exists(wificonf) then
        print("WiFi Configurations found...")
        wifi.sta.getap(1,function(table)
            print("WiFi Scan Complete...")
            local count,wtable=wifiutil.indexWiFiList(table)
            print("Detected Usable WiFi: "..count)
            print("Sorting WiFi..")
            wtable=wifiutil.sortWiFiList(wtable,count)
            local i=0
            print("Loading Stored WiFi..")
            local wconf=fileutil.loadWiFiConfig(wificonf)
            while i<count do
                local j=0
                while wconf and wconf[j] do
                    if wtable[i].ssid==wconf[j].ssid and wtable[i].bssid==wconf[j].bssid then
                        print("Stored WiFi Matches with detected wifi no. "..i)
                        wifiTimeoutMon()
                        print("Configuring detected WiFi..")
wifi.sta.config({ssid=wtable[i].ssid,pwd=wconf[j].pwd,bssid=wtable[i].bssid})
                        print("Configured..Now Wait For IP...")
                        i=count;break
                    end
                    j=j+1
                end
                i=i+1
            end
            if i==count then
                msg="Please Connect To WiFi.."
                startPollSlave()
            end
            print("Leaving now..")
        end)
    else
        print("WiFi Configurations not found...")
        --startPollSlave()
    end
else
    print("Device Configurations not found...")
    --startPollSlave()
end

以下是调试输出....

dofile("init_test.lua")
Device Settings File found...
Device Configurations loaded...
WiFi Configurations found...
> WiFi Scan Complete...

Detected Usable WiFi: 4
Sorting WiFi..
Loading Stored WiFi..
Loading line 0
Stored WiFi Matches with detected wifi no. 0
Starting WiFi Timeout Monitor
WiFi Timeout Monitor Started..
Configuring detected WiFi..
Configured..Now Wait For IP...
Leaving now..
IP Received
WiFi Timout Monitor was Running...hence stopped
Device Configurations loaded...
Starting Server Timeout Monitor..
Started Server Timeout Monitor...
http post issued..now wait for server response...
HTTP client: Disconnected with error: -11
HTTP client: Connection timeout
HTTP client: Connection timeout
http server Timeout Occured...
Pollslave was not created...hence started...
Got:255 Heap Remaining:19840
Got:255 Heap Remaining:19840
Got:255 Heap Remaining:19840
Got:255 Heap Remaining:19840
...........
Got:255 Heap Remaining:1312
Got:255 Heap Remaining:1312
Got:255 Heap Remaining:1312
Got:255 Heap Remaining:1104
Got:255 Heap Remaining:1104
...........
Got:255 Heap Remaining:1104
E:M 520
PANIC: unprotected error in call to Lua API (not enough memory)

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x40100000, len 27264, room 16 
tail 0
chksum 0xc0
load 0x3ffe8000, len 2432, room 8 
tail 8
chksum 0x7b
load 0x3ffe8980, len 136, room 0 
tail 8
chksum 0xe0
csum 0xe0

nodemcu lua - 堆大小持续减少并发生软件重置

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