How to reset WIZnet 5500 while socket is not available? #7518

espruino-discuss · 2025-02-12T18:41:53Z

espruino-discuss
Feb 12, 2025
Maintainer

Posted at 2020-09-29 by user109783

I used wiznet 5500 for tcp connection, but sometime I didn't know why it stopped. And then I tried to reset system, but the socket not avaiable still exiested. I had to power off the board then the wiznet work fined agnin.

How to reset WIZnet 5500 while socket is not available?

No free sockets found

This is my code, and run on the board STM32F4DISCOVERY

let WIZnet = require("WIZnet");
let st = require("Storage");
let WebServer = require('WebServer');
let ip = "192.168.1.238";
let gateway = "192.168.1.1";
let eth = null;


E.on('init', function () {
    SPI2.setup({mosi: B15, miso: B14, sck: B13});
    eth = WIZnet.connect(SPI2, B12);
    setTimeout(function () {
        eth.setIP({ip: ip, gateway: gateway, subnet: "255.255.255.0",dns:"8.8.8.8"});
        console.log("ip", eth.getIP());
        startServer();
    }, 1500);
});

function startServer() {
    var webs = new WebServer({
        port: 8080,
        file_system: '/var/www/',
        memory: {
            'index.html': {
                'type': 'text/html',
                'content': '<html><head><script src="index.js"></script></head><body>' +
                    '<p>Hello from in memory HTML!</p>' +
                    '<br><button onclick="hello()"> Run client side JavaScript</button>' +
                    '<br><br><button onclick="window.open(\'index.njs\', \'_top\')"> Run server side JavaScript</button>' +
                    '<br><br><button onclick="window.open(\'index.txt\', \'_top\')"> Go to a simple text</button>' +
                    '<br><p align="right"> <small>Espruino WebServer</small> </p>' +
                    '</body></html>'
            },
            'index.txt': {
                'content': 'Hello from in memory text!'
            },
            'index.js': {
                'type': 'application/javascript',
                'content': "function hello(){ alert('Hello from in memory client side javascript'); }",
            },
            'index.njs': {
                'content': index_njs
            },
            'favicon.ico': {
                'type': 'image/x-icon',
                'content': "\0\0\x01\0\x01\0\x10\x10\x10\0\x01\0\x04\x00\xf0\0\0\0\x16\0\0\x00\x89PNG\x0d\x0a\x1a\x0a\0\0\0\x0dIHDR\0\0\0\x10\0\0\0\x10\x08\x06\0\0\0\x1f\xf3\xffa\0\0\x00\xb7IDAT8\x8d\xa5S\xc1\x0d\x03!\x0csN\xb7\x91w\xcaP\xde)3\xd1G\x09\x0a\x85\xab\xa8\xea\x0f\x02\x82c\x1b0\x92x\x82\xbb\xb7:\x8f\x08D\x84\xd5\xb5\x1b\x00H\xb6>N\x04uN\x12\x92\x10\x11S\xcd]\x0b\xbf\xa9\xe9\x8a\x00\xa0I\x1a*\x06A\x97\xb7\x90\xd4\x8e$A\x12\xee\xde\xb2vR\x90$\xc8q\xf6\x03\xbc\x15Ldw]\x88zpc\xab*\x8c\x08H\xb2A\x90\x1e\x97\xce\x1bd3\x00\xb8v\x9b\xa7p\xf7\xb6\x10\x9cb\xc9\xe0Wd\x06\x17\x80v\xe2\xfb\x09\x17\x00H\xfa\x8b\xc0\xba\x9c\xe3CU\xf1\xc8@\xd2\x08fW\xf8i3?U\x12\x18z\x16\xf5A\x9ddc_\xee\xbd~e{*z\x01|\xcdnfT\x03\x0an\0\0\0\x00IEND\xaeB`\x82"
            }
        }
    });

    webs.on('start', function (WebServer) {
        console.log('WebServer listening on port ' + WebServer.port);
    });
    webs.on('request', function (request, response, parsedUrl, WebServer) {
        console.log('WebServer requested', parsedUrl);
    });
    webs.on('error', function (error, WebServer) {
        console.log('WebServer error', error);
    });

    webs.createServer();
}

function index_njs(req, res, uri, webs) {
    return {
        type: 'text/html',
        content: '<html>' +
            '<p>Hello from in memory server side javascript!</p>' +
            '<p><b>Espruino Memory Usage: </b><br>' + JSON.stringify(process.memory()) + '</p>' +
            '<p><b>Espruino Flash Usage: </b><br>' + JSON.stringify(require('Flash').getFree()) + '</p>' +
            '</html>'
    };
}

// setInterval(function () {
//     eth.getIP();
//     startServer();
// }, 5000);

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espruino-discuss · 2025-02-12T18:41:56Z

espruino-discuss
Feb 12, 2025
Maintainer Author

Posted at 2020-09-29 by @gfwilliams

What device are you running this on? The W5500 has an actual reset pin that could be toggled so that could help?

Posted at 2020-09-29 by @MaBecker

Running out of sockets on the device site, is mostly caused by missing .end() or not handling all calls.

Give curl a try to see the difference.

curl -V <web-server-ip>/index.njs

Feel free to share your code to reproduce it, got some Wiz5500 on my desk.

Posted at 2020-09-30 by user109783

Yes, the reset pin can help this issue. Or restart the power of the device can also reset the W5500. But this issue will happen in a few minute again.

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How to reset WIZnet 5500 while socket is not available? #7518

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How to reset WIZnet 5500 while socket is not available? #7518

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