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Just try to set NTP server by command
wifi. setSNTP('us.pool.ntp.org', '0')
As result MCU drop all time intervals in tasks to zero and program stay in loop.
name of server or change time zone value is not significant, result always same.

Of course , I delete new line chars, but more easy to fix it source code.

  **const reg= /\r\n/gi;
  pem=pem.replace(reg, '');
  var sr=atob(pem);**

// var st="";
// for (var prop in sr){st+=sr.charCodeAt(prop).toString(16)+',';}
// console.log(st);

  if(flash.writeFileSync("certificate.cer", sr)) {
    console.log('New sertificate data saved...');

I see that problem is some symbols of line control that must be ignored by 'atob', but they decoded as 0x00 so that final decode is inccorrect.

When use function atob ('base64_text') then result not matched to binary data. For example first bytes of TLS key is 0x30, 0x82, 0x03... is "MIID...", but Espruino decode this string start from 0x00.

Additionally some troubles with events:

1. wifi.on('sta_left' )- reacted on events when client leave AP point in mode STA+AP
   
2. mqtt.on('disconnected') - after 7-8 hours of work loose events.
   

Yea, but it is need install SDK for build firmware with this option. Actually I looking for easy way to fix it. Because if deploy SW what reason to use JS ?, native C or C++ and ASM is not problem for me. Now, JS sketch is finished just I was forget to test for TLS, because using free MQTT and HTTP servers. Could you share/send ,If you has bin file with extended heap settings?

Ok, but now I use simple JS sketch that not call 'fs' or 'flash' .
var pem='MIIDbzCCAlegAwIBAgIJQgAAEjteoAbPMA0GCSqGSIb3DQEBCwUAMFQxGTAXBgNV'+
'BAoMEEFPIEthc3BlcnNreSBMYWIxNzA1BgNVBAMMLkthc3BlcnNreSBBbnRpLVZp'+
'cnVzIFBlcnNvbmFsIFJvb3QgQ2VydGlmaWNhdGUwHhcNMTkwNDIzMDg1NjQ3WhcN'+
'MjEwNDIyMDg1NjQ3WjBoMQswCQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5p'+
'YTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzETMBEGA1UEChMKR29vZ2xlIExMQzEX'+
'MBUGA1UEAxMOd3d3Lmdvb2dsZS5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw'+
'ggEKAoIBAQCkFcSa7T6ZGdyKtisfgGxAI4ZpcHYK4pw/NMWBqEzGvc4IHkw5S4cv'+
'8UBHM3T77VmpCPJab6BZ2mJs9d6mc3VhZ6zKn0Wf8UlfpHE+zOeW1/Es7OegXAsa'+
'13xrwpQ6oFu+EaOQBJpMtN0wRk8fzpAv3UZzq0iQKrgfq5wPCk+1B22GkTU5sBjV'+
'GTFjgT2l3iIs1C/K7zNgQfMoXlLULm3W7fn91yeLF/kqwZhqx2G7KThmqn1iSLd6'+
'ilu6WW0qLhEHOnPsB7DK1tmuSQv6/eahpKE6sL2HRSZC2DdUla4I5jOfOiCwMTLB'+
'b9bfSYDWNUN4DOfWZatMVp3yRfpWikGZAgMBAAGjMDAuMAsGA1UdDwQEAwIFoDAf'+
'BgNVHREEGDAWhwSs2RlEgg53d3cuZ29vZ2xlLmNvbTANBgkqhkiG9w0BAQsFAAOC'+
'AQEAFLxHgjDQhc7kOGMV/Zhy6ZBPdTY4o7nIQz/WTVhN4Yq6cwZbDN7DD0GPMt0Q'+
'BuQE+nAudU7pzQ9PnwBeaPgswpuETxK5dswsanwPyU7g6v5+jIvwI9/LHqTojlCl'+
'CeJxxDe3XQYUR0CN6/e+VdnWw1jYXCZ0QglvPsN8I1Y+toXokLgIsMsZAGYVWZDm'+
'QGV/V99wqZYCP17lIdt4ZjGvdX6ae6DoqwM/xoHJVZc+eIsKYY9zULwS1ZEuOoG1'+
'04vuFYfO8k+7lOt1nxFqPZHlEXNvenwLgP/DENnBhY7jGxTJ5ANJpbpy4bOPVSNx'+
'Vi00nQHpR7Dd30VPLcUpBHuagQ==';//+
//'-----END CERTIFICATE-----';
////////////////////////////////////////////////////////////////////////////
setTimeout(function() {
console.log(wifi.getDetails(),ESP32.getState());
var options=url.parse("https://www.google.com", true);
options.cert=atob(pem);
require("http").get(options, function(res) {

res.on('data', function(data) { console.log(data); });

});
console.log(ESP32.getState());
}, 5000);

Sorry,I cant build, but any way in my final sketch I use file system for upload PEM certificate using HTML5 on web page for user.

Not fix and Heap less then before BLE was enable.

Of course first of all I try to use simple request https w/o options ca,key and cert. But result is @No enough memory" when call setup_ssl.

When detect command - BLE is disable in sketch then all other commands after that is break...

HTTPS, TLS& SSL not working at 2.05, 2.04... I describe it separate topic for ESP32.
Often fs has bug return true on read or write operation but real result is false, if you call when other process like POST in operate so that need you in any way but according description JS support only sync mode and usually is ok for async mode.

Dears, I know about troubles with HTTPS on ESP32 - that get error with SSL out of memory at v.2.0 and higher. I tested on v2.04 and try latest v2.05, unfortunately JS again need memory for code to catch certificate , deploy ssl and connect by https.
But why is it not working when I manual plug PEM certificate, Because same approach is working on ESP32 for Arduino ?
Error: mbedtls_ssl_setup: No enough memory!