ESP32 SPIFFS load radio stations example cause WDT reboot.

[nodoubtman]

Hello.. I'm using ESP32, i need to take the radio info and put it into a char array,
here's my code:

#include <WiFi.h>
#include <ArduinoJson.h>
#include <SPIFFS.h>

struct ConfigRadioMtl {
char postesChars[150];
};
ConfigRadioMtl configRadioMtl[50];

Here's the json buffer:
{
"MAX_STATIONS": 50,
"station1": "https://cogecomedia.leanstream.co/CKACAM-MP3 # CKAC 730 CIRCULATION",
"station2": "http://icecast-cklx.rncm.ca/cklx.mp3 # 91.9 SPORTS",
"station3": "https://cogecomedia.leanstream.co/CKBEFM-MP3 # The BEAT 92.5",
"station4": "https://cogecomedia.leanstream.co/CKOIFM-MP3 # CKOI 96.9",
"station5": "https://cogecomedia.leanstream.co/CHMPFM-MP3? # 98,5",
"station6": "https://cogecomedia.leanstream.co/CFGLFM-MP3 # RYTHME FM 105,7",
"station7": "https://playerservices.streamtheworld.com/api/livestream-redirect/CHOMFMAAC.aac # CHOM FM",
"station8": "http://144.217.180.30:8111/ # WAVE-80",
"station9": "https://playerservices.streamtheworld.com/api/livestream-redirect/CITEFMAAC_SC # ROUGE-FM",
"station10": "http://cbcmp3.ic.llnwd.net/stream/cbcmp3_M-7QMTL0_MTL # ICI-MUSIQUE",
"station11": "https://igor.torontocast.com:1945/stream # AMERICAN-ROOTS",
"station12": "http://streamer3.clubbingstation.com/Clubbing-Station-Eu-aac # CLUBBING-STATION",
"station13": "https://playerservices.streamtheworld.com/api/livestream-redirect/CJADAMAAC.aac # CJAD",
"station14": "http://listen.classichits109.com:6980/;stream.nsv # CLASSIC HITS 109 - The 70s",
"station15": "https://playerservices.streamtheworld.com/api/livestream-redirect/QUB_RADIOAAC.aac # QUB",
"station16": "https://playerservices.streamtheworld.com/api/livestream-redirect/CKGMAMAAC.aac # TSN 690",
"station17": "https://vm.motionfm.com/motionone_free # DEEP MOTION",
"station18": "http://streams.1radio.ca:8059/live # The Lounge Sound – 1Radio.ca",
"station19": "https://stream.statsradio.com:8092/stream # K103.7 FM – CKRK",
"station20": "http://cristina.torontocast.com:8007/mp3-320 # JB Radio-2",
"station21": "http://ibiza.broadstreamer.com:8000/; # Italian Graffiati",
"station22": "https://443-1.reliastream.com/37/stream # Jammin Vibez Dancehall",
"station23": "http://144.217.180.30:8166/stream # Hard Rock Dinosaur-The ZED",
"station24": "http://kos.broadstreamer.com:8700/; # Radio Skipper",
"station25": "http://149.56.147.197:9675/stream # Le Rapologue Radio",
"station26": "http://128mp3.howlincountry.com/ # Howlin' Country",
"station27": "https://hitsmusicradio.out.airtime.pro/hitsmusicradio_a # Hits Music Radio",
"station28": "http://hazel.torontocast.com:1295/stream # 2ks Dance Radio",
"station29": "https://jenny.torontocast.com:8172/stream # Birch Street Radio",
"station30": "http://stream03.ustream.ca/cism128.mp3 # CISM",
"station31": "https://icecast.ckut.ca/903fm-128-stereo # CKUT 25",
"station32": "https://listen.jetstreamradio.com:8000/autodj # JetStream Radio",
"station33": "http://199.195.194.140:8034/stream # Montana QC",
"station34": "https://ithaca.cdnstream.com/1697_192 # Today's Office Mix Radio",
"station35": "http://cristina.torontocast.com:8111/; # Radio Khatru",
"station36": "http://a1team.net:8128/;.mp3 # La Radio Gospel",
"station37": "http://104fm.ca:8024/;stream.nsv # 104 FM Only Rock",
"station38": "http://larry.torontocast.com:1820/stream # Beach Chill-out Radio",
"station39": "http://dj.mediastreaming.it:7018/; # Radio Naples",
"station40": "http://stream02.ustream.ca:8000/cfim128.mp3 # CFIM",
"station41": "http://174.142.215.249:8880/;audio.mp3 # CNV Radio Numérique",
"station42": "https://stream.zeno.fm/8482yksb4y5tv # La Fiesta Latina Fm",
"station43": "http://janus.cdnstream.com:5173/stream # Teerex Radio Teerex",
"station44": "https://jenny.torontocast.com:2000/stream/CottageRadio # Cottage Radio",
"station45": "https://stream.zeno.fm/kvtau8d18qruv # World Hits",
"station46": "http://94.23.26.193:9011/stream # ProgCore Radio",
"station47": "https://dionysos.audio.imixxradio.com/live # Imixx Radio",
"station48": "https://stream.zeno.fm/fpka0zfm1qzuv # Radio Impact",
"station49": "https://www.radioking.com/play/radio-classique/271810 # RADIO CLASSIQUE MONTREAL",
"station50": "https://streamingv2.shoutcast.com/radiovm-cira-fm # RADIO VILLE MARIE"
}

// ARDUINOJSON 6
// load config from json RADIO MTL
bool loadConfigJsonRadioMTL() {
Serial.println(F("---------------------------"));
Serial.println(F("- LOADING CONFIG JSON MTL -"));
Serial.println(F("---------------------------"));

File configFile = SPIFFS.open("/RADIO_MTL_ONLINE.txt" "r");
if (!configFile) {
Serial.println(F("Failed to open config file"));
return false;
}

Serial.println(configFile.size());

size_t size = configFile.size();
if (size > 500000) {
Serial.println("Config file size is too large");
return false;
}
else {
Serial.println("Config File Size: " + String(size));
}

// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);

// We don't use String here because ArduinoJson library requires the input
// buffer to be mutable. If you don't use ArduinoJson, you may as well
// use configFile.readString instead.
configFile.readBytes(buf.get(), size);

// 4500
StaticJsonDocument<4500> doc;
DeserializationError err = deserializeJson(doc, buf.get());
if (err) {
Serial.println(err.c_str());
return false;
}
else {
Serial.println(F("deserializeJson() OK! :o)"));
}

int max_postes_radio_MTL = doc["MAX_STATIONS"];
Serial.println(max_postes_radio_MTL);

for (int i = 0; i < max_postes_radio_MTL ; i++) {
String stationX = "station";
stationX += String(i + 1);

char bufferChars[stationX.length() + 1];
stationX.toCharArray( bufferChars, sizeof(bufferChars) );
strncpy(configRadioMtl[i].postesChars, doc[bufferChars], sizeof(configRadioMtl[i].postesChars));
yield();

////////////////////////////////////////////////////////////////////
Serial.println(configRadioMtl[i].postesChars);
////////////////////////////////////////////////////////////////////

yield();
}

// CRASH After the last item :-(
configFile.close();

doc.clear();

return true;
}

Thank you very much..

[bblanchon]

Hi,

It looks like a stack corruption.
Please switch to a DynamicJsonDocument.

See also:

• Why does my device crash or reboot?

Best regards,
Benoit