i need help in arduinojson

[Mouka007]

hello
I have problem when convert DynamicJsonBuffer in my code from arduinojson 5 to arduinojson 6 , i need to resolve it without install libraries to version 5.13 , i know there are way by replace DynamicJsonDocument , i am try more than one time but the code is not work , i need help to replace DynamicJsonDocument in my code instead of DynamicJsonBuffer.

this my code i need to convert it to DynamicJsonDocument , i will show the the two part in the code which i need to solve it , if anyone need to show the full code i will upload it

if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial); //print config data to serial on startup
if (json.success()) {
Serial.println("\nparsed json");

      strcpy(MyApiKey, json["MyApiKey"]);
      strcpy(deviceID_1, json["deviceID_1"]);
      strcpy(deviceID_2, json["deviceID_2"]);
      strcpy(deviceID_3, json["deviceID_3"]);

      
    } else {
      Serial.println("failed to load json config");
      initialConfig = true;
    }
  }
}

} else {
Serial.println("failed to mount FS");
}

and this the second part

if (shouldSaveConfig) {
Serial.println("saving config");
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();

json["MyApiKey"] = MyApiKey
json["deviceID_1"] = deviceID_1;
json["deviceID_2"] = deviceID_2;
json["deviceID_3"] = deviceID_3;



File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {Serial.println("failed to open config file for writing");}    
json.prettyPrintTo(Serial);
json.printTo(configFile);
configFile.close();
Serial.println("config saved");
shouldSaveConfig = false;
initialConfig = false; 
ticker.detach();
digitalWrite(status_led, HIGH);
WiFi.mode(WIFI_STA);
ESP.restart();
delay(5000); 

}

[bblanchon]

Hi,

Please see the migration guide.

Best regards,
Benoit

[Mouka007]

thanks for your replay ,

i maked it but , i have problem in the function ,it dont gave any errro , but dont make same function , it dont save the given input .

this my code after replacement

if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
DynamicJsonDocument doc(200);
// char json[] =
//"{"MyApiKey":"MyApiKey","deviceID_1":"deviceID_1","deviceID_2":"deviceID_2","deviceID_3":"deviceID_3"}";
DeserializationError error = deserializeJson(doc , buf.get());
serializeJson(doc, Serial); //print config data to serial on startup
if (error) {
Serial.print("deserializeJson() failed with code");
Serial.println(error.c_str());
strcpy(MyApiKey, doc["MyApiKey"]);//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
strcpy(deviceID_1, doc["deviceID_1"]);
strcpy(deviceID_2, doc["deviceID_2"]);
strcpy(deviceID_3, doc["deviceID_3"]);

    } else {
      Serial.println("failed to load json config");
      initialConfig = true;
    }
  }
}

} else {
Serial.println("failed to mount FS");
}

and this second part

if (shouldSaveConfig) {
Serial.println("saving config");

DynamicJsonDocument doc(200);

doc["MyApiKey"] = MyApiKey;/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
doc["deviceID_1"] = deviceID_1;
doc["deviceID_2"] = deviceID_2;
doc["deviceID_3"] = deviceID_3;



File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {Serial.println("failed to open config file for writing");}    
serializeJsonPretty(doc, Serial);
serializeJson(doc, configFile);
configFile.close();
Serial.println("config saved");
shouldSaveConfig = false;
initialConfig = false; 
ticker.detach();
digitalWrite(status_led, HIGH);
WiFi.mode(WIFI_STA);
ESP.restart();
delay(5000); 

}

[bblanchon]

Hi @Mouka007,

Did you solve your issue?
If not can you summarize what works and what doesn't?

Best regards,
Benoit