Description
I cannot correct return JsonObject from my custom class. When I call serializeJson it calls exception. Inside class function serializeJson works correctly.
Error:
Exception (3):
epc1=0x40202d08 epc2=0x00000000 epc3=0x00000000 excvaddr=0x402032a4 depc=0x00000000
ctx: cont
sp: 3ffffd40 end: 3fffffd0 offset: 01a0
My code:
SMConfigESP.h
#ifndef ARDUINOPROJECTS_CONFIGESP_H
#define ARDUINOPROJECTS_CONFIGESP_H
#include <ArduinoJson.h>
#define CONFIG_JSON_SIZE 200 //Размер json config ----
class SMConfigESP{
public:
JsonObject buildJson();
};
#endif //ARDUINOPROJECTS_CONFIGESP_H
SMConfigESP.cpp
#include "SMConfigESP.h"
SMConfigESP::SMConfigESP() {
}
JsonObject SMConfigESP::buildJson() {
StaticJsonDocument<CONFIG_JSON_SIZE> jsonDoc;
JsonObject root = jsonDoc.to<JsonObject>();
root["sensor"] = "gps";
root["time"] = 1351824120;
JsonArray data = root.createNestedArray("data");
data.add(48.756080);
data.add(2.302038);
String t;
//It`s working!!!
serializeJson(root, t);
return root;
}main.ino
#include <ArduinoJson.h>
#include "SMConfigESP.h"
SMConfigESP smConfigESP;
void setup() {
JsonObject rootJsonConfig = smConfigESP.buildJson();
String t;
//It throw exception!
serializeJson(rootJsonConfig, t);
}
void loop() {
}