I'm trying to create a function that enters a key/value into a JSON file.
But, since value can be an int or char, I don't want to create 2 functions for each type.
Is there a way ?
void setValue(char *key, char* value){
StaticJsonDocument<512> tempJDOC;
tempJDOC[key]=value;
}
EDIT1
#ifndef myJSON_h
#define myJSON_h
#include "Arduino.h"
#include <ArduinoJson.h>
#include "FS.h"
class myJSON
{
private:
bool _useSerial=false;
char _filename[30];
public:
char *ver="myJSON_v1.1";
myJSON(char *filename, bool useserial=false);
bool file_exists();
bool file_remove();
bool format ();
bool FS_ok();
void saveJSON2file(JsonDocument& _doc);
void readJSON_file(JsonDocument& _doc);
void printJSON(JsonDocument& _doc);
void PrettyprintJSON(JsonDocument& _doc);
const char *getValue (char *key);
template <class T>
void setValue(const char *key, T value);
//void setValue(const char *key, char *value);
};
#endif
EDIT2
#ifndef myJSON_h
#define myJSON_h
#include "Arduino.h"
#include <ArduinoJson.h>
#include "FS.h"
#define LOG_LENGTH 4
#define DOC_SIZE 512
template <class T> // . <---- line added
class myJSON
{
private:
bool _useSerial=false;
char _filename[30];
public:
char *ver="myJSON_v1.1";
myJSON(char *filename, bool useserial=false);
bool file_exists();
bool file_remove();
bool format ();
bool FS_ok();
void saveJSON2file(JsonDocument& _doc);
void readJSON_file(JsonDocument& _doc);
void printJSON(JsonDocument& _doc);
void PrettyprintJSON(JsonDocument& _doc);
const char *getValue (const char *key);
void removeValue(const char *key);
// void setValue(const char *key, char *value); <--- comment out
void updateArray(char* array_key, int val);
void printFile();
void setValue(const char *key, T value); <---- Added
};
#endif
and in .cpp file :
void myJSON::setValue(const char *key, T value){
StaticJsonDocument<512> tempJDOC;
myJSON::readJSON_file(tempJDOC);
tempJDOC[key]=value;
myJSON::saveJSON2file(tempJDOC);
myJSON::PrettyprintJSON(tempJDOC);
}