first ConfigUtils version published in pio lib

Author: wassfila

README.md

@@ -1,2 +1,29 @@
 # ConfigUtils
 A tiny helper library to wrap dependencies and provide a one liner to load json config files
+
+# Code example
+```c++
+#include <Arduino.h>
+#include <ArduinoJson.h>
+
+#include <ConfigUtils.h>
+
+DynamicJsonDocument config(5*1024);//5 KB
+
+void setup() {
+
+    Serial.begin(115200);
+
+    //required 'data' folder with 'config.json'
+    //flash the file system with the platformio command :
+    //>pio run -t uploadfs
+    load_json(config,"/config.json");
+    //now you can configure any component with json
+    //below just a pretty print
+    serializeJsonPretty(config, Serial);
+}
+
+void loop() {
+  delay(10000);
+}
+```

examples/main.ino

@@ -0,0 +1,23 @@
+#include <Arduino.h>
+#include <ArduinoJson.h>
+
+#include <ConfigUtils.h>
+
+DynamicJsonDocument config(5*1024);//5 KB
+
+void setup() {
+
+    Serial.begin(115200);
+
+    //required 'data' folder with 'config.json'
+    //flash the file system with the platformio command :
+    //>pio run -t uploadfs
+    load_json(config,"/config.json");
+    //now you can configure any component with json
+    //below just a pretty print
+    serializeJsonPretty(config, Serial);
+}
+
+void loop() {
+  delay(10000);
+}

include/ConfigUtils.h

@@ -0,0 +1,9 @@
+#include <ArduinoJson.h>
+
+bool load_config(DynamicJsonDocument &config,bool verbose=false);
+bool save_config(DynamicJsonDocument &config);
+
+bool load_json(DynamicJsonDocument &config,const char* FileName,bool verbose=false);
+bool save_json(DynamicJsonDocument &config,const char* FileName);
+
+void timelog(String Text);

library.json

@@ -0,0 +1,19 @@
+{
+    "name": "ConfigUtils",
+    "version" : "1.0.0",
+    "description" : "A tiny helper library to wrap dependencies and provide a one liner to load json config files",
+    "keywords" : "json, Arduinojson, spiffs, config",
+    "license" : "MIT",
+    "repository":{
+        "type" : "git",
+        "url" : "https://github.com/ESP32Home/ConfigUtils.git"
+    },
+    "authors":{
+        "name" : "wassfila",
+        "url": "https://github.com/wassfila"
+    },
+    "dependencies":{
+    },
+    "frameworks" : "arduino",
+    "platforms" : "espressif32"
+}

src/ConfigUtils.cpp

@@ -0,0 +1,75 @@
+#include "ConfigUtils.h"
+#include <FS.h>
+#include <SPIFFS.h>
+
+#define FORMAT_SPIFFS_IF_FAILED true
+static bool ready = false;
+
+bool spiffs_init(){
+    if(!SPIFFS.begin(FORMAT_SPIFFS_IF_FAILED)){
+        Serial.println("SPIFFS Mount Failed");
+        return false;
+    }
+    ready = true;
+    return true;
+}
+
+bool load_json(DynamicJsonDocument &config,const char* FileName,bool verbose){
+    if(!ready){
+        if(!spiffs_init()){
+            return false;
+        }
+    }
+    File file = SPIFFS.open(FileName,"r");
+
+    DeserializationError error = deserializeJson(config, file);
+    if (error){
+        Serial.println(F("Failed to read json file"));
+        file.close();
+        return false;
+    }else{
+        if(verbose){
+            Serial.println();
+            Serial.println("Loaded json :");
+            serializeJsonPretty(config, Serial);
+            Serial.println();
+        }
+        file.close();
+        return true;
+    }
+}
+
+bool save_json(DynamicJsonDocument &config,const char* FileName){
+    if(!ready){
+        if(!spiffs_init()){
+            return false;
+        }
+    }
+    File file = SPIFFS.open(FileName,"w");
+    file.close();
+    return true;
+}
+
+bool load_config(DynamicJsonDocument &config,bool verbose){
+    bool result = load_json(config,"/config.json");
+    if(verbose){
+        if(result){
+            Serial.println();
+            Serial.println("Loaded configuration :");
+            serializeJsonPretty(config, Serial);
+            Serial.println();
+        }else{
+            Serial.println("Failed to load configuration");
+        }
+    }
+    return result;
+}
+
+bool save_config(DynamicJsonDocument &config){
+    return save_json(config,"/config.json");
+}
+
+void timelog(String Text){
+  Serial.println(String(millis())+" : "+Text);//micros()
+}
+