Implemented persistent settings as binary format, got rid of json architecture

Notes.md

@@ -25,3 +25,13 @@
 ### 19.02.2022
 + Stable and fast csv database implemented.
 + Basic REST API: read, create and delete users / read and drop csv db 
+
+### 19.03.2022
++ Settings pos
+    + WifiSSID - terminator 0x00 - Pos.: 0-31 (00 - 1F)
+    + WifiPassword - terminator 0x00 - Pos.: 32-63 (20 - 3F)
+    + Device IP - 40-43
+    + Subnet 44 - 47
+    + Gateway 48 - 4B
++ Flags: 
+    + Mode 0 - station; 1 - client 4C 

data/config.json

@@ -1,5 +0,0 @@
-{
-    "THEMEID": 1,
-    "SSID":"DoorLock",
-    "PASS":"geheim123"
-}

data/text.json

@@ -1,5 +0,0 @@
-{
-    "GREET":"Hallo $name",
-    "FAIL":"PIN Incorrect",
-    "HOME":"Willkommen!|Pin oder Karte"
-}

data/wifi

@@ -1 +0,0 @@
-1 DoorLock geheim123 10.1.4.22

src/Config.cpp

@@ -1,5 +1,5 @@
 #include "Config.h"
-
+#define CONFIG_SIZE 0x4C
 Config::Config()
 {
     if (!LittleFS.begin())
@@ -8,14 +8,99 @@ Config::Config()
         return;
     }
 }
-
-
-bool Config::loadConfig()
+Config::~Config()
 {
-    StaticJsonDocument<1024> doc;
-    File config_file = LittleFS.open("/config.json","r");
-    deserializeJson(doc, config_file); 
-    this->SSID=doc["SSID"].as<const char*>();
-    this->PASS=doc["PASS"].as<const char*>();
+    free(buffer);
+}
+
+bool Config::loadBin()
+{
+    File config_file = LittleFS.open("/settings", "r");
+    if(buffer==nullptr)
+    buffer = (uint8_t*) malloc(CONFIG_SIZE);
+    if (config_file.available())
+    {
+        config_file.read(buffer, CONFIG_SIZE);
+        SSID = (char*) buffer;
+        buffer[0x1F] = 0x00;
+        buffer[0x3F] = 0x00;
+        PASS = (char*)(buffer + 0x20);
+        ip = (uint32_t *)(buffer + 0x40);
+        subnet = (uint32_t *)(buffer + 0x44);
+        gw = (uint32_t *)(buffer + 0x48);
+        mode = (uint8_t *)(buffer + 0x4C);
+    }
+    config_file.close();
     return true;
 }
+
+bool Config::saveBin()
+{
+    File config_file = LittleFS.open("/settings", "w");
+    config_file.write(buffer,CONFIG_SIZE);
+    delay(100);
+    config_file.close();
+    return true;
+}
+bool Config::setSSID(const char *ssid){
+    size_t offset = 0;
+    bool copy = true;
+    for(int i=0; i<31;i++){
+        if(ssid[i]==0x00)
+            copy = false;
+        buffer[offset+i] = copy?ssid[i]:0x00;
+    }
+    buffer[offset+31] = '\n';
+    return true;
+}
+bool Config::setPASS(const char *pass){
+    size_t offset = 0x20;
+    bool copy = true;
+    for(int i=0; i<31;i++){
+        if(pass[i]==0x00)
+            copy = false;
+        buffer[offset+i] = copy?pass[i]:0x00;
+    }
+    buffer[offset+31] = '\n';
+    return true;
+}
+void Config::print(){
+    Serial.print("BufferHEX ");
+    for(int i=0; i<CONFIG_SIZE;i++){
+       Serial.print(i,HEX); 
+       Serial.print(">");
+       Serial.print(buffer[i],HEX);
+       Serial.print("|");
+    }
+    Serial.print("SSID: ");
+    Serial.println(SSID);
+    Serial.print("PASS: ");
+    Serial.println(PASS);    
+    Serial.print("IP");
+    Serial.print((uint8_t) *ip, DEC);
+    Serial.print(".");
+    Serial.print((uint8_t)*((uint8_t*)ip+1), DEC);
+    Serial.print(".");
+    Serial.print((uint8_t) *((uint8_t*)ip+2), DEC);
+    Serial.print(".");
+    Serial.println((uint8_t) *((uint8_t*)ip+3), DEC);
+    Serial.print("GW");
+    Serial.print((uint8_t) *((uint8_t*)gw), DEC);
+    Serial.print(".");
+    Serial.print((uint8_t) *((uint8_t*)gw+1), DEC);
+    Serial.print(".");
+    Serial.print((uint8_t) *((uint8_t*)gw+2), DEC);
+    Serial.print(".");
+    Serial.println((uint8_t) *((uint8_t*)gw+3), DEC);
+    Serial.print("SUBNET");
+    Serial.print((uint8_t)*((uint8_t*)subnet), DEC);
+    Serial.print(".");
+    Serial.print((uint8_t)*((uint8_t*)subnet+1), DEC);
+    Serial.print(".");
+    Serial.print((uint8_t)*((uint8_t*)subnet+2), DEC);
+    Serial.print(".");
+    Serial.println((uint8_t)*((uint8_t*)subnet+3), DEC);
+
+
+    
+}

src/Config.h

@@ -3,10 +3,22 @@
 #include "ArduinoJson.h"
 class Config
 {
+private:
+    uint8_t *buffer = nullptr;
+
 public:
     Config();
+    ~Config();
     const char *SSID;
     const char *PASS;
-    int THEME;
+    uint8_t *mode;
+    uint32_t *ip;
+    uint32_t *subnet;
+    uint32_t *gw;
     bool loadConfig();
+    bool loadBin();
+    bool saveBin();
+    void print();
+    bool setSSID(const char *ssid);
+    bool setPASS(const char *pass);
 };

src/main.cpp

@@ -31,12 +31,13 @@ IPAddress dns(192, 168, 178, 1);
 DNSServer dnsServer;
 void setup()
 {
-	config.loadConfig();
+	//config.loadConfig();
+	config.loadBin();
 	Serial.begin(115200);
 	Serial.println("Starting System");
 	Serial.print("\t1. Network config ->");
 	WiFi.mode(WIFI_AP);
-	Serial.println(WiFi.softAPConfig(local_IP, local_IP, subnet) ? "Ready" : "Failed!");
+	Serial.println(WiFi.softAPConfig(*config.ip, *config.gw, *config.subnet) ? "Ready" : "Failed!");
 	Serial.print("\t2 AP setup " + String(config.SSID) + " -> ");
 	if (strlen(config.PASS) > 0)
 		Serial.println(WiFi.softAP(config.SSID, config.PASS) ? "Ready" : "Failed!");