Update documentation and examples

Author: tobozo

README.md

@@ -156,11 +156,13 @@ const char *password = "";
 
 esp32FOTA esp32FOTA("esp32-fota-http", "1.0.0");
 
+const char* manifest_url = "http://server/fota/fota.json";
+
 void setup()
 {
   Serial.begin(115200);
   setup_wifi();
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   // esp32FOTA.useDeviceId( true ); // optionally append the device ID to the HTTP query
 }
 
@@ -196,6 +198,9 @@ Late init is possible using `FOTAConfig_t`, allowing more complex configurations
 
 esp32FOTA FOTA;
 
+const char* manifest_url = "http://server/fota/fota.json";
+const char* fota_name = "esp32-fota-http";
+
 // CryptoFileAsset *MyRootCA = new CryptoFileAsset( "/root_ca.pem", &SPIFFS );
 // CryptoFileAsset *MyRSAKey = new CryptoFileAsset( "/rsa_key.pub", &SD );
 
@@ -206,8 +211,8 @@ void setup()
 
   {
     auto cfg = FOTA.getConfig();
-    cfg.name          = "esp32-fota-http";
-    cfg.manifest_url  = "http://server/fota/fota.json";
+    cfg.name          = fota_name;
+    cfg.manifest_url  = manifest_url;
     cfg.sem           = SemverClass( 1, 0, 0 ); // major, minor, patch
     cfg.check_sig     = false; // verify signed firmware with rsa public key
     cfg.unsafe        = true; // disable certificate check when using TLS
@@ -336,10 +341,13 @@ CryptoFileAsset *MyPubKey = new CryptoFileAsset("RSA Key", "/rsa_key.pub", &SD);
 Then later in the `setup()`:
 
 ```C++
+
+const char* manifest_url = "http://server/fota/fota.json";
+
 void setup()
 {
   // (...)
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   esp32FOTA.setRootCA( MyRootCA );
   esp32FOTA.setPubKey( MyPubKey );
 }

examples/HTTP/HTTP.ino

@@ -24,6 +24,8 @@ const char *password = "";
 // esp32fota esp32fota("<Type of Firme for this device>", <this version>, <validate signature>);
 esp32FOTA esp32FOTA("esp32-fota-http", 1, false);
 
+const char* manifest_url = "http://server/fota/fota.json";
+
 void setup_wifi()
 {
   delay(10);
@@ -44,7 +46,7 @@ void setup_wifi()
 
 void setup()
 {
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   Serial.begin(115200);
   setup_wifi();
 }

examples/HTTP/HTTPS.ino

@@ -30,6 +30,7 @@ const char *password = "";
 
 // esp32fota esp32fota("<Type of Firme for this device>", <this version>, <validate signature>);
 esp32FOTA esp32FOTA("esp32-fota-http", 1, false);
+const char* manifest_url = "http://server/fota/fota.json";
 
 void setup_wifi()
 {
@@ -54,7 +55,7 @@ void setup()
   // Provide spiffs with root_ca.pem to validate server certificate
   SPIFFS.begin(true);
 
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   Serial.begin(115200);
   setup_wifi();
 }

examples/HTTP/HTTPS_without_root_cert.ino

@@ -1,12 +1,12 @@
 /**
    esp32 firmware OTA
-   
+
    Purpose: Perform an OTA update from a bin located on a webserver (HTTPS) without having a root cert
 
    Setup:
    Step 1 : Set your WiFi (ssid & password)
    Step 2 : set esp32fota()
-   
+
    Upload:
    Step 1 : Menu > Sketch > Export Compiled Library. The bin file will be saved in the sketch folder (Menu > Sketch > Show Sketch folder)
    Step 2 : Upload it to your webserver
@@ -29,6 +29,7 @@ const char *password = "";
 
 // esp32fota esp32fota("<Type of Firmware for this device>", <this version>, <validate signature>, <allow insecure https>);
 esp32FOTA esp32FOTA("esp32-fota-http", 1, false, true);
+const char* manifest_url = "http://server/fota/fota.json";
 
 void setup_wifi()
 {
@@ -50,8 +51,8 @@ void setup_wifi()
 
 void setup()
 {
-  
-  esp32FOTA.checkURL = "https://server/fota/fota.json";
+
+  esp32FOTA.checkURL = manifest_url;
   Serial.begin(115200);
   setup_wifi();
 }

examples/HTTP/HTTP_signature_check.ino

@@ -28,6 +28,8 @@ const char *password = "";
 // esp32fota esp32fota("<Type of Firme for this device>", <this version>, <validate signature>);
 esp32FOTA esp32FOTA("esp32-fota-http", 1, true);
 
+const char* manifest_url = "http://server/fota/fota.json";
+
 void setup_wifi()
 {
   delay(10);
@@ -51,7 +53,7 @@ void setup_wifi()
 
 void setup()
 {
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   Serial.begin(115200);
   setup_wifi();
 }

examples/forceUpdate/forceUpdate.ino

@@ -24,9 +24,11 @@ const char *password = "";
 // esp32fota esp32fota("<Type of Firmware for this device>", <this version>, <validate signature>);
 esp32FOTA esp32FOTA("esp32-fota-http", 1, false);
 
+const char* manifest_url = "http://server/fota/fota.json";
+
 void setup()
 {
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   Serial.begin(115200);
   setup_wifi();
 }

examples/withDeviceID/withDeviceID.ino

@@ -23,13 +23,14 @@ const char *password = "";
 
 // esp32fota esp32fota("<Type of Firme for this device>", <this version>, <validate signature>);
 esp32FOTA FOTA("esp32-fota-http", 1, false);
+const char* manifest_url = "http://server/fota/fota.json";
 
 void setup()
 {
   Serial.begin(115200);
   setup_wifi();
 
-  esp32FOTA.setManifestURL( "http://server/fota/fota.json" );
+  esp32FOTA.setManifestURL( manifest_url );
   esp32FOTA.useDeviceId( true );
 }