use gzipped file for web ui

.gitignore

@@ -3,3 +3,4 @@
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/ipch
+web/*gz

extra_script.py

@@ -0,0 +1,14 @@
+print("running extra...")
+import gzip
+import shutil
+FILES=['web/index.html']
+
+def compressFile(inFile):
+    outfile=inFile+".gz"
+    with open(inFile, 'rb') as f_in:
+        with gzip.open(outfile, 'wb') as f_out:
+            shutil.copyfileobj(f_in, f_out)
+
+for f in FILES:
+    print("compressing %s"%f)
+    compressFile(f)

platformio.ini

@@ -16,8 +16,9 @@ lib_deps =
 	ttlappalainen/NMEA2000_esp32 @ ^1.0.3
 	ttlappalainen/NMEA0183 @ ^1.7.1
 	bblanchon/ArduinoJson@^6.18.5
-board_build.embed_txtfiles=
-	web/index.html	
+board_build.embed_files=
+	web/index.html.gz
+extra_scripts= extra_script.py		
 
 [env:m5stack-atom]
 board = m5stack-atom

src/main.cpp

@@ -12,7 +12,7 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#define VERSION "0.0.2"
+#define VERSION "0.0.3"
 
 //board specific pins
 #ifdef BOARD_M5ATOM
@@ -144,11 +144,14 @@ void debug_log(char* str) {
 
 #define JSON_OK "{\"status\":\"OK\"}"
 //embedded files
-extern const char indexFile[] asm("_binary_web_index_html_start"); 
+extern const uint8_t indexFile[] asm("_binary_web_index_html_gz_start"); 
+extern const uint8_t indexFileEnd[] asm("_binary_web_index_html_gz_end"); 
+extern const uint8_t indexFileLen[] asm("_binary_web_index_html_gz_size");
 
 void web_index()    // Wenn "http://<ip address>/" aufgerufen wurde
 {
-  webserver.send(200, "text/html", indexFile);  //dann Index Webseite senden
+  webserver.sendHeader(F("Content-Encoding"), F("gzip"));
+  webserver.send_P(200, "text/html", (const char *)indexFile,(int)indexFileLen);  //dann Index Webseite senden
 }
 
 void js_reset()      // Wenn "http://<ip address>/gauge.min.js" aufgerufen wurde
@@ -462,11 +465,10 @@ void handle_json() {
 }
 
 
-
+long lastLog=millis();
 void loop() {
   unsigned int size;
   int wifi_retry;
-
   webserver.handleClient();
   gwWifi.loop();
   handle_json();