v1.0.4

### New Releases v1.0.4

1. Add support to SAM DUE
2. Reduce html and code size for faster Config Portal response. 
3. Enhance GUI.
4. Config Portal AP SSID and Password will use 4 bytes of hardware unique macAddress, only for Teensy.

src/BlynkSimpleShieldEsp8266_Teensy_WM.h

@@ -935,6 +935,22 @@ class BlynkWifi
       }   // if (server)
     }
 
+    #if 0
+    uint8_t macTeensy[6];
+
+    static void teensyMAC(uint8_t *mac)
+    {
+      uint32_t m1 = HW_OCOTP_MAC1;
+      uint32_t m2 = HW_OCOTP_MAC0;
+      mac[0] = m1 >> 8;
+      mac[1] = m1 >> 0;
+      mac[2] = m2 >> 24;
+      mac[3] = m2 >> 16;
+      mac[4] = m2 >> 8;
+      mac[5] = m2 >> 0;
+    } 
+    #endif
+
     void startConfigurationMode()
     {
 #define CONFIG_TIMEOUT			60000L
@@ -945,11 +961,11 @@ class BlynkWifi
 
       if ( (portal_ssid == "") || portal_pass == "" )
       {
-        String randomNum = String(random(0xFFFFFF), HEX);
-        randomNum.toUpperCase();
-
-        portal_ssid = "Teensy4_" + randomNum;
-        portal_pass = "MyTeensy4_" + randomNum;
+        String hardwareID = String(HW_OCOTP_MAC0, HEX);
+        hardwareID.toUpperCase();
+        
+        portal_ssid = "ESP_AT_" + hardwareID;
+        portal_pass = "MyESP_AT_" + hardwareID;
       }
 
       BLYNK_LOG6(BLYNK_F("stConf:SSID="), portal_ssid, BLYNK_F(",PW="), portal_pass, BLYNK_F(",IP="), portal_apIP);