factory reset function

src/espmega_iot_core.cpp

@@ -123,6 +123,7 @@ void setup()
   lcd_send_stop_bit();
   lcd_init();
   lcd_begin();
+  check_boot_reset();
 #ifdef ENABLE_EXTERNAL_LCD
   Serial2.print("rest");
   Serial2.write(0xFF);
@@ -1191,4 +1192,36 @@ void set_mqtt_useauth(bool use_auth)
 {
   MQTT_USE_AUTH = use_auth;
   ESPMega_FRAM.write8(EEPROM_ADDRESS_MQTT_USEAUTH, MQTT_USE_AUTH);
+}
+
+void factory_reset() {
+  for(int i=5;i>0;i--) {
+    if(digitalRead(2)==HIGH) {
+      lcd_send_command("boot_state.txt=\"Factory Reset Canceled, Restarting\"");
+      delay(5000);
+      ESP.restart();
+    }
+    Serial.printf("boot_state.txt=\"Factory Reset in %d\"",i);
+    lcd_send_stop_bit();
+    delay(1000);
+  } 
+  lcd_send_command("boot_state.txt=\"Factory Reseting . . .\"");
+  // Format FRAM
+  for(int i=0;i<32768;i++) {
+    ESPMega_FRAM.write8(i,0);
+  }
+  // Load Default Values
+  set_ip("192.168.0.10");
+  set_gw("192.168.0.1");
+  // Reboot
+  lcd_send_stop_bit();
+  lcd_send_command("boot_state.txt=\"Factory Reset OK. Release Button.\"");
+  delay(3000);
+  ESP.restart();
+}
+void check_boot_reset() {
+  pinMode(2, INPUT_PULLUP);
+  if(digitalRead(2)==LOW) {
+    factory_reset();
+  }
 }

src/espmega_iot_core.hpp

@@ -104,4 +104,7 @@ void eeprom_mqtt_password_retrieve();
 void set_mqtt_username(String username);
 void set_mqtt_password(String password);
 void eeprom_mqtt_useauth_retrieve();
-void set_mqtt_useauth(bool use_auth);
+void set_mqtt_useauth(bool use_auth);
+
+void factory_reset();
+void check_boot_reset();