Updated platform to pioarduino, since default platform is old and deprecated.

This solved the compile issues and enabled use of VScode for development. Hint from this post on github: https://github.com/espressif/arduino-esp32/issues/10721

src/CMakeLists.txt

@@ -0,0 +1,6 @@
+# This file was automatically generated for projects
+# without default 'CMakeLists.txt' file.
+
+FILE(GLOB_RECURSE app_sources ${CMAKE_SOURCE_DIR}/src/*.*)
+
+idf_component_register(SRCS ${app_sources})

src/WS_GPIO.cpp

@@ -31,7 +31,7 @@ void GPIO_Init() {
 
 /*************************************************************  RGB  *************************************************************/
 void RGB_Light(uint8_t red_val, uint8_t green_val, uint8_t blue_val) {
-  neopixelWrite(GPIO_PIN_RGB, green_val, red_val, blue_val);  // RGB color adjustment
+  rgbLedWrite(GPIO_PIN_RGB, green_val, red_val, blue_val);  // RGB color adjustment
 }
 RGB_Indicate RGB_indicate[RGB_Indicate_Number];
 static uint8_t RGB_indicate_Num = 0;

src/WS_MQTT.cpp

@@ -14,8 +14,8 @@ char sub[] = MQTT_Sub;      // MQTT subscribe to topics
 WiFiClient espClient;       //MQTT initializes the contents
 PubSubClient client(espClient);
 
-StaticJsonDocument<400> sendJson;
-StaticJsonDocument<400> readJson;
+JsonDocument sendJson;
+JsonDocument readJson;
 unsigned long lastUpdateTime = 0;
 char msg[MSG_BUFFER_SIZE];
 bool WIFI_Connection = 0;