Some ESP32 patches (#16297)

Marlin/src/HAL/HAL_ESP32/WebSocketSerial.h

 
 #include <Stream.h>
 
-#ifndef RX_BUFFER_SIZE
-  #define RX_BUFFER_SIZE 128
-#endif
 #ifndef TX_BUFFER_SIZE
   #define TX_BUFFER_SIZE 32
 #endif
-#if TX_BUFFER_SIZE <= 0
-  #error "TX_BUFFER_SIZE is required for the WebSocket."
+#if ENABLED(WIFISUPPORT)
+  #ifndef RX_BUFFER_SIZE
+    #define RX_BUFFER_SIZE 128
+  #endif
+  #if TX_BUFFER_SIZE <= 0
+    #error "TX_BUFFER_SIZE is required for the WebSocket."
+  #endif
 #endif
 
 typedef uint16_t ring_buffer_pos_t;

Marlin/src/lcd/dogm/u8g_dev_st7920_128x64_HAL.cpp

 U8G_PB_DEV(u8g_dev_st7920_128x64_HAL_hw_spi, LCD_PIXEL_WIDTH, LCD_PIXEL_HEIGHT, PAGE_HEIGHT, u8g_dev_st7920_128x64_HAL_fn, U8G_COM_ST7920_HAL_HW_SPI);
 u8g_dev_t u8g_dev_st7920_128x64_HAL_4x_hw_spi = { u8g_dev_st7920_128x64_HAL_4x_fn, &u8g_dev_st7920_128x64_HAL_4x_pb, U8G_COM_ST7920_HAL_HW_SPI };
 
-#if NONE(__AVR__, ARDUINO_ARCH_STM32) || defined(U8G_HAL_LINKS)
+#if NONE(__AVR__, ARDUINO_ARCH_STM32, ARDUINO_ARCH_ESP32) || defined(U8G_HAL_LINKS)
   // Also use this device for HAL version of rrd class. This results in the same device being used
   // for the ST7920 for HAL systems no matter what is selected in ultralcd_impl_DOGM.h.
   u8g_dev_t u8g_dev_st7920_128x64_rrd_sw_spi = { u8g_dev_st7920_128x64_HAL_4x_fn, &u8g_dev_st7920_128x64_HAL_4x_pb, U8G_COM_ST7920_HAL_SW_SPI };

Marlin/src/lcd/dogm/ultralcd_st7920_u8glib_rrd_AVR.cpp

 
 #include "../../inc/MarlinConfigPre.h"
 
-#if !defined(U8G_HAL_LINKS) && ANY(__AVR__, ARDUINO_ARCH_STM32)
+#if !defined(U8G_HAL_LINKS) && ANY(__AVR__, ARDUINO_ARCH_STM32, ARDUINO_ARCH_ESP32)
 
 #include "../../inc/MarlinConfig.h"
 

Marlin/src/module/stepper.cpp

       (axis == CORE_AXIS_2
         ? CORESIGN(count_position[CORE_AXIS_1] - count_position[CORE_AXIS_2])
         : count_position[CORE_AXIS_1] + count_position[CORE_AXIS_2]
-      ) * 0.5f
+      ) * double(0.5)
     #else // !IS_CORE
       count_position[axis]
     #endif

platformio.ini

 platform      = espressif32
 board         = esp32dev
 build_flags   = ${common.build_flags} -DCORE_DEBUG_LEVEL=0
-lib_deps      =
+lib_deps      = ${common.lib_deps}
   AsyncTCP=https://github.com/me-no-dev/AsyncTCP/archive/master.zip
   ESPAsyncWebServer=https://github.com/me-no-dev/ESPAsyncWebServer/archive/master.zip
 lib_ignore    = LiquidCrystal, LiquidTWI2, SailfishLCD, SailfishRGB_LED