Merge upstream changes from Marlin 2.1.2

Marlin/src/HAL/ESP32/u8g_esp32_spi.cpp

@@ -32,6 +32,13 @@
 #include "HAL.h"
 #include "SPI.h"
 
+#if ENABLED(SDSUPPORT)
+  #include "../../sd/cardreader.h"
+  #if ENABLED(ESP3D_WIFISUPPORT)
+    #include "sd_ESP32.h"
+  #endif
+#endif
+
 static SPISettings spiConfig;
 
 
@@ -45,6 +52,11 @@ static SPISettings spiConfig;
 
 uint8_t u8g_eps_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
   static uint8_t msgInitCount = 2; // Ignore all messages until 2nd U8G_COM_MSG_INIT
+
+  #if ENABLED(PAUSE_LCD_FOR_BUSY_SD)
+    if (card.flag.saving || card.flag.logging || TERN0(ESP3D_WIFISUPPORT, sd_busy_lock == true)) return 0;
+  #endif
+
   if (msgInitCount) {
     if (msg == U8G_COM_MSG_INIT) msgInitCount--;
     if (msgInitCount) return -1;