From 97e0ed73937fe2922d4685a6bdb7681d439dee44 Mon Sep 17 00:00:00 2001
From: InsanityAutomation <d.menzel@insanityautomation.com>
Date: Wed, 31 May 2023 23:32:39 -0400
Subject: [PATCH] fix touch ui for stm32

---
 Marlin/Configuration_adv.h                    |  2 +-
 .../src/lcd/extui/ia_dwin/Creality_DWIN.cpp   | 43 +++++++++++--------
 2 files changed, 25 insertions(+), 20 deletions(-)

diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 387d4a9389..09fd7c0c26 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -1974,7 +1974,7 @@
 
   #define DGUS_RX_BUFFER_SIZE 128
   #define DGUS_TX_BUFFER_SIZE 48
-  #if ENABLED(FORCE10SPRODISPLAY)
+  #if ENABLED(FORCE10SPRODISPLAY) && DISABLED(Creality422, Creality427)
     #define SERIAL_STATS_RX_BUFFER_OVERRUNS  // Fix Rx overrun situation (Currently only for AVR)
   #endif
   #define DGUS_UPDATE_INTERVAL_MS  500    // (ms) Interval between automatic screen updates
diff --git a/Marlin/src/lcd/extui/ia_dwin/Creality_DWIN.cpp b/Marlin/src/lcd/extui/ia_dwin/Creality_DWIN.cpp
index b55ac6ad47..152f79e594 100644
--- a/Marlin/src/lcd/extui/ia_dwin/Creality_DWIN.cpp
+++ b/Marlin/src/lcd/extui/ia_dwin/Creality_DWIN.cpp
@@ -599,7 +599,7 @@ RTSSHOW::RTSSHOW()
 int RTSSHOW::RTS_RecData()
 {
   uint8_t receivedbyte;
-
+    #if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
     if (!DWIN_SERIAL.available() && DWIN_SERIAL.buffer_overruns()) {
       // Overrun, but reset the flag only when the buffer is empty
       // We want to extract as many as valid datagrams possible...
@@ -608,6 +608,7 @@ int RTSSHOW::RTS_RecData()
       //DWIN_SERIAL.reset_rx_overun();
       DWIN_SERIAL.flush();
     }
+    #endif
 
 
   while (DWIN_SERIAL.available()) {
@@ -777,16 +778,18 @@ void RTSSHOW::RTS_SndData(const char *str, unsigned long addr, unsigned char cmd
     uint8_t expected_tx = 6 + len; // 6 bytes header + payload.
     const millis_t try_until = ExtUI::safe_millis() + 1000;
 
-    while (expected_tx > DWIN_SERIAL.get_tx_buffer_free()) {
-      if (ELAPSED(ExtUI::safe_millis(), try_until)) return; // Stop trying after 1 second
+    #if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
+      while (expected_tx > DWIN_SERIAL.get_tx_buffer_free()) {
+        if (ELAPSED(ExtUI::safe_millis(), try_until)) return; // Stop trying after 1 second
 
-      #ifdef ARDUINO_ARCH_STM32
-        DWIN_SERIAL.flush();
-      #else
-        DWIN_SERIAL.flushTX();
-      #endif
-      delay(50);
-    }
+        #ifdef ARDUINO_ARCH_STM32
+          DWIN_SERIAL.flush();
+        #else
+          DWIN_SERIAL.flushTX();
+        #endif
+        delay(50);
+      }
+    #endif
 
     int dataRec2;
     do { dataRec2 = rtscheck.RTS_RecData(); } while (dataRec2 > 0); // Since OS4 returns an ack on an 82 command, receive and purge it now
@@ -907,16 +910,18 @@ void RTSSHOW::WriteVariable(uint16_t adr, const void* values, uint8_t valueslen,
   uint8_t expected_tx = 6 + valueslen; // 6 bytes header + payload.
     const millis_t try_until = ExtUI::safe_millis() + 1000;
 
-    while (expected_tx > DWIN_SERIAL.get_tx_buffer_free()) {
-      if (ELAPSED(ExtUI::safe_millis(), try_until)) return; // Stop trying after 1 second
+    #if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
+      while (expected_tx > DWIN_SERIAL.get_tx_buffer_free()) {
+        if (ELAPSED(ExtUI::safe_millis(), try_until)) return; // Stop trying after 1 second
 
-      #ifdef ARDUINO_ARCH_STM32
-        DWIN_SERIAL.flush();
-      #else
-        DWIN_SERIAL.flushTX();
-      #endif
-      delay(50);
-    }
+        #ifdef ARDUINO_ARCH_STM32
+          DWIN_SERIAL.flush();
+        #else
+          DWIN_SERIAL.flushTX();
+        #endif
+        delay(50);
+      }
+    #endif
 
   int dataRec2;
   do { dataRec2 = rtscheck.RTS_RecData(); } while (dataRec2 > 0); // Since OS4 returns an ack on an 82 command, receive and purge it now