LVGL and Classic UI for STM32 (#20552)

Marlin/src/HAL/STM32/HAL_SPI.cpp

       SPI.setMISO(MISO_PIN);
       SPI.setMOSI(MOSI_PIN);
       SPI.setSCLK(SCK_PIN);
-      SPI.setSSEL(SS_PIN);
     #endif
 
     SPI.begin();

Marlin/src/HAL/STM32/MarlinSPI.cpp

     _dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
   }
   #ifdef STM32F4xx
-    _dmaHandle.Init.Channel = DMA_CHANNEL_3;
     _dmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
   #endif
 
         _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel3 : DMA1_Channel2;
       #elif defined(STM32F4xx)
         __HAL_RCC_DMA2_CLK_ENABLE();
-        _dmaHandle.Instance = DMA2_Stream3;
+        _dmaHandle.Init.Channel = DMA_CHANNEL_3;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Stream3 : DMA2_Stream0;
       #endif
     }
   #endif
         __HAL_RCC_DMA1_CLK_ENABLE();
         _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel5 : DMA1_Channel4;
       #elif defined(STM32F4xx)
-        //TODO: f4 dma config
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Init.Channel = DMA_CHANNEL_0;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream4 : DMA1_Stream3;
       #endif
     }
   #endif
         __HAL_RCC_DMA2_CLK_ENABLE();
         _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Channel2 : DMA2_Channel1;
       #elif defined(STM32F4xx)
-        //TODO: f4 dma config
+        __HAL_RCC_DMA1_CLK_ENABLE();
+        _dmaHandle.Init.Channel = DMA_CHANNEL_0;
+        _dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream5 : DMA1_Stream2;
       #endif
     }
   #endif

Marlin/src/HAL/STM32/tft/tft_fsmc.cpp

 }
 
 bool TFT_FSMC::isBusy() {
-  if (__IS_DMA_ENABLED(&DMAtx))
+  #if defined(STM32F1xx)
+    volatile bool dmaEnabled = (DMAtx.Instance->CCR & DMA_CCR_EN) != RESET;
+  #elif defined(STM32F4xx)
+    volatile bool dmaEnabled = DMAtx.Instance->CR & DMA_SxCR_EN;
+  #endif
+  if (dmaEnabled) {
     if (__HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TC_FLAG_INDEX(&DMAtx)) != 0 || __HAL_DMA_GET_FLAG(&DMAtx, __HAL_DMA_GET_TE_FLAG_INDEX(&DMAtx)) != 0)
       Abort();
-  return __IS_DMA_ENABLED(&DMAtx);
+  }
+  else
+    Abort();
+  return dmaEnabled;
 }
 
 void TFT_FSMC::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
   DMAtx.Init.PeriphInc = MemoryIncrease;
   HAL_DMA_Init(&DMAtx);
-
-  __HAL_DMA_CLEAR_FLAG(&DMAtx, __HAL_DMA_GET_TC_FLAG_INDEX(&DMAtx));
-  __HAL_DMA_CLEAR_FLAG(&DMAtx, __HAL_DMA_GET_TE_FLAG_INDEX(&DMAtx));
-
-  #ifdef STM32F1xx
-    DMAtx.Instance->CNDTR = Count;
-    DMAtx.Instance->CPAR = (uint32_t)Data;
-    DMAtx.Instance->CMAR = (uint32_t)&(LCD->RAM);
-  #elif defined(STM32F4xx)
-    DMAtx.Instance->NDTR = Count;
-    DMAtx.Instance->PAR = (uint32_t)Data;
-    DMAtx.Instance->M0AR = (uint32_t)&(LCD->RAM);
-  #endif
-  __HAL_DMA_ENABLE(&DMAtx);
+  DataTransferBegin();
+  HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(LCD->RAM), Count);
+  HAL_DMA_PollForTransfer(&DMAtx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+  Abort();
 }
 
 #endif // HAS_FSMC_TFT

Marlin/src/HAL/STM32/tft/tft_fsmc.h

 
 #ifdef STM32F1xx
   #include "stm32f1xx_hal.h"
-  #define __IS_DMA_ENABLED(__HANDLE__)  ((__HANDLE__)->Instance->CCR & DMA_CCR_EN)
 #elif defined(STM32F4xx)
   #include "stm32f4xx_hal.h"
-  #define __IS_DMA_ENABLED(__HANDLE__)  ((__HANDLE__)->Instance->CR & DMA_SxCR_EN)
 #else
   #error "FSMC TFT is currently only supported on STM32F1 and STM32F4 hardware."
 #endif
 
     static void WriteSequence(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_PINC_ENABLE, Data, Count); }
     static void WriteMultiple(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_PINC_DISABLE, &Data, Count); }
+    static void WriteMultiple(uint16_t Color, uint32_t Count) {
+      static uint16_t Data; Data = Color;
+      while (Count > 0) {
+        TransmitDMA(DMA_MINC_DISABLE, &Data, Count > 0xFFFF ? 0xFFFF : Count);
+        Count = Count > 0xFFFF ? Count - 0xFFFF : 0;
+      }
+    }
 };
 
 

Marlin/src/HAL/STM32/tft/tft_spi.cpp

       #elif defined(STM32F4xx)
         __HAL_RCC_DMA1_CLK_ENABLE();
         DMAtx.Instance = DMA1_Stream4;
-        DMAtx.Init.Channel = DMA_CHANNEL_4;
+        DMAtx.Init.Channel = DMA_CHANNEL_0;
       #endif
     }
   #endif
       #elif defined(STM32F4xx)
         __HAL_RCC_DMA1_CLK_ENABLE();
         DMAtx.Instance = DMA1_Stream5;
-        DMAtx.Init.Channel = DMA_CHANNEL_5;
+        DMAtx.Init.Channel = DMA_CHANNEL_0;
       #endif
     }
   #endif
 }
 
 void TFT_SPI::Abort() {
+  // Wait for any running spi
+  while ((SPIx.Instance->SR & SPI_FLAG_TXE) != SPI_FLAG_TXE) {}
+  while ((SPIx.Instance->SR & SPI_FLAG_BSY) == SPI_FLAG_BSY) {}
   // First, abort any running dma
   HAL_DMA_Abort(&DMAtx);
   // DeInit objects
   __HAL_SPI_ENABLE(&SPIx);
 
   SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   /* Enable Tx DMA Request */
+
+  HAL_DMA_PollForTransfer(&DMAtx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
+  Abort();
 }
 
 #endif // HAS_SPI_TFT

Marlin/src/HAL/STM32/tft/tft_spi.h

 
   static void WriteSequence(uint16_t *Data, uint16_t Count) { TransmitDMA(DMA_MINC_ENABLE, Data, Count); }
   static void WriteMultiple(uint16_t Color, uint16_t Count) { static uint16_t Data; Data = Color; TransmitDMA(DMA_MINC_DISABLE, &Data, Count); }
+  static void WriteMultiple(uint16_t Color, uint32_t Count) {
+    static uint16_t Data; Data = Color;
+    while (Count > 0) {
+      TransmitDMA(DMA_MINC_DISABLE, &Data, Count > 0xFFFF ? 0xFFFF : Count);
+      Count = Count > 0xFFFF ? Count - 0xFFFF : 0;
+    }
+  }
 };

Marlin/src/HAL/STM32/tft/xpt2046.cpp

 
 #include "../../../inc/MarlinConfig.h"
 
-#if HAS_TFT_XPT2046
+#if HAS_TFT_XPT2046 || HAS_TOUCH_BUTTONS
 
 #include "xpt2046.h"
 #include "pinconfig.h"
 uint16_t delta(uint16_t a, uint16_t b) { return a > b ? a - b : b - a; }
 
 SPI_HandleTypeDef XPT2046::SPIx;
-DMA_HandleTypeDef XPT2046::DMAtx;
 
 void XPT2046::Init() {
   SPI_TypeDef *spiInstance;
       if (SPIx.Instance == SPI1) {
         __HAL_RCC_SPI1_CLK_ENABLE();
         SPIx.Init.BaudRatePrescaler  = SPI_BAUDRATEPRESCALER_16;
-        #ifdef STM32F1xx
-          DMAtx.Instance = DMA1_Channel3;
-        #elif defined(STM32F4xx)
-          DMAtx.Instance = DMA2_Stream3; // DMA2_Stream5
-        #endif
-        //SERIAL_ECHO_MSG(" Touch Screen on SPI1");
       }
     #endif
     #ifdef SPI2_BASE
       if (SPIx.Instance == SPI2) {
         __HAL_RCC_SPI2_CLK_ENABLE();
-        #ifdef STM32F1xx
-          DMAtx.Instance = DMA1_Channel5;
-        #elif defined(STM32F4xx)
-          DMAtx.Instance = DMA1_Stream4;
-        #endif
-        //SERIAL_ECHO_MSG(" Touch Screen on SPI2");
       }
     #endif
     #ifdef SPI3_BASE
       if (SPIx.Instance == SPI3) {
         __HAL_RCC_SPI3_CLK_ENABLE();
-        #ifdef STM32F1xx
-          DMAtx.Instance = DMA2_Channel2;
-        #elif defined(STM32F4xx)
-          DMAtx.Instance = DMA1_Stream5;  // DMA1_Stream7
-        #endif
-        //SERIAL_ECHO_MSG(" Touch Screen on SPI3");
       }
     #endif
   }
     SET_INPUT(TOUCH_MISO_PIN);
     SET_OUTPUT(TOUCH_MOSI_PIN);
     SET_OUTPUT(TOUCH_SCK_PIN);
-    //SERIAL_ECHO_MSG(" Touch Screen on Software SPI");
   }
 
   getRawData(XPT2046_Z1);

Marlin/src/HAL/STM32/tft/xpt2046.h

 
 #ifdef STM32F1xx
   #include <stm32f1xx_hal.h>
-  #define __IS_DMA_ENABLED(__HANDLE__)  ((__HANDLE__)->Instance->CCR & DMA_CCR_EN)
 #elif defined(STM32F4xx)
   #include <stm32f4xx_hal.h>
-  #define __IS_DMA_ENABLED(__HANDLE__)  ((__HANDLE__)->Instance->CR & DMA_SxCR_EN)
 #endif
 
 #include "../../../inc/MarlinConfig.h"
 class XPT2046 {
 private:
   static SPI_HandleTypeDef SPIx;
-  static DMA_HandleTypeDef DMAtx;
 
-  static bool isBusy() { return SPIx.Instance ? __IS_DMA_ENABLED(&DMAtx) : false; }
+  static bool isBusy() { return false; }
 
   static uint16_t getRawData(const XPTCoordinate coordinate);
   static bool isTouched();

Marlin/src/gcode/calibrate/G34.cpp

   if (!all_axes_trusted()) home_all_axes();
 
   TERN_(HAS_LEVELING, TEMPORARY_BED_LEVELING_STATE(false));
-  
+
   SET_SOFT_ENDSTOP_LOOSE(true);
   TemporaryGlobalEndstopsState unlock_z(false);
 

Marlin/src/inc/Conditionals_LCD.h

 // This emulated DOGM has 'touch/xpt2046', not 'tft/xpt2046'
 #if ENABLED(TOUCH_SCREEN) && !HAS_GRAPHICAL_TFT
   #undef TOUCH_SCREEN
-  #if !HAS_TFT_LVGL_UI
+  #if ENABLED(TFT_CLASSIC_UI)
     #define HAS_TOUCH_BUTTONS 1
   #endif
 #endif

Marlin/src/inc/SanityCheck.h

 /**
  * Touch Buttons
  */
-#if ENABLED(TOUCH_SCREEN)
+#if ENABLED(TOUCH_SCREEN) && DISABLED(TOUCH_SCREEN_CALIBRATION)
   #ifndef TOUCH_CALIBRATION_X
     #error "TOUCH_CALIBRATION_X must be defined with TOUCH_SCREEN."
   #endif

Marlin/src/lcd/dogm/u8g_dev_tft_upscale_from_128x64.cpp

   }
 #endif // HAS_TOUCH_BUTTONS
 
+static uint8_t msgInitCount = 2; // Ignore all messages until 2nd U8G_COM_MSG_INIT
+
 uint8_t u8g_dev_tft_320x240_upscale_from_128x64_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg) {
   u8g_pb_t *pb = (u8g_pb_t *)(dev->dev_mem);
 
   switch (msg) {
     case U8G_DEV_MSG_INIT:
       dev->com_fn(u8g, U8G_COM_MSG_INIT, U8G_SPI_CLK_CYCLE_NONE, nullptr);
-      tftio.Init();
-      tftio.InitTFT();
-      TERN_(TOUCH_SCREEN_CALIBRATION, touch_calibration.calibration_reset());
 
       if (preinit) {
         preinit = false;
         return u8g_dev_pb8v1_base_fn(u8g, dev, msg, arg);
       }
 
+      if (msgInitCount) return -1;
+      tftio.Init();
+      tftio.InitTFT();
+      TERN_(TOUCH_SCREEN_CALIBRATION, touch_calibration.calibration_reset());
+
       // Clear Screen
       setWindow(u8g, dev, 0, 0, (TFT_WIDTH) - 1, (TFT_HEIGHT) - 1);
       #if HAS_LCD_IO
-        tftio.WriteMultiple(TFT_MARLINBG_COLOR, uint32_t(TFT_WIDTH) * (TFT_HEIGHT));
+        tftio.WriteMultiple(TFT_MARLINBG_COLOR, (TFT_WIDTH) * (TFT_HEIGHT));
       #else
         memset2(buffer, TFT_MARLINBG_COLOR, (TFT_WIDTH) / 2);
         for (uint16_t i = 0; i < (TFT_HEIGHT) * sq(GRAPHICAL_TFT_UPSCALE); i++)
   return u8g_dev_pb8v1_base_fn(u8g, dev, msg, arg);
 }
 
-static uint8_t msgInitCount = 2; // Ignore all messages until 2nd U8G_COM_MSG_INIT
-
 uint8_t u8g_com_hal_tft_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
   if (msgInitCount) {
     if (msg == U8G_COM_MSG_INIT) msgInitCount--;
   switch (msg) {
     case U8G_COM_MSG_STOP: break;
     case U8G_COM_MSG_INIT:
-      u8g_SetPIOutput(u8g, U8G_PI_RESET);
-      u8g_Delay(50);
       isCommand = 0;
       break;
 
       break;
 
     case U8G_COM_MSG_RESET:
-      u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
       break;
 
     case U8G_COM_MSG_WRITE_BYTE:

Marlin/src/lcd/tft/tft.h

 
 #include "../../inc/MarlinConfig.h"
 
-#if TFT_INTERFACE_FSMC_8BIT
+#if ENABLED(TFT_INTERFACE_FSMC_8BIT)
   // When we have a 8 bit interface, we need to invert the bytes of the color
   #define ENDIAN_COLOR(C) (((C) >> 8) | ((C) << 8))
 #else

Marlin/src/lcd/tft_io/tft_io.h

   static void write_esc_sequence(const uint16_t *Sequence);
 
   // Deletaged methods
-  inline static void Init() { io.Init(); };
+  inline static void Init() { io.Init(); io.Abort(); };
   inline static bool isBusy() { return io.isBusy(); };
   inline static void Abort() { io.Abort(); };
   inline static uint32_t GetID() { return io.GetID(); };

Marlin/src/lcd/touch/touch_buttons.cpp

 #endif
 
 #include "../marlinui.h" // For EN_C bit mask
+#include "../tft_io/tft_io.h"
 
 #define DOGM_AREA_LEFT   TFT_PIXEL_OFFSET_X
 #define DOGM_AREA_TOP    TFT_PIXEL_OFFSET_Y
   #ifdef HAS_WIRED_LCD
     int16_t x, y;
 
-    if (!touchIO.getRawPoint(&x, &y)) return 0;
+    const bool is_touched = (TERN(TOUCH_SCREEN_CALIBRATION, touch_calibration.calibration.orientation, TOUCH_ORIENTATION) == TOUCH_PORTRAIT ? touchIO.getRawPoint(&y, &x) : touchIO.getRawPoint(&x, &y));
+    if (!is_touched) return 0;
 
     #if ENABLED(TOUCH_SCREEN_CALIBRATION)
       const calibrationState state = touch_calibration.get_calibration_state();

Marlin/src/pins/stm32f4/pins_ANET_ET4.h

 #define TFT_RS_PIN                          PD13
 #define TFT_INTERFACE_FSMC_8BIT
 
+#define LCD_USE_DMA_FSMC                          // Use DMA transfers to send data to the TFT
+#define FSMC_CS_PIN                   TFT_CS_PIN
+#define FSMC_RS_PIN                   TFT_RS_PIN
+
 //
 // Touch Screen
 // https://ldm-systems.ru/f/doc/catalog/HY-TFT-2,8/XPT2046.pdf
 //
-#if ENABLED(TOUCH_SCREEN)
+#if NEED_TOUCH_PINS
   #define TOUCH_CS_PIN                      PB2
   #define TOUCH_SCK_PIN                     PB0
   #define TOUCH_MOSI_PIN                    PE5

Marlin/src/pins/stm32f4/pins_MKS_ROBIN_NANO_V3.h

 #define BOARD_INFO_NAME "MKS Robin Nano V3"
 
 // Avoid conflict with TIMER_TONE
-#define STEP_TIMER 13
+#define STEP_TIMER 10
 
 // Use one of these or SDCard-based Emulation will be used
 //#define SRAM_EEPROM_EMULATION                   // Use BackSRAM-based EEPROM emulation
  *                EXP1                                               EXP2
  */
 
-#if EITHER(TFT_480x320_SPI, TFT_LVGL_UI_SPI)
+#if ANY(TFT_COLOR_UI, TFT_LVGL_UI, TFT_CLASSIC_UI)
   #ifndef TOUCH_CALIBRATION_X
     #define TOUCH_CALIBRATION_X           -17253
   #endif
     #define BOARD_ST7920_DELAY_3    DELAY_NS(600)
 
   #endif // !MKS_MINI_12864
-
-#elif ENABLED(SPI_GRAPHICAL_TFT)
-  #define SPI_TFT_CS_PIN                    PD11
-  #define SPI_TFT_SCK_PIN                   PA5
-  #define SPI_TFT_MISO_PIN                  PA6
-  #define SPI_TFT_MOSI_PIN                  PA7
-  #define SPI_TFT_DC_PIN                    PD10
-  #define SPI_TFT_RST_PIN                   PC6
-
-  #define LCD_BACKLIGHT_PIN                 PD13
-
-  #define TOUCH_CS_PIN                      PE14  // SPI1_NSS
-  #define TOUCH_SCK_PIN                     PA5   // SPI1_SCK
-  #define TOUCH_MISO_PIN                    PA6   // SPI1_MISO
-  #define TOUCH_MOSI_PIN                    PA7   // SPI1_MOSI
-
-  #define BTN_EN1                           PE8
-  #define BTN_EN2                           PE11
-  #define BEEPER_PIN                        PC5
-  #define BTN_ENC                           PE13
 #endif // HAS_SPI_LCD
 
 #define HAS_OTG_USB_HOST_SUPPORT

Marlin/src/pins/stm32f4/pins_MKS_ROBIN_PRO_V2.h

 #define BOARD_INFO_NAME "MKS Robin PRO V2"
 
 // Avoid conflict with TIMER_TONE
-#define STEP_TIMER 13
+#define STEP_TIMER 10
 
 // Use one of these or SDCard-based Emulation will be used
 //#define SRAM_EEPROM_EMULATION                   // Use BackSRAM-based EEPROM emulation
 //
 // LCD / Controller
 #define SPI_FLASH
-// #define HAS_SPI_FLASH 1
+#define HAS_SPI_FLASH 1
 #define SPI_DEVICE                             2
 #define SPI_FLASH_SIZE                 0x1000000
 #if ENABLED(SPI_FLASH)
  *                EXP1                                               EXP2
  */
 
-#if EITHER(TFT_480x320_SPI, TFT_LVGL_UI_SPI)
+#if ANY(TFT_COLOR_UI, TFT_LVGL_UI, TFT_CLASSIC_UI)
   #ifndef TOUCH_CALIBRATION_X
     #define TOUCH_CALIBRATION_X           -17253
   #endif
     #endif
 
   #endif // !MKS_MINI_12864
-
-#elif ENABLED(SPI_GRAPHICAL_TFT)
-  #define SPI_TFT_CS_PIN                    PD11
-  #define SPI_TFT_SCK_PIN                   PA5
-  #define SPI_TFT_MISO_PIN                  PA6
-  #define SPI_TFT_MOSI_PIN                  PA7
-  #define SPI_TFT_DC_PIN                    PD10
-  #define SPI_TFT_RST_PIN                   PC6
-
-  #define LCD_BACKLIGHT_PIN                 PD13
-
-  #define TOUCH_CS_PIN                      PE14  // SPI1_NSS
-  #define TOUCH_SCK_PIN                     PA5   // SPI1_SCK
-  #define TOUCH_MISO_PIN                    PA6   // SPI1_MISO
-  #define TOUCH_MOSI_PIN                    PA7   // SPI1_MOSI
-
-  #define BTN_EN1                           PE8
-  #define BTN_EN2                           PE11
-  #define BEEPER_PIN                        PC5
-  #define BTN_ENC                           PE13
 #endif // HAS_SPI_LCD

buildroot/share/PlatformIO/scripts/anet_et4_openblt.py

+# Generate the firmware as OpenBLT needs
+
+import os,sys
+from os.path import join
+
+Import("env")
+
+env.AddPostAction(
+    "$BUILD_DIR/${PROGNAME}.elf",
+    env.VerboseAction(" ".join([
+        "$OBJCOPY", "-O", "srec",
+        "\"$BUILD_DIR/${PROGNAME}.elf\"", "\"$BUILD_DIR/${PROGNAME}.srec\""
+    ]), "Building " + join("$BUILD_DIR","${PROGNAME}.srec"))
+)

buildroot/share/PlatformIO/scripts/stm32_bootloader.py

 
 def noencrypt(source, target, env):
   firmware = os.path.join(target[0].dir.path, board.get("build.firmware"))
-  # do not overwrite encrypted firmware if present
-  if not os.path.isfile(firmware):
-    shutil.copy(target[0].path, firmware)
+  shutil.copy(target[0].path, firmware)
 
 if 'offset' in board.get("build").keys():
   LD_FLASH_OFFSET = board.get("build.offset")
     if "-Wl,--defsym=LD_MAX_DATA_SIZE" in flag:
       env["LINKFLAGS"][i] = "-Wl,--defsym=LD_MAX_DATA_SIZE=" + str(maximum_ram_size - 40)
 
-  if 'firmware' in board.get("build").keys():
-    env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", noencrypt);
+board_keys = board.get("build").keys()
+# Only copy file if there's no encryptation
+if 'firmware' in board_keys and not 'encrypt' in board_keys:
+  env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", noencrypt)

buildroot/share/PlatformIO/variants/MARLIN_F4x7Vx/PeripheralPins.c

   {PA_7,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_5,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
-  // {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+  {PB_15, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_3,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_12, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {NC,    NP,    0}
   {PA_6,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   //  {PB_4,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
   {PB_4,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
-  // {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+  {PB_14, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_2,  SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
   {PC_11, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
   {NC,    NP,    0}

platformio.ini

 board_build.variant  = MARLIN_F103Zx
 board_build.ldscript = ldscript.ld
 board_build.offset   = 0x7000
+board_build.encrypt  = Yes
 board_build.firmware = Robin.bin
 build_flags          = ${common_stm32.build_flags}
   -DENABLE_HWSERIAL3 -DTRANSFER_CLOCK_DIV=8 -DTIMER_SERIAL=TIM5
 board_build.ldscript = ldscript.ld
 board_build.offset   = 0x7000
 board_build.firmware = Robin_mini.bin
+board_build.encrypt  = Yes
 board_upload.offset_address = 0x08007000
 build_unflags        = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC
 extra_scripts        = ${common.extra_scripts}
 board_build.variant  = MARLIN_F4x7Vx
 board_build.ldscript = ldscript.ld
 board_build.firmware = firmware.srec
+# Just anet_et4_openblt.py generates the file, not stm32_bootloader.py
+board_build.encrypt  = Yes
 board_build.offset   = 0x10000
 board_upload.offset_address = 0x08010000
 build_unflags        = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC -DUSBD_VID=0x0483
 extra_scripts        = ${common.extra_scripts}
   pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
   buildroot/share/PlatformIO/scripts/stm32_bootloader.py
+  buildroot/share/PlatformIO/scripts/anet_et4_openblt.py
 
 #
 # BigTreeTech SKR Pro (STM32F407ZGT6 ARM Cortex-M4)
 # Lerdge base
 #
 [lerdge_common]
-platform           = ${common_stm32.platform}
-extends            = common_stm32
-board              = LERDGE
-board_build.offset = 0x10000
-extra_scripts      = ${common.extra_scripts}
-                     pre:buildroot/share/PlatformIO/scripts/copy_marlin_variant_to_framework.py
-                     buildroot/share/PlatformIO/scripts/stm32_bootloader.py
-                     buildroot/share/PlatformIO/scripts/lerdge.py
-build_flags        = ${common_stm32.build_flags}
+platform            = ${common_stm32.platform}
+extends             = common_stm32
+board               = LERDGE
+board_build.offset  = 0x10000
+board_build.encrypt = Yes
+extra_scripts       = ${common.extra_scripts}
+                      pre:buildroot/share/PlatformIO/scripts/copy_marlin_variant_to_framework.py
+                      buildroot/share/PlatformIO/scripts/stm32_bootloader.py
+                      buildroot/share/PlatformIO/scripts/lerdge.py
+build_flags         = ${common_stm32.build_flags}
   -DSTM32F4 -DSTM32F4xx -DTARGET_STM32F4
   -DDISABLE_GENERIC_SERIALUSB -DARDUINO_ARCH_STM32 -DARDUINO_LERDGE
   -DTRANSFER_CLOCK_DIV=8 -DHAL_SRAM_MODULE_ENABLED
-build_unflags      = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC -DUSBD_VID=0x0483
+build_unflags       = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC -DUSBD_VID=0x0483
 
 #
 # Lerdge X
 board_build.variant  = MARLIN_F103Vx
 board_build.ldscript = ldscript.ld
 board_build.offset   = 0x7000
+board_build.encrypt  = Yes
 board_build.firmware = Robin_nano35.bin
 board_upload.offset_address = 0x08007000
 build_unflags        = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC
 [env:mks_robin_pro2]
 platform             = ${common_stm32.platform}
 extends              = common_stm32
-build_flags          = ${common_stm32.build_flags} -DHAL_HCD_MODULE_ENABLED  -DUSBHOST -DARDUINO_BLACK_F407VE
+build_flags          = ${common_stm32.build_flags} -DHAL_HCD_MODULE_ENABLED -DUSBHOST
 board                = genericSTM32F407VET6
 board_build.core     = stm32
-board_build.variant  = MARLIN_F407VE
+board_build.variant  = MARLIN_F4x7Vx
 board_build.ldscript = ldscript.ld
-board_build.firmware = Robin_nano35.bin
+board_build.firmware = firmware.bin
 build_unflags        = ${common_stm32.build_unflags} -DUSBCON -DUSBD_USE_CDC
 debug_tool           = jlink
 upload_protocol      = jlink
 extra_scripts        = ${common.extra_scripts}
   pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
   buildroot/share/PlatformIO/scripts/stm32_bootloader.py
-  buildroot/share/PlatformIO/scripts/mks_encrypt.py
 
 #
 # MKS Robin Nano V3
 extra_scripts        = ${common.extra_scripts}
   pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
   buildroot/share/PlatformIO/scripts/stm32_bootloader.py
-  buildroot/share/PlatformIO/scripts/mks_encrypt.py
 
 #################################
 #                               #