diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index e11fba093572..6dea2e84697e 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -489,6 +489,7 @@
* 11 : 100kΩ Keenovo AC silicone mats, most Wanhao i3 machines - beta 3950, 1%
* 12 : 100kΩ Vishay 0603 SMD NTCS0603E3104FXT (#8) - calibrated for Makibox hot bed
* 13 : 100kΩ Hisens up to 300°C - for "Simple ONE" & "All In ONE" hotend - beta 3950, 1%
+ * 14 : 100kΩ (R25), 4092K (beta25), 4.7kΩ pull-up, bed thermistor as used in Ender-5 S1
* 15 : 100kΩ Calibrated for JGAurora A5 hotend
* 18 : 200kΩ ATC Semitec 204GT-2 Dagoma.Fr - MKS_Base_DKU001327
* 22 : 100kΩ GTM32 Pro vB - hotend - 4.7kΩ pullup to 3.3V and 220Ω to analog input
diff --git a/Marlin/src/core/boards.h b/Marlin/src/core/boards.h
index e2b70bbced16..dd1a5db6c9ad 100644
--- a/Marlin/src/core/boards.h
+++ b/Marlin/src/core/boards.h
@@ -450,6 +450,7 @@
#define BOARD_FYSETC_SPIDER_KING407 5243 // FYSETC Spider King407 (STM32F407ZG)
#define BOARD_MKS_SKIPR_V1 5244 // MKS SKIPR v1.0 all-in-one board (STM32F407VE)
#define BOARD_TRONXY_V10 5245 // TRONXY V10 (STM32F446ZE)
+#define BOARD_CREALITY_F401RE 5246 // Creality CR4NS200141C13 (STM32F401RE) as found in the Ender-5 S1
//
// ARM Cortex-M7
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index cf9a1f22ffe3..92f26db6818c 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -1123,6 +1123,10 @@ void GcodeSuite::process_parsed_command(const bool no_ok/*=false*/) {
case 422: M422(); break; // M422: Set Z Stepper automatic alignment position using probe
#endif
+ #if ENABLED(OTA_FIRMWARE_UPDATE)
+ case 936: M936(); break; // M936: OTA update firmware.
+ #endif
+
#if SPI_FLASH_BACKUP
case 993: M993(); break; // M993: Backup SPI Flash to SD
case 994: M994(); break; // M994: Load a Backup from SD to SPI Flash
diff --git a/Marlin/src/gcode/gcode.h b/Marlin/src/gcode/gcode.h
index cc7fdb198499..b269d518b712 100644
--- a/Marlin/src/gcode/gcode.h
+++ b/Marlin/src/gcode/gcode.h
@@ -300,6 +300,7 @@
* M913 - Set HYBRID_THRESHOLD speed. (Requires HYBRID_THRESHOLD)
* M914 - Set StallGuard sensitivity. (Requires SENSORLESS_HOMING or SENSORLESS_PROBING)
* M919 - Get or Set motor Chopper Times (time_off, hysteresis_end, hysteresis_start) using axis codes XYZE, etc. If no parameters are given, report. (Requires at least one _DRIVER_TYPE defined as TMC2130/2160/5130/5160/2208/2209/2660)
+ * M936 - OTA update firmware. (Requires OTA_FIRMWARE_UPDATE)
* M951 - Set Magnetic Parking Extruder parameters. (Requires MAGNETIC_PARKING_EXTRUDER)
* M3426 - Read MCP3426 ADC over I2C. (Requires HAS_MCP3426_ADC)
* M7219 - Control Max7219 Matrix LEDs. (Requires MAX7219_GCODE)
@@ -1204,6 +1205,10 @@ class GcodeSuite {
static void M928();
#endif
+ #if ENABLED(OTA_FIRMWARE_UPDATE)
+ static void M936();
+ #endif
+
#if ENABLED(MAGNETIC_PARKING_EXTRUDER)
static void M951();
#endif
diff --git a/Marlin/src/gcode/ota/M936.cpp b/Marlin/src/gcode/ota/M936.cpp
new file mode 100644
index 000000000000..6324b3db437f
--- /dev/null
+++ b/Marlin/src/gcode/ota/M936.cpp
@@ -0,0 +1,72 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(OTA_FIRMWARE_UPDATE)
+
+#include "../gcode.h"
+#include "../../libs/BL24CXX.h"
+
+#if ENABLED(CREALITY_RTS)
+ #include "../../lcd/rts/lcd_rts.h"
+#endif
+
+#define OTA_FLAG_EEPROM 90
+
+//#define DEBUG_OUT 1
+#include "../../core/debug_out.h"
+
+/**
+ * M936: Set one of the OTA update flags.
+ * V2 = Upgrade the motherboard firmware
+ * V3 = Upgrade the RTS controller firmware
+ */
+void GcodeSuite::M936() {
+ static uint8_t ota_update_flag = 0x00;
+ const int16_t ota = parser.intval('V', -1);
+ switch (ota) {
+ case 2:
+ // Set the OTA board firmware upgrade flag ahead of reboot.
+ ota_update_flag = 0x01;
+ DEBUG_ECHOLNPGM("Motherboard upgrade flag set");
+ TERN_(CREALITY_RTS, RTS_Error(Error_205));
+ break;
+
+ #if ENABLED(CREALITY_RTS)
+ case 3:
+ // Set the OTA screen firmware upgrade flag ahead of reboot.
+ ota_update_flag = 0x02;
+ DEBUG_ECHOLNPGM("DWIN upgrade flag set");
+ TERN_(CREALITY_RTS, RTS_Error(Error_206));
+ break;
+ #endif
+ }
+
+ switch (ota) {
+ case 2: TERN_(CREALITY_RTS, case 3:)
+ BL24CXX::write(OTA_FLAG_EEPROM, &ota_update_flag, sizeof(ota_update_flag));
+ safe_delay(100);
+ hal.reboot();
+ }
+}
+
+#endif // OTA_FIRMWARE_UPDATE
diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index cd107fa98103..e5072b116a75 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -65,6 +65,10 @@
#undef IIC_BL24CXX_EEPROM
#endif
+#if DISABLED(IIC_BL24CXX_EEPROM)
+ #undef OTA_FIRMWARE_UPDATE
+#endif
+
#ifdef TEENSYDUINO
#undef max
#define max(a,b) ((a)>(b)?(a):(b))
diff --git a/Marlin/src/inc/Warnings.cpp b/Marlin/src/inc/Warnings.cpp
index 0f699e92bb7e..d6ee4405d18f 100644
--- a/Marlin/src/inc/Warnings.cpp
+++ b/Marlin/src/inc/Warnings.cpp
@@ -808,3 +808,17 @@
#if MULTISTEPPING_LIMIT_WARNING
#warning "MULTISTEPPING_LIMIT has been automatically set to 128. Use a lower value if the machine is slow to respond."
#endif
+
+#if SDSORT_CACHE_VFATS_WARNING
+ #warning "SDSORT_CACHE_VFATS has been reduced to VFAT_ENTRIES_LIMIT."
+#endif
+#if SDSORT_CACHE_LPC1768_WARNING
+ #warning "SDCARD_SORT_ALPHA sub-options overridden for LPC1768 with DOGM LCD SCK overlap."
+#endif
+
+/**
+ * Ender-5 S1 bootloader
+ */
+#ifdef STM32F4_UPDATE_FOLDER
+ #warning "Place the firmware bin file in a folder named 'STM32F4_UPDATE' on the SD card. Install with 'M936 V2'."
+#endif
diff --git a/Marlin/src/module/thermistor/thermistor_1.h b/Marlin/src/module/thermistor/thermistor_1.h
index 2ebf8da550a0..e581f1b5cd4b 100644
--- a/Marlin/src/module/thermistor/thermistor_1.h
+++ b/Marlin/src/module/thermistor/thermistor_1.h
@@ -23,6 +23,10 @@
// R25 = 100 kOhm, beta25 = 4092 K, 4.7 kOhm pull-up, bed thermistor
constexpr temp_entry_t temptable_1[] PROGMEM = {
+ { OV( 18), 320 },
+ { OV( 19), 315 },
+ { OV( 20), 310 },
+ { OV( 22), 305 },
{ OV( 23), 300 },
{ OV( 25), 295 },
{ OV( 27), 290 },
diff --git a/Marlin/src/module/thermistor/thermistor_14.h b/Marlin/src/module/thermistor/thermistor_14.h
new file mode 100644
index 000000000000..f0bc6f606ee8
--- /dev/null
+++ b/Marlin/src/module/thermistor/thermistor_14.h
@@ -0,0 +1,85 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+#pragma once
+
+// R25 = 100 kOhm, beta25 = 4092 K, 4.7 kOhm pull-up, bed thermistor
+const temp_entry_t temptable_14[] PROGMEM = {
+ { OV( 23), 275 },
+ { OV( 25), 270 },
+ { OV( 27), 265 },
+ { OV( 28), 260 },
+ { OV( 31), 255 },
+ { OV( 33), 250 },
+ { OV( 35), 245 },
+ { OV( 38), 240 },
+ { OV( 41), 235 },
+ { OV( 44), 230 },
+ { OV( 47), 225 },
+ { OV( 52), 220 },
+ { OV( 56), 215 },
+ { OV( 62), 210 },
+ { OV( 68), 205 },
+ { OV( 74), 200 },
+ { OV( 81), 195 },
+ { OV( 90), 190 },
+ { OV( 99), 185 },
+ { OV( 108), 180 },
+ { OV( 121), 175 },
+ { OV( 133), 170 },
+ { OV( 147), 165 },
+ { OV( 162), 160 },
+ { OV( 180), 155 },
+ { OV( 199), 150 },
+ { OV( 219), 145 },
+ { OV( 243), 140 },
+ { OV( 268), 135 },
+ { OV( 296), 130 },
+ { OV( 326), 125 },
+ { OV( 358), 120 },
+ { OV( 398), 115 },
+ { OV( 435), 110 },
+ { OV( 476), 105 },
+ { OV( 519), 100 },
+ { OV( 566), 95 },
+ { OV( 610), 90 },
+ { OV( 658), 85 },
+ { OV( 703), 80 },
+ { OV( 742), 75 },
+ { OV( 773), 70 },
+ { OV( 807), 65 },
+ { OV( 841), 60 },
+ { OV( 871), 55 },
+ { OV( 895), 50 },
+ { OV( 918), 45 },
+ { OV( 937), 40 },
+ { OV( 954), 35 },
+ { OV( 968), 30 },
+ { OV( 978), 25 },
+ { OV( 985), 20 },
+ { OV( 993), 15 },
+ { OV( 999), 10 },
+ { OV(1004), 5 },
+ { OV(1008), 0 },
+ { OV(1012), -5 },
+ { OV(1016), -10 },
+ { OV(1020), -15 }
+};
diff --git a/Marlin/src/module/thermistor/thermistors.h b/Marlin/src/module/thermistor/thermistors.h
index b7cba85e1a59..d75a1de9173d 100644
--- a/Marlin/src/module/thermistor/thermistors.h
+++ b/Marlin/src/module/thermistor/thermistors.h
@@ -109,6 +109,9 @@ typedef struct { raw_adc_t value; celsius_t celsius; } temp_entry_t;
//#if ANY_THERMISTOR_IS(13) // beta25 = 4100 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Hisens"
#include "thermistor_13.h"
//#endif
+#if ANY_THERMISTOR_IS(14) // beta25 = 4092 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "EPCOS" for hot bed
+ #include "thermistor_14.h"
+#endif
#if ANY_THERMISTOR_IS(15) // JGAurora A5 thermistor calibration
#include "thermistor_15.h"
#endif
diff --git a/Marlin/src/pins/pins.h b/Marlin/src/pins/pins.h
index 75856cb4e217..adf9346f8a07 100644
--- a/Marlin/src/pins/pins.h
+++ b/Marlin/src/pins/pins.h
@@ -735,6 +735,8 @@
#include "stm32f4/pins_MKS_SKIPR_V1_0.h" // STM32F4 env:mks_skipr_v1 env:mks_skipr_v1_nobootloader
#elif MB(TRONXY_V10)
#include "stm32f4/pins_TRONXY_V10.h" // STM32F4 env:STM32F446_tronxy
+#elif MB(CREALITY_F401RE)
+ #include "stm32f4/pins_CREALITY_F401.h" // STM32F4 env:STM32F401RE_creality
//
// ARM Cortex M7
diff --git a/Marlin/src/pins/stm32f4/pins_CREALITY_F401.h b/Marlin/src/pins/stm32f4/pins_CREALITY_F401.h
new file mode 100644
index 000000000000..7f9eba990137
--- /dev/null
+++ b/Marlin/src/pins/stm32f4/pins_CREALITY_F401.h
@@ -0,0 +1,241 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ */
+#pragma once
+
+#include "env_validate.h"
+
+#define BOARD_INFO_NAME "STM32F401RET6"
+#define DEFAULT_MACHINE_NAME "Ender-5 S1"
+
+#define IIC_BL24CXX_EEPROM // EEPROM on I2C-0 used only for display settings
+#if ENABLED(IIC_BL24CXX_EEPROM)
+ #define IIC_EEPROM_SDA PA11
+ #define IIC_EEPROM_SCL PA12
+ #define MARLIN_EEPROM_SIZE 0x800 // 2Kb (24C16)
+#else
+ #define SDCARD_EEPROM_EMULATION // SD EEPROM until all EEPROM is BL24CXX
+ #define MARLIN_EEPROM_SIZE 0x800 // 2Kb
+#endif
+
+// SPI
+//#define SPI_EEPROM // EEPROM on SPI-0
+//#define SPI_CHAN_EEPROM1 ?
+//#define SPI_EEPROM1_CS ?
+
+// 2K EEPROM
+//#define SPI_EEPROM2_CS ?
+
+// 32Mb FLASH
+//#define SPI_FLASH_CS ?
+
+//
+// Servos
+//
+#define SERVO0_PIN PC13 // BLTouch OUT
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN PA5
+#define Y_STOP_PIN PA6
+
+#if ENABLED(BLTOUCH)
+ #define Z_MAX_PIN PA15 // ROCK_20220730
+ #define Z_MIN_PIN PC14
+ //#define Z_STOP_PIN_NADD PA15 // Added z-axis limit switch
+#elif ENABLED(PROBE_ACTIVATION_SWITCH)
+ #define Z_MIN_PIN PA15
+ #define PROBE_TARE_PIN PC14
+ #define PROBE_ACTIVATION_SWITCH_PIN PB2
+#else
+ #define Z_MIN_PIN PA15
+#endif
+
+//
+// Filament runout
+//
+#if ENABLED(FILAMENT_RUNOUT_SENSOR)
+ #define FIL_RUNOUT_PIN PC15
+#endif
+
+//
+// Steppers Motor drive chip power control
+//
+#define X_ENABLE_PIN PC3
+#define X_STEP_PIN PC2
+#define X_DIR_PIN PB9
+
+#define Y_ENABLE_PIN PC3
+#define Y_STEP_PIN PB8
+#define Y_DIR_PIN PB7
+
+#define Z_ENABLE_PIN PC3
+#define Z_STEP_PIN PB6
+#define Z_DIR_PIN PB5
+
+#define E0_ENABLE_PIN PC3
+#define E0_STEP_PIN PB4
+#define E0_DIR_PIN PB3
+
+//
+// Temperature Sensors
+//
+#ifndef TEMP_0_PIN
+ #define TEMP_0_PIN PC5 // E1_THERMISTOR PA0 -> PT100
+#endif
+#define TEMP_BED_PIN PC4 // BED_THERMISTOR_1
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN PA1 // E1_HEAT_PWM
+#define HEATER_BED_PIN PA7 // BED_HEAT_1 FET
+
+#define FAN0_PIN PA0 // Part cooling fan FET
+//#define FAN1_PIN PE11 // Extruder fan FET
+//#define FAN2_PIN PE1 // Controller fan FET
+
+#ifndef E0_AUTO_FAN_PIN
+ #define E0_AUTO_FAN_PIN PA1 // FAN1_PIN
+#endif
+
+//
+// SD Card
+//
+#define SD_DETECT_PIN PC7
+#define SDCARD_CONNECTION ONBOARD
+#define ONBOARD_SPI_DEVICE 1
+#define ONBOARD_SD_CS_PIN PC12 // SDSS
+#define SDIO_SUPPORT
+#define NO_SD_HOST_DRIVE // This board's SD is only seen by the printer
+
+// SPI 2
+#if ENABLED(RET6_12864_LCD)
+
+ #define LCD_PINS_RS PB12
+ #define LCD_PINS_ENABLE PB15
+ #define LCD_PINS_D4 PB13
+ #define BTN_EN2 PB14
+#endif
+
+//#define LED_CONTROL_PIN PA7
+
+//
+// WiFI Reset
+//
+#ifdef MENU_RESET_WIFI
+ #define RESET_WIFI_PIN PB12
+#endif
+
+//
+// Backpower
+//
+#ifndef BACKPOWER_CTRL_PIN
+ #define BACKPOWER_CTRL_PIN PA4 // Pull down on the electricity, When the ADC detects that the 24V power supply is below 20V, Save the continued call data first, PA4 = 1
+#endif
+
+#ifndef CHECK_24V_PIN
+ #define POWER_DETECTION_PIN PB0 // Detect ADC input pin of 24V power supply
+#endif
+
+/**
+ * Logical pin vs. port/pin cross reference
+ *
+ * PA0 54 // E1_THERMISTOR PA9 0 // TX
+ * PA1 55 // E2_THERMISTOR PA10 1 // RX
+ * PA2 56 // E3_THERMISTOR PD3 2 // CTS
+ * PA3 53 // BED_THERMISTOR_3 PD4 3 // RTS
+ * PA4 16 // SPI_CS PD5 4 // TX
+ * PA5 17 // SPI_SCK PD6 5 // RX
+ * PA6 18 // SPI_MISO PB5 6 // WIFI_WAKEUP
+ * PA7 19 // SPI_MOSI PE11 7 // WIFI_RESET
+ * PA8 43 // V_STOP PE12 8 // WIFI_BOOT
+ * PA9 0 // TX PE1 9 // STATUS_LED
+ * PA10 1 // RX PB12 10 // SPI_CS
+ * PA11 30 // OTG_DM PB15 11 // SPI_MOSI
+ * PA12 31 // OTG_DP PB14 12 // SPI_MISO
+ * PA13 20 // JTAG_TMS/SWDIO PB13 13 // SPI_SCK
+ * PA14 21 // JTAG_TCK/SWCLK PB7 14 // SDA
+ * PA15 25 // SD_CARD_DETECT PB6 15 // SCL
+ * PB0 49 // E2_HEAT_PWM PA4 16 // SPI_CS
+ * PB1 50 // E3_HEAT_PWM PA5 17 // SPI_SCK
+ * PB3 22 // JTAG_TDO/SWO PA6 18 // SPI_MISO
+ * PB4 37 // USER4 PA7 19 // SPI_MOSI
+ * PB5 6 // WIFI_WAKEUP PA13 20 // JTAG_TMS/SWDIO
+ * PB6 15 // SCL PA14 21 // JTAG_TCK/SWCLK
+ * PB7 14 // SDA PB3 22 // JTAG_TDO/SWO
+ * PB8 77 // E3_PWM PC8 23 // SDIO_D0
+ * PB9 35 // USER1 PC9 24 // SDIO_D1
+ * PB10 64 // Y_PWM PA15 25 // SD_CARD_DETECT
+ * PB12 10 // SPI_CS PC10 26 // SDIO_D2
+ * PB13 13 // SPI_SCK PC11 27 // SDIO_D3
+ * PB14 12 // SPI_MISO PC12 28 // SDIO_CK
+ * PB15 11 // SPI_MOSI PD2 29 // SDIO_CMD
+ * PC0 68 // Z_DIR PA11 30 // OTG_DM
+ * PC1 33 // IR_ON PA12 31 // OTG_DP
+ * PC2 51 // BED_THERMISTOR_1 PD1 32 // IR_OUT
+ * PC3 52 // BED_THERMISTOR_2 PC1 33 // IR_ON
+ * PC4 57 // E1_FAN PD7 34 // USER3
+ * PC5 58 // E2_FAN PB9 35 // USER1
+ * PC6 67 // Z_PWM PE0 36 // USER2
+ * PC7 48 // E1_HEAT_PWM PB4 37 // USER4
+ * PC8 23 // SDIO_D0 PE7 38 // USER_BUTTON
+ * PC9 24 // SDIO_D1 PD8 39 // X_STOP
+ * PC10 26 // SDIO_D2 PD9 40 // Y_STOP
+ * PC11 27 // SDIO_D3 PD10 41 // Z_STOP
+ * PC12 28 // SDIO_CK PD11 42 // U_STOP
+ * PC13 70 // E1_DIR PA8 43 // V_STOP
+ * PC14 69 // E1_RESET PD0 44 // W_STOP
+ * PC15 66 // Z_RESET PD13 45 // BED_HEAT_2
+ * PD0 44 // W_STOP PD14 46 // BED_HEAT_1
+ * PD1 32 // IR_OUT PD15 47 // BED_HEAT_3
+ * PD2 29 // SDIO_CMD PC7 48 // E1_HEAT_PWM
+ * PD3 2 // CTS PB0 49 // E2_HEAT_PWM
+ * PD4 3 // RTS PB1 50 // E3_HEAT_PWM
+ * PD5 4 // TX PC2 51 // BED_THERMISTOR_1
+ * PD6 5 // RX PC3 52 // BED_THERMISTOR_2
+ * PD7 34 // USER3 PA3 53 // BED_THERMISTOR_3
+ * PD8 39 // X_STOP PA0 54 // E1_THERMISTOR
+ * PD9 40 // Y_STOP PA1 55 // E2_THERMISTOR
+ * PD10 41 // Z_STOP PA2 56 // E3_THERMISTOR
+ * PD11 42 // U_STOP PC4 57 // E1_FAN
+ * PD12 71 // E1_PWM PC5 58 // E2_FAN
+ * PD13 45 // BED_HEAT_2 PE8 59 // E3_FAN
+ * PD14 46 // BED_HEAT_1 PE13 60 // X_RESET
+ * PD15 47 // BED_HEAT_3 PE14 61 // X_PWM
+ * PE0 36 // USER2 PE15 62 // X_DIR
+ * PE1 9 // STATUS_LED PE10 63 // Y_RESET
+ * PE2 76 // E3_DIR PB10 64 // Y_PWM
+ * PE3 75 // E3_RESET PE9 65 // Y_DIR
+ * PE4 72 // E2_RESET PC15 66 // Z_RESET
+ * PE5 73 // E2_PWM PC6 67 // Z_PWM
+ * PE6 74 // E2_DIR PC0 68 // Z_DIR
+ * PE7 38 // USER_BUTTON PC14 69 // E1_RESET
+ * PE8 59 // E3_FAN PC13 70 // E1_DIR
+ * PE9 65 // Y_DIR PD12 71 // E1_PWM
+ * PE10 63 // Y_RESET PE4 72 // E2_RESET
+ * PE11 7 // WIFI_RESET PE5 73 // E2_PWM
+ * PE12 8 // WIFI_BOOT PE6 74 // E2_DIR
+ * PE13 60 // X_RESET PE3 75 // E3_RESET
+ * PE14 61 // X_PWM PE2 76 // E3_DIR
+ * PE15 62 // X_DIR PB8 77 // E3_PWM
+ */
diff --git a/buildroot/share/PlatformIO/boards/marlin_CREALITY_STM32F401RE.json b/buildroot/share/PlatformIO/boards/marlin_CREALITY_STM32F401RE.json
new file mode 100644
index 000000000000..31739c3a386a
--- /dev/null
+++ b/buildroot/share/PlatformIO/boards/marlin_CREALITY_STM32F401RE.json
@@ -0,0 +1,65 @@
+{
+ "build": {
+ "core": "stm32",
+ "cpu": "cortex-m4",
+ "extra_flags": "-DSTM32F401xx",
+ "f_cpu": "84000000L",
+ "hwids": [
+ [
+ "0x1EAF",
+ "0x0003"
+ ],
+ [
+ "0x0483",
+ "0x3748"
+ ]
+ ],
+ "ldscript": "ldscript.ld",
+ "mcu": "stm32f401ret6",
+ "variant": "MARLIN_CREALITY_STM32F401RE"
+ },
+ "debug": {
+ "jlink_device": "STM32F401RE",
+ "openocd_target": "stm32f4x",
+ "svd_path": "STM32F40x.svd",
+ "tools": {
+ "stlink": {
+ "server": {
+ "arguments": [
+ "-f",
+ "scripts/interface/stlink.cfg",
+ "-c",
+ "transport select hla_swd",
+ "-f",
+ "scripts/target/stm32f4x.cfg",
+ "-c",
+ "reset_config none"
+ ],
+ "executable": "bin/openocd",
+ "package": "tool-openocd"
+ }
+ }
+ }
+ },
+ "frameworks": [
+ "arduino",
+ "stm32cube"
+ ],
+ "name": "STM32F401RE (64k RAM. 512k Flash)",
+ "upload": {
+ "disable_flushing": false,
+ "maximum_ram_size": 65536,
+ "maximum_size": 514288,
+ "protocol": "stlink",
+ "protocols": [
+ "stlink",
+ "dfu",
+ "jlink"
+ ],
+ "require_upload_port": true,
+ "use_1200bps_touch": false,
+ "wait_for_upload_port": false
+ },
+ "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f401re.html",
+ "vendor": "Generic"
+}
diff --git a/buildroot/share/PlatformIO/ldscripts/creality.ld b/buildroot/share/PlatformIO/ldscripts/creality.ld
index 785345543c0c..8b330c9457b2 100644
--- a/buildroot/share/PlatformIO/ldscripts/creality.ld
+++ b/buildroot/share/PlatformIO/ldscripts/creality.ld
@@ -1,7 +1,7 @@
MEMORY
{
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K - 40
- rom (rx) : ORIGIN = 0x08007000, LENGTH = 512K - 28K
+ rom (rx) : ORIGIN = 0x08007000, LENGTH = 512K - 64K
}
/* Provide memory region aliases for common.inc */
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PeripheralPins.c b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PeripheralPins.c
new file mode 100644
index 000000000000..418ef5aa7abc
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PeripheralPins.c
@@ -0,0 +1,252 @@
+/*
+ *******************************************************************************
+ * Copyright (c) 2019, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ * Automatically generated from STM32F401R[(B-C)|(D-E)]Tx.xml
+ */
+#include "Arduino.h"
+#include "PeripheralPins.h"
+
+/* =====
+ * Note: Commented lines are alternative possibilities which are not used per default.
+ * If you change them, you will have to know what you do
+ * =====
+ */
+
+//*** ADC ***
+
+#ifdef HAL_ADC_MODULE_ENABLED
+WEAK const PinMap PinMap_ADC[] = {
+ {PA_0, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 0, 0)}, // ADC1_IN0
+ {PA_1, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 1, 0)}, // ADC1_IN1
+ {PA_2, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 2, 0)}, // ADC1_IN2
+ {PA_3, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 3, 0)}, // ADC1_IN3
+ {PA_4, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 4, 0)}, // ADC1_IN4
+ {PA_5, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 5, 0)}, // ADC1_IN5
+ {PA_6, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 6, 0)}, // ADC1_IN6
+ {PA_7, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 7, 0)}, // ADC1_IN7
+ {PB_0, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 8, 0)}, // ADC1_IN8
+ {PB_1, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 9, 0)}, // ADC1_IN9
+ {PC_0, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 10, 0)}, // ADC1_IN10
+ {PC_1, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 11, 0)}, // ADC1_IN11
+ {PC_2, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 12, 0)}, // ADC1_IN12
+ {PC_3, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 13, 0)}, // ADC1_IN13
+ {PC_4, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 14, 0)}, // ADC1_IN14
+ {PC_5, ADC1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 15, 0)}, // ADC1_IN15
+ {NC, NP, 0}
+};
+#endif
+
+//*** No DAC ***
+
+//*** I2C ***
+
+#ifdef HAL_I2C_MODULE_ENABLED
+WEAK const PinMap PinMap_I2C_SDA[] = {
+ {PB_3, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C2)},
+ {PB_4, I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF9_I2C3)},
+ {PB_7, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
+ {PB_9, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
+ {PC_9, I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
+ {NC, NP, 0}
+};
+
+WEAK const PinMap PinMap_I2C_SCL[] = {
+ {PA_8, I2C3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C3)},
+ {PB_6, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
+ {PB_8, I2C1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
+ {PB_10, I2C2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
+ {NC, NP, 0}
+};
+#endif
+
+//*** PWM ***
+
+#ifdef HAL_TIM_MODULE_ENABLED
+WEAK const PinMap PinMap_PWM[] = {
+ //{PA_0, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
+ {PA_0, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 1, 0)}, // TIM5_CH1
+ //{PA_1, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
+ {PA_1, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 2, 0)}, // TIM5_CH2
+ //{PA_2, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // TIM2_CH3
+ {PA_2, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 3, 0)}, // TIM5_CH3
+ //{PA_2, TIM9, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9, 1, 0)}, // TIM9_CH1
+ //{PA_3, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 4, 0)}, // TIM2_CH4
+ {PA_3, TIM5, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM5, 4, 0)}, // TIM5_CH4
+ //{PA_3, TIM9, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM9, 2, 0)}, // TIM9_CH2
+ {PA_5, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
+ {PA_6, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // TIM3_CH1
+ //{PA_7, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 1)}, // TIM1_CH1N
+ {PA_7, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
+ {PA_8, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 0)}, // TIM1_CH1
+ {PA_9, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 0)}, // TIM1_CH2
+ {PA_10, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 0)}, // TIM1_CH3
+ {PA_11, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 4, 0)}, // TIM1_CH4
+ {PA_15, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 1, 0)}, // TIM2_CH1
+ //{PB_0, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // TIM1_CH2N
+ {PB_0, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 3, 0)}, // TIM3_CH3
+ //{PB_1, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // TIM1_CH3N
+ {PB_1, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // TIM3_CH4
+ {PB_3, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 2, 0)}, // TIM2_CH2
+ {PB_4, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // TIM3_CH1
+ {PB_5, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
+ {PB_6, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 1, 0)}, // TIM4_CH1
+ {PB_7, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 2, 0)}, // TIM4_CH2
+ {PB_8, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 3, 0)}, // TIM4_CH3
+ //{PB_8, TIM10, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM10, 1, 0)}, // TIM10_CH1
+ {PB_9, TIM4, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM4, 4, 0)}, // TIM4_CH4
+ //{PB_9, TIM11, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF3_TIM11, 1, 0)}, // TIM11_CH1
+ {PB_10, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM2, 3, 0)}, // TIM2_CH3
+ {PB_13, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 1, 1)}, // TIM1_CH1N
+ {PB_14, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 2, 1)}, // TIM1_CH2N
+ {PB_15, TIM1, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_TIM1, 3, 1)}, // TIM1_CH3N
+ {PC_6, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 1, 0)}, // TIM3_CH1
+ {PC_7, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 2, 0)}, // TIM3_CH2
+ {PC_8, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 3, 0)}, // TIM3_CH3
+ {PC_9, TIM3, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_TIM3, 4, 0)}, // TIM3_CH4
+ {NC, NP, 0}
+};
+#endif
+
+//*** SERIAL ***
+
+#ifdef HAL_UART_MODULE_ENABLED
+WEAK const PinMap PinMap_UART_TX[] = {
+ {PA_2, USART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
+ {PA_9, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {PA_11, USART6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+ {PB_6, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {PC_6, USART6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+ {NC, NP, 0}
+};
+
+WEAK const PinMap PinMap_UART_RX[] = {
+ {PA_3, USART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
+ {PA_10, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {PA_12, USART6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+ {PB_7, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {PC_7, USART6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
+ {NC, NP, 0}
+};
+
+WEAK const PinMap PinMap_UART_RTS[] = {
+ {PA_1, USART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
+ {PA_12, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {NC, NP, 0}
+};
+
+WEAK const PinMap PinMap_UART_CTS[] = {
+ {PA_0, USART2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
+ {PA_11, USART1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
+ {NC, NP, 0}
+};
+#endif
+
+//*** SPI ***
+
+#ifdef HAL_SPI_MODULE_ENABLED
+WEAK const PinMap PinMap_SPI_MOSI[] = {
+ {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)},
+ {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}
+};
+
+WEAK const PinMap PinMap_SPI_MISO[] = {
+ {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)},
+ {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}
+};
+
+WEAK const PinMap PinMap_SPI_SCLK[] = {
+ {PA_5, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+ //{PB_3, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+ {PB_3, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+ {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {PC_10, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+ {NC, NP, 0}
+};
+
+WEAK const PinMap PinMap_SPI_SSEL[] = {
+ {PA_4, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+ //{PA_4, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+ //{PA_15, SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
+ {PA_15, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+ {PB_9, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {PB_12, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+ {NC, NP, 0}
+};
+#endif
+
+//*** No CAN ***
+
+//*** No ETHERNET ***
+
+//*** No QUADSPI ***
+
+//*** USB ***
+
+#ifdef HAL_PCD_MODULE_ENABLED
+WEAK const PinMap PinMap_USB_OTG_FS[] = {
+#ifndef ARDUINO_CoreBoard_F401RC
+ {PA_8, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_SOF
+ {PA_9, USB_OTG_FS, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, GPIO_AF_NONE)}, // USB_OTG_FS_VBUS
+ {PA_10, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_ID
+#endif
+ {PA_11, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_DM
+ {PA_12, USB_OTG_FS, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF10_OTG_FS)}, // USB_OTG_FS_DP
+ {NC, NP, 0}
+};
+#endif
+
+//*** No USB_OTG_HS ***
+
+//*** SD ***
+
+#ifdef HAL_SD_MODULE_ENABLED
+WEAK const PinMap PinMap_SD[] = {
+ {PB_8, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D4
+ {PB_9, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D5
+ {PC_6, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D6
+ {PC_7, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D7
+ {PC_8, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D0
+ {PC_9, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D1
+ {PC_10, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D2
+ {PC_11, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF12_SDIO)}, // SDIO_D3
+ {PC_12, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF12_SDIO)}, // SDIO_CK
+ {PD_2, SDIO, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF12_SDIO)}, // SDIO_CMD
+ {NC, NP, 0}
+};
+#endif
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PinNamesVar.h b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PinNamesVar.h
new file mode 100644
index 000000000000..f5db451e6f19
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/PinNamesVar.h
@@ -0,0 +1,33 @@
+/* SYS_WKUP */
+#ifdef PWR_WAKEUP_PIN1
+ SYS_WKUP1 = PA_0,
+#endif
+#ifdef PWR_WAKEUP_PIN2
+ SYS_WKUP2 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN3
+ SYS_WKUP3 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN4
+ SYS_WKUP4 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN5
+ SYS_WKUP5 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN6
+ SYS_WKUP6 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN7
+ SYS_WKUP7 = NC,
+#endif
+#ifdef PWR_WAKEUP_PIN8
+ SYS_WKUP8 = NC,
+#endif
+/* USB */
+#ifdef USBCON
+ USB_OTG_FS_SOF = PA_8,
+ USB_OTG_FS_VBUS = PA_9,
+ USB_OTG_FS_ID = PA_10,
+ USB_OTG_FS_DM = PA_11,
+ USB_OTG_FS_DP = PA_12,
+#endif
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/hal_conf_custom.h b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/hal_conf_custom.h
new file mode 100644
index 000000000000..1dd047bb9005
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/hal_conf_custom.h
@@ -0,0 +1,495 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_conf.h
+ * @brief HAL configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_HAL_CONF_CUSTOM
+#define __STM32F4xx_HAL_CONF_CUSTOM
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+ /**
+ * @brief This is the list of modules to be used in the HAL driver
+ */
+#define HAL_MODULE_ENABLED
+#define HAL_ADC_MODULE_ENABLED
+#define HAL_CRC_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
+#define HAL_IWDG_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_RTC_MODULE_ENABLED
+#define HAL_SPI_MODULE_ENABLED
+#define HAL_TIM_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+//#define HAL_PCD_MODULE_ENABLED // Automatically added if any type of USB is enabled, as in Arduino IDE. (STM32 v3.10700.191028)
+
+//#define HAL_CAN_MODULE_ENABLED
+//#define HAL_CAN_LEGACY_MODULE_ENABLED
+//#define HAL_CEC_MODULE_ENABLED
+//#define HAL_CRYP_MODULE_ENABLED
+//#define HAL_DAC_MODULE_ENABLED
+//#define HAL_DCMI_MODULE_ENABLED
+//#define HAL_DMA2D_MODULE_ENABLED
+//#define HAL_ETH_MODULE_ENABLED
+//#define HAL_NAND_MODULE_ENABLED
+//#define HAL_NOR_MODULE_ENABLED
+//#define HAL_PCCARD_MODULE_ENABLED
+//#define HAL_SRAM_MODULE_ENABLED
+//#define HAL_SDRAM_MODULE_ENABLED
+//#define HAL_HASH_MODULE_ENABLED
+//#define HAL_EXTI_MODULE_ENABLED
+//#define HAL_SMBUS_MODULE_ENABLED
+//#define HAL_I2S_MODULE_ENABLED
+//#define HAL_LTDC_MODULE_ENABLED
+//#define HAL_DSI_MODULE_ENABLED
+//#define HAL_QSPI_MODULE_ENABLED
+//#define HAL_RNG_MODULE_ENABLED
+//#define HAL_SAI_MODULE_ENABLED
+#define HAL_SD_MODULE_ENABLED
+//#define HAL_UART_MODULE_ENABLED
+//#define HAL_USART_MODULE_ENABLED
+//#define HAL_IRDA_MODULE_ENABLED
+//#define HAL_SMARTCARD_MODULE_ENABLED
+//#define HAL_WWDG_MODULE_ENABLED
+//#define HAL_HCD_MODULE_ENABLED
+//#define HAL_FMPI2C_MODULE_ENABLED
+//#define HAL_SPDIFRX_MODULE_ENABLED
+//#define HAL_DFSDM_MODULE_ENABLED
+//#define HAL_LPTIM_MODULE_ENABLED
+//#define HAL_MMC_MODULE_ENABLED
+
+/* ########################## HSE/HSI Values adaptation ##################### */
+/**
+ * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSE is used as system clock source, directly or through the PLL).
+ */
+#ifndef HSE_VALUE
+#define HSE_VALUE 8000000U /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#ifndef HSE_STARTUP_TIMEOUT
+#define HSE_STARTUP_TIMEOUT 100U /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal High Speed oscillator (HSI) value.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSI is used as system clock source, directly or through the PLL).
+ */
+#ifndef HSI_VALUE
+#define HSI_VALUE 16000000U /*!< Value of the Internal oscillator in Hz */
+#endif /* HSI_VALUE */
+
+/**
+ * @brief Internal Low Speed oscillator (LSI) value.
+ */
+#ifndef LSI_VALUE
+#define LSI_VALUE 32000U /*!< LSI Typical Value in Hz */
+#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
+The real value may vary depending on the variations
+in voltage and temperature. */
+/**
+ * @brief External Low Speed oscillator (LSE) value.
+ */
+#ifndef LSE_VALUE
+#define LSE_VALUE 32768U /*!< Value of the External Low Speed oscillator in Hz */
+#endif /* LSE_VALUE */
+
+#ifndef LSE_STARTUP_TIMEOUT
+#define LSE_STARTUP_TIMEOUT 5000U /*!< Time out for LSE start up, in ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief External clock source for I2S peripheral
+ * This value is used by the I2S HAL module to compute the I2S clock source
+ * frequency, this source is inserted directly through I2S_CKIN pad.
+ */
+#ifndef EXTERNAL_CLOCK_VALUE
+#define EXTERNAL_CLOCK_VALUE 12288000U /*!< Value of the External oscillator in Hz*/
+#endif /* EXTERNAL_CLOCK_VALUE */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+ === you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+ * @brief This is the HAL system configuration section
+ */
+#if !defined (VDD_VALUE)
+#define VDD_VALUE 3300U /*!< Value of VDD in mv */
+#endif
+#if !defined (TICK_INT_PRIORITY)
+#define TICK_INT_PRIORITY 0x00U /*!< tick interrupt priority */
+#endif
+#if !defined (USE_RTOS)
+#define USE_RTOS 0U
+#endif
+#if !defined (PREFETCH_ENABLE)
+#define PREFETCH_ENABLE 1U
+#endif
+#if !defined (INSTRUCTION_CACHE_ENABLE)
+#define INSTRUCTION_CACHE_ENABLE 1U
+#endif
+#if !defined (DATA_CACHE_ENABLE)
+#define DATA_CACHE_ENABLE 1U
+#endif
+
+#define USE_HAL_ADC_REGISTER_CALLBACKS 0U /* ADC register callback disabled */
+#define USE_HAL_CAN_REGISTER_CALLBACKS 0U /* CAN register callback disabled */
+#define USE_HAL_CEC_REGISTER_CALLBACKS 0U /* CEC register callback disabled */
+#define USE_HAL_CRYP_REGISTER_CALLBACKS 0U /* CRYP register callback disabled */
+#define USE_HAL_DAC_REGISTER_CALLBACKS 0U /* DAC register callback disabled */
+#define USE_HAL_DCMI_REGISTER_CALLBACKS 0U /* DCMI register callback disabled */
+#define USE_HAL_DFSDM_REGISTER_CALLBACKS 0U /* DFSDM register callback disabled */
+#define USE_HAL_DMA2D_REGISTER_CALLBACKS 0U /* DMA2D register callback disabled */
+#define USE_HAL_DSI_REGISTER_CALLBACKS 0U /* DSI register callback disabled */
+#define USE_HAL_ETH_REGISTER_CALLBACKS 0U /* ETH register callback disabled */
+#define USE_HAL_HASH_REGISTER_CALLBACKS 0U /* HASH register callback disabled */
+#define USE_HAL_HCD_REGISTER_CALLBACKS 0U /* HCD register callback disabled */
+#define USE_HAL_I2C_REGISTER_CALLBACKS 0U /* I2C register callback disabled */
+#define USE_HAL_FMPI2C_REGISTER_CALLBACKS 0U /* FMPI2C register callback disabled */
+#define USE_HAL_I2S_REGISTER_CALLBACKS 0U /* I2S register callback disabled */
+#define USE_HAL_IRDA_REGISTER_CALLBACKS 0U /* IRDA register callback disabled */
+#define USE_HAL_LPTIM_REGISTER_CALLBACKS 0U /* LPTIM register callback disabled */
+#define USE_HAL_LTDC_REGISTER_CALLBACKS 0U /* LTDC register callback disabled */
+#define USE_HAL_MMC_REGISTER_CALLBACKS 0U /* MMC register callback disabled */
+#define USE_HAL_NAND_REGISTER_CALLBACKS 0U /* NAND register callback disabled */
+#define USE_HAL_NOR_REGISTER_CALLBACKS 0U /* NOR register callback disabled */
+#define USE_HAL_PCCARD_REGISTER_CALLBACKS 0U /* PCCARD register callback disabled */
+#define USE_HAL_PCD_REGISTER_CALLBACKS 0U /* PCD register callback disabled */
+#define USE_HAL_QSPI_REGISTER_CALLBACKS 0U /* QSPI register callback disabled */
+#define USE_HAL_RNG_REGISTER_CALLBACKS 0U /* RNG register callback disabled */
+#define USE_HAL_RTC_REGISTER_CALLBACKS 0U /* RTC register callback disabled */
+#define USE_HAL_SAI_REGISTER_CALLBACKS 0U /* SAI register callback disabled */
+#define USE_HAL_SD_REGISTER_CALLBACKS 0U /* SD register callback disabled */
+#define USE_HAL_SMARTCARD_REGISTER_CALLBACKS 0U /* SMARTCARD register callback disabled */
+#define USE_HAL_SDRAM_REGISTER_CALLBACKS 0U /* SDRAM register callback disabled */
+#define USE_HAL_SRAM_REGISTER_CALLBACKS 0U /* SRAM register callback disabled */
+#define USE_HAL_SPDIFRX_REGISTER_CALLBACKS 0U /* SPDIFRX register callback disabled */
+#define USE_HAL_SMBUS_REGISTER_CALLBACKS 0U /* SMBUS register callback disabled */
+#define USE_HAL_SPI_REGISTER_CALLBACKS 0U /* SPI register callback disabled */
+#define USE_HAL_TIM_REGISTER_CALLBACKS 0U /* TIM register callback disabled */
+#define USE_HAL_UART_REGISTER_CALLBACKS 0U /* UART register callback disabled */
+#define USE_HAL_USART_REGISTER_CALLBACKS 0U /* USART register callback disabled */
+#define USE_HAL_WWDG_REGISTER_CALLBACKS 0U /* WWDG register callback disabled */
+
+/* ########################## Assert Selection ############################## */
+/**
+ * @brief Uncomment the line below to expanse the "assert_param" macro in the
+ * HAL drivers code
+ */
+/* #define USE_FULL_ASSERT 1U */
+
+/* ################## Ethernet peripheral configuration ##################### */
+
+/* Section 1 : Ethernet peripheral configuration */
+
+/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
+#define MAC_ADDR0 2U
+#define MAC_ADDR1 0U
+#define MAC_ADDR2 0U
+#define MAC_ADDR3 0U
+#define MAC_ADDR4 0U
+#define MAC_ADDR5 0U
+
+/* Definition of the Ethernet driver buffers size and count */
+#define ETH_RX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for receive */
+#define ETH_TX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for transmit */
+#define ETH_RXBUFNB ((uint32_t)4U) /* 4 Rx buffers of size ETH_RX_BUF_SIZE */
+#define ETH_TXBUFNB ((uint32_t)4U) /* 4 Tx buffers of size ETH_TX_BUF_SIZE */
+
+/* Section 2: PHY configuration section */
+
+/* DP83848_PHY_ADDRESS Address*/
+#define DP83848_PHY_ADDRESS 0x01U
+/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
+#define PHY_RESET_DELAY 0x000000FFU
+/* PHY Configuration delay */
+#define PHY_CONFIG_DELAY 0x00000FFFU
+
+#define PHY_READ_TO 0x0000FFFFU
+#define PHY_WRITE_TO 0x0000FFFFU
+
+/* Section 3: Common PHY Registers */
+
+#define PHY_BCR ((uint16_t)0x0000) /*!< Transceiver Basic Control Register */
+#define PHY_BSR ((uint16_t)0x0001) /*!< Transceiver Basic Status Register */
+
+#define PHY_RESET ((uint16_t)0x8000) /*!< PHY Reset */
+#define PHY_LOOPBACK ((uint16_t)0x4000) /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M ((uint16_t)0x2100) /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M ((uint16_t)0x2000) /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M ((uint16_t)0x0100) /*!< Set the full-duplex mode at 10 Mb/s */
+#define PHY_HALFDUPLEX_10M ((uint16_t)0x0000) /*!< Set the half-duplex mode at 10 Mb/s */
+#define PHY_AUTONEGOTIATION ((uint16_t)0x1000) /*!< Enable auto-negotiation function */
+#define PHY_RESTART_AUTONEGOTIATION ((uint16_t)0x0200) /*!< Restart auto-negotiation function */
+#define PHY_POWERDOWN ((uint16_t)0x0800) /*!< Select the power down mode */
+#define PHY_ISOLATE ((uint16_t)0x0400) /*!< Isolate PHY from MII */
+
+#define PHY_AUTONEGO_COMPLETE ((uint16_t)0x0020) /*!< Auto-Negotiation process completed */
+#define PHY_LINKED_STATUS ((uint16_t)0x0004) /*!< Valid link established */
+#define PHY_JABBER_DETECTION ((uint16_t)0x0002) /*!< Jabber condition detected */
+
+/* Section 4: Extended PHY Registers */
+#define PHY_SR ((uint16_t)0x10U) /*!< PHY status register Offset */
+
+#define PHY_SPEED_STATUS ((uint16_t)0x0002U) /*!< PHY Speed mask */
+#define PHY_DUPLEX_STATUS ((uint16_t)0x0004U) /*!< PHY Duplex mask */
+
+/* ################## SPI peripheral configuration ########################## */
+
+/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
+ * Activated: CRC code is present inside driver
+ * Deactivated: CRC code cleaned from driver
+ */
+#ifndef USE_SPI_CRC
+#define USE_SPI_CRC 0U
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+/**
+ * @brief Include module's header file
+ */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+#include "stm32f4xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+#include "stm32f4xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+#include "stm32f4xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+#include "stm32f4xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+#include "stm32f4xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+#include "stm32f4xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+#include "stm32f4xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CAN_LEGACY_MODULE_ENABLED
+#include "stm32f4xx_hal_can_legacy.h"
+#endif /* HAL_CAN_LEGACY_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+#include "stm32f4xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_CRYP_MODULE_ENABLED
+#include "stm32f4xx_hal_cryp.h"
+#endif /* HAL_CRYP_MODULE_ENABLED */
+
+#ifdef HAL_DMA2D_MODULE_ENABLED
+#include "stm32f4xx_hal_dma2d.h"
+#endif /* HAL_DMA2D_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+#include "stm32f4xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_DCMI_MODULE_ENABLED
+#include "stm32f4xx_hal_dcmi.h"
+#endif /* HAL_DCMI_MODULE_ENABLED */
+
+#ifdef HAL_ETH_MODULE_ENABLED
+#include "stm32f4xx_hal_eth.h"
+#endif /* HAL_ETH_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+#include "stm32f4xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_SRAM_MODULE_ENABLED
+#include "stm32f4xx_hal_sram.h"
+#endif /* HAL_SRAM_MODULE_ENABLED */
+
+#ifdef HAL_NOR_MODULE_ENABLED
+#include "stm32f4xx_hal_nor.h"
+#endif /* HAL_NOR_MODULE_ENABLED */
+
+#ifdef HAL_NAND_MODULE_ENABLED
+#include "stm32f4xx_hal_nand.h"
+#endif /* HAL_NAND_MODULE_ENABLED */
+
+#ifdef HAL_PCCARD_MODULE_ENABLED
+#include "stm32f4xx_hal_pccard.h"
+#endif /* HAL_PCCARD_MODULE_ENABLED */
+
+#ifdef HAL_SDRAM_MODULE_ENABLED
+#include "stm32f4xx_hal_sdram.h"
+#endif /* HAL_SDRAM_MODULE_ENABLED */
+
+#ifdef HAL_HASH_MODULE_ENABLED
+#include "stm32f4xx_hal_hash.h"
+#endif /* HAL_HASH_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+#include "stm32f4xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_SMBUS_MODULE_ENABLED
+#include "stm32f4xx_hal_smbus.h"
+#endif /* HAL_SMBUS_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+#include "stm32f4xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+#include "stm32f4xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_LTDC_MODULE_ENABLED
+#include "stm32f4xx_hal_ltdc.h"
+#endif /* HAL_LTDC_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+#include "stm32f4xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RNG_MODULE_ENABLED
+#include "stm32f4xx_hal_rng.h"
+#endif /* HAL_RNG_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+#include "stm32f4xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_SAI_MODULE_ENABLED
+#include "stm32f4xx_hal_sai.h"
+#endif /* HAL_SAI_MODULE_ENABLED */
+
+#ifdef HAL_SD_MODULE_ENABLED
+#include "stm32f4xx_hal_sd.h"
+#endif /* HAL_SD_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+#include "stm32f4xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+#include "stm32f4xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+#include "stm32f4xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+#include "stm32f4xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+#include "stm32f4xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+#include "stm32f4xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+#include "stm32f4xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+#include "stm32f4xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+#include "stm32f4xx_hal_hcd.h"
+#endif /* HAL_HCD_MODULE_ENABLED */
+
+#ifdef HAL_DSI_MODULE_ENABLED
+#include "stm32f4xx_hal_dsi.h"
+#endif /* HAL_DSI_MODULE_ENABLED */
+
+#ifdef HAL_QSPI_MODULE_ENABLED
+#include "stm32f4xx_hal_qspi.h"
+#endif /* HAL_QSPI_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+#include "stm32f4xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_FMPI2C_MODULE_ENABLED
+#include "stm32f4xx_hal_fmpi2c.h"
+#endif /* HAL_FMPI2C_MODULE_ENABLED */
+
+#ifdef HAL_SPDIFRX_MODULE_ENABLED
+#include "stm32f4xx_hal_spdifrx.h"
+#endif /* HAL_SPDIFRX_MODULE_ENABLED */
+
+#ifdef HAL_DFSDM_MODULE_ENABLED
+#include "stm32f4xx_hal_dfsdm.h"
+#endif /* HAL_DFSDM_MODULE_ENABLED */
+
+#ifdef HAL_LPTIM_MODULE_ENABLED
+#include "stm32f4xx_hal_lptim.h"
+#endif /* HAL_LPTIM_MODULE_ENABLED */
+
+#ifdef HAL_MMC_MODULE_ENABLED
+#include "stm32f4xx_hal_mmc.h"
+#endif /* HAL_MMC_MODULE_ENABLED */
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief The assert_param macro is used for function's parameters check.
+ * @param expr If expr is false, it calls assert_failed function
+ * which reports the name of the source file and the source
+ * line number of the call that failed.
+ * If expr is true, it returns no value.
+ * @retval None
+ */
+#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+void assert_failed(uint8_t *file, uint32_t line);
+#else
+#define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_HAL_CONF_CUSTOM_H */
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/ldscript.ld b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/ldscript.ld
new file mode 100644
index 000000000000..881b72167ef1
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/ldscript.ld
@@ -0,0 +1,186 @@
+/*
+*****************************************************************************
+**
+** File : ldscript.ld
+**
+** Abstract : Linker script for STM32F401RETx Device with
+** 512KByte FLASH, 96KByte RAM
+**
+** Set heap size, stack size and stack location according
+** to application requirements.
+**
+** Set memory bank area and size if external memory is used.
+**
+** Target : STMicroelectronics STM32
+**
+**
+** Distribution: The file is distributed as is, without any warranty
+** of any kind.
+**
+*****************************************************************************
+** @attention
+**
+** © COPYRIGHT(c) 2014 Ac6
+**
+** Redistribution and use in source and binary forms, with or without modification,
+** are permitted provided that the following conditions are met:
+** 1. Redistributions of source code must retain the above copyright notice,
+** this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright notice,
+** this list of conditions and the following disclaimer in the documentation
+** and/or other materials provided with the distribution.
+** 3. Neither the name of Ac6 nor the names of its contributors
+** may be used to endorse or promote products derived from this software
+** without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+*****************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = 0x20010000; /* end of RAM */
+
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Specify the memory areas */
+MEMORY
+{
+FLASH (rx) : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
+RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
+}
+
+/* Define output sections */
+SECTIONS
+{
+ /* The startup code goes first into FLASH */
+ .isr_vector :
+ {
+ . = ALIGN(4);
+ KEEP(*(.isr_vector)) /* Startup code */
+ . = ALIGN(4);
+ } >FLASH
+
+ /* The program code and other data goes into FLASH */
+ .text ALIGN(4):
+ {
+ . = ALIGN(4);
+ *(.text) /* .text sections (code) */
+ *(.text*) /* .text* sections (code) */
+ *(.glue_7) /* glue arm to thumb code */
+ *(.glue_7t) /* glue thumb to arm code */
+ *(.eh_frame)
+
+ KEEP (*(.init))
+ KEEP (*(.fini))
+
+ . = ALIGN(4);
+ _etext = .; /* define a global symbols at end of code */
+ } >FLASH
+
+ /* Constant data goes into FLASH */
+ .rodata :
+ {
+ . = ALIGN(4);
+ *(.rodata) /* .rodata sections (constants, strings, etc.) */
+ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
+ . = ALIGN(4);
+ } >FLASH
+
+ .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+ .ARM : {
+ __exidx_start = .;
+ *(.ARM.exidx*)
+ __exidx_end = .;
+ } >FLASH
+
+ .preinit_array :
+ {
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP (*(.preinit_array*))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+ } >FLASH
+ .init_array :
+ {
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP (*(SORT(.init_array.*)))
+ KEEP (*(.init_array*))
+ PROVIDE_HIDDEN (__init_array_end = .);
+ } >FLASH
+ .fini_array :
+ {
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP (*(SORT(.fini_array.*)))
+ KEEP (*(.fini_array*))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+ } >FLASH
+
+ /* used by the startup to initialize data */
+ _sidata = LOADADDR(.data);
+
+ /* Initialized data sections goes into RAM, load LMA copy after code */
+ .data :
+ {
+ . = ALIGN(4);
+ _sdata = .; /* create a global symbol at data start */
+ *(.data) /* .data sections */
+ *(.data*) /* .data* sections */
+
+ . = ALIGN(4);
+ _edata = .; /* define a global symbol at data end */
+ } >RAM AT> FLASH
+
+
+ /* Uninitialized data section */
+ . = ALIGN(4);
+ .bss :
+ {
+ /* This is used by the startup in order to initialize the .bss secion */
+ _sbss = .; /* define a global symbol at bss start */
+ __bss_start__ = _sbss;
+ *(.bss)
+ *(.bss*)
+ *(COMMON)
+
+ . = ALIGN(4);
+ _ebss = .; /* define a global symbol at bss end */
+ __bss_end__ = _ebss;
+ } >RAM
+
+ /* User_heap_stack section, used to check that there is enough RAM left */
+ ._user_heap_stack :
+ {
+ . = ALIGN(8);
+ PROVIDE ( end = . );
+ PROVIDE ( _end = . );
+ . = . + _Min_Heap_Size;
+ . = . + _Min_Stack_Size;
+ . = ALIGN(8);
+ } >RAM
+
+
+
+ /* Remove information from the standard libraries */
+ /DISCARD/ :
+ {
+ libc.a ( * )
+ libm.a ( * )
+ libgcc.a ( * )
+ }
+
+ .ARM.attributes 0 : { *(.ARM.attributes) }
+}
\ No newline at end of file
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.cpp b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.cpp
new file mode 100644
index 000000000000..d603ad6ef1ab
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.cpp
@@ -0,0 +1,238 @@
+/*
+ Copyright (c) 2011 Arduino. All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include "pins_arduino.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Digital PinName array
+const PinName digitalPin[] = {
+ PA_0, // Digital pin 0
+ PA_1, // Digital pin 1
+ PA_2, // Digital pin 2
+ PA_3, // Digital pin 3
+ PA_4, // Digital pin 4
+ PA_5, // Digital pin 5
+ PA_6, // Digital pin 6
+ PA_7, // Digital pin 7
+ PA_8, // Digital pin 8
+ PA_9, // Digital pin 9
+ PA_10, // Digital pin 10
+ PA_11, // Digital pin 11
+ PA_12, // Digital pin 12
+ PA_13, // Digital pin 13
+ PA_14, // Digital pin 14
+ PA_15, // Digital pin 15
+
+ PB_0, // Digital pin 16
+ PB_1, // Digital pin 17
+ PB_2, // Digital pin 18
+ PB_3, // Digital pin 19
+ PB_4, // Digital pin 20
+ PB_5, // Digital pin 21
+ PB_6, // Digital pin 22
+ PB_7, // Digital pin 23
+ PB_8, // Digital pin 24
+ PB_9, // Digital pin 25
+ PB_10, // Digital pin 26
+ PB_12, // Digital pin 27
+ PB_13, // Digital pin 28
+ PB_14, // Digital pin 29
+ PB_15, // Digital pin 30
+
+ PC_0, // Digital pin 31
+ PC_1, // Digital pin 32
+ PC_2, // Digital pin 33
+ PC_3, // Digital pin 34
+ PC_4, // Digital pin 35
+ PC_5, // Digital pin 36
+ PC_6, // Digital pin 37
+ PC_7, // Digital pin 38
+ PC_8, // Digital pin 39
+ PC_9, // Digital pin 40
+ PC_10, // Digital pin 41
+ PC_11, // Digital pin 42
+ PC_12, // Digital pin 43
+ PC_13, // Digital pin 44
+ PC_14, // Digital pin 45
+ PC_15, // Digital pin 46
+
+ PD_2, // Digital pin 47
+
+ PH_0, // Digital pin 48, used by the external oscillator
+ PH_1 // Digital pin 49, used by the external oscillator
+};
+
+// Analog (Ax) pin number array
+const uint32_t analogInputPin[] = {
+ 0, // A0, PA0
+ 1, // A1, PA1
+ 2, // A2, PA2
+ 3, // A3, PA3
+ 4, // A4, PA4
+ 5, // A5, PA5
+ 6, // A6, PA6
+ 7, // A7, PA7
+ 16, // A8, PB0
+ 17, // A9, PB1
+ 31, // A10, PC0
+ 32, // A11, PC1
+ 33, // A12, PC2
+ 34, // A13, PC3
+ 35, // A14, PC4
+ 36 // A15, PC5
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+// ----------------------------------------------------------------------------
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * @brief Configures the System clock source, PLL Multiplier and Divider factors,
+ * AHB/APBx prescalers and Flash settings
+ * @note This function should be called only once the RCC clock configuration
+ * is reset to the default reset state (done in SystemInit() function).
+ * @param None
+ * @retval None
+ */
+
+/******************************************************************************/
+/* PLL (clocked by HSE) used as System clock source */
+/******************************************************************************/
+static uint8_t SetSysClock_PLL_HSE(uint8_t bypass)
+{
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ RCC_ClkInitTypeDef RCC_ClkInitStruct;
+
+ /* The voltage scaling allows optimizing the power consumption when the device is
+ clocked below the maximum system frequency, to update the voltage scaling value
+ regarding system frequency refer to product datasheet. */
+ __HAL_RCC_PWR_CLK_ENABLE();
+ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+ // Enable HSE oscillator and activate PLL with HSE as source
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ if (bypass == 0) {
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON; // External 8 MHz xtal on OSC_IN/OSC_OUT
+ } else {
+ RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; // External 8 MHz clock on OSC_IN
+ }
+
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLM = HSE_VALUE / 1000000L; // Expects an 8 MHz external clock by default. Redefine HSE_VALUE if not
+ RCC_OscInitStruct.PLL.PLLN = 336; // VCO output clock = 336 MHz (1 MHz * 336)
+ RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; // PLLCLK = 84 MHz (336 MHz / 4)
+ RCC_OscInitStruct.PLL.PLLQ = 7; // USB clock = 48 MHz (336 MHz / 7) --> OK for USB
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+ return 0; // FAIL
+ }
+
+ // Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 84 MHz
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 84 MHz
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; // 42 MHz
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 84 MHz
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
+ return 0; // FAIL
+ }
+
+ /* Output clock on MCO1 pin(PA8) for debugging purpose */
+ /*
+ if (bypass == 0)
+ HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_2); // 4 MHz
+ else
+ HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); // 8 MHz
+ */
+
+ return 1; // OK
+}
+
+/******************************************************************************/
+/* PLL (clocked by HSI) used as System clock source */
+/******************************************************************************/
+uint8_t SetSysClock_PLL_HSI(void)
+{
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ RCC_ClkInitTypeDef RCC_ClkInitStruct;
+
+ /* The voltage scaling allows optimizing the power consumption when the device is
+ clocked below the maximum system frequency, to update the voltage scaling value
+ regarding system frequency refer to product datasheet. */
+ __HAL_RCC_PWR_CLK_ENABLE();
+ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+ // Enable HSI oscillator and activate PLL with HSI as source
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+ RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
+ RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+ RCC_OscInitStruct.PLL.PLLM = 16; // VCO input clock = 1 MHz (16 MHz / 16)
+ RCC_OscInitStruct.PLL.PLLN = 336; // VCO output clock = 336 MHz (1 MHz * 336)
+ RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; // PLLCLK = 84 MHz (336 MHz / 4)
+ RCC_OscInitStruct.PLL.PLLQ = 7; // USB clock = 48 MHz (336 MHz / 7) --> freq is ok but not precise enough
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
+ return 0; // FAIL
+ }
+
+ /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
+ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; // 84 MHz
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; // 84 MHz
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; // 42 MHz
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; // 84 MHz
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) {
+ return 0; // FAIL
+ }
+
+ /* Output clock on MCO1 pin(PA8) for debugging purpose */
+ //HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSI, RCC_MCODIV_1); // 16 MHz
+
+ return 1; // OK
+}
+
+WEAK void SystemClock_Config(void)
+{
+ /* 1- If fail try to start with HSE and external xtal */
+ if (SetSysClock_PLL_HSE(0) == 0) {
+ /* 2- Try to start with HSE and external clock */
+ if (SetSysClock_PLL_HSE(1) == 0) {
+ /* 3- If fail start with HSI clock */
+ if (SetSysClock_PLL_HSI() == 0) {
+ Error_Handler();
+ }
+ }
+ }
+ /* Output clock on MCO2 pin(PC9) for debugging purpose */
+ //HAL_RCC_MCOConfig(RCC_MCO2, RCC_MCO2SOURCE_SYSCLK, RCC_MCODIV_4);
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.h b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.h
new file mode 100644
index 000000000000..591571bf2c89
--- /dev/null
+++ b/buildroot/share/PlatformIO/variants/MARLIN_CREALITY_STM32F401RE/variant.h
@@ -0,0 +1,151 @@
+/*
+ Copyright (c) 2011 Arduino. All right reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef _VARIANT_ARDUINO_STM32_
+#define _VARIANT_ARDUINO_STM32_
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+
+// | DIGITAL | ANALOG | USART | TWI | SPI | SPECIAL |
+// |---------|--------|-----------|----------|------------------------|-----------|
+#define PA0 0 // | 0 | A0 | | | | |
+#define PA1 1 // | 1 | A1 | | | | |
+#define PA2 2 // | 2 | A2 | USART2_TX | | | |
+#define PA3 3 // | 3 | A3 | USART2_RX | | | |
+#define PA4 4 // | 4 | A4 | | | SPI1_SS, (SPI3_SS) | |
+#define PA5 5 // | 5 | A5 | | | SPI1_SCK | |
+#define PA6 6 // | 6 | A6 | | | SPI1_MISO | |
+#define PA7 7 // | 7 | A7 | | | SPI1_MOSI | |
+#define PA8 8 // | 8 | | | TWI3_SCL | | |
+#define PA9 9 // | 9 | | USART1_TX | | | |
+#define PA10 10 // | 10 | | USART1_RX | | | |
+#define PA11 11 // | 11 | | USART6_TX | | | |
+#define PA12 12 // | 12 | | USART6_RX | | | |
+#define PA13 13 // | 13 | | | | | SWD_SWDIO |
+#define PA14 14 // | 14 | | | | | SWD_SWCLK |
+#define PA15 15 // | 15 | | | | SPI3_SS, (SPI1_SS) | |
+// |---------|--------|-----------|----------|------------------------|-----------|
+#define PB0 16 // | 16 | A8 | | | | |
+#define PB1 17 // | 17 | A9 | | | | |
+#define PB2 18 // | 18 | | | | | BOOT1 |
+#define PB3 19 // | 19 | | | TWI2_SDA | SPI3_SCK, (SPI1_SCK) | |
+#define PB4 20 // | 20 | | | TWI3_SDA | SPI3_MISO, (SPI1_MISO) | |
+#define PB5 21 // | 21 | | | | SPI3_MOSI, (SPI1_MOSI) | |
+#define PB6 22 // | 22 | | USART1_TX | TWI1_SCL | | |
+#define PB7 23 // | 23 | | USART1_RX | TWI1_SDA | | |
+#define PB8 24 // | 24 | | | TWI1_SCL | | |
+#define PB9 25 // | 25 | | | TWI1_SDA | SPI2_SS | |
+#define PB10 26 // | 26 | | | TWI2_SCL | SPI2_SCK | |
+#define PB12 27 // | 27 | | | | SPI2_SS | |
+#define PB13 28 // | 28 | | | | SPI2_SCK | |
+#define PB14 29 // | 29 | | | | SPI2_MISO | |
+#define PB15 30 // | 30 | | | | SPI2_MOSI | |
+// |---------|--------|-----------|----------|------------------------|-----------|
+#define PC0 31 // | 31 | A10 | | | | |
+#define PC1 32 // | 32 | A11 | | | | |
+#define PC2 33 // | 33 | A12 | | | SPI2_MISO | |
+#define PC3 34 // | 34 | A13 | | | SPI2_MOSI | |
+#define PC4 35 // | 35 | A14 | | | | |
+#define PC5 36 // | 36 | A15 | | | | |
+#define PC6 37 // | 37 | | USART6_TX | | | |
+#define PC7 38 // | 38 | | USART6_RX | | | |
+#define PC8 39 // | 39 | | | | | |
+#define PC9 40 // | 40 | | | TWI3_SDA | | |
+#define PC10 41 // | 41 | | | | SPI3_SCK | |
+#define PC11 42 // | 42 | | | | SPI3_MISO | |
+#define PC12 43 // | 43 | | | | SPI3_MOSI | |
+#define PC13 44 // | 44 | | | | | |
+#define PC14 45 // | 45 | | | | | OSC32_IN |
+#define PC15 46 // | 46 | | | | | OSC32_OUT |
+// |---------|--------|-----------|----------|------------------------|-----------|
+#define PD2 47 // | 47 | | | | | |
+// |---------|--------|-----------|----------|------------------------|-----------|
+#define PH0 48 // | 48 | | | | | OSC_IN |
+#define PH1 49 // | 49 | | | | | OSC_OUT |
+// |---------|--------|-----------|----------|------------------------|-----------|
+
+// This must be a literal
+#define NUM_DIGITAL_PINS 50
+#define NUM_ANALOG_INPUTS 16
+
+// SPI definitions
+#define PIN_SPI_SS PA4
+#define PIN_SPI_SS1 PA4
+#define PIN_SPI_MOSI PA7
+#define PIN_SPI_MISO PA6
+#define PIN_SPI_SCK PA5
+
+
+// Timer Definitions
+#define TIMER_TONE TIM2
+#define TIMER_SERVO TIM11
+#define TIMER_SERIAL TIM5
+
+// UART Definitions
+//#define ENABLE_HWSERIAL1 done automatically by the #define SERIAL_UART_INSTANCE below
+#define ENABLE_HWSERIAL2
+
+
+// Define here Serial instance number to map on Serial generic name (if not already used by SerialUSB)
+#define SERIAL_UART_INSTANCE 1 //1 for Serial = Serial1 (USART1)
+
+// Default pin used for 'Serial' instance
+// Mandatory for Firmata
+#define PIN_SERIAL_RX PA10
+#define PIN_SERIAL_TX PA9
+
+// Used when user instanciate a hardware Serial using its peripheral name.
+// Example: HardwareSerial mySerial(USART3);
+// will use PIN_SERIAL3_RX and PIN_SERIAL3_TX if defined.
+#define PIN_SERIAL1_RX PA10
+#define PIN_SERIAL1_TX PA9
+#define PIN_SERIAL2_RX PA3
+#define PIN_SERIAL2_TX PA2
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+/*----------------------------------------------------------------------------
+ * Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+ // These serial port names are intended to allow libraries and architecture-neutral
+ // sketches to automatically default to the correct port name for a particular type
+ // of use. For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
+ // the first hardware serial port whose RX/TX pins are not dedicated to another use.
+ //
+ // SERIAL_PORT_MONITOR Port which normally prints to the Arduino Serial Monitor
+ //
+ // SERIAL_PORT_USBVIRTUAL Port which is USB virtual serial
+ //
+ // SERIAL_PORT_LINUXBRIDGE Port which connects to a Linux system via Bridge library
+ //
+ // SERIAL_PORT_HARDWARE Hardware serial port, physical RX & TX pins.
+ //
+ // SERIAL_PORT_HARDWARE_OPEN Hardware serial ports which are open for use. Their RX & TX
+ // pins are NOT connected to anything by default.
+ #define SERIAL_PORT_MONITOR Serial
+ #define SERIAL_PORT_HARDWARE Serial1
+ #define SERIAL_PORT_HARDWARE_OPEN Serial2
+#endif
+
+#endif /* _VARIANT_ARDUINO_STM32_ */
diff --git a/ini/features.ini b/ini/features.ini
index 6a77c11c1238..e0f6254d08de 100644
--- a/ini/features.ini
+++ b/ini/features.ini
@@ -206,6 +206,7 @@ CONTROLLER_FAN_EDITABLE = src_filter=+
GCODE_MACROS = src_filter=+
GRADIENT_MIX = src_filter=+
+OTA_FIRMWARE_UPDATE = src_filter=+
HAS_SAVED_POSITIONS = src_filter=+ +
PARK_HEAD_ON_PAUSE = src_filter=+
FILAMENT_LOAD_UNLOAD_GCODES = src_filter=+