Initial BigTreeTech Octopus (STM32F446ZE) Support

Author: thisiskeithb

Marlin/src/core/boards.h

@@ -370,20 +370,22 @@
 #define BOARD_BTT_SKR_V2_0_REV_A      4211  // BigTreeTech SKR v2.0 Rev A (STM32F407VGT6)
 #define BOARD_BTT_SKR_V2_0_REV_B      4212  // BigTreeTech SKR v2.0 Rev B (STM32F407VGT6)
 #define BOARD_BTT_GTR_V1_0            4213  // BigTreeTech GTR v1.0 (STM32F407IGT)
-#define BOARD_LERDGE_K                4214  // Lerdge K (STM32F407ZG)
-#define BOARD_LERDGE_S                4215  // Lerdge S (STM32F407VE)
-#define BOARD_LERDGE_X                4216  // Lerdge X (STM32F407VE)
-#define BOARD_VAKE403D                4217  // VAkE 403D (STM32F446VET6)
-#define BOARD_FYSETC_S6               4218  // FYSETC S6 (STM32F446VET6)
-#define BOARD_FYSETC_S6_V2_0          4219  // FYSETC S6 v2.0 (STM32F446VET6)
-#define BOARD_FYSETC_SPIDER           4220  // FYSETC Spider (STM32F446VET6)
-#define BOARD_FLYF407ZG               4221  // FLYF407ZG (STM32F407ZG)
-#define BOARD_MKS_ROBIN2              4222  // MKS_ROBIN2 (STM32F407ZE)
-#define BOARD_MKS_ROBIN_PRO_V2        4223  // MKS Robin Pro V2 (STM32F407VE)
-#define BOARD_MKS_ROBIN_NANO_V3       4224  // MKS Robin Nano V3 (STM32F407VG)
-#define BOARD_ANET_ET4                4225  // ANET ET4 V1.x (STM32F407VGT6)
-#define BOARD_ANET_ET4P               4226  // ANET ET4P V1.x (STM32F407VGT6)
-#define BOARD_FYSETC_CHEETAH_V20      4227  // FYSETC Cheetah V2.0
+#define BOARD_BTT_OCTOPUS_V1_0        4214  // BigTreeTech Octopus v1.0 (STM32F446ZET6)
+#define BOARD_LERDGE_K                4215  // Lerdge K (STM32F407ZG)
+#define BOARD_LERDGE_S                4216  // Lerdge S (STM32F407VE)
+#define BOARD_LERDGE_X                4217  // Lerdge X (STM32F407VE)
+#define BOARD_VAKE403D                4218  // VAkE 403D (STM32F446VET6)
+#define BOARD_FYSETC_S6               4219  // FYSETC S6 (STM32F446VET6)
+#define BOARD_FYSETC_S6_V2_0          4220  // FYSETC S6 v2.0 (STM32F446VET6)
+#define BOARD_FYSETC_SPIDER           4221  // FYSETC Spider (STM32F446VET6)
+#define BOARD_FLYF407ZG               4222  // FLYF407ZG (STM32F407ZG)
+#define BOARD_MKS_ROBIN2              4223  // MKS_ROBIN2 (STM32F407ZE)
+#define BOARD_MKS_ROBIN_PRO_V2        4224  // MKS Robin Pro V2 (STM32F407VE)
+#define BOARD_MKS_ROBIN_NANO_V3       4225  // MKS Robin Nano V3 (STM32F407VG)
+#define BOARD_ANET_ET4                4226  // ANET ET4 V1.x (STM32F407VGT6)
+#define BOARD_ANET_ET4P               4227  // ANET ET4P V1.x (STM32F407VGT6)
+#define BOARD_FYSETC_CHEETAH_V20      4228  // FYSETC Cheetah V2.0
+
 
 //
 // ARM Cortex M7

Marlin/src/pins/pins.h

@@ -600,6 +600,8 @@
   #include "stm32f4/pins_BTT_SKR_V2_0_REV_A.h"  // STM32F4                                env:BIGTREE_SKR_2
 #elif MB(BTT_SKR_V2_0_REV_B)
   #include "stm32f4/pins_BTT_SKR_V2_0_REV_B.h"  // STM32F4                                env:BIGTREE_SKR_2
+#elif MB(BTT_OCTOPUS_V1_0)
+  #include "stm32f4/pins_BTT_OCTOPUS_V1_0.h"    // STM32F4                                env:BIGTREE_OCTOPUS_V1_0 env:BIGTREE_OCTOPUS_V1_0_USB
 #elif MB(LERDGE_K)
   #include "stm32f4/pins_LERDGE_K.h"            // STM32F4                                env:LERDGEK env:LERDGEK_usb_flash_drive
 #elif MB(LERDGE_S)