BigTreeTech SKR Mini v1.1 (#14041)

Marlin/src/core/boards.h

@@ -245,6 +245,7 @@
 #define BOARD_GTM32_PRO_VB     1805   // STM32f103VET6 controller
 #define BOARD_MORPHEUS         1806   // STM32F103C8/STM32F103CB Libmaple based stm32f1 controller
 #define BOARD_MKS_ROBIN        1808   // MKS Robin / STM32F103ZET6
+#define BOARD_BIGTREE_SKR_MINI_V1_1 1814 // STM32F103RC
 
 //
 // STM32 ARM Cortex-M4F

Marlin/src/pins/pins.h

@@ -414,6 +414,8 @@
   #include "pins_STM32F1R.h"          // STM32F1                                    env:STM32F1
 #elif MB(STM3R_MINI)
   #include "pins_STM3R_MINI.h"        // STM32F1                                    env:STM32F1
+#elif MB(BIGTREE_SKR_MINI_V1_1)
+  #include "pins_BIGTREE_SKR_MINI_V1_1.h" // STM32F1                                env:BIGTREE_SKR_MINI
 #elif MB(MALYAN_M200)
   #include "pins_MALYAN_M200.h"       // STM32F1                                    env:malyanm200
 #elif MB(CHITU3D)

Marlin/src/pins/pins_BIGTREE_SKR_MINI_V1_1.h

@@ -0,0 +1,134 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef TARGET_STM32F1
+  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
+#endif
+
+#ifndef BOARD_NAME
+  #define BOARD_NAME "BIGTREE SKR mini V1.1"
+#endif
+
+// Ignore temp readings during develpment.
+//#define BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
+
+//
+// Limit Switches
+//
+#define X_MIN_PIN          PC2
+#define X_MAX_PIN          PA2
+#define Y_MIN_PIN          PC1
+#define Y_MAX_PIN          PA1
+#define Z_MIN_PIN          PC0
+#define Z_MAX_PIN          PC3
+
+//
+// Steppers
+//
+
+/**
+ * TODO: Currently using same Enable pin for all steppers.
+ */
+
+#define X_STEP_PIN         PC6
+#define X_DIR_PIN          PC7
+#define X_ENABLE_PIN       PB15
+
+#define Y_STEP_PIN         PB13
+#define Y_DIR_PIN          PB14
+#define Y_ENABLE_PIN       PB12
+
+#define Z_STEP_PIN         PB10
+#define Z_DIR_PIN          PB11
+#define Z_ENABLE_PIN       PB2
+
+#define E0_STEP_PIN        PC5
+#define E0_DIR_PIN         PB0
+#define E0_ENABLE_PIN      PC4
+
+#if ENABLED(TMC_USE_SW_SPI)
+  #define TMC_SW_SCK       PB3
+  #define TMC_SW_MISO      PB4
+  #define TMC_SW_MOSI      PB5
+#endif
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN       PA8
+#define FAN_PIN            PC8
+#define HEATER_BED_PIN     PC9
+
+//
+// Temperature Sensors
+//
+#define TEMP_BED_PIN         PB1   // Analog Input
+#define TEMP_0_PIN           PA0   // Analog Input
+
+//
+// LCD Pins
+//
+
+/**
+ *               _____                                             _____
+ *           NC | · · | GND                                    5V | · · | GND
+ *        RESET | · · | 1.31(SD_DETECT)             (LCD_D7) 1.23 | · · | 1.22 (LCD_D6)
+ *   (MOSI)0.18 | · · | 3.25(BTN_EN2)               (LCD_D5) 1.21 | · · | 1.20 (LCD_D4)
+ *  (SD_SS)0.16 | · · | 3.26(BTN_EN1)               (LCD_RS) 1.19 | · · | 1.18 (LCD_EN)
+ *    (SCK)0.15 | · · | 0.17(MISO)                 (BTN_ENC) 0.28 | · · | 1.30 (BEEPER)
+ *               ￣￣                                               ￣￣
+ *               EXP2                                              EXP1
+ */
+
+#if ENABLED(ULTRA_LCD)
+
+  #define BEEPER_PIN       PC10
+  #define BTN_ENC          PC11
+  #define LCD_PINS_RS      PC12
+
+  #define BTN_EN1          PD2
+  #define BTN_EN2          PB8
+
+  #define LCD_PINS_ENABLE  PB6
+  #define LCD_PINS_D4      PC13
+
+  #if ENABLED(ULTIPANEL)
+    #define LCD_PINS_D5    PB7
+    #define LCD_PINS_D6    PC15
+    #define LCD_PINS_D7    PC14
+  #endif
+
+#endif // ULTRA_LCD
+
+//
+// SD Card
+//
+
+// Marlin uses the SD drive attached to the LCD
+//#define STM32_SD_LCD
+
+#ifdef STM32_SD_LCD
+  #define SD_DETECT_PIN    PB9
+  #define ENABLE_SPI3
+#else
+  #define SD_DETECT_PIN    PA3
+#endif

buildroot/share/PlatformIO/ldscripts/STM32F1_SKR_MINI.ld

@@ -0,0 +1,14 @@
+MEMORY
+{
+  ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K - 40
+  rom (rx)  : ORIGIN = 0x08007000, LENGTH = 256K - 28K
+}
+
+/* Provide memory region aliases for common.inc */
+REGION_ALIAS("REGION_TEXT", rom);
+REGION_ALIAS("REGION_DATA", ram);
+REGION_ALIAS("REGION_BSS", ram);
+REGION_ALIAS("REGION_RODATA", rom);
+
+/* Let common.inc handle the real work. */
+INCLUDE common.inc

buildroot/share/PlatformIO/scripts/STM32F1_SKR_MINI.py

@@ -0,0 +1,8 @@
+Import("env")
+
+# Relocate firmware from 0x08000000 to 0x08007000
+for define in env['CPPDEFINES']:
+    if define[0] == "VECT_TAB_ADDR":
+        env['CPPDEFINES'].remove(define)
+env['CPPDEFINES'].append(("VECT_TAB_ADDR", "0x08007000"))
+env.Replace(LDSCRIPT_PATH="buildroot/share/PlatformIO/ldscripts/STM32F1_SKR_MINI.ld")

platformio.ini

@@ -272,6 +272,32 @@ lib_ldf_mode  = 1
 src_filter    = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
 monitor_speed = 250000
 
+#
+# BIGTREE_SKR_MINI
+#
+[env:BIGTREE_SKR_MINI]
+platform      = ststm32
+framework     = arduino
+board         = genericSTM32F103RC
+extra_scripts = buildroot/share/PlatformIO/scripts/STM32F1_SKR_MINI.py
+build_flags   = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
+  ${common.build_flags}
+  -g
+lib_deps      = ${common.lib_deps}
+lib_ignore    = U8glib-HAL
+  c1921b4
+  libf3c
+  lib066
+  Adafruit NeoPixel_ID28
+  Adafruit NeoPixel
+  libf3e
+  TMC26XStepper
+lib_ldf_mode  = 1
+src_filter    = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
+monitor_speed = 115200
+upload_protocol = stlink
+debug_tool = stlink
+
 #
 # STM32F4
 #