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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 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/>.
- *
- */
- #pragma once
-
- #ifndef TARGET_STM32F1
- #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
- #endif
-
- // Release PB3/PB4 (E0 STP/DIR) from JTAG pins
- #define DISABLE_JTAG
-
- // Ignore temp readings during development.
- //#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
-
- #define FLASH_EEPROM_EMULATION
- #define EEPROM_PAGE_SIZE uint16(0x800) // 2KB
- #define EEPROM_START_ADDRESS uint32(0x8000000 + (STM32_FLASH_SIZE) * 1024 - 2 * EEPROM_PAGE_SIZE)
- #undef E2END
- #define E2END (EEPROM_PAGE_SIZE - 1) // 2KB
-
- //
- // Servos
- //
- #define SERVO0_PIN PA1
-
- //
- // Limit Switches
- //
- #define X_STOP_PIN PC0
- #define Y_STOP_PIN PC1
- #define Z_STOP_PIN PC2
-
- //
- // Z Probe must be this pins
- //
- #define Z_MIN_PROBE_PIN PC14
-
- //
- // Filament Runout Sensor
- //
- #ifndef FIL_RUNOUT_PIN
- #define FIL_RUNOUT_PIN PC15 // "E0-STOP"
- #endif
-
- //
- // Steppers
- //
- #define X_ENABLE_PIN PB14
- #define X_STEP_PIN PB13
- #define X_DIR_PIN PB12
-
- #define Y_ENABLE_PIN PB11
- #define Y_STEP_PIN PB10
- #define Y_DIR_PIN PB2
-
- #define Z_ENABLE_PIN PB1
- #define Z_STEP_PIN PB0
- #define Z_DIR_PIN PC5
-
- #define E0_ENABLE_PIN PD2
- #define E0_STEP_PIN PB3
- #define E0_DIR_PIN PB4
-
- //
- // Temperature Sensors
- //
- #define TEMP_0_PIN PA0 // Analog Input
- #define TEMP_BED_PIN PC3 // Analog Input
-
- //
- // Heaters / Fans
- //
- #define HEATER_0_PIN PC8 // EXTRUDER
- #define HEATER_BED_PIN PC9 // BED
- #define FAN_PIN PA8
-
- //
- // USB connect control
- //
- #define USB_CONNECT_PIN PC13
- #define USB_CONNECT_INVERTING false
-
- #define SD_DETECT_PIN PC4
-
- /**
- * _____
- * 5V | 1 2 | GND
- * (LCD_EN) PB7 | 3 4 | PB8 (LCD_RS)
- * (LCD_D4) PB9 | 5 6 PA10 (BTN_EN2)
- * RESET | 7 8 | PA9 (BTN_EN1)
- * (BTN_ENC) PB6 | 9 10| PB5 (BEEPER)
- * -----
- * EXP1
- */
-
- #define EXPA1_03_PIN PB7
- #define EXPA1_04_PIN PB8
- #define EXPA1_05_PIN PB9
- #define EXPA1_06_PIN PA10
- #define EXPA1_07_PIN -1
- #define EXPA1_08_PIN PA9
- #define EXPA1_09_PIN PB6
- #define EXPA1_10_PIN PB5
-
- #if HAS_SPI_LCD
-
- #if ENABLED(CR10_STOCKDISPLAY)
-
- #define BEEPER_PIN EXPA1_10_PIN
-
- #define BTN_EN1 EXPA1_08_PIN
- #define BTN_EN2 EXPA1_06_PIN
- #define BTN_ENC EXPA1_09_PIN
-
- #define LCD_PINS_RS EXPA1_04_PIN
- #define LCD_PINS_ENABLE EXPA1_03_PIN
- #define LCD_PINS_D4 EXPA1_05_PIN
-
- #elif ENABLED(ZONESTAR_LCD) // ANET A8 LCD Controller - Must convert to 3.3V - CONNECTING TO 5V WILL DAMAGE THE BOARD!
-
- #error "CAUTION! ZONESTAR_LCD requires wiring modifications. See 'pins_BTT_SKR_MINI_E3.h' for details. Comment out this line to continue."
-
- #define LCD_PINS_RS EXPA1_05_PIN
- #define LCD_PINS_ENABLE EXPA1_09_PIN
- #define LCD_PINS_D4 EXPA1_04_PIN
- #define LCD_PINS_D5 EXPA1_06_PIN
- #define LCD_PINS_D6 EXPA1_08_PIN
- #define LCD_PINS_D7 EXPA1_10_PIN
- #define ADC_KEYPAD_PIN PA1 // Repurpose servo pin for ADC - CONNECTING TO 5V WILL DAMAGE THE BOARD!
-
- #elif EITHER(MKS_MINI_12864, ENDER2_STOCKDISPLAY)
-
- /** Creality Ender-2 display pinout
- * _____
- * 5V | 1 2 | GND
- * (MOSI) PB7 | 3 4 | PB8 (LCD_RS)
- * (LCD_A0) PB9 | 5 6 PA10 (BTN_EN2)
- * RESET | 7 8 | PA9 (BTN_EN1)
- * (BTN_ENC) PB6 | 9 10| PB5 (SCK)
- * -----
- * EXP1
- */
- #define BTN_EN1 EXPA1_08_PIN
- #define BTN_EN2 EXPA1_06_PIN
- #define BTN_ENC EXPA1_09_PIN
-
- #define DOGLCD_CS EXPA1_04_PIN
- #define DOGLCD_A0 EXPA1_05_PIN
- #define DOGLCD_SCK EXPA1_10_PIN
- #define DOGLCD_MOSI EXPA1_03_PIN
- #define FORCE_SOFT_SPI
- #define LCD_BACKLIGHT_PIN -1
-
- #else
-
- #error "Only ZONESTAR_LCD, MKS_MINI_12864, ENDER2_STOCKDISPLAY, and CR10_STOCKDISPLAY are currently supported on the BIGTREE_SKR_MINI_E3."
-
- #endif
-
- #endif // HAS_SPI_LCD
-
- //
- // SD Support
- //
- #define HAS_ONBOARD_SD
-
- #ifndef SDCARD_CONNECTION
- #define SDCARD_CONNECTION ONBOARD
- #endif
-
- #define ON_BOARD_SPI_DEVICE 1 // SPI1
- #define ONBOARD_SD_CS_PIN PA4 // Chip select for "System" SD card
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