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📌 PandaPi V2.9 – Standalone mode (MarlinFirmware#23908)
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‎Marlin/src/core/boards.h

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#define BOARD_ZONESTAR_ZM3E4 4061 // Zonestar ZM3E4 V1 (STM32F103VC)
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#define BOARD_ZONESTAR_ZM3E4V2 4062 // Zonestar ZM3E4 V2 (STM32F103VC)
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#define BOARD_ERYONE_ERY32_MINI 4063 // Eryone Ery32 mini (STM32F103VE)
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#define BOARD_PANDA_PI_V29 4064 // Panda Pi V2.9 - Standalone (STM32F103RC)
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//
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// ARM Cortex-M4F

‎Marlin/src/pins/pins.h

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#include "stm32f1/pins_ZM3E4_V2_0.h" // STM32F1 env:STM32F103VE_ZM3E4V2_USB env:STM32F103VE_ZM3E4V2_USB_maple
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#elif MB(ERYONE_ERY32_MINI)
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#include "stm32f1/pins_ERYONE_ERY32_MINI.h" // STM32F103VET6 env:ERYONE_ERY32_MINI_maple
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#elif MB(PANDA_PI_V29)
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#include "stm32f1/pins_PANDA_PI_V29.h" // STM32F103RCT6 env:PANDA_PI_V29
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//
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// ARM Cortex-M4F

‎Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h

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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2022 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include "env_validate.h"
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#define BOARD_INFO_NAME "PANDA PI V2.9"
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// Release PB3/PB4 (TMC_SW Pins) from JTAG pins
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#define DISABLE_JTAG
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// Ignore temp readings during development.
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//#define BOGUS_TEMPERATURE_GRACE_PERIOD 2000
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#if EITHER(NO_EEPROM_SELECTED, FLASH_EEPROM_EMULATION)
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#define FLASH_EEPROM_EMULATION
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#define EEPROM_PAGE_SIZE (0x800U) // 2KB
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#define EEPROM_START_ADDRESS (0x8000000UL + (STM32_FLASH_SIZE) * 1024UL - (EEPROM_PAGE_SIZE) * 2UL)
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#define MARLIN_EEPROM_SIZE EEPROM_PAGE_SIZE // 2KB
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#endif
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//
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// Servos
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//
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#define SERVO0_PIN PA11 // SERVOS
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//
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// Limit Switches
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//
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#define X_STOP_PIN PA3 // X-STOP
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#define Y_STOP_PIN PC9 // Y-STOP
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#define Z_STOP_PIN PA1 // Z-STOP
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//
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// Z Probe must be this pin
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//
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//#define Z_MIN_PROBE_PIN PA1 // PROBE
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//
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// Filament Runout Sensor
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//
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//#ifndef FIL_RUNOUT_PIN
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// #define FIL_RUNOUT_PIN PC2 // E0-STOP
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//#endif
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//
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// Steppers
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//
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#define X_ENABLE_PIN PC12
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#define X_STEP_PIN PC11
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#define X_DIR_PIN PB6
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#define Y_ENABLE_PIN PC12
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#define Y_STEP_PIN PB5
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#define Y_DIR_PIN PB4
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#define Z_ENABLE_PIN PC12
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#define Z_STEP_PIN PB3
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#define Z_DIR_PIN PA15
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#define E0_ENABLE_PIN PC12
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#define E0_STEP_PIN PB15
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#define E0_DIR_PIN PB14
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//
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// Software SPI pins for TMC2130 stepper drivers
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//
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#if ENABLED(TMC_USE_SW_SPI)
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#ifndef TMC_SW_MOSI
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#define TMC_SW_MOSI PB5
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#endif
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#ifndef TMC_SW_MISO
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#define TMC_SW_MISO PB4
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#endif
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#ifndef TMC_SW_SCK
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#define TMC_SW_SCK PB3
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#endif
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#endif
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#if HAS_TMC_UART
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/**
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* TMC2208/TMC2209 stepper drivers
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*
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* Hardware serial communication ports.
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* If undefined software serial is used according to the pins below
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*/
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//#define X_HARDWARE_SERIAL MSerial1
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//#define Y_HARDWARE_SERIAL MSerial1
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//#define Z_HARDWARE_SERIAL MSerial1
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//#define E0_HARDWARE_SERIAL MSerial1
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#define X_SERIAL_TX_PIN PC10
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#define X_SERIAL_RX_PIN X_SERIAL_TX_PIN
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#define Y_SERIAL_TX_PIN PC11
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#define Y_SERIAL_RX_PIN Y_SERIAL_TX_PIN
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#define Z_SERIAL_TX_PIN PC12
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#define Z_SERIAL_RX_PIN Z_SERIAL_TX_PIN
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#define E0_SERIAL_TX_PIN PD2
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#define E0_SERIAL_RX_PIN E0_SERIAL_TX_PIN
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// Reduce baud rate to improve software serial reliability
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#define TMC_BAUD_RATE 19200
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#endif
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//
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// Temperature Sensors
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//
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#define TEMP_0_PIN PB0 // Analog Input "TH0"
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#define TEMP_BED_PIN PB1 // Analog Input "TB0"
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#define TEMP_1_PIN PA2
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//
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// Heaters / Fans
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//
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#define HEATER_0_PIN PB12 // "HE"
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#define HEATER_BED_PIN PB13 // "HB"
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#define FAN_PIN PA8 // "FAN0"
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#define HEATER_1_PIN PA12
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//
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// SD Support
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//
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#define ONBOARD_SPI_DEVICE 1 // SPI1
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#define ONBOARD_SD_CS_PIN PA4 // Chip select for "System" SD card
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#define SDSS ONBOARD_SD_CS_PIN
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#ifndef SDCARD_CONNECTION
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#define SDCARD_CONNECTION ONBOARD
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#endif
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#if SD_CONNECTION_IS(ONBOARD)
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//#define SD_DETECT_PIN PA4
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#define SD_SCK_PIN PA5
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#define SD_MISO_PIN PA6
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#define SD_MOSI_PIN PA7
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#elif SD_CONNECTION_IS(CUSTOM_CABLE)
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#error "SD CUSTOM_CABLE is not compatible with SKR E3 DIP."
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#endif
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//
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// LCD / Controller
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//
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#if HAS_WIRED_LCD
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#define BTN_ENC PA0
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#define BTN_EN1 PC4
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#define BTN_EN2 PC5
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#define LCD_PINS_RS PC0
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#define LCD_PINS_ENABLE PC2
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#define LCD_PINS_D4 PC1
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#endif
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#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
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#error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_BTT_SKR_E3_DIP.h' for details. Comment out this line to continue."
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/** FYSETC TFT TFT81050 display pinout
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*
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* Board Display
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* ----- -----
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* 5V | 1 2 | GND (SPI1-MISO) MISO | 1 2 | SCK (SPI1-SCK)
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* (FREE) PB7 | 3 4 | PB8 (LCD_CS) (PA9) MOD_RESET | 3 4 | SD_CS (PA10)
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* (FREE) PB9 | 5 6 PA10 (SD_CS) (PB8) LCD_CS | 5 6 MOSI (SPI1-MOSI)
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* RESET | 7 8 | PA9 (MOD_RESET) (PA15) SD_DET | 7 8 | RESET
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* (BEEPER) PB6 | 9 10| PA15 (SD_DET) GND | 9 10| 5V
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* ----- -----
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* EXP1 EXP1
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*
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* Needs custom cable:
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*
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* Board Adapter Display
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* _________
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* EXP1-1 ----------- EXP1-10
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* EXP1-2 ----------- EXP1-9
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* SPI1-4 ----------- EXP1-6
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* EXP1-4 ----------- EXP1-5
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* SP11-3 ----------- EXP1-2
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* EXP1-6 ----------- EXP1-4
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* EXP1-7 ----------- EXP1-8
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* EXP1-8 ----------- EXP1-3
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* SPI1-1 ----------- EXP1-1
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* EXP1-10 ----------- EXP1-7
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*/
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#define CLCD_SPI_BUS 1 // SPI1 connector
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#define BEEPER_PIN PB6
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#define CLCD_MOD_RESET PA9
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#define CLCD_SPI_CS PB8
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#if SD_CONNECTION_IS(LCD) && BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
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#define SD_DETECT_PIN PA15
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#define SD_SS_PIN PA10
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#endif
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#elif HAS_WIRED_LCD
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#define BEEPER_PIN PC3
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#endif

‎ini/stm32f1.ini

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-DUSBD_USE_CDC_MSC
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build_unflags = ${common_stm32.build_unflags} -DUSBD_USE_CDC
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#
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# Panda Pi V2.9 - Standalone (STM32F103RC)
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# Headless, without direct Pi control, but potentially hosting OctoPrint, stepdaemon, etc.
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#
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[env:PANDA_PI_V29]
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extends = common_STM32F103RC_variant
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build_flags = ${common_STM32F103RC_variant.build_flags}
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-DTIMER_SERVO=TIM1
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board_build.offset = 0x5000
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board_upload.offset_address = 0x08005000
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#
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# MKS Robin (STM32F103ZET6)
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# Uses HAL STM32 to support Marlin UI for TFT screen with optional touch panel

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