📌 PandaPi V2.9 – Standalone mode (#23908)

Marlin/src/core/boards.h

@@ -364,6 +364,7 @@
 #define BOARD_ZONESTAR_ZM3E4          4061  // Zonestar ZM3E4 V1 (STM32F103VC)
 #define BOARD_ZONESTAR_ZM3E4V2        4062  // Zonestar ZM3E4 V2 (STM32F103VC)
 #define BOARD_ERYONE_ERY32_MINI       4063  // Eryone Ery32 mini (STM32F103VE)
+#define BOARD_PANDA_PI_V29            4064  // Panda Pi V2.9 - Standalone (STM32F103RC)
 
 //
 // ARM Cortex-M4F

Marlin/src/pins/pins.h

@@ -601,6 +601,8 @@
   #include "stm32f1/pins_ZM3E4_V2_0.h"          // STM32F1                                env:STM32F103VE_ZM3E4V2_USB env:STM32F103VE_ZM3E4V2_USB_maple
 #elif MB(ERYONE_ERY32_MINI)
   #include "stm32f1/pins_ERYONE_ERY32_MINI.h"   // STM32F103VET6                          env:ERYONE_ERY32_MINI_maple
+#elif MB(PANDA_PI_V29)
+  #include "stm32f1/pins_PANDA_PI_V29.h"        // STM32F103RCT6                          env:PANDA_PI_V29
 
 //
 // ARM Cortex-M4F

Marlin/src/pins/stm32f1/pins_PANDA_PI_V29.h

@@ -0,0 +1,222 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "env_validate.h"
+ 
+#define BOARD_INFO_NAME "PANDA PI V2.9"
+
+// Release PB3/PB4 (TMC_SW Pins) from JTAG pins
+#define DISABLE_JTAG
+
+// Ignore temp readings during development.
+//#define BOGUS_TEMPERATURE_GRACE_PERIOD    2000
+
+#if EITHER(NO_EEPROM_SELECTED, FLASH_EEPROM_EMULATION)
+  #define FLASH_EEPROM_EMULATION
+  #define EEPROM_PAGE_SIZE     (0x800U)           // 2KB
+  #define EEPROM_START_ADDRESS (0x8000000UL + (STM32_FLASH_SIZE) * 1024UL - (EEPROM_PAGE_SIZE) * 2UL)
+  #define MARLIN_EEPROM_SIZE    EEPROM_PAGE_SIZE  // 2KB
+#endif
+
+//
+// Servos
+//
+#define SERVO0_PIN                          PA11  // SERVOS
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN                          PA3   // X-STOP
+#define Y_STOP_PIN                          PC9   // Y-STOP
+#define Z_STOP_PIN                          PA1   // Z-STOP
+
+//
+// Z Probe must be this pin
+//
+//#define Z_MIN_PROBE_PIN                   PA1   // PROBE
+
+//
+// Filament Runout Sensor
+//
+//#ifndef FIL_RUNOUT_PIN
+//  #define FIL_RUNOUT_PIN                  PC2   // E0-STOP
+//#endif
+
+//
+// Steppers
+//
+#define X_ENABLE_PIN                        PC12
+#define X_STEP_PIN                          PC11
+#define X_DIR_PIN                           PB6
+
+#define Y_ENABLE_PIN                        PC12
+#define Y_STEP_PIN                          PB5
+#define Y_DIR_PIN                           PB4
+
+#define Z_ENABLE_PIN                        PC12
+#define Z_STEP_PIN                          PB3
+#define Z_DIR_PIN                           PA15
+
+#define E0_ENABLE_PIN                       PC12
+#define E0_STEP_PIN                         PB15
+#define E0_DIR_PIN                          PB14
+
+//
+// Software SPI pins for TMC2130 stepper drivers
+//
+#if ENABLED(TMC_USE_SW_SPI)
+  #ifndef TMC_SW_MOSI
+    #define TMC_SW_MOSI                     PB5
+  #endif
+  #ifndef TMC_SW_MISO
+    #define TMC_SW_MISO                     PB4
+  #endif
+  #ifndef TMC_SW_SCK
+    #define TMC_SW_SCK                      PB3
+  #endif
+#endif
+
+#if HAS_TMC_UART
+  /**
+   * TMC2208/TMC2209 stepper drivers
+   *
+   * Hardware serial communication ports.
+   * If undefined software serial is used according to the pins below
+   */
+  //#define X_HARDWARE_SERIAL  MSerial1
+  //#define Y_HARDWARE_SERIAL  MSerial1
+  //#define Z_HARDWARE_SERIAL  MSerial1
+  //#define E0_HARDWARE_SERIAL MSerial1
+
+  #define X_SERIAL_TX_PIN                   PC10
+  #define X_SERIAL_RX_PIN        X_SERIAL_TX_PIN
+
+  #define Y_SERIAL_TX_PIN                   PC11
+  #define Y_SERIAL_RX_PIN        Y_SERIAL_TX_PIN
+
+  #define Z_SERIAL_TX_PIN                   PC12
+  #define Z_SERIAL_RX_PIN        Z_SERIAL_TX_PIN
+
+  #define E0_SERIAL_TX_PIN                  PD2
+  #define E0_SERIAL_RX_PIN      E0_SERIAL_TX_PIN
+
+  // Reduce baud rate to improve software serial reliability
+  #define TMC_BAUD_RATE                    19200
+#endif
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN                          PB0   // Analog Input "TH0"
+#define TEMP_BED_PIN                        PB1   // Analog Input "TB0"
+#define TEMP_1_PIN                          PA2
+
+//
+// Heaters / Fans
+//
+#define HEATER_0_PIN                        PB12  // "HE"
+#define HEATER_BED_PIN                      PB13  // "HB"
+#define FAN_PIN                             PA8   // "FAN0"
+#define HEATER_1_PIN                        PA12
+
+//
+// SD Support
+//
+#define ONBOARD_SPI_DEVICE                     1  // SPI1
+#define ONBOARD_SD_CS_PIN                   PA4   // Chip select for "System" SD card
+#define SDSS                   ONBOARD_SD_CS_PIN
+
+#ifndef SDCARD_CONNECTION
+  #define SDCARD_CONNECTION              ONBOARD
+#endif
+#if SD_CONNECTION_IS(ONBOARD)
+  //#define SD_DETECT_PIN                   PA4
+  #define SD_SCK_PIN                        PA5
+  #define SD_MISO_PIN                       PA6
+  #define SD_MOSI_PIN                       PA7
+#elif SD_CONNECTION_IS(CUSTOM_CABLE)
+  #error "SD CUSTOM_CABLE is not compatible with SKR E3 DIP."
+#endif
+
+//
+// LCD / Controller
+//
+#if HAS_WIRED_LCD
+  #define BTN_ENC                           PA0
+  #define BTN_EN1                           PC4
+  #define BTN_EN2                           PC5
+
+  #define LCD_PINS_RS                       PC0
+  #define LCD_PINS_ENABLE                   PC2
+  #define LCD_PINS_D4                       PC1
+#endif
+
+#if BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+
+  #error "CAUTION! LCD_FYSETC_TFT81050 requires wiring modifications. See 'pins_BTT_SKR_E3_DIP.h' for details. Comment out this line to continue."
+
+  /** FYSETC TFT TFT81050 display pinout
+   *
+   *               Board                                     Display
+   *               -----                                      -----
+   *           5V | 1 2 | GND               (SPI1-MISO) MISO | 1 2 | SCK   (SPI1-SCK)
+   * (FREE)   PB7 | 3 4 | PB8  (LCD_CS)     (PA9)  MOD_RESET | 3 4 | SD_CS (PA10)
+   * (FREE)   PB9 | 5 6   PA10 (SD_CS)      (PB8)     LCD_CS | 5 6   MOSI  (SPI1-MOSI)
+   *        RESET | 7 8 | PA9  (MOD_RESET)  (PA15)    SD_DET | 7 8 | RESET
+   * (BEEPER) PB6 | 9 10| PA15 (SD_DET)                  GND | 9 10| 5V
+   *               -----                                      -----
+   *                EXP1                                       EXP1
+   *
+   * Needs custom cable:
+   *
+   *    Board   Adapter   Display
+   *           _________
+   *   EXP1-1 ----------- EXP1-10
+   *   EXP1-2 ----------- EXP1-9
+   *   SPI1-4 ----------- EXP1-6
+   *   EXP1-4 ----------- EXP1-5
+   *   SP11-3 ----------- EXP1-2
+   *   EXP1-6 ----------- EXP1-4
+   *   EXP1-7 ----------- EXP1-8
+   *   EXP1-8 ----------- EXP1-3
+   *   SPI1-1 ----------- EXP1-1
+   *  EXP1-10 ----------- EXP1-7
+   */
+
+  #define CLCD_SPI_BUS                         1  // SPI1 connector
+
+  #define BEEPER_PIN                        PB6
+
+  #define CLCD_MOD_RESET                    PA9
+  #define CLCD_SPI_CS                       PB8
+
+  #if SD_CONNECTION_IS(LCD) && BOTH(TOUCH_UI_FTDI_EVE, LCD_FYSETC_TFT81050)
+    #define SD_DETECT_PIN                   PA15
+    #define SD_SS_PIN                       PA10
+  #endif
+
+#elif HAS_WIRED_LCD
+
+  #define BEEPER_PIN                        PC3
+
+#endif

ini/stm32f1.ini

@@ -74,6 +74,17 @@ build_flags       = ${env:STM32F103RC_btt.build_flags}
 build_unflags     = ${common_stm32.build_unflags} -DUSBD_USE_CDC
 
 #
+# Panda Pi V2.9 - Standalone (STM32F103RC)
+# Headless, without direct Pi control, but potentially hosting OctoPrint, stepdaemon, etc.
+#
+[env:PANDA_PI_V29]
+extends                     = common_STM32F103RC_variant
+build_flags                 = ${common_STM32F103RC_variant.build_flags}
+                              -DTIMER_SERVO=TIM1
+board_build.offset          = 0x5000
+board_upload.offset_address = 0x08005000
+
+#
 # MKS Robin (STM32F103ZET6)
 # Uses HAL STM32 to support Marlin UI for TFT screen with optional touch panel
 #