Marlin
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MarlinFirmware
Preliminary CR4NS200320C13 board (Ender-3 V3) support
Preliminary CR4NS200320C13 board support, as found in the Ender-3 V3 SE
Driver configuration and display pin-out must be verified, this board uses the GD32F303 RET6 SoC, it could be compatible with the STM32F103 as in other boards with the same SoC.
/**
* LCD PIN OUT
* ------
* NC | 1 2 | NC
* RX | 3 4 | TX
* EN 5 6 | BEEP
* B | 7 8 | A
* GND | 9 10 | +5V
* ------
*/
#define EXP3_01_PIN -1
#define EXP3_02_PIN -1
#define EXP3_03_PIN PA2
#define EXP3_04_PIN PA3
#define EXP3_05_PIN PB1
#define EXP3_06_PIN // To be verified
#define EXP3_07_PIN PA12
#define EXP3_08_PIN PA11
#ifndef BEEPER_PIN
#define BEEPER_PIN EXP1_06_PIN // BEEP
#endif
#define BTN_ENC EXP1_05_PIN // EN
#define BTN_EN1 EXP1_08_PIN // A
#define BTN_EN2 EXP1_07_PIN // B
Seems that MS35774 driver is a clone of the TMC2208, TMC_UART configuration was found only for X, Y and Z drivers, so maybe E0 is working in TMC2208_STANDALONE mode.
Based on the disclosed board configuration, images and Creality's printer.cfg
Image from Ebay store
could be compatible with the STM32F103 as in other boards with the same SoC
It may be, although this is labeled as GD32F303... so if it follows the same numbering as STM32 the MCU is a Cortex-M4 instead of a Cortex-M3, so it may have a few more built-in ports and capabilites. In any case, it's very fast! 168 megahertz is fast enough to outrun even the bigger imperial cruisers.
It is a Cortex-M4 at 120MHz https://www.gigadevice.com/product/mcu/arm-cortex-m4/gd32f303ret6
Aha! Probably can still outrun most tie fighters.
Maybe even Tie interceptors and close to the USS Defiant.