The pin names of the SKR3 H723 Version in the firmware

SKR3 H723 Version Pinout Diagram

SKR3 Pinout

SKR3 H723 Version Driver Pins in Firmware

Driver pin numbers. They are separated into driver number.

Pin Type 0 1 2 3 4
Enable Pins PD_6 PD_1 PE_0 PC_7 PD_13
Step Pins PD_4 PA_15 PE_2 PD_15 PD_11
Direction Pins PD_3 PA_8 PE_3 PD_14 PD_10
UART Pins PD_5 PD_0 PE_1 PC_6 PD_12

SKR3 H723 Version Other Pins in Firmware

If more than one pin name is availble, either name can be used in the firmware (config.g).
If the pins aren’t in the table (due to not having a special name), then the pin itself can be used in the form of PA0, PA.0, PA_0, A0, A.0 or A_0.

Pin Number Pin Name 1 Pin Name 2 PWM Hardware Timer
PA_0 e1stop e1det Timer 2
PA_1 bedtemp tb Timer 15
PA_13 LED    
PA_2 e0temp th0 Timer 15
PA_3 e1temp th1 Timer 2
PA_4 LCD_SS    
PA_5 LCD_SCK   Timer 8
PA_6 LCD_MISO   Timer 13
PA_7 LCD_MOSI   Timer 14
PB_0 BTN_ENC   Timer 3
PB_1 LCD_EN   Timer 3
PB_2 BTN_EN2    
PB_3 e0heat heat0 Timer 2
PB_4 e1heat heat1 Timer 3
PB_5 fan2   Timer 3
PB_6 fan1   Timer 16
PB_7 fan0 fan Timer 17
PC_0 zstop z-stop  
PC_1 xstop x-stop  
PC_13 probe    
PC_15 PWRDET    
PC_2 e0stop e0det  
PC_3 ystop y-stop  
PC_4 LCD_CD    
PC_5 BEEP    
PD_7 bed hbed  
PE_10 LCD_D5    
PE_11 LCD_D6    
PE_12 LCD_D7    
PE_4 PSON   Timer 15
PE_5 servo0   Timer 15
PE_6 Neopixel   Timer 15
PE_7 BTN_EN1    
PE_8 LCD_RS    
PE_9 LCD_D4    

Configured SPI connections

The below SPI channels are preconfigured in the firmware.
Where NoPin is present, then that pin is not configured by default.

SPI Channel CLK MISO MOSI Hardware or Software Use
0 PA_5 PA_6 PA_7 Hardware EXP2
1 PB_13 PB_14 PB_15 Hardware WiFi
2 NoPin NoPin NoPin Hardware  
3 PE_14 PE_15 PE_13 Software Drivers
4 PC_5 PB_1 PB_0 Software Accelerometer
5 PE_9 NoPin PB_1 Software Reprapdiscount Display
6 NoPin NoPin NoPin Hardware  
7 NoPin NoPin NoPin Hardware  
8 NoPin NoPin NoPin Hardware