The pin names of the GTR + M5 in the firmware

GTR Pinout Diagram

GTR Pinout

M5 Pinout Diagram

M5 Pinout

GTR + M5 Driver Pins in Firmware

Driver pin numbers. They are separated into driver number.

Pin Type 0 1 2 3 4 5 6 7 8 9 10
Enable Pins PF_1 PE_4 PB_9 PG_13 PD_7 PD_2 PF_8 PG_2 PF_14 PE_8 PI_0
Step Pins PC_15 PE_3 PB_8 PG_12 PD_6 PD_1 PF_3 PD_14 PE_12 PG_0 PH_12
Direction Pins PF_0 PE_2 PB_7 PG_11 PD_5 PD_0 PG_3 PD_11 PE_10 PG_1 PH_15
UART Pins PC_14 PE_1 PB_5 PG_10 PD_4 PC_12 PG_4 PE_15 PE_7 PF_15 PH_14

GTR + M5 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_1 e1heat heat1 Timer 2
PA_15 BTNENC   Timer 2
PA_2 bed hbed Timer 2
PA_3 e3temp Temp_M1 Timer 2
PA_8 LCD_RS    
PB_0 e2heat heat2 Timer 3
PB_1 e0heat heat0 Timer 3
PB_10 LCD_CD   Timer 2
PB_11 servo0   Timer 2
PB_12 LCD_SS    
PB_13 LCD_SCK    
PB_14 LCD_MISO   Timer 12
PB_15 LCD_MOSI   Timer 8
PB_3 SCK   Timer 2
PB_5 Z-CS   Timer 3
PB_6 MISO   Timer 4
PC_0 bedtemp t3  
PC_1 e0temp t0  
PC_10 LCD_EN    
PC_11 BEEP    
PC_12 E2-CS    
PC_13 ystop y-stop  
PC_14 X-CS    
PC_2 e1temp t1  
PC_3 e2temp t2  
PC_5 wifi5    
PC_6 wifi4   Timer 8
PC_7 wifi3   Timer 3
PC_8 fan2   Timer 8
PC_9 fan_M4   Timer 8
PD_10 BTN_EN1    
PD_12 e5heat heat_M3 Timer 4
PD_13 e4heat heat_M2 Timer 4
PD_15 e3heat heat_M1 Timer 4
PD_3 e2stop e2det  
PD_4 E1-CS    
PE_0 zstop z-stop  
PE_1 Y-CS    
PE_11 fan_M3    
PE_13 e6heat heat_M4  
PE_14 fan_M5    
PE_5 fan0   Timer 9
PE_6 fan1   Timer 9
PE_9 fan_M2    
PF_10 e5temp Temp_M3  
PF_11 wifi1    
PF_12 e7stop M5_Stop  
PF_13 Neopixel    
PF_2 xstop x-stop  
PF_4 e4stop M2_Stop  
PF_5 e7temp Temp_M5  
PF_6 e5stop M3_Stop Timer 10
PF_7 e6temp Temp_M4 Timer 11
PF_9 e4temp Temp_M2 Timer 14
PG_10 E0-CS    
PG_14 e0stop e0det  
PG_15 MOSI    
PG_5 LCD_D7    
PG_6 LCD_D6    
PG_7 LCD_D5    
PG_8 LCD_D4    
PG_9 e1stop e1det  
PH_10 BTN_EN2    
PH_11 probe    
PH_2 KCS    
PH_6 EI2   Timer 12
PI_1 KSCK    
PI_11 EI1    
PI_2 KMOSI    
PI_4 e3stop M1_Stop  
PI_5 fan_M1   Timer 8
PI_6 e7heat heat_M5 Timer 8
PI_7 e6stop M4_Stop  

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
0 PA_5 PA_6 PA_7 Hardware
1 PB_13 PB_14 PB_15 Hardware
2 NoPin NoPin NoPin Hardware
3 NoPin NoPin NoPin Software
4 NoPin NoPin NoPin Software
5 NoPin NoPin NoPin Software