Can anyone tell me if he ENABLE pin from Add-on1 is GPIO pin? If not, if there is anyother Pin which can be used from other Add-ons?

The chip is a GD32F305VGT6, pull up the datasheet and you can find out [image] All of the named ports are GPIOs. There may be an alternate function mapped by default, would have to read through the user manual to verify the pin is configured correctly. https://www.gigadevice.com/microcontroller/g…

I think generally it’s a safe assumption that all pins for the plugs are GPIO pins. Why do you ask? Most of the pins are defined in: Snapmaker2-Controller/pins_GD32F1.h at b73076557491cdd7e014a8771caa621c6c009f10 · Snapmaker/Snapmaker2-Controller · GitHub

I am trying to use one of the pins, here for example PE13 (Add-on1 STEP PIN) to control a valve like a seecond extruder: Stepper.cpp #elif HAS_E0_STEP // Trigger to start Valve printing. if(current_block->extruder == 1){ if(step_needed[E_AXIS]){ pinMode(PE13, OUTPUT); …

// 8 PIN port from top to bottom #define PORT_TO_STEP_PIN { /STEP DIR ENABLE/ \ /* PORT_8PIN_1 */ {PE14, PB10, PB11}, \ /* PORT_8PIN_2 */ {PE13, PC10, PC11}, \ /* PORT_8PIN_3 */ {PC6 , PD15, PA3 }, \ /* PORT_8PIN_4 */ {PB4 , PB3, PB5 }, \ /* PORT_8PIN_5 */ …

[image] zk1005: extDigitalWrite(PE13, HIGH) These external digital writing of high and low are only possible on GPIO pins, therefore I was wondering which pins are GPIO pins

With the tools I have in front of me at the moment (only notepad++) I cannot adequately trace these functions throughout the code. Need vscode. Will have to look later. If the pin is not being referenced elsewhere in the ISR to be controlled then I can’t say.

Wow. Thank you. Well only the E1_DIR_pin is used in rotary module: [image] and PE13 has only these references :slight_smile: [image]

Unfortuantely it’s not that simple, because then you will have to trace all references of E1_STEP_PIN and so on recursively. Ultimately it traces back to AXIS_INIT and other very general macros that are included with various conditional includes. [image]

While using RUmba32, I used the similar method, to use a GPIO pin to run the valve as extruder 2, and thats what I am trying to replicate here. I need the valve to open and close like an extruder. therefore I am trying to tap the GPIO pin on the module.

Yea in theory I think it’ll work, just going to take some time to find out.

GPIO pins on controller

Snapmaker 2.0 (3-in-1)

nivekmai October 25, 2021, 1:04pm 2

All the addons are actually controller using a CAN bus. Maybe check this out: Custom Extension Module

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GPIO pins on controller

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