Where are STP and DIR pins written to in 2.0 marlin firmware?
Posted by Enerology
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Where are STP and DIR pins written to in 2.0 marlin firmware? October 06, 2020 08:15PM |
Registered: 3 years ago Posts: 3 |
I am adding a high-frequency GPIO expander for my esp32 to control 8 extruders and need to know where the DIR and STP pins are written to in the firmware so I can intercept the data and inject custom code to write to the GPIO expander instead. This is for a custom multi-jet 3d printer.
Edited 1 time(s). Last edit at 10/06/2020 08:16PM by Enerology.
Edited 1 time(s). Last edit at 10/06/2020 08:16PM by Enerology.
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Re: Where are STP and DIR pins written to in 2.0 marlin firmware? October 07, 2020 05:28AM |
Admin Registered: 13 years ago Posts: 7,000 |
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Re: Where are STP and DIR pins written to in 2.0 marlin firmware? October 07, 2020 06:24AM |
Admin Registered: 11 years ago Posts: 3,096 |
Quote
Enerology
I am adding a high-frequency GPIO expander for my esp32 to control 8 extruders and need to know where the DIR and STP pins are written to in the firmware so I can intercept the data and inject custom code to write to the GPIO expander instead. This is for a custom multi-jet 3d printer.
Sounds like a super cool project by the way. Is there any documentation of the project available anywhere?
http://www.marinusdebeer.nl/
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Re: Where are STP and DIR pins written to in 2.0 marlin firmware? October 07, 2020 12:27PM |
Registered: 3 years ago Posts: 3 |
Not yet, I am almost done with everything on the machine and the folks on the Discord 3D printing forums convinced me to do a complete showcase of the printer and post it to Youtube. The thing is a monster, it has 4 Steppers for the X, 4 for Y & 4 for Z and 8 for extruders. I have +60 stepper motors so I just wanted to do a insane build with some of them.
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Re: Where are STP and DIR pins written to in 2.0 marlin firmware? October 07, 2020 12:27PM |
Registered: 3 years ago Posts: 3 |
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Re: Where are STP and DIR pins written to in 2.0 marlin firmware? October 07, 2020 06:52PM |
Registered: 6 years ago Posts: 1,863 |
Quote
Enerology
Not yet, I am almost done with everything on the machine and the folks on the Discord 3D printing forums convinced me to do a complete showcase of the printer and post it to Youtube. The thing is a monster, it has 4 Steppers for the X, 4 for Y & 4 for Z and 8 for extruders. I have +60 stepper motors so I just wanted to do a insane build with some of them.
Wow!!!!
I know it is not done though could you post a single full size photo.
Computer Programmer / Electronics Technician
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