Hey all! I am trying to add an external stepper motor to my SKR E3 Turbo (external driver, too), and for that I need 4 digital pins such as the AUX-2's sda2, scl2, sda0, and scl0. However, I can't seem to figure out how to declare them in the firmware without getting a compilation error "was not declared in this scope". Can anyone help me out?
#AUX-2 Pins on SKR E3 Turbo
tiny fossil
tiny fossil
that was my initial thought, but thats what the pinout says
tiny fossil
and on their github, only sda1 and scl1 show up
sweet path
look at schematic and datasheet
calm temple
that was my initial thought, but thats what the pinout says
Yep, just have to look them up. We'd love to add such names to our header pile, but no one has taken that initiative.
tiny fossil
and on their github, only sda1 and scl1 show up
thanks guys, this is all that shows up from the datasheet, though
would that mean that those pins are unusable separately
tiny fossil
oh
sweet path
and Z2 etc if it's not 4th+ axis
tiny fossil
i found this on the datasheet, does that mean i'd put P0_27 instead of SDA0?
sweet path
yep
tiny fossil
alright, thanks!
tiny fossil
just a follow up question - I put these lines of code in the setup function of MarlinCore.cpp (to test that the motor receives the signals on power on - I previously tested it synchronous with G28 but it didnt work) and its not working. I know the code works as I tested it on an Arduino circuit, but I can't figure out what's going wrong on the printer
tiny fossil
i have those pin declarations for this function (in motion.cpp)
for reference^
sweet path
wtf is CS for?
overall code is very wrong for marlin
https://marlinfw.org/docs/development/coding_standards.html
you have to use WRITE and safe_delay