It turns out that there is already a secondary microcontroller hidden in plain sight, integrated into the A64 itself. could have addressed this problem by putting a secondary microcontroller on the board, but he found an even more elegant solution instead.
Allwinner a64 processor drivers#
“But Linux is not a real-time operating system”, we hear you cry, “and controlling stepper motor drivers from an A64 SoC is just asking for trouble”. The Recore board is powered by an AllWinner A64 system on chip (SoC) which packs four ARM Cortex-A53 AArch64 cores running Debian Linux. The applications include Klipper, a project we wrote about when it was first introduced, and the OctoPrint print server. ’s design merges these together into one compact 12 x 12 x 4 cm package. Many setups also have a second computer, often Linux-based, which is dedicated to supporting tasks like running an Octoprint server and interfacing to a digital camera to monitor print progress remotely. The typical 3D printer has a dedicated controller which handles the real-time aspects of driving stepper motors. So make sure to read the datasheet for the exact right CPU.No stranger to the world of 3D printers, from the workshop has released a new controller board called Recore. For example the R8 hasġ9 pins in the group PB but the A64 only has 10. The availability of each gpio differs between CPUs. The R8 has the LCD-DE signal on gpio PD25 but the A64 has it on PD19. The supported functionality of each gpio differs between CPUs. These global variables can be used directly.
Allwinner a64 processor driver#
This driver implements memory-mapped GPIO pin manipulation and leverages Package allwinner exposes the GPIO functionality that is common to all
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