I got bored last night and started to look at the port assignments of the various 2560 board iterations (RAMPS, RUMBA, RAMBO, MEGATRONICS). Some boards group specific functional pins together on a single port, while others have seemingly random pin assignments.
For instance, the RAMBO has all the enable pins on one port, the step pins on another and the direction pins on yet another.
Another board groups enable, step and direction pins for a single driver to a port.
From a performance perspective which is best?
For instance, the RAMBO has all the enable pins on one port, the step pins on another and the direction pins on yet another.
Another board groups enable, step and direction pins for a single driver to a port.
From a performance perspective which is best?