makerbase-mks
[TMC 2209] Wrong microstep resolution configurations in schematics
(I believe that I've checked every reasonable resource where this might have already been documented, I'm sorry if this is a well known discrepancy and that I simply missed it so far.)
The TMC 2209 MKS driver schematics file in this repository shows the following:
+-----+-----+-------+
| MS1 | MS2 | Steps |
+-----+-----+-------+
| GND | GND | 8 |
| VIO | GND | 2 |
| GND | VIO | 4 |
| VIO | VIO | 16 |
+-----+-----+-------+
This agrees with the spec sheet for the TMC 2209 driver spec sheet that can also be found in this repository.
However, that spec sheet is outdated. The latest revision (v1.09) shows a different table (section 3.4):
+-----+-----+-------+
| MS1 | MS2 | Steps |
+-----+-----+-------+
| GND | GND | 8 |
| VIO | GND | 32 |
| GND | VIO | 64 |
| VIO | VIO | 16 |
+-----+-----+-------+
In fact, the revision history (section 25) mentions the following: "V1.01 2019-Apr-26 BD Corrected table of microstep pin settings".
I therefore believe that the schematics files that can be found in this repository are incorrect.
TL;DR: 1/32 and 1/64 microstep resolution (before interpolation) is possible with the MKS TMC 2209 driver and is not limited to 1/16 as currently described in the schematics file in this repository.
