Renamed the drv8424 stepper driver to indicate its support of the drv8424,
drv8425, drv8426, drv8434 and drv8436 stepper controllors. Also made the
microstep pins optional. All test files are renamed as well.
Signed-off-by: Jan Behrens <jan.behrens@navimatix.de>
refactoring enable function into enable and disable increasing readability
and increasing coherence with other stepper apis in terms of
nomenclature
Signed-off-by: Jilay Pandya <jilay.pandya@outlook.com>
unify error codes from all drivers based on stepper specification
add a generic test case for set_micro_step_interval and stop
Signed-off-by: Jilay Pandya <jilay.pandya@outlook.com>
Change the stepper API to instead of changing the stepper speed based on
the velocity in microsteps per second to use the delay in usec between
successive steps. Also remove the velocity from the `stepper_run` function
as typical API usage is enable -> set step interval -> run.
Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
