vnh5019 output voltage Issue

[ironman]

I experimented today.
When set #define DIV_CLOCK 4 works correctly.
Setting #define DIV_CLOCK 2 or #define DIV_CLOCK 1 does not work correctly.

Thanks for checking this out. This would have been my first try last weekend, but I did not have an isolated arduino at my disposal. With your positive test outcome it's opportune to take my pypilot back home to the workbench to do the upgrade.

@Sean why was DIV_CLOCK changed, and what would be the impact of changing it back? Would you accept a pull request for a change that forces DIV_CLOCK to 4 when pwm_style == 2? So it won't affect the other styles and preserves your work?