samples: added foc controller sample for the simple foc shield

[uLipe]

Signed-off-by: Felipe Neves felipe.neves@linaro.org

[uLipe]

@microbuilder PTAL

Since shields are different I created two variants and set the pinmux according to the used shield

[uLipe]

@microbuilder PTAL these fixes are important to make the FoC controller work in both shields.

Also I'm planning to make FoC controller common across shields, since this is expansible with future position plus velocity control.

[microbuilder]

@uLipe Can you add the U585 as a board option here? It will make it easier for everyone to test. Thanks.

[uLipe]

@microbuilder there is no pwm pin for one of the motor phases, which means extra wiring to the u585 board, the same problem of the stm32 BLDC shield

[microbuilder]

@microbuilder there is no pwm pin for one of the motor phases, which means extra wiring to the u585 board, the same problem of the stm32 BLDC shield

Is the lpcxpresso55s69 the same?

[uLipe]

Added DNM here until new publish API gets merged

[uLipe]

There is a plan to refactor all the samples and move the prebuilt nodes to a separate folder, so I'm closing this since it will affect all the samples including this one