stm32f334-disco/buckboost: use a PID controller from libdsp * libdsp: initial commit * libdsp: cosmetics * stm32f334-disco/buckboost: use a PID controller from libdsp Approved-by: Gregory Nutt <gnutt@nuttx.org>
stm32/Kconfig: add some comments to HRTIM configuration, add ADC injected channels configuration; stm32f33xxx_hrtim.h: add some comments; stm32f334-disco: add buck/boost converter example configuration Approved-by: Gregory Nutt <gnutt@nuttx.org>