Samuel Kayode

### Contribution description This PR adds a driver, A3G4250D, for the ST A3G4250D gyroscope and temperature sensor. The driver implements ST's standard C driver for the sensor. **Please note:** The...

WIP: add driver for the ST l6470 motor driver

5

### Contribution description The driver, l6470, provides support for the l6470 device, a micro-stepping motor driver with motion engine and SPI. The driver developed is designed to support standard SPI...