0c428a66d9
Also simplify logic on all ARM-based interrupts. Now, it is REQUIRED to properly configure interrupt priority. USART should have highest priority, followed by Stepper, and then all others.
This HAL is for the STM32F407 MCU used with STM32Generic Arduino core by danieleff.
Arduino core is located at:
https://github.com/danieleff/STM32GENERIC
Unzip it into [Arduino]/hardware folder
This HAL is in development.
This HAL is a modified version of Chris Barr's Picoprint STM32F4 HAL.