Bare-metal Programming On The Teensy 3. 40 Comments . by: Brian Benchoff. April 14, ... Given how awfully integrated the Teensy is with the Arduino environment, bare metal is the best thing for it ...

Definitely, one could use any of the existing frameworks to program an STM32 MCU, whether the ST HAL framework, plain CMSIS, or even something more Arduino-flavored.

If further development is likely, starting out with a scalable program structure is a worthwhile investment, Walls said. There seems to be growing interest in this approach. While programming on bare ...