Support for the STM32L1xx series?

[brentr]

Hi, Considering switching to Rust for microcontrollers in this project:

http://mbari.org/esp

What would be involved in adding support for the STM32L1xx series of microcontrollers? (The STM32L152 in particular)

Would this just involve creating the required peripheral bindings, or do the STML1xxx chips lack some features critical for Drone core?

Here's an detailed comparison of the L1 and L4 chips: http://web.eece.maine.edu/~zhu/book/STM32L4/STM32L1%20vs%20STM32L4.pdf