Other Considered Operation Systems

FreeRTOS

No official Rust support, neither FreeRTOS-rust or freertos.rs looked like they are in active development.

Apache Mynewt

While there is a Rust tutorial there doesn't seem too much information on official bindings and using Rust otherwise.

Other + Rumble

We also looked at using (Rust) RTOS without their own BLE stacks in combination with Rumble but that project also does not look like it is in active development.