What are some common challenges faced when developing firmware for embedded microcontrollers using Rust?

One common challenge is ensuring compatibility between Rust and the specific microcontroller hardware, as not all device drivers and libraries may be readily available in Rust compared to more established languages like C. Developers often need to interface directly with hardware registers, which requires careful attention to memory safety and performance. Additionally, debugging can be more involved due to limited debugging tools for embedded Rust, so familiarity with hardware debuggers and Rust's embedded ecosystem is essential. Collaboration with hardware engineers and other software developers is also frequent, as firmware development often overlaps with hardware testing and integration.