6 releases

0.1.4 Nov 16, 2022
0.1.3 Aug 16, 2022
0.1.2 Mar 30, 2022
0.0.1 Jan 23, 2022

#1146 in Embedded development

Download history 27/week @ 2023-08-09 40/week @ 2023-08-16 20/week @ 2023-08-23 12/week @ 2023-08-30 84/week @ 2023-09-06 28/week @ 2023-09-13 16/week @ 2023-09-20 33/week @ 2023-09-27 23/week @ 2023-10-04 45/week @ 2023-10-11 27/week @ 2023-10-18 36/week @ 2023-10-25 29/week @ 2023-11-01 30/week @ 2023-11-08 36/week @ 2023-11-15 50/week @ 2023-11-22

151 downloads per month
Used in 7 crates (6 directly)

MIT/Apache

800KB
14K SLoC

r3_kernel

The original kernel of R3-OS.

  • Traditional uniprocessor tickless real-time kernel with preemptive scheduling

  • Implements a software-based scheduler supporting a customizable number of task priorities (up to 2¹⁵ levels on a 32-bit target, though the implementation is heavily optimized for a smaller number of priorities) and an unlimited number of tasks.

  • Provides a scalable kernel timing mechanism with a logarithmic time complexity. This implementation is robust against a large interrupt processing delay.

  • The kernel is split into a target-independent portion and a target-specific portion. The target-specific portion (called a port) is provided as a separate crate (e.g., r3_port_riscv). An application combines them using the trait system.

Dependencies

~2–4MB
~78K SLoC