Zephyr

Modules, backends, and helpers for the Zephyr RTOS

Pigweed’s Zephyr integration provides a suite of abstractions and helpers designed to make developing C++ applications on Zephyr safer, more robust, and fully compatible with Pigweed’s portable facades.

• Compile-time lock safety: Support for Clang’s static thread-safety analysis annotations, enabling compile-time detection of data races and incorrect lock ordering.

• Safe non-recursive mutexes: Enforces strict non-recursive mutex semantics and assertions to detect bugs and prevent deadlocks.

• Safe callback execution: Routes timer callbacks to delayable work queues running in thread context, enabling race-free synchronous timer deletion.

• Tokenized logs and asserts: Drastically reduces binary size by tokenizing all assertion and logging statements in both the application and the Zephyr kernel.

Advantages & differences

Learn how Pigweed’s wrappers improve safety, catch bugs at compile-time or runtime, and compare directly with raw Zephyr APIs.

Advantages & differences

Setup

Get started using Pigweed with Zephyr, build the starter project, and run tests.

Setup

Modules

The following table lists all modules related to Zephyr.

Name	Status	Description	Languages
pw_allocator_zephyr	stable
pw_assert_zephyr	stable
pw_chrono_zephyr	stable
pw_digital_io_zephyr	experimental		C++
pw_env_setup_zephyr	experimental	Zephyr utilities
pw_i2c_zephyr	experimental	Zephyr implementation for pw_i2c
pw_interrupt_zephyr	unstable
pw_log_zephyr	stable
pw_spi_zephyr	stable
pw_sync_zephyr	stable
pw_sys_io_zephyr	stable
pw_thread_zephyr	stable