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Pigweed overview
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Overview
First-time setup
Install Bazel
Bazel quickstart
Bazel integration
CMake integration
Static and runtime analysis
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Tour expand_more

Overview
0. Expectations and prerequisites
1. Setup
2. Explore build targets
3. Build an app
4. Explore C++ code intelligence
5. Run host tests
6. Static and runtime analysis
7. Run the host app
8. Flash your Pico
9. Run on-device tests
10. Communicate with your Pico over RPC
11. Automate common workflows
12. Communicate with your Pico over the Web Serial API
13. Run factory workflows at your desk
14. Use Bazel’s cloud features
15. Run the air quality monitor app
16. Handle crashes and view snapshots
17. Wrapping up
Source code

Modules expand_more

Contributing expand_more

Contributing guide
Build systems reference
Code reviews (Gerrit)
Code review guidelines
Issue tracker
Report a vulnerability
SEEDs
Infra
Embedded C++ Guide
Style guides
Code of conduct
Docs contributors
Testing Guide

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Overview
Quickstart
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Modules
- Overview
- Module Structure
- Facades & backends
- pw_alignment
- pw_allocator
- pw_analog
- pw_android_toolchain
  - Source code
  - Issues
- pw_arduino_build
  - Source code
  - Issues
- pw_assert
  - Backends
    
    Basic
    
    Source code
    
    Issues
    
    Pigweed logging
    
    Source code
    
    Issues
    
    Fuchsia
    
    Source code
    
    Issues
    
    Tokenized
    
    Source code
    
    Issues
    
    Trap
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - Rust API reference
  - Source code
  - Issues
- pw_async
  - Backends
    
    Basic
    
    C/C++ API reference
    
    Source code
    
    Issues
    
    Fuchsia
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_async2
- pw_atomic
  - Source code
  - Issues
- pw_base64
- pw_bloat
- pw_blob_store
  - Source code
  - Issues
- pw_bluetooth
- pw_bluetooth_hci
  - Source code
  - Issues
- pw_bluetooth_proxy
- pw_bluetooth_profiles
  - Source code
  - Issues
- pw_bluetooth_sapphire
- pw_boot
- pw_buf
- pw_build
- pw_build_android
  - Source code
  - Issues
- pw_build_info
  - Source code
  - Issues
- pw_build_mcuxpresso
  - Source code
  - Issues
- pw_bytes
- pw_channel
- pw_change
  - Source code
  - Issues
- pw_checksum
  - Source code
  - Issues
- pw_chre
- pw_chrono
  - Backends
    
    embOS
    
    Source code
    
    Issues
    
    FreeRTOS
    
    Source code
    
    Issues
    
    RP2040
    
    Source code
    
    Issues
    
    STL
    
    Source code
    
    Issues
    
    ThreadX
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_cli
- pw_cli_analytics
  - Source code
  - Issues
- pw_clock_tree
- pw_compilation_testing
  - Source code
  - Issues
- pw_config_loader
- pw_console
- pw_containers
- pw_cpu_exception
  - Backends
    
    Cortex-M
    
    Source code
    
    Issues
    
    RISCV
    
    Source code
    
    Issues
  - Source code
  - Issues
- pw_crypto
- pw_digital_io
  - Backends
    
    Linux
    
    Source code
    
    Issues
    
    MCUXpresso
    
    C/C++ API reference
    
    Source code
    
    Issues
    
    RP2040
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_display
- pw_dma_mcuxpresso
  - Source code
  - Issues
- pw_docgen
  - Source code
  - Issues
- pw_doctor
  - Source code
  - Issues
- pw_elf
- pw_emu
- pw_enum
- pw_env_setup
- pw_env_setup_zephyr
  - Source code
  - Issues
- pw_file
  - Source code
  - Issues
- pw_flatbuffers
  - Source code
  - Issues
- pw_format
- pw_fortifier
- pw_function
- pw_fuzzer
- pw_ghish
  - Life of a PR
  - Project setup
  - Agent setup
  - Agent workflows
  - Subcommands
    
    gh pr
    
    gh run
    
    gh issue
    
    gh auth
    
    gh hook
    
    gh wt
    
    gh sense
  - Developing
    
    Compat policy
    
    Agent evaluation
    
    Status & roadmap
  - Source code
  - Issues
- pw_grpc
  - Source code
  - Issues
- pw_hal
  - Source code
  - Issues
- pw_hdlc
- pw_hex_dump
- pw_hil
  - Source code
  - Issues
- pw_i2c
- pw_ide
- pw_interrupt
  - Backends
    
    Cortex-M
    
    Source code
    
    Issues
    
    FreeRTOS
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
    
    Fake (test-only)
  - C/C++ API reference
  - Source code
  - Issues
- pw_intrusive_ptr
  - Source code
  - Issues
- pw_json
- pw_kernel
  - Quickstart
  - Tour
  - Design
  - Guides
  - Upstream
  - Source code
  - Issues
- pw_kvs
- pw_libc
  - Source code
  - Issues
- pw_libcxx
  - Source code
  - Issues
- pw_log
  - The pw_log protobuf
  - Tokenized log arguments
  - API reference
  - Backends
    
    Android
    
    Source code
    
    Issues
    
    Basic
    
    Source code
    
    Issues
    
    Fuchsia
    
    Source code
    
    Issues
    
    Null
    
    Source code
    
    Issues
    
    RPC
    
    String
    
    C/C++ API reference
    
    Source code
    
    Issues
    
    Tokenized
    
    C/C++ API reference
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - Rust API reference
  - C/C++ API reference
  - Source code
  - Issues
- pw_malloc
  - Backends
    
    Freelist
    
    Source code
    
    Issues
    
    FreeRTOS
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_memory
  - Source code
  - Issues
- pw_metric
  - Source code
  - Issues
- pw_module
  - Source code
  - Issues
- pw_multibuf
- pw_multisink
  - Source code
  - Issues
- pw_numeric
- pw_package
  - Source code
  - Issues
- pw_perf_test
- pw_persistent_ram
- pw_polyfill
- pw_preprocessor
- pw_presubmit
- pw_protobuf
- pw_protobuf_compiler
  - Source code
  - Issues
- pw_random
  - Backends
    
    Fuchsia
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_result
- pw_ring_buffer
  - Source code
  - Issues
- pw_router
  - Source code
  - Issues
- pw_rpc
- pw_rpc2
- pw_rpc_transport
  - Source code
  - Issues
- pw_rust
  - Source code
  - Issues
- pw_sensor
- pw_snapshot
- pw_software_update
- pw_span
- pw_spi
  - Backends
    
    Linux
    
    Source code
    
    Issues
    
    MCUXpresso
    
    Source code
    
    Issues
    
    RP2040
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_status
- pw_stm32cube_build
  - Source code
  - Issues
- pw_stream
- pw_string
- pw_symbolizer
  - Source code
  - Issues
- pw_sync
  - Backends
    
    Bare Metal
    
    Source code
    
    Issues
    
    embOS
    
    Source code
    
    Issues
    
    FreeRTOS
    
    Source code
    
    Issues
    
    STL
    
    Source code
    
    Issues
    
    ThreadX
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_sys_io
  - Backends
    
    Ambiq Suite SDK
    
    Source code
    
    Issues
    
    Arduino
    
    Source code
    
    Issues
    
    LM3S6965EVB
    
    Source code
    
    Issues
    
    STM32F429
    
    Source code
    
    Issues
    
    Emcraft SF2
    
    Source code
    
    Issues
    
    MCUXpresso
    
    Source code
    
    Issues
    
    RP2040
    
    Source code
    
    Issues
    
    Standard I/O
    
    Source code
    
    Issues
    
    STM32Cube
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - C/C++ API reference
  - Source code
  - Issues
- pw_system
- pw_target_runner
  - Go
  - Source code
  - Issues
- pw_thread
  - Backends
    
    embOS
    
    Source code
    
    Issues
    
    FreeRTOS
    
    Source code
    
    Issues
    
    STL
    
    Source code
    
    Issues
    
    ThreadX
    
    Source code
    
    Issues
    
    Zephyr
    
    Source code
    
    Issues
  - Rust API reference
  - C/C++ API reference
  - Source code
  - Issues
- pw_time
- pw_tls_client
  - Backends
    
    BoringSSL
    
    Source code
    
    Issues
    
    MbedTLS
    
    Source code
    
    Issues
  - Source code
  - Issues
- pw_tokenizer
- pw_toolchain
- pw_trace
- pw_transfer
- pw_transport
- pw_uart
- pw_unit_test
- Zephyr backend tests
- pw_uuid
- pw_varint
- pw_watch
- pw_web
- pw_work_queue
Contributing
Build systems & toolchain
Targets
OS abstraction layers
- OS abstraction layers
- Zephyr
  - Setup
  - Advantages & differences
  - Zephyr backend modules
    
    Allocator
    
    Assert
    
    Chrono
    
    Env setup
    
    Interrupt
    
    Log
    
    Sync
    
    SPI
    
    Sys IO
    
    Thread
- FreeRTOS
- ThreadX
- embOS
- STL (Linux, MacOS, Windows, Fuchsia)
  - STL backend modules
    
    Chrono
    
    Sync
    
    Thread
- Bare metal
  - Bare metal backend modules
    
    Sync
Third-party modules
- Abseil C++
- BoringSSL
- crates.io dependencies
- Docker
- Emboss
- Fuchsia libraries
- FuzzTest
- GoogleTest
- LLVM compiler-rt
- LLVM libc
- LLVM libcxx
- Nanopb
- Perfetto
- TinyUSB
Community & news
Security
Reference

Reference#

C/C++ API reference

Pigweed’s C/C++ API reference.

./cc/modules.html

Rust API reference

Pigweed’s Rust reference.

../rustdoc/index.html

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Security bulletin 2026-08

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