Note

This documentation is not for the latest stable release version. The latest stable version is v5.5.1

System API

[中文]

• App Image Format
• Bootloader Image Format
• Application Level Tracing
• Call Function with External Stack
• Chip Revision
• Console
• eFuse Manager
• Error Code and Helper Functions
• ESP HTTPS OTA
• Event Loop Library
• FreeRTOS Overview
• FreeRTOS (IDF)
• FreeRTOS (Supplemental Features)
• Heap Memory Allocation
• Memory Management for MMU Supported Memory
• Memory Synchronization
• Heap Memory Debugging
• ESP Timer (High Resolution Timer)
• Internal and Unstable APIs
• Inter-Processor Call (IPC)
• Interrupt Allocation
• Logging library
• Miscellaneous System APIs
• Over The Air Updates (OTA)
• Performance Monitor
• Power Management
• POSIX Support (Including POSIX Threads Support)
• Random Number Generation
• Sleep Modes
• SoC Capabilities
• System Time
• Asynchronous Memory Copy
• ULP Coprocessor Programming
• ULP RISC-V Coprocessor Programming
• Watchdogs

Code examples for this API section are provided in the system directory of ESP-IDF examples.

---

Was this page helpful?

• Thank you! We received your feedback.
• If you have any comments, fill in Espressif Documentation Feedback Form.

• We value your feedback.
• Let us know how we can improve this page by filling in Espressif Documentation Feedback Form.