System API

• App image format
• Application Level Tracing
• eFuse Manager
• Error Codes and Helper Functions
• ESP HTTPS OTA
• ESP pthread
• Event Loop Library
• FreeRTOS
• FreeRTOS Additions
• Heap Memory Allocation
• Heap Memory Debugging
• High Resolution Timer
• Himem (large external SPI RAM) API
• Inter-Processor Call
• Call function with external stack
• Interrupt Allocation
• Logging
• Miscellaneous System APIs
• Over The Air Updates (OTA)
• Performance Monitor
• Power Management
• Sleep Modes
• Watchdogs
• System Time

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