API Guides
**********
:link_to_translation:`zh_CN:[中文]`

.. toctree::
    :maxdepth: 1

    Application Level Tracing <app_trace>
    Application Startup Flow <startup>
    :SOC_BT_SUPPORTED: BluFi <blufi>
    Bootloader <bootloader>
    Build System <build-system>
    :esp32: Build System (Legacy GNU Make) <build-system-legacy>
    Deep Sleep Wake Stubs <deep-sleep-stub>
    :SOC_USB_SUPPORTED: Device Firmware Upgrade through USB <dfu>
    Error Handling <error-handling>
    :SOC_BT_SUPPORTED: ESP-BLE-MESH <esp-ble-mesh/ble-mesh-index>
    ESP-MESH (Wi-Fi) <mesh>
    Core Dump <core_dump>
    Event Handling <event-handling>
    :SOC_SPIRAM_SUPPORTED: External SPI-connected RAM <external-ram>
    Fatal Errors <fatal-errors>
    Flash Encryption <../security/flash-encryption>
    FreeRTOS SMP Changes <freertos-smp>
    Hardware Abstraction <hardware-abstraction>
    :CONFIG_IDF_TARGET_ARCH_XTENSA: High Level Interrupts <hlinterrupts>
    JTAG Debugging <jtag-debugging/index>
    Linker Script Generation <linker-script-generation>
    Memory Types <memory-types>
    lwIP TCP/IP Stack <lwip>
    Partition Tables <partition-tables>
    Performance <performance/index>
    RF Calibration <RF_calibration>
    :esp32: Secure Boot <../security/secure-boot-v1>
    Secure Boot V2 <../security/secure-boot-v2>
    Thread Local Storage <thread-local-storage>
    Tools <tools/index>
    :SOC_ULP_SUPPORTED: ULP Coprocessor <ulp>
    :esp32: ULP Coprocessor (Legacy GNU Make) <ulp-legacy>
    :SOC_RISCV_COPROC_SUPPORTED: ULP-RISC-V Coprocessor <ulp-risc-v>
    Unit Testing (Target) <unit-tests>
    Unit Testing (Linux Host) <linux-host-testing>
    :esp32: Unit Testing (Legacy GNU Make) <unit-tests-legacy>
    :SOC_USB_SUPPORTED: USB OTG Console <usb-otg-console>
    :SOC_USB_SERIAL_JTAG_SUPPORTED: USB Serial/JTAG Controller Console <usb-serial-jtag-console>
    WiFi Driver <wifi>