espressif/esp_xiaozhi

Changelog

# Changelog

## v0.1.1

This release updates `esp_xiaozhi` for build compatibility with both **ESP-IDF 5.5** and **ESP-IDF 6.0+**, while keeping the existing WebSocket and MQTT+UDP Xiaozhi chat APIs compatible with v0.1.0.

### Changed

- **Component version**: Bumped the component manifest version to **`0.1.1`**.
- **ESP-IDF version range**: Relaxed the manifest requirement from `>=5.5,<6` to **`>=5.5`** so IDF 6.0+ can resolve the component.
- **MCP dependency**: Updated the required `espressif/mcp-c-sdk` version to **`^2.0.1`**, which provides IDF 5.5 / IDF 6 compatible JSON and Mbed TLS handling.
- **JSON dependency**: Switched `PRIV_REQUIRES` from built-in `json` to managed **`cjson`**, and added **`espressif/cjson`** to the component manifest for all supported IDF versions.
- **MQTT dependency**: Added **`espressif/mqtt`** to the component manifest so ESP-MQTT resolves on IDF 6, where it is no longer a built-in component (managed `mqtt` is also used on IDF 5.5).
- **UDP audio payload**: Added Kconfig `XIAOZHI_UDP_MAX_AUDIO_PAYLOAD_SIZE` (default 1400) and enforce the limit when sending MQTT+UDP audio to reduce IP fragmentation risk.
- **UDP send behavior**: Added UDP send socket timeout and backpressure delay when the send path is congested.
- **Test app build wiring**: Updated `components/esp_xiaozhi/test_apps` to use the correct IDF test component path for IDF 5.5 vs IDF 6.0+, and to include the local `mcp-c-sdk` component for repository-local validation.

### Fixed

- **String copies (GCC 15)**: Replaced `strncpy`-based copies in keystore, board JSON export, and related paths with bounded `memcpy` / `snprintf` to avoid `-Wstringop-truncation` warnings.
- **IDF 6 Mbed TLS compatibility**: Replaced direct usage of `mbedtls/aes.h`, which is no longer a public header in IDF 6 / Mbed TLS 4.x.
- **MQTT+UDP AES-CTR audio encryption**: Added an internal AES-CTR wrapper:
  - IDF `< 6.0`: keeps the existing `mbedtls_aes_*` implementation.
  - IDF `>= 6.0`: uses the public PSA cipher API for AES-CTR encryption/decryption.
- **Repeated AES key setup**: Ensured the IDF 6 PSA key is destroyed before importing a replacement key, avoiding leaked volatile PSA keys when server hello provides a new UDP key.

## v0.1.0

### Added

- Initial release of Xiaozhi AI Chatbot component
- Support for bidirectional streaming dialogue with xiaozhi.me service
- Real-time voice/text interaction with AI agents
- Support for WebSocket and MQTT+UDP communication protocols
- Audio codec support: OPUS, G.711, and PCM formats
- MCP integration for device control
- Multi-language support: Chinese and English
- Board management API
- Settings management API
- MQTT communication API

### Features

- **esp_xiaozhi_chat**: Main chat API for voice/text interaction
- **esp_xiaozhi_mqtt**: MQTT communication layer
- **esp_xiaozhi_board**: Board management and UUID handling
- **esp_xiaozhi_keystore**: Keystore-based settings management
- **esp_xiaozhi_info**: Device information and OTA update API

### Dependencies

- ESP-IDF >= 5.5
- mcp-c-sdk: Model Context Protocol SDK
- Various ESP-IDF components (nvs_flash, mqtt, esp_http_client, etc.)