Release V4.2.0.1 · Telink Semiconductor/tl_ble_mesh

## V4.2.0.1(PR)

### Version

* SDK Version: tl_ble_mesh_V4.2.0.1
* Chip Version:
  - TLSR921X(B91): A2
  - TL321X: A1
* Hardware EVK Version:
  - TLSR921X: C1T213A20_V1.3
  - TL321X: C1T331A20_V1.0/C1T335A20_V1.0  
* Platform Version:
  - tl_ble_sdk V4.0.4.2
* Toolchain Version:
  - TLSR921X: TL32 ELF MCULIB V5F GCC7.4 (IDE: TelinkIoTStudio_V2024.8)
  - TL321X: TL32 ELF MCULIB V5 GCC12.2 (IDE: TelinkIoTStudio_V2024.8)

### Features
* **Supported TL321X A1 chip**
  - (Firmware)add Flash protection, set APP_FLASH_PROTECTION_ENABLE to 1 to enable, it's enabled by default.
    - Flash protection is enabled by default, and it must be enabled in production.
    - During the development phase, user should click the "Unlock" button in Telink BDT tool to unlock before erase/write the Flash.
  - (Firmware)each mesh nodes can be connected by up to three masters.
  - (Firmware)add TL321X_mesh_LPN with suspend/deepsleep_retention mode.
  - (Firmware)add TL321X_mesh_switch with suspend/deepsleep_retention mode.
* **Android/iOS**
  - add support to modify cloud URL.
  - optimize fast provision function, add logs during fast provisioning.
  - add support App to connect specified node.

### Bug Fixes
* fix the following issue by moving proxy filter initial function from connection callback to disconnection callback: ‌
  When both Phone A and Phone B connecting with node C, if Phone A disconnects and connects to node D, Phone A will fails to get the status of node C.

### Known issues
* TL321X_mesh_gw do not support USB mode currently, use uart mode by default.

### Performance Improvements
* N/A

### BREAKING CHANGES
* N/A

### Notes
* debugging tools: such as sig_mesh_tool.exe and Android apk, please make sure to use the tools of this release.
* to avoid compilation errors or loss of functionality, please update all files when upgrading the SDK.
* for the release note contents of the BLE SDK and Driver SDK mentioned in "Version", please refer to the release note files of related SDKs.
* support SIG Mesh single connection app TelinkBleMesh.

### Flash
* TLSR921X
  - P25Q80U
  - P25Q16SU
  - P25Q32SU
* TL321X
  - P25Q80U
  - P25Q16SU
  
### CodeSize
* TLSR921X
  - B91_mesh(default target)
    - Flash bin size: 156.0KB
    - IRAM size: 58.9KB
    - DRAM size: 4KB stack
  - B91_mesh_gw(default target)
    - Flash bin size: 155.2KB
    - IRAM size: 63.2KB
    - DRAM size: 4KB stack
  - B91_mesh_lpn(default target)
    - Flash bin size: 150.4KB
    - IRAM size: 52.5KB
    - DRAM size: 4KB stack
  - B91_mesh_switch(default target)
    - Flash bin size: 142.4KB
    - IRAM size: 53.5KB
    - DRAM size: 4KB stack
	
* TL321X
  - TL321X_mesh(default target)
    - Flash bin size: 161.5KB
    - IRAM size: 60.4KB
    - DRAM size: 4KB stack
  - TL321X_mesh_gw(default target)
    - Flash bin size: 161.0KB
    - IRAM size: 65.2KB
    - DRAM size: 4KB stack
  - TL321X_mesh_lpn(default target)
    - Flash bin size: 155.2KB
    - IRAM size: 54.3KB
    - DRAM size: 4KB stack
  - TL321X_mesh_switch(default target)
    - Flash bin size: 145.6KB
    - IRAM size: 54.3KB
    - DRAM size: 4KB stack
  
### Version

### Features
* **支持 TL321X A1 芯片**
  - (Firmware)添加Flash保护，设置 APP_FLASH_PROTECTION_ENABLE 等于 1来使能该功能，默认打开。
    - SDK 中默认开启 Flash 保护，在量产时必须启用。
    - 在开发阶段，用户在擦写Flash前应使用Telink BDT工具中的“Unlock”命令解锁Flash。
  - (Firmware)每个mesh节点支持最多3个master同时连接。
  - (Firmware)添加TL321X_mesh_LPN，具备suspend/deepsleep_retention休眠模式。
  - (Firmware)添加TL321X_mesh_switch，具备suspend/deepsleep_retention休眠模式。
* **Android/iOS**
  - 支持可编辑云端地址。
  - 优化fast provision功能， UI上添加更多provision过程信息显示。
  - 支持App连接指定的节点。

### Bug Fixes
* 将代理列表初始化从连接回调中移到断开连接回调修复以下问题：
  当手机A和手机B同时连接到节点C时，如果手机A断开连接并连接到节点D，手机A将无法获取节点C的状态。

### Known issues
* TL321X_mesh_gw 暂不支持usb模式，默认使用串口模式。

### Performance Improvements
* N/A

### BREAKING CHANGES
* N/A

### Notes
* 调试工具：比如sig_mesh_tool.exe和APP 安装包文件，请务必使用本次release的版本。
* 为避免编译错误以及功能丢失，升级SDK时，请确认更新全部SDK文件。
* “Version”里面提到的BLE SDK和Driver SDK的release note内容，请查阅对应SDK的release note文件。
* 支持SIG Mesh单连接app TelinkBleMesh。

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