RT-Thread 3.0 has been released.

Platform:

• Add more POSIX features, for example poll/select, signal, termios etc.
• Add waitqueue for poll feature.
• Use fops for file operation. There are two ways to visit device object: rt_device_* API, the file API(open/read/write/close etc).
• Change the type of cmd from uint8_t to int in control interface.
• Add more C++ object for RT-Thread Kernel Object.
• Add wlan driver framework for wlan device operation.
• Integrate SFUD into RT-Thread to unify the operations of spi flash.
• Update lwIP to v2.0.2 version.

Tools:

• Enable packages, with ENV tool.
• menuconfig & Kconfig.
• Add scons --dist for make a distribution for specified BSP.

BSP:

• more MCU porting.

IoT:

• put more IoT components as packages, for example, MQTT, CoAP, HTTP, TLS etc.