RT-Thread OpenSource RTOS v4.0.3 Released!

We are thrilled to announce the release of RT-Thread OpenSource RTOS v4.0.3 at the beginning of 2021.

RT-Thread RTOS 4.0.3 Release Highlights

Kernel

• Add the global macro definition of RTTHREAD
• Add options of algorithms for user stack
• Improve the stability of process scheduler in UP and SMP systems
• Clean the resources before the current thread exits.
• Fix bugs on kernel timer and IPC
• Fix the issue in delay_util()
• Remove invocations of rt_system_object_init() and rt_system_tick_init() in kernel
• Remove the configuration macro RT_USING_FINSH

Components

Filesystem

• Add support for Device files in DFS
• Update elmfat to R0.14 patch 1
• Fix existing issues

Network Relatives

• Improve the SAL component, add the configuration option
• SAL_INTERNET_CHECK to enable or disable network state check
• Improve the AT component to support multiple network cards. Fix the issue of memory leak in some scenarios
• Improve the DHCP feature
• Fix existing issues

Driver Framework

• Add the interface rt_pin_get() to PIN drivers
• Update the RT-Thread PM framework to version 2.0
• Add more manufacturer types and customized commands support in sensor drivers
• Improve the USB framework. Fix the issues about USB HOST driver and device recognition in MAC OS
• Fix existing issues

BSP

• Add 15 BSPs for STM32 series
• Add 25 BSPs for non-STM32 chips
• Improve the drivers for STM32 BSPs
• Improve the loogson BSPs, add more drivers
• Improve raspi4–32 BSP, add drivers of DMA, BSC, DSI LCD/Touch, waveshare SPI LCD/Touch, Watchdog, HDMI, SDIO, GPIO interrupts
• Add READMEs in English for BSPs commonly used abroad
• Fix existing issues

Development Tool

• Add Studio IDE dist features for STM32 BSPs
• Add C++ support for Eclipse objects
• Keep the user-defined lib configuration after the execution of --target=Eclipse
• Optimize the process to generate rtconfig.h by running scons --menuconfig
• Update building.py and add the option tackanalysis
• Fix the error in makeimg.py when running in Linux

Download RT-Thread v4.0.3 source code

Read Full Release Notes!

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