* The main thread priority can be configured by Kconfig;
* Add the checking of kernel object type, which can effectively avoid the problem of continuing to use kernel objects after they are destroyed.
* Add the idle hook list to mount multiple idle hook, and can be configured by Kconfig.
* Add the device_ops operation set to reduce the footprint of device object.
* Remove the special memory operation in application module when using SLAB memory management algorithm.
* Move application module from the kernel to `libc/libdl`.
* Enhance the debug information output of `rtdbg.h` file.
* In Keil/IAR tool chain, the `RT_USED` is used to keep symbols and avoid to add more argument or section in link phrase.
## Components
* Remove all of external codes, which will be moved to packages in the future.
* Add initialization flag for shell, file system, network protocol stack etc to prevent repeated initialization;
* Enable the long file name feature of ELM FatFs in default.
* Change DFS FD to dynamic allocation mode. The maximum number of allocation is still DFS_FD_MAX.
* Add dfs_fdtable_get() function to get different fdtable;
* Add more DFS error messages, and provide easy to understand log when abnormal.
* Fix the disk format issue of FatFs file system when multiple FatFs file systems are mounted.
* Remove the folder enter feature in msh when input a folder name;
* Add `int finsh_set_prompt (const char * prompt);` routine for setting a custom prompt for msh;
* Add the VBUS configuration in Kconfig.
* Move the application module from kernel to `libc/libdl` component;
* Rewrite most of the management code for application module: replace the original object container with the object list; split the symbol resolution code into different processor architecture etc.
* Update the application module chapter in the programming guide, and change it into dynamic module chapter.
* Overwrite the exit() function of newlib to take over the processing of exit for a dlmodule.
* Add SAL (Socket Abstraction Layer) component for adapting different protocol stacks and network implementations, and update the relevant sections of the programming guide;
* Add AT component, including AT client, AT server and AT Socket function;
* Remove the poll/select API of DFS_NET and move them to SAL component.
* Remove the strong dependence of lwIP component for DFS_NET and replace it with Kconfig configuration in SAL.
* Add the DHCP server function with lwIP raw API;
* Fix the wait queue none-initialization issue in socket allocation of lwIP.
* When a thread is about to block on a wait queue, fix the wake up issue for `rt_wqueue_wakeup' is executed to wake up that thread;
* Add the PWM driver framework;
* Fix the sdio_irq_wakeup release issue in the MMC/SD framework.
* Fix the problem of DMA handling in the serial driver framework.
* Update SFUD to v1.0.6 version;
## BSP
* Fix the SP issue when hard fault occurs for ARM Cortex-M arch;
* Add C-Sky CK802 architecture porting;
* Add Realtek amebaz WiFi SOC (rtl8710bn) BSP;
* Update imxrt1052-evk firmware SDK to support B model chip.
* Fix the copying packets issue in the Godson 1C BSP when sending message.
* The Nuvoton m05x/m451 BSP are changed into the main() entry mode, and supports GCC compilation;
* Fix the inconsistency issue between touch range and LCD resolution in qemu-vexpress-a9.
* Change the location of hook invoking in rt_event_send, which can better reflect the event value to the system view.
* Fix the rt_realloc() issue in memheap;
* Fix the vstart_addr issue in the dynamic library.
* Ensure that signal is more standardized and remove si_errno members from siginfo_t;
* Add rt_thread_mdelay() API for millisecond delay in thread.
## Components
* Fix the DFS mkfs issue of FatFs (which is a merge issue introduced in RT-Thread V3.0 upgrade).
* Fix dfs_net poll issue, if there is already received data, the upper layer can not wake up and deal with data.
* Fix the socket issue in dfs_net if lwip_socket failed(Bluebear233);
* If the dfs_net/socket feature is used within lwIP 1.x version, a compiler error will be returned.
* Fix the DFS df() information issue;
* Fix the audio device write issue while the interrupt is not properly recovered.
* Fix the one-shot timeout issue in the hardware timer driver framework.
* In ENC28J60 driver, the "link change interrupt" is enable in initialization.
* Fix the data issue in put data into ringbuffer.
* Add UDP information display in netstat command;
* Fix the USB HS issue when sending 1 bytes of data will cause two times of transmission.
* Change the registration mechanism of USB Class Driver and Class Driver can be registered in package.
* Add USB Device driver framework for HS USB.
* Enhance the compatibility of time() function for different compilers;
* Add more configuration items for DHCPD in menuconfig.
## BSP
* Temporarily remove the Andes AE210P transplant because of the mistakenly use SVC for context switching.
* Add SD/MMC drive in Allwinner ARM9 BSP;
* Add SPI and SPI Flash drivers to Allwinner ARM9 BSP.
* Add GD32's gd32303e-eval development board support;
* gd32450z-eval supports GNU GCC compilation;
* Rewriting the hifive1 board level support package for the risc-v architecture;
* About i.MX RT1052, we have completed various development board support: ATK, Fire, seeed studio;
* On i.MX RT1052, add the cache-ops functions;
* On i.MX RT1052, add I2S driver and WM8960 codec driver support;
* Improve ETH driver support (including support for Fire development board) on i.MX RT1052.
* Add Hardware Timer driver support on i.MX RT1052.
* On i.MX RT1052, add GPIO driver;
* On i.MX RT1052, add RTC driver;
* On i.MX RT1052, improve SD/MMC driver;
* On i.MX RT1052, add SPI driver and SPI Flash driver (connect to SFUD component);
* Add USB Device driver on i.MX RT1052.
* Add README files and KConfig files in LPC408x BSP;
* Add README documents in LPC5460x-LPCXpresso BSP;
* Add the display controller driver (Sundm75) in Godson 1C BSP.
* Add CAN driver in Loongson 1C BSP(Sundm75);
* In GPIO driver of Loongson 1C BSP, add (external) interrupt feature (Zhuangwei);
* Use SPI automatic initialization in Loongson 1C BSP.
* Add I2C driver in Loongson1C BSP(Sundm75);
* Add resistive touch screen driver in Loongson 1C BSP(Sundm75);
* In Loongson 1C BSP, the components initiliazation and main function is enable(Zhuangwei).
* Add self bootup in Loongson1C BSP (Zhuangwei);
* Add README files and KConfig files to Loongson 1C BSP(Zhuangwei).
* Fix the rx descriptor issue in init_rx_desc function in NUC472 BSP (Bluebear233);
* Add AC97 Audio driver in QEMU-VExpress-A9 BSP;
* Add README description file in QEMU-VExpress-A9;
* Add I2C driver in stm32f4xx-HAL BSP, and README description file;
* Add cache-ops in stm32f7-disco BSP, and README description file;
* Add README description file in stm32f10x/stm32f10x-HAL;
* Add README specification files and KConfig configuration files in stm32f40x BSP;
* Add KConfig configuration file in stm32f20x BSP;
* Add README description file to stm32f411-nucleo BSP and enable GNU GCC tool chain support;
* Add GPIO driver and README description file in stm32f429-apollo BSP;
* Add KConfig configuration files in stm32f429-armfly BSP;
* Add README description file in stm32l476-nucleo BSP;
* Because V2M-MPS2 does not support in 32-bit machine simulation operation, temporarily remove this BSP.
* Add README description file and some firmware file, such as u-boot.bin, wifi firmware etc, in X1000 BSP;
Tools
* Add detection feature for the version of GNU GCC tool chain and libc function feature.
* Add the function of VSCode editor assistance, and support scons --target=vsc -s under BSP folder to generate configuration files for VSCode.
* Add the detection of verson of IAR;
* Add the ProjectInfo (Env) function to get information about target: all source files should be compiled, all header files, all macro definitions, the search paths for header file etc.
* Add scheduler protection when do cleanup for a detached thread;
* Fix the object_find issue when enable module feature;
* Improve POSIX signal support and add rt_signal_wait function and POSIX sigwait interface;
* When enable finsh shell, rtthread.h header file includes the API file of finsh. Therefore, the application code can use command export feature without finsh.h file;
* Improve the comments of rtdbg.h file. In RT-Thread, just use following code to add debug log feature:
```c
#define DBG_ENABLE
#define DBG_SECTION_NAME "[ MOD]"
#define DBG_LEVEL DBG_INFO
#define DBG_COLOR
#include<rtdbg.h>
```
When close the DBG_ENABLE definition, the debug log will be closed. Otherwise, the `dbg_log(level, fmt, ...)` can be used to print debug information.
DBG_SECTION_NAME - The prefix information for each log line;
DBG_LEVEL - The debug log level;
DBG_COLOR - Whether use color log in console.
## Components
* Fix the flag issue of fopen in GNU GCC;
* Fix the pthread_detach issue when used for a detached pthread;
* Fix the _TIMESPEC_DEFINED issue in IAR 8;
* Add libc_stdio_get_console() interface for returns the fd of console;
* Move UI engine component as a standalone package;
* Add a unify TF/SD card driver on SPI device bus;
* Add soft-RTC device, therefore device can synchronize with network time and maintains the time with OS tick later;
* Change the open/fcntl/ioctl API to POSIX standard interface;
* Fix ramfs issue when update with RTT 3.0.x;
* Fix the elm fatfs umount issue; (liu2guang)
* ignore the O_CREAT flag when open a device file;
* Improve VCOM class driver in USB stack; (ChunfengMu, Aubr.Cool)
## BSP
* Fix the potential issue when enable Cortex-M hardware FPU;
* Add v2m-mps2 bsp, which is used in Keil MDK5 for Cortex-M4/M7/M23/M33 simulation;
* Add sdcard driver for stm32f10x-HAL;(liu2guang)
* Improve GNU GCC support for stm32f10x-HAL;(Xeon Xu)
* simulator bsp can be used in Windows/Visual C++ and update SDL to v2.0.7;
* Add gk7102 bsp by gokemicro;(gokemicro)
* Add allwinner F1C100s ARM9 bsp;(uestczyh222)
* Fix some issues in peripherals drive library of NXP LPC54608/i.MX RT; (Valeriy Van)
## Tools
* scons building script will automatically add `_REENT_SMALL` macro when enable newlib nanao;
* Modify building script for Python 3.x and scons 3.0
* 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.
# RT-Thread v2.1.0 Change log
This release is the final release for RT-Thread v2.1.0 branch. This release has been delayed many time. After committed fh8620 and x1000 bsp, we are proud to announce this branch release of the official version.
The change log since last stable version:
## Kernel:
* Move the init component to the kernel.
* Fix the device open flag issue.
* Add assertion hook.
* Better application module support.
* Does not lock scheduler when invoking soft-timer timeout function.
## Board Support Package:
* fh8620, which is provided by Shanghai Fullhan Microelectronics Co., Ltd. It's a IP camera chip with ARM1176, 300MHz, 16KB I-Cache and 16kB D-Cache.
* x1000 bsp. The CPU is a XBurst CPU 1.0GHz, MIPS-based, from Ingenic Semiconductor Co.,Ltd.
* imx6sx bsp, only the Cortex-A9 core porting in the NXP i.MX6 solox. BTW, another full Kinetis series porting was created in rt-thread_fsl, which is maintained by NXP employee.
* lpc5410x bsp, only the Cortex-M4 core porting.
* ls1cdev bsp for Loogson1C board.
* dm365 bsp.
* nRF51822/nRF52832 bsp.
* stm32f7-disco bsp, the first ARM Cortex-M7 porting in RT-Thread.
* stm32f411-nucleo bsp.
* Add IAR compiler support in beaglebone bsp.
## Components:
* Add more socket fd operators in DFS with a virtual lwIP file system ops.
* Add CAN/Hardware Timer device drivers.
* Fix the SDIO issue to support sdio wifi device.
* Add eMMC support in SD/MMC device drivers;
* Fix the NAT configured enter reset issue in lwIP NAT.
* RTGUI come back, but as a UI engine for blend point/line/rect and bitmap etc.
* Add nanopb porting, a small code-size Protocol Buffers implementation;
* Add paho-mqtt porting, the Eclipse Paho MQTT C/C++ client for Embedded platforms;
* Update freetype to 2.5.4 version.
* Enhance msh for file operations.
* Split the exported commands of finsh shell to a standalone section: ".rodata.name"
