* [bsp/gd32]Optimize UART

* [bsp/gd32]Optimize UART

* [lwip-2.1.2] improve lwipopts.h

* 增加LWIP RTT侧版本定义

* 移动调整cc.h和lwipopts.h定义

* lwip2.1.2 2.0.3抽出lwipopts.h lwippools.h

* remove lwip1.4.1 lwipopts.h

* [update] modify the default config through v1.4.1

* delete the useless macro and modify some unclear comments.

* [lwipopts.h] 完善头文件相关宏以及临界区保护相关宏

* remove latest version label
Co-authored-by: Nliuxianliang <liuxianliang@rt-thread.com>

* [lwip] integrate lwip porting layer

* Lwip 通用文件梳理 (#2)

* [modify] extract the common files for different version about lwip.

* [update] the initialization logic of lwIP.

* 整理源码结构

* ethernetif 头文件 ""改为<>

* 整理代码

* add macro definition "RT_USING_DEVICE_IPC".

* [update] mandatory selected "RT_USING_DEVICE_IPC".

* [modify] compile error for lost "lwip/init.h"
Co-authored-by: Nxiangxistu <52819708+xiangxistu@users.noreply.github.com>
Co-authored-by: Nliuxianliang <liuxianliang@rt-thread.com>

* [fix][components][utilities]adjust the order of compiler macros
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [modify][components][utilities]This PR complies with RT-Thread code specification
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [fix][components][utilities][var_export]replace the search algorithm and fix some problems
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [modify][components][utilities][var_export]make the code more beautiful
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [Arduino][stm32l475] enable i2c bus device

* 增加默认i2c总线设备名称

* [libcpu/aarch64] add smp support

* [libcpu/aarch64] rt_hw_trap_irq get irq instead of iar when using gicv2

* [libcpu/aarch64] disable irq/fiq when switch thread

* [net] adjust folder structure
- 将lwip相关的文件夹，移入lwip文件夹
- Kconfig 分散到at netdev lwip sal文件夹中，使用menuconfig代替menu

* add ch579m bsp

Author:    Tuber <tuber@xyza.cn>
Date:      Wed Feb 16 07:20:23 2022 +0000

* fix uart reg value error and format code

* change file encode to utf-8

* add references

* [dmodule] add <fcntl.h>

* [libcpu/aarch64] add smp support
* [libcpu/aarch64] rt_hw_trap_irq get irq instead of iar when using gicv2

When we create thread A by rt_thread_init but do
    not init the thread object,and then create thread
    B in the thread A,it maybe crash.

* [fix][components][utilities]adjust the order of compiler macros
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [modify][components][utilities]This PR complies with RT-Thread code specification
Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

Signed-off-by: NWillianChan <chentingwei@rt-thread.com>

* [add] src/clock.c add hook for rt_tick_increase

* [fix] clock.c rt_tick_incerase hook function

* Update clock.c
Co-authored-by: Nguo <guozhanxin@rt-thread.com>

1. Add default rtconfig.h header.
2. Fix IP reset issue.
Co-authored-by: NWayne Lin <wclin@nuvoton.com>

* [bsp][essemi] update es32f36xx libraries.
* [bsp][essemi] add led_pin control.

* [bsp][art-pi] add spi lcd ili9488 driver
* [bsp][art-pi] support LVGL display
* [bsp][artpi] support LVGL indev
* [bsp][artpi] debug LVGL indev with ft6236
* [bsp][artpi] swap and invert touchpad coordinate
* [bsp][artpi] redundant declarations
* [bsp][artpi] indent BSP_USING_LVGL config
* [bsp][artpi] default build debug version
* [bsp][artpi] fix BSP_USING_LVGL Kconfig

原始提交PR：https://gitee.com/rtthread/rt-thread/pulls/372
提交者：https://gitee.com/wei-handong

----------------------

在TI公司C6000 DSP处理器上成功移植rt-thread操作系统；主要在libcpu/ti-dsp/c6x添加keystone架构底层代码，在bsp/ti-c6678添加bsp工程，该工程已在本人的开发板上成功运行

* 添加TMS320C6678处理器，keystone架构底层代码

* 添加支持中断栈部分代码，修改格式

* 修改汇编rt_hw_context_switch_to处关于时间槽的使用；修改格式

* 修改使用C语言构建任务栈帧，清除fls和ffs对<c6x.h>文件的依赖

* 修改bsp tms320c6678工程，并测试

* 删除依赖TI的KeyStone_common.c文件

* 添加编译说明

* update bsp/ti-tms320c6678/README.md.

* format code
Co-authored-by: NHuang bo <hb265419@126.com>
Co-authored-by: hdwei <1147479335@qq.com>
Co-authored-by: Nbernard <bernard.xiong@gmail.com>
Co-authored-by: Nrtthread-bot <48120998+rtthread-bot@users.noreply.github.com>
Co-authored-by: Meco Man <920369182@qq.com>