Kernel object

[components/drivers] update pipe.c

增加stm32h743-atk-apollo对pcf8574 和 uart2的支持

更新mini2440 bsp包:

Export file examples to MSH

also:
- change static buffer to dynamiclly allocated buffer.
- replace Chinese comment to English comment in some files.
- add apache-2 license

Fixed stackover flow bug when create pipe->fifo

remove redefinition 'mode_t'

Fix some spelling mistakes

2. Modify the return code to -1 when failed
3. Change the mounting filesystem from ramfs to sdcard
4. Replace RT_USING_RTGUI with PKG_USING_GUIENGINE and remove RT_USING_FTK

1、加入Kconfig以支持图形化菜单配置
2、编译脚本中添加动态模块编译参数
3、开启自动初始化机制支持
4、重构串口驱动以解决开启posix支持后终端无响应问题
5、解决dm9000网卡驱动link up问题
6、添加mnt.c文件用来挂载文件系统

MIPS: fix FPU compile error for ls1bdev

[components][serial]关闭uart时，反初始化tx_dma->data_queue，防止内存泄漏

[components][dataqueue]add rt_data_queue_deinit

Signed-off-by: Nduhuanpeng <548708880@qq.com>

rt_hw_fpu_init() is defined in mips_fpu.h,
in board.c refered it without including mips_fpu.h.
Signed-off-by: Nduhuanpeng <548708880@qq.com>

-mips32 will break the compilation if FPU enabled.
Signed-off-by: Nduhuanpeng <548708880@qq.com>

Signed-off-by: Nduhuanpeng <548708880@qq.com>

gcc will remove this "unused" routine and cause a linking error.
symbol not found when linking.
Signed-off-by: Nduhuanpeng <548708880@qq.com>

为FINSH添加clear命令

Fixed wrong output information

fixed i2c bug, change i2c_dbg() to LOG_E().

Add ls2k bsp