struct rt_device_ops 结构体增加宏定义

fixed gcc assembly option in rtconfig.py for imxrt1064-nxp-evk

[bsp/nrfx5]: fix the board of nrf52832(pca10040)

[DFS] clean the unnecessary checking

fix startup files

[fixed]增加条件编译，防止RT_USING_DFS没有定义时 _sys_flen()出现编译警告：stat变量定义但没有被调用 的问题

[code style] spelling mistake : PROERTY -> PROPERTY

[modify] if ... else if constructs to be terminated with an else clau…

[add] a macro to be isolated while using signals in rt_mutex_take fun…

[add] switch default clause

[format] enumeration define two styles: define first or all.

bugfixed on SConscript

[nuvoton] Sync drivers of Nuvoton-M480 platform.

[bsp/nrf5x]: add the driver of pwm

2. Fix spi/qspi/uspi TX/RX PDMA trigger issue.
3. Drain RX FIFO to remove remain FEF frames in FIFO.
4. Implement RT_DEVICE_CTRL_CLOSE in uart/uuart/scuart driver.

[modify] internal function 'isdigit' name to '_isdigit'

[bsp][stm32] update stm32h743-st-nucleo bsp scripts

fix在rt_event_recv函数中，如果事件已经满足无需阻塞的情况下，没有给thread->event_set/event_info…

avoid deadlock (rt_hw_interrupt_disable and rt_enter_critical when en…

[format] code style of rt_strcmp function

Update SConstruct

Update SConstruct fix compilation error

Specify date string length in FINSH date command.

libc ctime returns a fixed 25 character string without a NULL terminator. Print it without specifying length in FINSH date command prints extra contents and could potentially be dangerous.