STM32的硬件定时器在 APBxCLKDivider 为 RCC_HCLK_DIV1 的时候，timer clocks 频率等于外设总线时钟PCLKx. 反之 timer clocks 为 PCLKx 的2倍.

[bsp/nrf5x/libraries/drivers] add wdt driver

add nrf5x adc driver

[update] stm32mp157a-st-ev1 add ci and format code.

fixed the iterator failure for softtimer list timeout check.

update error SFUD support manufacturer (Micronix -> Macronix)

[auto pr] rtthread-bot

Change I2C configuration hierarchy

[update] add stm32mp1-st-ev1 bsp.

[BSP][stm32f429-st-disco] Add SDRAM, LCD port files

[bsp] stm32:fix the lcd driver for stm32f429 discovery board.

[stm32] perform an automatic ADC calibration using HAL_ADCEx_Calibration_Start()

[stm32] perform an automatic ADC calibration to improve the conversion accuracy using function HAL_ADCEx_Calibration_Start().

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