12-使用固件库点亮LED

saber

typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState;

#define assert_param(expr) ((void)0)
---分隔符------



[mw_shl_code=c,true]void RCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_RCC_APB2_PERIPH(RCC_APB2Periph));
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  if (NewState != DISABLE)
  {
    RCC->APB2ENR |= RCC_APB2Periph;
  }
  else
  {
    RCC->APB2ENR &= ~RCC_APB2Periph;
  }
}[/mw_shl_code]
----分隔符-----
RCC_APB2PeriphClockCmd(LED_G_GPIO_CLK,ENABLE);

有大佬可以解释下 assert_param(expr) ((void)0)   

非常感谢

WishWish

https://blog.csdn.net/sunheshan/article/details/25828811