STM32 关闭全局中断

/** \brief  Enable IRQ Interrupts

  This function enables IRQ interrupts by clearing the I-bit in the CPSR.
  Can only be executed in Privileged modes.
 */
__attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_irq(void)
{
  __ASM volatile ("cpsie i" : : : "memory");
}


/** \brief  Disable IRQ Interrupts

  This function disables IRQ interrupts by setting the I-bit in the CPSR.
  Can only be executed in Privileged modes.
 */
__attribute__( ( always_inline ) ) __STATIC_INLINE void __disable_irq(void)
{
  __ASM volatile ("cpsid i" : : : "memory");
}