title: Disable IRQ on STM32
body: <p>Is there any way to disable all irq from Cortex M3 MCU except one ?</p>
  
  <p>My issue is that I have a system running several kinds of irq with various priority levels and I want to disable all irq except one in a particular state. </p>
  
  <p>I know I can disable all irq by using "__disable_irq()" instruction but I can't enable one irq after calling this instruction if I didn't call "__enable_irq()" before.</p>
  
  <p>Thanks for your help,</p>
  
  <p>Regards</p>