Exemplo n.º 1
0
void up_disable_irq(int irq)
{
  uintptr_t regaddr;
  uint32_t regval;
  uint32_t bit;

  if (lpc17_irqinfo(irq, &regaddr, &bit, NVIC_CLRENA_OFFSET) == 0)
    {
      /* Modify the appropriate bit in the register to disable the interrupt.
       * For normal interrupts, we need to set the bit in the associated
       * Interrupt Clear Enable register.  For other exceptions, we need to
       * clear the bit in the System Handler Control and State Register.
       */

      if (irq >= LPC17_IRQ_EXTINT)
        {
          putreg32(bit, regaddr);
        }
      else
        {
          regval  = getreg32(regaddr);
          regval &= ~bit;
          putreg32(regval, regaddr);
        }
    }
#ifdef CONFIG_GPIO_IRQ
  else if (irq >= LPC17_VALID_FIRST0L)
    {
      /* Maybe it is a (derived) GPIO IRQ */

      lpc17_gpioirqdisable(irq);
    }
#endif

  lpc17_dumpnvic("disable", irq);
}
Exemplo n.º 2
0
void up_disable_irq(int irq)
{
  uint32_t regaddr;
  uint32_t regval;
  uint32_t bit;

  if (lpc17_irqinfo(irq, &regaddr, &bit) == 0)
    {
      /* Clear the appropriate bit in the register to enable the interrupt */

      regval  = getreg32(regaddr);
      regval &= ~bit;
      putreg32(regval, regaddr);
    }
#ifdef CONFIG_GPIO_IRQ
  else if (irq >= LPC17_VALID_FIRST0L)
    {
      /* Maybe it is a (derived) GPIO IRQ */

      lpc17_gpioirqdisable(irq);
    }
#endif
  lpc17_dumpnvic("disable", irq);
}