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bsp/lpc32xx: bsp_interrupt_vector_enable()

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The interrupt enables are used to implement a priority scheme in
bsp_interrupt_dispatch().  Enable interrupts through
bsp_interrupt_vector_enable() only if they are not already enabled to
not interfere with the priority scheme while
bsp_interrupt_vector_enable() is called during interrupt dispatching.
This commit is contained in:
Sebastian Huber
2022-06-07 15:45:04 +02:00
parent 4d0d7d5413
commit 8d6190129a
1 changed files with 6 additions and 2 deletions
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8
bsps/arm/lpc32xx/irq/irq.c
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@@ -334,8 +334,12 @@ rtems_status_code bsp_interrupt_vector_enable(rtems_vector_number vector)
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
rtems_interrupt_disable(level);
lpc32xx_irq_set_bit_in_register(vector, LPC32XX_IRQ_OFFSET_ER);
lpc32xx_irq_set_bit_in_field(vector, &lpc32xx_irq_enable);
if (!lpc32xx_irq_is_bit_set_in_field(vector, &lpc32xx_irq_enable)) {
lpc32xx_irq_set_bit_in_field(vector, &lpc32xx_irq_enable);
lpc32xx_irq_set_bit_in_register(vector, LPC32XX_IRQ_OFFSET_ER);
}
rtems_interrupt_enable(level);
return RTEMS_SUCCESSFUL;