diff options
Diffstat (limited to 'nuttx/configs/sam4e-ek')
| -rw-r--r-- | nuttx/configs/sam4e-ek/src/sam_buttons.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/nuttx/configs/sam4e-ek/src/sam_buttons.c b/nuttx/configs/sam4e-ek/src/sam_buttons.c index 9f6283878..72ef722a5 100644 --- a/nuttx/configs/sam4e-ek/src/sam_buttons.c +++ b/nuttx/configs/sam4e-ek/src/sam_buttons.c @@ -96,11 +96,24 @@ static xcpt_t board_button_irqx(int irq, xcpt_t irqhandler, xcpt_t *store) oldhandler = *store; *store = irqhandler; - /* Configure the interrupt */ + /* Are we attaching or detaching? */ + + if (irqhandler != NULL) + { + /* Configure the interrupt */ + + sam_gpioirq(irq); + (void)irq_attach(irq, irqhandler); + sam_gpioirqenable(irq); + } + else + { + /* Detach and disable the interrupt */ + + (void)irq_detach(irq) + sam_gpioirqdisable(irq); + } - sam_gpioirq(irq); - (void)irq_attach(irq, irqhandler); - sam_gpioirqenable(irq); irqrestore(flags); /* Return the old button handler (so that it can be restored) */ |