linguini1 commented on PR #16281:
URL: https://github.com/apache/nuttx/pull/16281#issuecomment-2842016830
> @linguini1 I'm not able to get this to trigger an interrupt. Is this code
correct? Is it possible that you can give me a testing code / snippet to run
that also worked for you? This way we can make sure nothing breaks.
Sorry for the late response, here is the full snippet I used for enabling
the interrupts; it was done as part of the standard RP2040 GPIO driver.
```c
/* Attaching interrupts */
static int gpint_attach(struct gpio_dev_s *dev,
pin_interrupt_t callback)
{
struct rp2040gpint_dev_s *rp2040gpint =
(struct rp2040gpint_dev_s *)dev;
int irq = g_gpiointinputs[rp2040gpint->rp2040gpio.id];
int ret;
gpioinfo("Attaching the callback\n");
/* Make sure the interrupt is disabled */
rp2040_gpio_disable_irq(irq);
ret = rp2040_gpio_irq_attach(irq,
RP2040_GPIO_INTR_EDGE_LOW |
RP2040_GPIO_INTR_EDGE_HIGH,
rp2040gpio_interrupt,
&g_gpint[rp2040gpint->rp2040gpio.id]);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: gpint_attach() failed: %d\n", ret);
return ret;
}
gpioinfo("Attach %p\n", callback);
rp2040gpint->callback = callback;
return OK;
}
/* Inside rp2040_dev_gpio_init() */
for (i = 0; i < BOARD_NGPIOINT; i++)
{
/* Setup and register the GPIO pin */
g_gpint[i].rp2040gpio.gpio.gp_pintype = GPIO_INTERRUPT_PIN;
g_gpint[i].rp2040gpio.gpio.gp_ops = &gpint_ops;
g_gpint[i].rp2040gpio.id = i;
gpio_pin_register(&g_gpint[i].rp2040gpio.gpio, g_gpiointinputs[i]);
/* Configure the pins that will be used as interrupt input */
rp2040_gpio_init(g_gpiointinputs[i]);
/* pull-up = false : pull-down = true */
rp2040_gpio_set_pulls(g_gpiointinputs[i], false, true);
pincount++;
}
```
I tested using the `gpio` example which uses `sigwait`.
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