19.2.3 ext_irq_register

int32_t ext_irq_register(
    const uint32_t pin,
    ext_irq_cb_t cb
)

Parameters

pin

Type: const uint32_t

Pin to enable external IRQ on

cb

Type: ext_irq_cb_t typedef

Callback function

Returns

Type: int32_t

Registration status.

-1

Passed parameters were invalid

0

The callback registration is completed successfully