Function extint_register

Registers an asynchronous callback function with the driver.

enum status_code extint_register_callback(
		const extint_callback_t callback,
		const uint8_t channel,
		const enum extint_callback_type type)

Registers an asynchronous callback with the EXTINT driver, fired when a channel detects the configured channel detection criteria (e.g. edge or level). Callbacks are fired once for each detected channel.

Note: NMI channel callbacks cannot be registered via this function; the device's NMI interrupt should be hooked directly in the user application and the NMI flags manually cleared via extint_nmi_clear_detected().

Table 1. Parameters
Data direction	Parameter name	Description
[in]	callback	Pointer to the callback function to register
[in]	channel	Logical channel to register callback for
[in]	type	Type of callback function to register

Returns

Status of the registration operation.

Table 2. Return Values
Return value	Description
STATUS_OK	The callback was registered successfully
STATUS_ERR_INVALID_ARG	If an invalid callback type was supplied
STATUS_ERR_ALREADY_INITIALIZED	Callback function has been registered, need unregister first

Function extint_register_callback()

Returns