8.8.1.1.2 Code

SAM D20 Xplained Pro.

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_TC4_MCX_0
#define CONF_EVENT_USER         EVSYS_ID_USER_TC3_EVU

SAM D21 Xplained Pro.

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_TC4_MCX_0
#define CONF_EVENT_USER         EVSYS_ID_USER_TC3_EVU

SAM R21 Xplained Pro.

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_TC4_MCX_0
#define CONF_EVENT_USER         EVSYS_ID_USER_TC3_EVU

SAM D11 Xplained Pro.

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_TC2_MCX_0
#define CONF_EVENT_USER         EVSYS_ID_USER_TC1_EVU

SAM L21 Xplained Pro

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_NONE
#define CONF_EVENT_USER         EVSYS_ID_USER_PORT_EV_0

SAM L22 Xplained Pro

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_NONE
#define CONF_EVENT_USER         EVSYS_ID_USER_PORT_EV_0

SAM DA1 Xplained Pro.

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_TC4_MCX_0
#define CONF_EVENT_USER         EVSYS_ID_USER_TC3_EVU

SAM C21 Xplained Pro

#define CONF_EVENT_GENERATOR    EVSYS_ID_GEN_NONE
#define CONF_EVENT_USER         EVSYS_ID_USER_PORT_EV_0

Copy-paste the following setup code to your user application:

static void configure_event_channel(struct events_resource *resource)
{
    struct events_config config;

    events_get_config_defaults(&config);

    config.generator      = CONF_EVENT_GENERATOR;
    config.edge_detect    = EVENTS_EDGE_DETECT_RISING;
    config.path           = EVENTS_PATH_SYNCHRONOUS;
    config.clock_source   = GCLK_GENERATOR_0;

    events_allocate(resource, &config);
}

static void configure_event_user(struct events_resource *resource)
{
    events_attach_user(resource, CONF_EVENT_USER);
}

Create an event resource struct and add to user application (typically the start of main()):

struct events_resource example_event;

Add to user application initialization (typically the start of main()):

configure_event_channel(&example_event);
configure_event_user(&example_event);