static int counter_nrfx_set_top_value(struct device *dev, u32_t ticks,
counter_top_callback_t callback,
void *user_data)
{
const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
const nrfx_rtc_t *rtc = &nrfx_config->rtc;
struct counter_nrfx_data *dev_data = get_dev_data(dev);
for (int i = 0; i < counter_get_num_of_channels(dev); i++) {
/* Overflow can be changed only when all alarms are
* disables.
*/
if (nrfx_config->ch_data[i].callback) {
return -EBUSY;
}
}
nrfx_rtc_cc_disable(rtc, TOP_CH);
nrfx_rtc_counter_clear(rtc);
dev_data->top_cb = callback;
dev_data->top_user_data = user_data;
dev_data->top = ticks;
nrfx_rtc_cc_set(rtc, TOP_CH, ticks, callback ? true : false);
return 0;
}
static void event_handler(nrfx_rtc_int_type_t int_type, void *p_context)
{
struct device *dev = p_context;
struct counter_nrfx_data *data = get_dev_data(dev);
if (int_type == COUNTER_TOP_INT) {
/* Manually reset counter if top value is different than max. */
if ((data->top != COUNTER_MAX_TOP_VALUE)
#if CONFIG_COUNTER_RTC_WITH_PPI_WRAP
&& !get_nrfx_config(dev)->use_ppi
#endif
) {
nrfx_rtc_counter_clear(&get_nrfx_config(dev)->rtc);
}
nrfx_rtc_cc_set(&get_nrfx_config(dev)->rtc,
TOP_CH, data->top, true);
if (data->top_cb) {
data->top_cb(dev, data->top_user_data);
}
} else if (int_type > COUNTER_TOP_INT) {
alarm_event_handler(dev, CC_TO_ID(int_type));
}
}
