static int init_rtc(struct device *dev,
const nrfx_rtc_config_t *config,
nrfx_rtc_handler_t handler)
{
struct device *clock;
const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
const nrfx_rtc_t *rtc = &nrfx_config->rtc;
clock = device_get_binding(DT_NORDIC_NRF_CLOCK_0_LABEL "_32K");
if (!clock) {
return -ENODEV;
}
clock_control_on(clock, (void *)CLOCK_CONTROL_NRF_K32SRC);
nrfx_err_t result = nrfx_rtc_init(rtc, config, handler);
if (result != NRFX_SUCCESS) {
LOG_INST_ERR(nrfx_config->log, "Failed to initialize device.");
return -EBUSY;
}
get_dev_data(dev)->top = COUNTER_MAX_TOP_VALUE;
LOG_INST_DBG(nrfx_config->log, "Initialized");
return 0;
}
static int ppi_setup(struct device *dev)
{
#if CONFIG_COUNTER_RTC_WITH_PPI_WRAP
const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
struct counter_nrfx_data *data = get_dev_data(dev);
const nrfx_rtc_t *rtc = &nrfx_config->rtc;
nrfx_err_t result;
if (!nrfx_config->use_ppi) {
return 0;
}
#ifdef DPPI_PRESENT
result = nrfx_dppi_channel_alloc(&data->ppi_ch);
if (result != NRFX_SUCCESS) {
LOG_INST_ERR(nrfx_config->log,
"Failed to allocate PPI channel.");
return -ENODEV;
}
nrf_rtc_subscribe_set(rtc->p_reg, NRF_RTC_TASK_CLEAR, data->ppi_ch);
nrf_rtc_publish_set(rtc->p_reg, NRF_RTC_EVENT_COMPARE_0, data->ppi_ch);
(void)nrfx_dppi_channel_enable(data->ppi_ch);
#else /* DPPI_PRESENT */
u32_t evt;
u32_t task;
evt = nrfx_rtc_event_address_get(rtc, NRF_RTC_EVENT_COMPARE_0);
task = nrfx_rtc_task_address_get(rtc, NRF_RTC_TASK_CLEAR);
result = nrfx_ppi_channel_alloc(&data->ppi_ch);
if (result != NRFX_SUCCESS) {
LOG_INST_ERR(nrfx_config->log,
"Failed to allocate PPI channel.");
return -ENODEV;
}
(void)nrfx_ppi_channel_assign(data->ppi_ch, evt, task);
(void)nrfx_ppi_channel_enable(data->ppi_ch);
#endif
#endif /* CONFIG_COUNTER_RTC_WITH_PPI_WRAP */
return 0;
}
static int init_timer(struct device *dev, const nrfx_timer_config_t *config)
{
const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
const nrfx_timer_t *timer = &nrfx_config->timer;
nrfx_err_t result = nrfx_timer_init(timer, config, event_handler);
if (result != NRFX_SUCCESS) {
LOG_INST_ERR(nrfx_config->log, "Failed to initialize device.");
return -EBUSY;
}
nrfx_timer_compare(timer, TOP_CH, UINT32_MAX, false);
LOG_INST_DBG(nrfx_config->log, "Initialized");
return 0;
}
