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nrf5/hal: Adding initialization of LFCLK if not already enabled in hal_rtc.

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This commit is contained in:
Glenn Ruben Bakke 2017-03-06 20:06:47 +01:00
parent 7000e0a2a0
commit 87e1616488
1 changed files with 7 additions and 0 deletions
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7
nrf5/hal/hal_rtc.c
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@ -39,6 +39,13 @@ void hal_rtc_callback_set(hal_rtc_app_callback callback) {
void hal_rtc_init(hal_rtc_conf_t const * p_rtc_conf) {
p_rtc_conf->p_instance->PRESCALER = (32768 / p_rtc_conf->frequency) - 1; // approx correct.
hal_irq_priority(p_rtc_conf->irq_num, p_rtc_conf->irq_priority);
// start LFCLK if not already started
if (NRF_CLOCK->LFCLKSTAT == 0) {
NRF_CLOCK->TASKS_LFCLKSTART = 1;
while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0);
NRF_CLOCK->EVENTS_LFCLKSTARTED = 0;
}
}
void hal_rtc_start(hal_rtc_conf_t const * p_rtc_conf, uint16_t period) {