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Merge pull request #2213 from pan-/fix#2132 

Remove LF clock initialization from os_init_clock.
pull/2196/merge
Sam Grove 2016-07-21 22:08:06 -05:00 committed by GitHub
parent db60d6a7f7 07d7165f98
commit e6d4b84197
1 changed files with 1 additions and 10 deletions
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11
hal/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/us_ticker.c
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@ -515,16 +515,7 @@ static void register_next_tick() {
*/
int os_tick_init (void)
{
NRF_CLOCK->LFCLKSRC = (CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos);
NRF_CLOCK->EVENTS_LFCLKSTARTED = 0;
NRF_CLOCK->TASKS_LFCLKSTART = 1;
while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0) {
// wait for the low frequency clock start
}
NRF_RTC1->PRESCALER = 0; /* for no pre-scaling. */
// their is no need to start the LF clock, it is already started by SystemInit.
NVIC_SetPriority(RTC1_IRQn, RTC1_IRQ_PRI);
NVIC_ClearPendingIRQ(RTC1_IRQn);
NVIC_EnableIRQ(RTC1_IRQn);