diff options
Diffstat (limited to 'os/hal/ports/NRF5/NRF52832/hal_lld.c')
| -rw-r--r-- | os/hal/ports/NRF5/NRF52832/hal_lld.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/os/hal/ports/NRF5/NRF52832/hal_lld.c b/os/hal/ports/NRF5/NRF52832/hal_lld.c index 500de13..11307f8 100644 --- a/os/hal/ports/NRF5/NRF52832/hal_lld.c +++ b/os/hal/ports/NRF5/NRF52832/hal_lld.c @@ -55,24 +55,40 @@ */ void hal_lld_init(void) { - /* High frequency clock initialisation + /* High frequency clock initialization */ NRF_CLOCK->TASKS_HFCLKSTOP = 1; + #if !defined(NRF5_XTAL_VALUE) && (NRF5_XTAL_VALUE != 32000000) #error "A 32Mhz crystal is mandatory on nRF52 boards." #endif +#if (NRF5_HFCLK_SOURCE == NRF5_HFCLK_HFXO) + NRF_CLOCK->EVENTS_HFCLKSTARTED = 0; + NRF_CLOCK->TASKS_HFCLKSTART = 1; + while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0); +#endif - /* Low frequency clock initialisation - * Clock is only started if st driver requires it + /* Low frequency clock initialization */ +#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) +#if (NRF5_ST_USE_RTC0 || NRF5_ST_USE_RTC1) && \ + (NRF5_LFCLK_SOURCE == NRF5_LFCLK_RC) +#error "A NRF5_SYSTEM_TICKS_AS_RTC requires LFCLK clock to be started." +#endif +#endif + NRF_CLOCK->TASKS_LFCLKSTOP = 1; + +#if (NRF5_LFCLK_SOURCE != NRF5_LFCLK_RC) NRF_CLOCK->LFCLKSRC = NRF5_LFCLK_SOURCE; - -#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) && \ - (NRF5_SYSTEM_TICKS == NRF5_SYSTEM_TICKS_AS_RTC) + + NRF_CLOCK->EVENTS_LFCLKSTARTED = 0; NRF_CLOCK->TASKS_LFCLKSTART = 1; + while (NRF_CLOCK->EVENTS_LFCLKSTARTED == 0); #endif + + irqInit(); } /** |