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Ayke van Laethem
31 lines
679 B
C
31 lines
679 B
C
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#include "hal/nrf_gpio.h"
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#include "hal/nrf_uart.h"
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#include "nrf.h"
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#include "runtime.h"
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#include "runtime_nrf.h"
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#include <string.h>
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static volatile bool rtc_wakeup;
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void rtc_sleep(uint32_t ticks) {
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NRF_RTC0->INTENSET = RTC_INTENSET_COMPARE0_Msk;
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rtc_wakeup = false;
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if (ticks == 1) {
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// Race condition (even in hardware) at ticks == 1.
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// TODO: fix this in a better way by detecting it, like the manual
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// describes.
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ticks = 2;
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}
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NRF_RTC0->CC[0] = (NRF_RTC0->COUNTER + ticks) & 0x00ffffff;
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while (!rtc_wakeup) {
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__WFI();
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}
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}
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void RTC0_IRQHandler() {
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NRF_RTC0->INTENCLR = RTC_INTENSET_COMPARE0_Msk;
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NRF_RTC0->EVENTS_COMPARE[0] = 0;
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rtc_wakeup = true;
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}
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