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nrf52: allow repeater to sleep when idle

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taco 2026-02-01 14:46:55 +11:00
parent 699d1cd0b6
commit a342ab8437
3 changed files with 33 additions and 3 deletions
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26
src/helpers/NRF52Board.cpp
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@ -251,6 +251,32 @@ void NRF52BoardDCDC::begin() {
}
}
void NRF52Board::sleep(uint32_t secs) {
// Clear FPU interrupt flags to avoid insomnia
// see errata 87 for details https://docs.nordicsemi.com/bundle/errata_nRF52840_Rev3/page/ERR/nRF52840/Rev3/latest/anomaly_840_87.html
#if (__FPU_USED == 1)
__set_FPSCR(__get_FPSCR() & ~(0x0000009F));
(void) __get_FPSCR();
NVIC_ClearPendingIRQ(FPU_IRQn);
#endif
// On nRF52, we use event-driven sleep instead of timed sleep
// The 'secs' parameter is ignored - we wake on any interrupt
uint8_t sd_enabled = 0;
sd_softdevice_is_enabled(&sd_enabled);
if (sd_enabled) {
// first call processes pending softdevice events, second call sleeps.
sd_app_evt_wait();
sd_app_evt_wait();
} else {
// softdevice is disabled, use raw WFE
__SEV();
__WFE();
__WFE();
}
}
// Temperature from NRF52 MCU
float NRF52Board::getMCUTemperature() {
NRF_TEMP->TASKS_START = 1; // Start temperature measurement

1
src/helpers/NRF52Board.h
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@ -51,6 +51,7 @@ public:
virtual float getMCUTemperature() override;
virtual void reboot() override { NVIC_SystemReset(); }
virtual bool startOTAUpdate(const char *id, char reply[]) override;
virtual void sleep(uint32_t secs) override;
#ifdef NRF52_POWER_MANAGEMENT
bool isExternalPowered() override;