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Disable SAMD21 SysTick interrupt during sleep #84

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Disable SAMD21 SysTick interrupt during sleep #84

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42b760b
Disable SAMD21 SysTick interrupt during sleep
robdmob Feb 15, 2022
89695db
Merge branch 'arduino-libraries:master' into master
robdmob Jul 2, 2022
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4 changes: 4 additions & 0 deletions src/RTCZero.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -145,11 +145,15 @@ void RTCZero::detachInterrupt()

void RTCZero::standbyMode()
{
// Disable systick interrupt
SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
// Entering standby mode when connected
// via the native USB port causes issues.
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
__DSB();
__WFI();
// Enable systick interrupt
SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
}

/*
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