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Update Ticker wrapper to handle early interrupts #8956

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Merged
merged 1 commit into from
Dec 5, 2018
Merged

Update Ticker wrapper to handle early interrupts #8956

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7 changes: 6 additions & 1 deletion hal/LowPowerTickerWrapper.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,12 @@ void LowPowerTickerWrapper::irq_handler(ticker_irq_handler_type handler)
{
core_util_critical_section_enter();

if (_pending_fire_now || _match_check(_intf->read()) || _suspended) {
// This code no longer filters out early interrupts. Instead it
// passes them through to the next layer and ignores further interrupts
// until the next call to set_interrrupt or fire_interrupt (when not suspended).
// This is to ensure that the device doesn't get stuck in sleep due to an
// early low power ticker interrupt that was ignored.
if (_pending_fire_now || _pending_match || _suspended) {
_timeout.detach();
_pending_timeout = false;
_pending_match = false;
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