URL:
<https://savannah.nongnu.org/bugs/?59427>
Summary: Pending external interrupts can not be cleared
Project: Simulavr: an AVR simulator
Submitted by: None
Submitted on: Sat 07 Nov 2020 11:30:24 AM UTC
Category: Simulation
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Email: timol...@gmail.com
Open/Closed: Open
Discussion Lock: Any
Component Version: simulavr
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Details:
I observed that clearing pending external interrupts has no effect. For
instance, clearing the PCIE bit (by writing a 0 bit) inside of GIMSK or
clearing the PCIF bit (by writing a 1 bit) inside of GIFR, does not prevent
the interrupt handler to be run.
Looking at the simulavr source code it seems like a Problem inside of
libsim/externalirq.cpp in the function ExternalIRQHandler::set_from_reg. The
function does not call ClearIrqFlag which would be required to clear any
pending interrupts...
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