Skip to content

power_panic: Add settling delay to AC fault startup check #5254

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
boinger wants to merge 2 commits into
base: master
Choose a base branch
from
+6 −0
Open

power_panic: Add settling delay to AC fault startup check #5254

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
d8c009a
power_panic: Add settling delay to AC fault startup check
boinger Apr 16, 2026
ecf80f0
Merge branch 'master' into ac_fault_startup_debounce
boinger Sep 7, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions src/common/power_panic.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -925,6 +925,12 @@ void panic_loop() {
std::atomic<bool> ac_fault_enabled = false;

void check_ac_fault_at_startup() {
// Retry with settling delay: the AC power monitoring circuit
// may transiently assert fault during power-on. Genuine faults
// persist; transients clear within the retry window.
for (int i = 0; i < 5 && power_panic::is_ac_fault_active(); ++i) {
delay_ms(200);
}
if (power_panic::is_ac_fault_active()) {
fatal_error(ErrCode::ERR_ELECTRO_ACF_AT_INIT);
}
Expand Down