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Stopwatch counts in real time from a start date, kept over a restart

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The stopwatch counted with millis(), so it started at 0 after every
restart and would overflow after 49 days. It now keeps the real start
time (UTC ms) and the time counted before a pause, stored in NVS
(system/stopwatch_store) on every change, so it keeps counting while
the display is off or restarting. Stop pauses, Start continues, and the
Stopwatch tab can set the start to a date and time (local, summer time
by mktime) to count from, e.g. days since an event. Start, stop and set
need the synced time.

New page formats: 12d 4:05:09 and 3w 2d.

Version 2.19.0, tested on the display over OTA (set start, future and
invalid dates refused, pause, restart).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
mangavalkandClaude Opus 5.5 committed 2026-10-20 22:22:32 +02:00
1 parent f5e77c7eca
commit 0166d0ee46
20 files changed
+278 -67
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src/esp32/logic/page.cpp
+15 -5
View File
@@ -778,13 +778,23 @@ static void formatCountdown(const PageElement &e, const LocalTime &t, char *out,
snprintf(out, size, "%s%s", e.text, value);
}
static void formatStopwatch(const PageElement &e, uint32_t ms, char *out, size_t size)
static void formatStopwatch(const PageElement &e, uint64_t ms, char *out, size_t size)
{
unsigned long s = ms / 1000, h = s / 3600, m = s % 3600 / 60, sec = s % 60;
unsigned long s = (unsigned long)(ms / 1000), h = s / 3600, m = s % 3600 / 60, sec = s % 60;
unsigned long days = h / 24;
char value[24];
if (e.format == STOPWATCH_H_MM)
if (e.format == STOPWATCH_W_D)
{
if (days >= 7)
snprintf(value, sizeof(value), "%luw %lud", days / 7, days % 7);
else
snprintf(value, sizeof(value), "%lud", days);
}
else if (e.format == STOPWATCH_D_H_MM_SS && days)
snprintf(value, sizeof(value), "%lud %lu:%02lu:%02lu", days, h % 24, m, sec);
else if (e.format == STOPWATCH_H_MM)
snprintf(value, sizeof(value), "%lu:%02lu", h, m);
else if (e.format == STOPWATCH_H_MM_SS || h)
else if (e.format == STOPWATCH_H_MM_SS || e.format == STOPWATCH_D_H_MM_SS || h)
snprintf(value, sizeof(value), "%lu:%02lu:%02lu", h, m, sec);
else
snprintf(value, sizeof(value), "%lu:%02lu", m, sec);
@@ -860,7 +870,7 @@ bool elementShowsSeconds(const PageElement &e, const LocalTime &t, bool stopwatc
case ElementType::Clock:
return e.format == CLOCK_HH_MM_SS || e.format == CLOCK_H_MM_SS;
case ElementType::Stopwatch:
return stopwatch_running && e.format != STOPWATCH_H_MM;
return stopwatch_running && e.format != STOPWATCH_H_MM && e.format != STOPWATCH_W_D;
case ElementType::Countdown:
{
int64_t left = secondsLeft(e, t);