sascha/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2025-09-25 14:42:21 +01:00
Code Issues Releases Wiki Activity

[interval] Fix startup behaviour (#9793)

Browse Source
This commit is contained in:
Clyde Stubbs
2025-07-24 08:03:36 +10:00
committed by GitHub
parent 0744abe098
commit f9534fbd5d
3 changed files with 13 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
esphome/core/scheduler.cpp
View File

@@ -17,6 +17,8 @@ static const char *const TAG = "scheduler";
static const uint32_t MAX_LOGICALLY_DELETED_ITEMS = 10;
// Half the 32-bit range - used to detect rollovers vs normal time progression
static constexpr uint32_t HALF_MAX_UINT32 = std::numeric_limits<uint32_t>::max() / 2;
// max delay to start an interval sequence
static constexpr uint32_t MAX_INTERVAL_DELAY = 5000;
// Uncomment to debug scheduler
// #define ESPHOME_DEBUG_SCHEDULER
@@ -100,9 +102,11 @@ void HOT Scheduler::set_timer_common_(Component *component, SchedulerItem::Type
// Type-specific setup
if (type == SchedulerItem::INTERVAL) {
item->interval = delay;
// Calculate random offset (0 to interval/2)
uint32_t offset = (delay != 0) ? (random_uint32() % delay) / 2 : 0;
// first execution happens immediately after a random smallish offset
// Calculate random offset (0 to min(interval/2, 5s))
uint32_t offset = (uint32_t) (std::min(delay / 2, MAX_INTERVAL_DELAY) * random_float());
item->next_execution_ = now + offset;
ESP_LOGV(TAG, "Scheduler interval for %s is %" PRIu32 "ms, offset %" PRIu32 "ms", name_cstr, delay, offset);
} else {
item->interval = 0;
item->next_execution_ = now + delay;