Xandrossian/homeassistant_espscreen
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Free memory on the CYD and drop the old manual profile (0.2.50)

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The CYD restarted under load: a slider fill rounded less than its track made
LVGL draw the fill into a buffer of its own size on every redraw (15-20 KB), and
when that allocation failed the refresh retried until the task watchdog fired.
Track and fill now share one radius, and tests/test_layer_free.py keeps every
layer-making style out of the profiles, the packages and the firmware headers.

A tile keeps only the fields every card uses; climate modes, select options,
weather, sun and timer times, the media title and the vacuum rows moved to an
Extra block that exists only while a state needs one, and the state copy became
a fingerprint. runtime_tiles::model went from 24,296 to 8,216 bytes.

The manual profile that bound tiles to fixed entities in the YAML is gone:
331 TILE* substitutions, DYNAMIC_TILES/TILE_COUNT/DIRECT_ACTIONS, the 80 Home
Assistant subscriptions, its tap handlers and scripts, its own vacuum card, its
guides and helper scripts, and the five stale header copies in the repository
root that two C++ tests were compiling instead of the components. esphome config
of both Easy profiles is unchanged by that cleanup.

tile_scroll and the wake overlay no longer light up on a tap, and the debug
sensor min_free reports the lowest free heap since boot. On the bench CYD static
RAM went from 32.0% to 22.8% and free heap from 64-77 KB to about 101 KB, with
78 KB as the lowest point over thirteen hours without a restart.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Max Gramser
2026-09-16 08:06:41 +02:00
parent 79a84a4c77
commit 08197c4ae1
45 changed files with 854 additions and 12896 deletions
Download Patch File Download Diff File Expand all files Collapse all files
components/smart_display/runtime_model.h
+77 -27
View File
@@ -1,6 +1,7 @@
#pragma once
#include <algorithm>
#include <array>
#include <memory>
#include <string>
#include <vector>
#include <cmath>
@@ -26,8 +27,20 @@ inline bool valid_entity(const std::string &entity) {
if (domain == allowed) return true;
return false;
}
inline std::string state_revision(const std::string &state, const std::string &attributes) {
return state + "\n" + attributes;
// A tile keeps a fingerprint (FNV-1a) of its last state message instead of a copy of it. It is also an
// ArduinoJson writer: the firmware hashes the attributes while serializing them, without a string.
struct Fingerprint {
uint32_t value = 2166136261u;
size_t write(uint8_t c) { value = (value ^ c) * 16777619u; return 1; }
size_t write(const uint8_t *data, size_t size) { for (size_t i = 0; i < size; ++i) write(data[i]); return size; }
void add(const std::string &text) { write(reinterpret_cast<const uint8_t *>(text.data()), text.size()); }
};
inline uint32_t state_revision(const std::string &state, const std::string &attributes) {
Fingerprint f;
f.add(state);
f.write('\n');
f.add(attributes);
return f.value;
}
struct Forecast { std::string day, condition; float high = NAN, low = NAN, rain = NAN, mm = NAN; };
struct Hour { std::string time, condition; float temp = NAN, rain = NAN, mm = NAN; };
@@ -41,59 +54,96 @@ struct Choice {
std::string entity, current, roles, sent;
std::vector<std::string> values, labels;
};
struct Tile {
std::string entity, name, state, unit, modes, hvac_modes, fan_modes, swing_modes, fan_mode, swing_mode;
std::array<std::string, 4> fan_speeds;
unsigned fan_speed_count = 0;
// What only some tiles carry: climate modes, a select's options, weather, sun and timer times, a media
// title, the vacuum rows. A light or a sensor has none of it, so a tile holds this block only while its
// state needs one: twenty tiles with these fields inline took 24 KB of the CYD's RAM, mostly empty.
struct Extra {
// Climate: the modes as JSON lists, the current fan and swing mode, and what it is doing now.
std::string hvac_modes, fan_modes, swing_modes, fan_mode, swing_mode, hvac_action;
// A select's options, at most eight.
std::vector<std::string> options;
// Weather: up to five days and eight hours.
std::vector<Forecast> forecast;
std::vector<Hour> hours;
float wind = NAN, feels = NAN;
std::string wind_unit;
std::string sunrise, sunset, duration, remaining;
uint32_t timer_end = 0;
std::string media_title;
// Vacuum: its own speeds (at most four) and speed, the mode, water and suction rows (see Choice), and
// from sensors of its device the room it is in and whether it charges.
std::vector<std::string> fan_speeds;
std::string fan_speed;
std::vector<Choice> choices;
std::string room;
bool charging = false;
Choice *choice(char kind) { for (auto &c : choices) if (c.kind == kind) return &c; return nullptr; }
bool empty() const {
return hvac_modes.empty() && fan_modes.empty() && swing_modes.empty() && fan_mode.empty() && swing_mode.empty() &&
hvac_action.empty() && options.empty() && forecast.empty() && hours.empty() && std::isnan(wind) &&
std::isnan(feels) && wind_unit.empty() && sunrise.empty() && sunset.empty() && duration.empty() &&
remaining.empty() && !timer_end && media_title.empty() && fan_speeds.empty() && fan_speed.empty() &&
choices.empty() && room.empty() && !charging;
}
};
// The Extra of a tile on the heap, copied along with the tile like an ordinary member.
struct ExtraBox {
std::unique_ptr<Extra> ptr;
ExtraBox() = default;
ExtraBox(const ExtraBox &other) : ptr(other.ptr ? new Extra(*other.ptr) : nullptr) {}
ExtraBox &operator=(const ExtraBox &other) { if (this != &other) ptr.reset(other.ptr ? new Extra(*other.ptr) : nullptr); return *this; }
ExtraBox(ExtraBox &&) noexcept = default;
ExtraBox &operator=(ExtraBox &&) noexcept = default;
};
struct Tile {
std::string entity, name, state, unit, modes;
float brightness = NAN, percentage = NAN, position = NAN;
float current = NAN, target = NAN, humidity = NAN, minimum = 7, maximum = 35, step = 0.5f;
int hue = 0, kelvin = 3000, min_kelvin = 0, max_kelvin = 0;
bool received = false;
bool has_hs_color = false;
int saturation = 0;
std::string tap = "auto", display = "standard", inline_control = "none", media_title;
std::string tap = "auto", display = "standard", inline_control = "none";
bool wide = false;
// Direct control set on a wide card (firmware 0.2.19+); empty keeps the plain card.
std::string controls, device_class, hvac_action;
std::string controls, device_class;
bool muted = false;
// A -/+ edit shows at once and is sent as one call after a short pause; the
// value stays until Home Assistant reports it (or a timeout clears it).
float edit_value = NAN; uint32_t edit_since = 0; bool edit_sent = false;
// Knob position a toggle shows while its command is under way.
bool optimistic_on = false;
std::array<std::string, 8> options;
unsigned option_count = 0, history_hours = 24;
std::array<float,24> history{};
// A sensor's graph: 24 samples over `history_hours`, empty without one.
unsigned history_hours = 24;
std::vector<float> history;
bool has_history = false;
// Weather only: up to five days and eight hours; empty vectors cost nothing on the other tiles.
std::vector<Forecast> forecast;
std::vector<Hour> hours;
float wind = NAN, feels = NAN;
std::string wind_unit;
// When a scene, script or button last ran (unix time), pre-computed by the manager.
uint32_t last_run = 0;
std::string sunrise, sunset, duration, remaining;
uint32_t timer_end = 0;
float battery = NAN, volume = NAN;
// Vacuum only: mode, water and suction rows (see Choice); an empty vector costs nothing elsewhere.
// `room` is where the robot is and `charging` whether it charges, both from sensors of its device.
std::vector<Choice> choices;
std::string room;
bool charging = false;
Choice *choice(char kind) { for (auto &c : choices) if (c.kind == kind) return &c; return nullptr; }
const Choice *choice(char kind) const { for (auto &c : choices) if (c.kind == kind) return &c; return nullptr; }
uint32_t supported = 0, background = 0;
bool transparent = false; // "Background: none": card fill and border hidden, contents unchanged.
std::string icon; // UTF-8 glyph of a chosen icon the icon fonts contain; empty keeps the domain icon.
std::string revision, pending_revision;
uint32_t revision = 0, pending_revision = 0; // state_revision() fingerprints
uint32_t pending_since = 0;
bool pending = false, confirmed = false, local_feedback = false;
ExtraBox extra_box;
const Extra &extra() const { static const Extra none; return extra_box.ptr ? *extra_box.ptr : none; }
Extra *extra_ptr() { return extra_box.ptr.get(); }
Extra &edit_extra() { if (!extra_box.ptr) extra_box.ptr.reset(new Extra()); return *extra_box.ptr; }
// A state message's extras replace the block: it stays allocated while the tile needs one and is freed
// when a state brings none.
void set_extra(Extra &&next) {
if (next.empty()) extra_box.ptr.reset();
else if (extra_box.ptr) *extra_box.ptr = std::move(next);
else extra_box.ptr.reset(new Extra(std::move(next)));
}
Choice *choice(char kind) { return extra_box.ptr ? extra_box.ptr->choice(kind) : nullptr; }
const Choice *choice(char kind) const { for (auto &c : extra().choices) if (c.kind == kind) return &c; return nullptr; }
bool is_switch() const { return domain()=="switch" || domain()=="input_boolean"; }
bool loading(uint32_t now) const { return pending && (now-pending_since < (is_switch()?150u:1000u) || (!confirmed && !local_feedback && now-pending_since < 6000)); }
bool awaiting_action(uint32_t now) const { return loading(now) && !local_feedback; }
void begin(uint32_t now, bool local=false) { pending=true; pending_since=now; confirmed=false; local_feedback=local; pending_revision=revision; }
void observe(const std::string &next) { revision=next; if (pending && revision!=pending_revision) confirmed=true; }
void observe(uint32_t next) { revision=next; if (pending && revision!=pending_revision) confirmed=true; }
std::string domain() const { return entity.substr(0, entity.find('.')); }
bool builtin() const { return domain() == "screen"; }
bool available() const { return builtin() || (received && state != "unknown" && state != "unavailable" && !state.empty()); }