twotalesanimation
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/*
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* VFX Review — ESP32 dot-matrix dashboard
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*
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* Hardware : ESP32 dev board + 4× MAX7219 8×8 modules chained (8×32 display)
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* Libraries (install via Arduino Library Manager):
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* - MD_Parola by majicDesigns (≥3.7)
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* - MD_MAX72XX by majicDesigns (≥3.5)
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* - ArduinoJson by Benoit Blanchon (≥7)
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*
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* Behaviour:
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* Normal → scrolls "APR:142 CHG:12 TODO:38" on a loop
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* Event → interrupts with e.g. "OK SH0010" / "REVISE SH0010" / "NOTE SH0010"
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* held for NOTIFY_HOLD_MS then resumes stats scroll
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*/
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#include <Arduino.h>
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#include <WiFi.h>
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#include <HTTPClient.h>
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#include <ArduinoJson.h>
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#include <Preferences.h>
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#include <MD_Parola.h>
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#include <MD_MAX72xx.h>
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#include <SPI.h>
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#include "config.h"
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// ── Display setup ─────────────────────────────────────────────────────────────
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#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
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MD_Parola display(HARDWARE_TYPE, CS_PIN, NUM_DEVICES);
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// ── State ─────────────────────────────────────────────────────────────────────
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Preferences prefs;
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int approvedCount = 0;
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int changesCount = 0;
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int todoCount = 0;
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int lastEventId = 0;
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bool notifyActive = false;
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uint32_t notifyUntil = 0;
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char statsMsg[64]; // "APR:142 CHG:12 TODO:38"
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char notifyMsg[64]; // interrupt message
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uint32_t lastStatsFetch = 0;
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uint32_t lastEventsFetch = 0;
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// ── Helpers ───────────────────────────────────────────────────────────────────
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void buildStatsMsg() {
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snprintf(statsMsg, sizeof(statsMsg),
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"APR:%d CHG:%d TODO:%d",
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approvedCount, changesCount, todoCount);
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}
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// Truncate a string to maxLen chars, safe for display
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void truncate(const char* src, char* dst, int maxLen) {
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strncpy(dst, src, maxLen);
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dst[maxLen] = '\0';
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}
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void connectWiFi() {
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Serial.printf("[WiFi] Connecting to %s", WIFI_SSID);
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WiFi.mode(WIFI_STA);
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WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print('.');
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}
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Serial.printf("\n[WiFi] Connected — IP: %s\n", WiFi.localIP().toString().c_str());
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}
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// Make an authenticated GET request; fills `out` with the response body.
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// Returns HTTP status code, or -1 on connection failure.
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int apiGet(const char* path, String& out) {
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if (WiFi.status() != WL_CONNECTED) connectWiFi();
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char url[256];
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snprintf(url, sizeof(url), "http://%s:%d%s", SERVER_HOST, SERVER_PORT, path);
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HTTPClient http;
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http.begin(url);
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http.addHeader("x-display-key", DISPLAY_API_KEY);
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http.setTimeout(8000);
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int code = http.GET();
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if (code > 0) out = http.getString();
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http.end();
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return code;
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}
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// ── Stats fetch ───────────────────────────────────────────────────────────────
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void fetchStats() {
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String body;
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int code = apiGet("/api/dashboard/stats", body);
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if (code != 200) {
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Serial.printf("[Stats] HTTP %d\n", code);
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return;
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}
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JsonDocument doc;
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if (deserializeJson(doc, body)) { Serial.println("[Stats] JSON parse error"); return; }
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approvedCount = doc["approved"] | approvedCount;
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changesCount = doc["changes"] | changesCount;
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todoCount = doc["todo"] | todoCount;
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buildStatsMsg();
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Serial.printf("[Stats] APR:%d CHG:%d TODO:%d\n", approvedCount, changesCount, todoCount);
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}
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// ── Events fetch ──────────────────────────────────────────────────────────────
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void fetchEvents() {
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char path[64];
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snprintf(path, sizeof(path), "/api/display/events?after=%d", lastEventId);
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String body;
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int code = apiGet(path, body);
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if (code != 200) {
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Serial.printf("[Events] HTTP %d\n", code);
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return;
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}
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JsonDocument doc;
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if (deserializeJson(doc, body)) { Serial.println("[Events] JSON parse error"); return; }
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JsonArray arr = doc.as<JsonArray>();
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if (arr.isNull() || arr.size() == 0) return;
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// Pick the most recent event to display, update lastEventId across all
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const char* bestType = nullptr;
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const char* bestShotCode = nullptr;
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const char* bestBy = nullptr;
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int newestId = lastEventId;
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for (JsonObject ev : arr) {
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int id = ev["id"] | 0;
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const char* t = ev["type"] | "";
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const char* s = ev["shotCode"] | "";
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const char* b = ev["by"] | "";
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if (id > newestId) {
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newestId = id;
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bestType = t;
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bestShotCode = s;
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bestBy = b;
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}
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}
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if (newestId > lastEventId) {
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lastEventId = newestId;
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prefs.putInt("lastEvtId", lastEventId);
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}
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if (!bestType || !bestShotCode) return;
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// Build notification message
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char shotBuf[16];
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truncate(bestShotCode, shotBuf, 12);
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if (strcmp(bestType, "APPROVED") == 0) {
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snprintf(notifyMsg, sizeof(notifyMsg), "OK: %s", shotBuf);
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} else if (strcmp(bestType, "CHANGES") == 0) {
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snprintf(notifyMsg, sizeof(notifyMsg), "REVISE: %s", shotBuf);
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} else if (strcmp(bestType, "REJECTED") == 0) {
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snprintf(notifyMsg, sizeof(notifyMsg), "REJECT: %s", shotBuf);
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} else if (strcmp(bestType, "COMMENT") == 0) {
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char byBuf[10];
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truncate(bestBy, byBuf, 8);
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snprintf(notifyMsg, sizeof(notifyMsg), "NOTE: %s", shotBuf);
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} else {
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snprintf(notifyMsg, sizeof(notifyMsg), "%s", shotBuf);
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}
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Serial.printf("[Events] id=%d type=%s shot=%s\n", newestId, bestType, bestShotCode);
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notifyActive = true;
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notifyUntil = millis() + NOTIFY_HOLD_MS;
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display.displayClear();
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display.displayText(notifyMsg, PA_CENTER, SCROLL_SPEED, 500, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
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}
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// ── Arduino setup ─────────────────────────────────────────────────────────────
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void setup() {
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Serial.begin(115200);
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delay(500);
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// Restore last seen event ID from NVS so we don't replay old events on reboot
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prefs.begin("vfxdisp", false);
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lastEventId = prefs.getInt("lastEvtId", 0);
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Serial.printf("[Init] lastEventId restored = %d\n", lastEventId);
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// Display init
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display.begin();
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display.setIntensity(BRIGHTNESS);
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display.displayClear();
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display.setTextAlignment(PA_LEFT);
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display.setScrollSpacing(4);
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// Show connecting message
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display.displayText("Connecting...", PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
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while (!display.displayAnimate()) {}
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connectWiFi();
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// Initial data fetch
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fetchStats();
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// Prime the events endpoint — catch up to current without showing stale events
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// We do a silent fetch just to advance lastEventId to now
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{
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char path[64];
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snprintf(path, sizeof(path), "/api/display/events?after=%d", lastEventId);
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String body;
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int code = apiGet(path, body);
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if (code == 200) {
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JsonDocument doc;
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if (!deserializeJson(doc, body)) {
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JsonArray arr = doc.as<JsonArray>();
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for (JsonObject ev : arr) {
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int id = ev["id"] | 0;
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if (id > lastEventId) lastEventId = id;
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}
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prefs.putInt("lastEvtId", lastEventId);
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}
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}
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}
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// Kick off the scrolling stats message
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buildStatsMsg();
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display.displayClear();
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display.displayText(statsMsg, PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
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lastStatsFetch = millis();
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lastEventsFetch = millis();
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}
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// ── Arduino loop ──────────────────────────────────────────────────────────────
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void loop() {
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uint32_t now = millis();
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// ── Timed fetches ──
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if (now - lastStatsFetch >= STATS_INTERVAL_MS) {
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lastStatsFetch = now;
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fetchStats();
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// If no notification is active, refresh the scrolling text immediately
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if (!notifyActive) {
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display.displayClear();
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display.displayText(statsMsg, PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
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}
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}
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if (now - lastEventsFetch >= EVENTS_INTERVAL_MS) {
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lastEventsFetch = now;
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if (!notifyActive) fetchEvents(); // don't overlap notifications
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}
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// ── Notification expiry ──
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if (notifyActive && now >= notifyUntil) {
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notifyActive = false;
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display.displayClear();
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display.displayText(statsMsg, PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
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}
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// ── Animate display ──
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// When a scroll finishes, restart it (loops the message)
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if (display.displayAnimate()) {
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display.displayReset();
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}
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}
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Reference in New Issue
Block a user