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avoid infinite disconnect loops when RAM is low

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Frank
2024-02-23 10:54:50 +01:00
parent 7ae38649ad
commit 2cc67245ca
4 changed files with 32 additions and 11 deletions
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37
wled00/wled.cpp
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@@ -1205,6 +1205,7 @@ void WLED::handleConnection()
return;
}
static unsigned retryCount = 0; // WLEDMM
#ifdef ARDUINO_ARCH_ESP32
// reconnect WiFi to clear stale allocations if heap gets too low
if (now - heapTime > 5000) { // WLEDMM: updated with better logic for small heap available by block, not total.
@@ -1214,10 +1215,16 @@ void WLED::handleConnection()
uint32_t heap = heap_caps_get_largest_free_block(0x1800); // WLEDMM: This is a better metric for free heap.
#endif
if (heap < MIN_HEAP_SIZE && lastHeap < MIN_HEAP_SIZE) {
USER_PRINT(F("Heap too low! (step 2, force reconnect): "));
USER_PRINTLN(heap);
forceReconnect = true;
strip.purgeSegments(true); // remove all but one segments from memory
if (retryCount < 5) { // WLEDMM avoid repeated disconnects
USER_PRINT(F("Heap too low! (step 2, force reconnect): "));
USER_PRINTLN(heap);
forceReconnect = true;
strip.purgeSegments(true); // remove all but one segments from memory
// WLEDMM
errorFlag = ERR_LOW_MEM;
retryCount ++;
}
errorFlag = ERR_LOW_MEM;
} else if (heap < MIN_HEAP_SIZE) {
USER_PRINT(F("Heap too low! (step 1, flush unread UDP): "));
USER_PRINTLN(heap);
@@ -1226,7 +1233,10 @@ void WLED::handleConnection()
rgbUdp.flush();
notifier2Udp.flush();
ntpUdp.flush();
}
// WLEDMM
errorFlag = ERR_LOW_MEM;
retryCount = 1;
} else retryCount = 0; // WLEDMM memory OK - reset counter
lastHeap = heap;
heapTime = now;
}
@@ -1235,15 +1245,22 @@ void WLED::handleConnection()
if (now - heapTime > 5000) {
uint32_t heap = ESP.getFreeHeap();
if (heap < MIN_HEAP_SIZE && lastHeap < MIN_HEAP_SIZE) {
USER_PRINT(F("Heap too low! (step 2, force reconnect): "));
USER_PRINTLN(heap);
forceReconnect = true;
strip.purgeSegments(true); // remove all but one segments from memory
if (retryCount < 5) { // WLEDMM avoid repeated disconnects
USER_PRINT(F("Heap too low! (step 2, force reconnect): "));
USER_PRINTLN(heap);
forceReconnect = true;
strip.purgeSegments(true); // remove all but one segments from memory
// WLEDMM
errorFlag = ERR_LOW_MEM;
}
} else if (heap < MIN_HEAP_SIZE) {
USER_PRINT(F("Heap too low! (step 1, purge segments): "));
USER_PRINTLN(heap);
strip.purgeSegments();
}
// WLEDMM
errorFlag = ERR_LOW_MEM;
retryCount = 1;
} else retryCount = 0; // WLEDMM memory OK - reset counter
lastHeap = heap;
heapTime = now;
}