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Bugfix in ledmap generation #5073

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Merged
merged 1 commit into from
Nov 15, 2025
Merged

Bugfix in ledmap generation #5073

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7 changes: 4 additions & 3 deletions wled00/FX_fcn.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1997,6 +1997,7 @@ bool WS2812FX::deserializeMap(unsigned n) {
Segment::maxWidth = min(max(root[F("width")].as<int>(), 1), 255);
Segment::maxHeight = min(max(root[F("height")].as<int>(), 1), 255);
isMatrix = true;
DEBUG_PRINTF_P(PSTR("LED map width=%d, height=%d\n"), Segment::maxWidth, Segment::maxHeight);
}

d_free(customMappingTable);
Expand All @@ -2020,9 +2021,9 @@ bool WS2812FX::deserializeMap(unsigned n) {
} while (i < 32);
if (!foundDigit) break;
int index = atoi(number);
if (index < 0 || index > 16384) index = 0xFFFF;
if (index < 0 || index > 65535) index = 0xFFFF; // prevent integer wrap around
customMappingTable[customMappingSize++] = index;
if (customMappingSize > getLengthTotal()) break;
if (customMappingSize >= getLengthTotal()) break;
} else break; // there was nothing to read, stop
}
currentLedmap = n;
Expand All @@ -2032,7 +2033,7 @@ bool WS2812FX::deserializeMap(unsigned n) {
DEBUG_PRINT(F("Loaded ledmap:"));
for (unsigned i=0; i<customMappingSize; i++) {
if (!(i%Segment::maxWidth)) DEBUG_PRINTLN();
DEBUG_PRINTF_P(PSTR("%4d,"), customMappingTable[i]);
DEBUG_PRINTF_P(PSTR("%4d,"), customMappingTable[i] < 0xFFFFU ? customMappingTable[i] : -1);
}
DEBUG_PRINTLN();
#endif
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