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added complete validation logic for pins and types
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@ -69,6 +69,18 @@
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#error "Max segments must be at least max number of busses!"
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#endif
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static constexpr unsigned sumPinsRequired(const unsigned* current, size_t count) {
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return (count > 0) ? (Bus::getNumberOfPins(*current) + sumPinsRequired(current+1,count-1)) : 0;
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}
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static constexpr bool validatePinsAndTypes(const unsigned* types, unsigned numTypes, unsigned numPins ) {
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// Pins provided < pins required -> always invalid
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// Pins provided = pins required -> always valid
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// Pins provided > pins required -> last type will repeat until we run out of pins, make sure excess pins modulo last type pins == 0
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return (sumPinsRequired(types, numTypes) > numPins) ? false :
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(numPins - sumPinsRequired(types, numTypes)) % Bus::getNumberOfPins(types[numTypes-1]) == 0;
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}
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///////////////////////////////////////////////////////////////////////////////
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// Segment class implementation
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@ -1222,9 +1234,9 @@ void WS2812FX::finalizeInit(void) {
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constexpr unsigned defNumPins = ((sizeof defDataPins) / (sizeof defDataPins[0]));
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constexpr unsigned defNumCounts = ((sizeof defCounts) / (sizeof defCounts[0]));
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static_assert(Bus::getNumberOfPins(defDataTypes[0]) <= defNumPins,
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"The first LED type configured requires more pins than have been defined!");
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static_assert(validatePinsAndTypes(defDataTypes, defNumTypes, defNumPins),
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"The default pin list defined in DATA_PINS does not match the pin requirements for the default buses defined in LED_TYPES");
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unsigned prevLen = 0;
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unsigned pinsIndex = 0;
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for (unsigned i = 0; i < WLED_MAX_BUSSES+WLED_MIN_VIRTUAL_BUSSES; i++) {
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@ -1232,7 +1244,9 @@ void WS2812FX::finalizeInit(void) {
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// if we have less types than requested outputs and they do not align, use last known type to set current type
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unsigned dataType = defDataTypes[(i < defNumTypes) ? i : defNumTypes -1];
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unsigned busPins = Bus::getNumberOfPins(dataType);
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// check if we have enough pins left to configure an output of this type
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// should never happen due to static assert above
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if (pinsIndex + busPins > defNumPins) {
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DEBUG_PRINTLN(F("LED outputs misaligned with defined pins. Some pins will remain unused."));
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break;
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@ -1245,6 +1259,7 @@ void WS2812FX::finalizeInit(void) {
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// i.e. DEBUG (GPIO1), DMX (2), SPI RAM/FLASH (16&17 on ESP32-WROVER/PICO), read/only pins, etc.
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if (pinManager.isPinAllocated(defPin[j]) || pinManager.isReadOnlyPin(defPin[j])) {
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defPin[j] = 1; // start with GPIO1 and work upwards
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// @FIX pins are allocated after the loop, so if we reassign to a pin that's already in the array for this output 2 fields will have the same pin
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while ((pinManager.isPinAllocated(defPin[j]) || pinManager.isReadOnlyPin(defPin[j])) && defPin[j] < WLED_NUM_PINS) defPin[j]++;
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}
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}
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