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added complete validation logic for pins and types

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This commit is contained in:
PaoloTK 2024-09-04 13:28:43 +02:00
parent 8e4f8fcbc8
commit 329173e145
1 changed files with 18 additions and 3 deletions
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21
wled00/FX_fcn.cpp
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@ -69,6 +69,18 @@
#error "Max segments must be at least max number of busses!"
#endif
static constexpr unsigned sumPinsRequired(const unsigned* current, size_t count) {
return (count > 0) ? (Bus::getNumberOfPins(*current) + sumPinsRequired(current+1,count-1)) : 0;
}
static constexpr bool validatePinsAndTypes(const unsigned* types, unsigned numTypes, unsigned numPins ) {
// Pins provided < pins required -> always invalid
// Pins provided = pins required -> always valid
// Pins provided > pins required -> last type will repeat until we run out of pins, make sure excess pins modulo last type pins == 0
return (sumPinsRequired(types, numTypes) > numPins) ? false :
(numPins - sumPinsRequired(types, numTypes)) % Bus::getNumberOfPins(types[numTypes-1]) == 0;
}
///////////////////////////////////////////////////////////////////////////////
// Segment class implementation
@ -1222,9 +1234,9 @@ void WS2812FX::finalizeInit(void) {
constexpr unsigned defNumPins = ((sizeof defDataPins) / (sizeof defDataPins[0]));
constexpr unsigned defNumCounts = ((sizeof defCounts) / (sizeof defCounts[0]));
static_assert(Bus::getNumberOfPins(defDataTypes[0]) <= defNumPins,
"The first LED type configured requires more pins than have been defined!");
static_assert(validatePinsAndTypes(defDataTypes, defNumTypes, defNumPins),
"The default pin list defined in DATA_PINS does not match the pin requirements for the default buses defined in LED_TYPES");
unsigned prevLen = 0;
unsigned pinsIndex = 0;
for (unsigned i = 0; i < WLED_MAX_BUSSES+WLED_MIN_VIRTUAL_BUSSES; i++) {
@ -1232,7 +1244,9 @@ void WS2812FX::finalizeInit(void) {
// if we have less types than requested outputs and they do not align, use last known type to set current type
unsigned dataType = defDataTypes[(i < defNumTypes) ? i : defNumTypes -1];
unsigned busPins = Bus::getNumberOfPins(dataType);
// check if we have enough pins left to configure an output of this type
// should never happen due to static assert above
if (pinsIndex + busPins > defNumPins) {
DEBUG_PRINTLN(F("LED outputs misaligned with defined pins. Some pins will remain unused."));
break;
@ -1245,6 +1259,7 @@ void WS2812FX::finalizeInit(void) {
// i.e. DEBUG (GPIO1), DMX (2), SPI RAM/FLASH (16&17 on ESP32-WROVER/PICO), read/only pins, etc.
if (pinManager.isPinAllocated(defPin[j]) || pinManager.isReadOnlyPin(defPin[j])) {
defPin[j] = 1; // start with GPIO1 and work upwards
// @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
while ((pinManager.isPinAllocated(defPin[j]) || pinManager.isReadOnlyPin(defPin[j])) && defPin[j] < WLED_NUM_PINS) defPin[j]++;
}
}