Merge pull request #4312 from willmmiles/mixed-led-crash

Defer calling begin() on buses

Author: netmindz

wled00/FX_fcn.cpp

@@ -1286,14 +1286,9 @@ void WS2812FX::finalizeInit() {
     _isOffRefreshRequired |= bus->isOffRefreshRequired() && !bus->isPWM(); // use refresh bit for phase shift with analog
     unsigned busEnd = bus->getStart() + bus->getLength();
     if (busEnd > _length) _length = busEnd;
-    #ifdef ESP8266
-    // why do we need to reinitialise GPIO3???
-    //if (!bus->isDigital() || bus->is2Pin()) continue;
-    //uint8_t pins[5];
-    //if (!bus->getPins(pins)) continue;
-    //BusDigital* bd = static_cast<BusDigital*>(bus);
-    //if (pins[0] == 3) bd->reinit();
-    #endif
+
+    // This must be done after all buses have been created, as some kinds (parallel I2S) interact
+    bus->begin();
   }
 
   Segment::maxWidth  = _length;

wled00/bus_manager.cpp

@@ -410,7 +410,7 @@ std::vector<LEDType> BusDigital::getLEDTypes() {
   };
 }
 
-void BusDigital::reinit() {
+void BusDigital::begin() {
   if (!_valid) return;
   PolyBus::begin(_busPtr, _iType, _pins);
 }
@@ -910,7 +910,7 @@ void BusManager::on() {
       if (busses[i]->isDigital() && busses[i]->getPins(pins)) {
         if (pins[0] == LED_BUILTIN || pins[1] == LED_BUILTIN) {
           BusDigital *bus = static_cast<BusDigital*>(busses[i]);
-          bus->reinit();
+          bus->begin();
           break;
         }
       }

wled00/bus_manager.h

@@ -79,6 +79,7 @@ class Bus {
 
     virtual ~Bus() {} //throw the bus under the bus
 
+    virtual void     begin() {};
     virtual void     show() = 0;
     virtual bool     canShow() const                          { return true; }
     virtual void     setStatusPixel(uint32_t c)                {}
@@ -213,7 +214,7 @@ class BusDigital : public Bus {
     uint16_t getLEDCurrent() const override  { return _milliAmpsPerLed; }
     uint16_t getUsedCurrent() const override { return _milliAmpsTotal; }
     uint16_t getMaxCurrent() const override  { return _milliAmpsMax; }
-    void reinit();
+    void begin() override;
     void cleanup();
 
     static std::vector<LEDType> getLEDTypes();

wled00/bus_wrapper.h

@@ -597,7 +597,7 @@ class PolyBus {
       case I_HS_P98_3: busPtr = new B_HS_P98_3(len, pins[1], pins[0]); break;
       case I_SS_P98_3: busPtr = new B_SS_P98_3(len, pins[1], pins[0]); break;
     }
-    begin(busPtr, busType, pins, clock_kHz);
+
     return busPtr;
   }