fixed compilation by just copying over the lr1110 files.

src/helpers/radiolib/CustomLR1121.h

@@ -36,4 +36,6 @@ class CustomLR1121 : public LR1121 {
       bool detected = ((irq & RADIOLIB_LR11X0_IRQ_SYNC_WORD_HEADER_VALID) || (irq & RADIOLIB_LR11X0_IRQ_PREAMBLE_DETECTED));
       return detected;
     }
+    uint8_t getSpreadingFactor() const { return spreadingFactor; }
+
 };

src/helpers/radiolib/CustomLR1121Wrapper.h

@@ -7,6 +7,15 @@
 class CustomLR1121Wrapper : public RadioLibWrapper {
 public:
   CustomLR1121Wrapper(CustomLR1121& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
+
+  void setParams(float freq, float bw, uint8_t sf, uint8_t cr) override {
+    ((CustomLR1121 *)_radio)->setFrequency(freq);
+    ((CustomLR1121 *)_radio)->setSpreadingFactor(sf);
+    ((CustomLR1121 *)_radio)->setBandwidth(bw);
+    ((CustomLR1121 *)_radio)->setCodingRate(cr);
+    updatePreamble(sf);
+  }
+
   void doResetAGC() override { lr11x0ResetAGC((LR11x0 *)_radio, ((CustomLR1121 *)_radio)->getFreqMHz()); }
   bool isReceivingPacket() override {
     return ((CustomLR1121 *)_radio)->isReceiving();
@@ -19,12 +28,14 @@ public:
 
   void onSendFinished() override {
     RadioLibWrapper::onSendFinished();
-    _radio->setPreambleLength(16); // overcomes weird issues with small and big pkts
+    _radio->setPreambleLength(preambleLengthForSF(getSpreadingFactor())); // overcomes weird issues with small and big pkts
   }
 
   float getLastRSSI() const override { return ((CustomLR1121 *)_radio)->getRSSI(); }
   float getLastSNR() const override { return ((CustomLR1121 *)_radio)->getSNR(); }
 
+  uint8_t getSpreadingFactor() const override { return ((CustomLR1121 *)_radio)->getSpreadingFactor(); }
+  
   void setRxBoostedGainMode(bool en) override {
     ((CustomLR1121 *)_radio)->setRxBoostedGainMode(en);
   }