[SX126x] Generalize IRQ checks

src/modules/SX126x/SX126x.cpp

@@ -1466,10 +1466,35 @@ int16_t SX126x::irqRxDoneRxTimeout(uint32_t &irqFlags, uint32_t &irqMask) {
   return(RADIOLIB_ERR_NONE);
 }
 
-bool SX126x::isRxTimeout() {
-  uint16_t irq = getIrqStatus();
-  bool rxTimedOut = irq & RADIOLIB_SX126X_IRQ_TIMEOUT;
-  return(rxTimedOut);
+bool SX126x::isIrqSet(uint8_t irq) {
+  uint16_t flags = getIrqStatus();
+  switch(irq) {
+    case RADIOLIB_IRQ_TX_DONE:
+      return(flags & RADIOLIB_SX126X_IRQ_TX_DONE);
+    case RADIOLIB_IRQ_RX_DONE:
+      return(flags & RADIOLIB_SX126X_IRQ_RX_DONE);
+    case RADIOLIB_IRQ_PREAMBLE_DETECTED:
+      return(flags & RADIOLIB_SX126X_IRQ_PREAMBLE_DETECTED);
+    case RADIOLIB_IRQ_SYNC_WORD_VALID:
+      return(flags & RADIOLIB_SX126X_IRQ_SYNC_WORD_VALID);
+    case RADIOLIB_IRQ_HEADER_VALID:
+      return(flags & RADIOLIB_SX126X_IRQ_HEADER_VALID);
+    case RADIOLIB_IRQ_HEADER_ERR:
+      return(flags & RADIOLIB_SX126X_IRQ_HEADER_ERR);
+    case RADIOLIB_IRQ_CRC_ERR:
+      return(flags & RADIOLIB_SX126X_IRQ_CRC_ERR);
+    case RADIOLIB_IRQ_CAD_DONE:
+      return(flags & RADIOLIB_SX126X_IRQ_CAD_DONE);
+    case RADIOLIB_IRQ_CAD_DETECTED:
+      return(flags & RADIOLIB_SX126X_IRQ_CAD_DETECTED);
+    case RADIOLIB_IRQ_TIMEOUT:
+      return(flags & RADIOLIB_SX126X_IRQ_TIMEOUT);
+    case RADIOLIB_IRQ_LR_FHSS_HOP:
+      return(flags & RADIOLIB_SX126X_IRQ_LR_FHSS_HOP);
+    default:
+      return(false);
+  }
+  return(false);
 }
 
 int16_t SX126x::implicitHeader(size_t len) {

src/modules/SX126x/SX126x.h

@@ -997,10 +997,10 @@ class SX126x: public PhysicalLayer {
     int16_t irqRxDoneRxTimeout(uint32_t &irqFlags, uint32_t &irqMask) override;
 
     /*!
-      \brief Check whether the IRQ bit for RxTimeout is set
-      \returns Whether RxTimeout IRQ is set
+      \brief Check whether a specific IRQ bit is set (e.g. RxTimeout, CadDone).
+      \returns Whether requested IRQ is set.
     */
-    bool isRxTimeout() override;
+    bool isIrqSet(uint8_t irq) override;
 
     /*!
       \brief Set implicit header mode for future reception/transmission.