SimRadio: clean-up and emulate collisions (#5487)

* Clean up SimRadio and don't let it use PKC

* Add collision emulation for SimRadio

* Add stats from SimRadio to LocalStats

* Make emulating collisions optional

src/platform/portduino/SimRadio.h

@@ -11,11 +11,6 @@ class SimRadio : public RadioInterface, protected concurrency::NotifiedWorkerThr
 {
     enum PendingISR { ISR_NONE = 0, ISR_RX, ISR_TX, TRANSMIT_DELAY_COMPLETED };
 
-    /**
-     * Debugging counts
-     */
-    uint32_t rxBad = 0, rxGood = 0, txGood = 0;
-
     MeshPacketQueue txQueue = MeshPacketQueue(MAX_TX_QUEUE);
 
   public:
@@ -47,9 +42,17 @@ class SimRadio : public RadioInterface, protected concurrency::NotifiedWorkerThr
 
     meshtastic_QueueStatus getQueueStatus() override;
 
+    // Convert Compressed_msg to normal msg and receive it
+    void unpackAndReceive(meshtastic_MeshPacket &p);
+
+    /**
+     * Debugging counts
+     */
+    uint32_t rxBad = 0, rxGood = 0, txGood = 0, txRelay = 0;
+
   protected:
     /// are _trying_ to receive a packet currently (note - we might just be waiting for one)
-    bool isReceiving = false;
+    bool isReceiving = true;
 
   private:
     void setTransmitDelay();
@@ -61,7 +64,7 @@ class SimRadio : public RadioInterface, protected concurrency::NotifiedWorkerThr
     void startTransmitTimerSNR(float snr);
 
     void handleTransmitInterrupt();
-    void handleReceiveInterrupt(meshtastic_MeshPacket *p);
+    void handleReceiveInterrupt();
 
     void onNotify(uint32_t notification);
 
@@ -73,6 +76,8 @@ class SimRadio : public RadioInterface, protected concurrency::NotifiedWorkerThr
 
     int16_t readData(uint8_t *str, size_t len);
 
+    meshtastic_MeshPacket *receivingPacket = nullptr; // The packet we are currently receiving
+
   protected:
     /** Could we send right now (i.e. either not actively receiving or transmitting)? */
     virtual bool canSendImmediately();