Cleanup

RNode_Firmware.ino

@@ -443,7 +443,9 @@ void update_airtime() {
     }
     longterm_channel_util = (float)longterm_channel_util_sum/(float)AIRTIME_BINS;
 
+    #if MCU_VARIANT == MCU_ESP32
       update_csma_p();
+    #endif
     kiss_indicate_channel_stats();
   #endif
 }
@@ -1097,12 +1099,14 @@ void validate_status() {
   }
 }
 
+#if MCU_VARIANT == MCU_ESP32
   #define _e 2.71828183
   #define _S 10.0
   float csma_slope(float u) { return (pow(_e,_S*u-_S/2.0))/(pow(_e,_S*u-_S/2.0)+1.0); }
   void update_csma_p() {
       csma_p = (uint8_t)((1.0-(csma_p_min+(csma_p_max-csma_p_min)*csma_slope(airtime)))*255.0);
 }
+#endif
 
 void loop() {
   if (radio_online) {