Remove redundant checks for power of 0 (#2934)

* Add comment explaining necessity for second 0 check

Thank you @GUVWAF

* Update RF95Interface.cpp

* Update STM32WLE5JCInterface.cpp

* Update SX126xInterface.cpp

* Update SX128xInterface.cpp

* remove whitespace...

* Update SX128xInterface.cpp

src/mesh/RF95Interface.cpp

@@ -37,9 +37,6 @@ bool RF95Interface::init()
 {
     RadioLibInterface::init();
 
-    if (power == 0)
-        power = POWER_DEFAULT;
-
     if (power > MAX_POWER) // This chip has lower power limits than some
         power = MAX_POWER;
 

src/mesh/RadioInterface.cpp

@@ -448,7 +448,9 @@ void RadioInterface::applyModemConfig()
         power = myRegion->powerLimit;
 
     if (power == 0)
-        power = 17; // Default to default power if we don't have a valid power
+        power = 17; // Default to this power level if we don't have a valid regional power limit (powerLimit of myRegion defaults
+                    // to 0, currently no region has an actual power limit of 0 [dBm] so we can assume regions which have this
+                    // variable set to 0 don't have a valid power limit)
 
     // Set final tx_power back onto config
     loraConfig.tx_power = (int8_t)power; // cppcheck-suppress assignmentAddressToInteger
@@ -546,4 +548,4 @@ size_t RadioInterface::beginSending(meshtastic_MeshPacket *p)
 
     sendingPacket = p;
     return p->encrypted.size + sizeof(PacketHeader);
-}
+}

src/mesh/STM32WLE5JCInterface.cpp

@@ -20,9 +20,6 @@ bool STM32WLE5JCInterface::init()
 
     lora.setRfSwitchTable(rfswitch_pins, rfswitch_table);
 
-    if (power == 0)
-        power = STM32WLx_MAX_POWER;
-
     if (power > STM32WLx_MAX_POWER) // This chip has lower power limits than some
         power = STM32WLx_MAX_POWER;
 

src/mesh/SX126xInterface.cpp

@@ -43,6 +43,7 @@ template <typename T> bool SX126xInterface<T>::init()
     bool useRegulatorLDO = false; // Seems to depend on the connection to pin 9/DCC_SW - if an inductor DCDC?
 
     RadioLibInterface::init();
+
     if (power > SX126X_MAX_POWER) // Clamp power to maximum defined level
         power = SX126X_MAX_POWER;
 

src/mesh/SX128xInterface.cpp

@@ -42,9 +42,6 @@ template <typename T> bool SX128xInterface<T>::init()
 
     RadioLibInterface::init();
 
-    if (power == 0)
-        power = SX128X_MAX_POWER;
-
     if (power > SX128X_MAX_POWER) // This chip has lower power limits than some
         power = SX128X_MAX_POWER;