[SX126x] Fixed wakeup sequence - NSS first, BUSY second (#69)

src/modules/SX126x.cpp

@@ -1297,6 +1297,9 @@ int16_t SX126x::SPItransfer(uint8_t* cmd, uint8_t cmdLen, bool write, uint8_t* d
     uint8_t debugBuff[256];
   #endif
 
+  // pull NSS low
+  digitalWrite(_mod->getCs(), LOW);
+
   // ensure BUSY is low (state meachine ready)
   RADIOLIB_VERBOSE_PRINTLN(F("Wait for BUSY ... "));
   uint32_t start = millis();
@@ -1307,7 +1310,6 @@ int16_t SX126x::SPItransfer(uint8_t* cmd, uint8_t cmdLen, bool write, uint8_t* d
   }
 
   // start transfer
-  digitalWrite(_mod->getCs(), LOW);
   spi->beginTransaction(spiSettings);
 
   // send command byte(s)