Correct frequency when error is more than configuration value only

loraprs_service.cpp

@@ -269,7 +269,7 @@ void Service::onLoraDataAvailable(int packetSize)
   serialSend(Cmd::Data, rxBuf, rxBufIndex);
   long frequencyError = LoRa.packetFrequencyError();
   
-  if (config_.EnableAutoFreqCorrection) {
+  if (config_.EnableAutoFreqCorrection && abs(frequencyError) > CfgFreqCorrMinHz) {
     config_.LoraFreq -= frequencyError;
     LoRa.setFrequency(config_.LoraFreq);
   }

loraprs_service.h

@@ -83,6 +83,7 @@ private:
   const int CfgPollDelayMs = 5;
   const int CfgWiFiConnRetryMaxTimes = 10;
   const int CfgMaxAX25PayloadSize = 512;
+  const int CfgFreqCorrMinHz = 150;
 
   // csma parameters, overriden with KISS commands
   const long CfgCsmaPersistence = 100;  // 255 for real time, lower for higher traffic