From bcdc71c121e2a63fa92bb3751aa81714536689c9 Mon Sep 17 00:00:00 2001
From: sh123 <sh123@users.noreply.github.com>
Date: Tue, 21 Jun 2022 10:58:33 +0300
Subject: [PATCH] Added time on air logging

---
 loraprs_service.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/loraprs_service.cpp b/loraprs_service.cpp
index 25d0fb7..e36ebff 100644
--- a/loraprs_service.cpp
+++ b/loraprs_service.cpp
@@ -197,6 +197,7 @@ void Service::setupLora(long loraFreq, long bw, int sf, int cr, int pwr, int syn
 {
   isImplicitHeaderMode_ = !isExplicit;
   isImplicitHeaderMode_ = sf == 6;      // must be implicit for SF6
+  int loraSpeed = (int)(sf * (4.0 / cr) / (pow(2.0, sf) / bw));
         
   LOG_INFO("Initializing LoRa");
   LOG_INFO("Frequency:", loraFreq, "Hz");
@@ -207,7 +208,8 @@ void Service::setupLora(long loraFreq, long bw, int sf, int cr, int pwr, int syn
   LOG_INFO("Sync:", "0x" + String(sync, HEX));
   LOG_INFO("CRC:", crcBytes);
   LOG_INFO("Header:", isImplicitHeaderMode_ ? "implicit" : "explicit");
-  LOG_INFO("Speed:", (int)(sf * (4.0 / cr) / (pow(2.0, sf) / bw)), "bps");
+  LOG_INFO("Speed:", loraSpeed, "bps");
+  LOG_INFO("Time on air:", (double)loraSpeed / 37.0, "sec");
   float snrLimit = -7;
   switch (sf) {
     case 7: