From bdbd851e294339a5d9641fe49aeb78d207d4ece7 Mon Sep 17 00:00:00 2001
From: Sjef Verhoeven PE5PVB <pe5pvb@het-bar.net>
Date: Wed, 6 Sep 2023 16:54:07 +0200
Subject: [PATCH] Reduced UDP traffic on WiFi

---
 TEF6686_ESP32.ino | 10 ++++++----
 src/rds.cpp       | 24 +++++++++++++-----------
 2 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/TEF6686_ESP32.ino b/TEF6686_ESP32.ino
index dfbb343..5cf7e3c 100644
--- a/TEF6686_ESP32.ino
+++ b/TEF6686_ESP32.ino
@@ -328,6 +328,7 @@ unsigned long rtplustickerhold;
 unsigned long rtticker;
 unsigned long rttickerhold;
 unsigned long tuningtimer;
+unsigned long udptimer;
 
 TEF6686 radio;
 TFT_eSprite sprite = TFT_eSprite(&tft);
@@ -2203,11 +2204,11 @@ void ShowFreq(int mode) {
   if (wifi) {
     Udp.beginPacket(remoteip, 9030);
     if (band == BAND_FM) {
-      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RcvLevel=" + String(SStatus / 10) + ";bandwidth=-1;freq=" + String(frequency) + "0000");
+      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";freq=" + String(frequency) + "0000");
     } else if (band == BAND_OIRT) {
-      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RcvLevel=" + String(SStatus / 10) + ";bandwidth=-1;freq=" + String(frequency_OIRT) + "0000");
+      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";freq=" + String(frequency_OIRT) + "0000");
     } else {
-      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RcvLevel=" + String(SStatus / 10) + ";bandwidth=-1;freq=" + String(frequency_AM) + "000");
+      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";freq=" + String(frequency_AM) + "000");
     }
     Udp.endPacket();
   }
@@ -2274,7 +2275,8 @@ void ShowSignalLevel() {
       SStatusold = SStatusprint;
     }
   }
-  if (wifi) {
+  if (wifi && millis() >= udptimer + 2000) {
+    udptimer = millis();
     Udp.beginPacket(remoteip, 9030);
     Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RcvLevel=" + String(SStatus / 10));
     Udp.endPacket();
diff --git a/src/rds.cpp b/src/rds.cpp
index e685b44..699a3ef 100644
--- a/src/rds.cpp
+++ b/src/rds.cpp
@@ -287,11 +287,11 @@ void doAF() {
           Udp.print(String((radio.af[af_scan].frequency - 8750) / 10, HEX));
         }
       }
-      af_counterold = radio.af_counter;
 
       for (int i = 0; i < 25 - radio.af_counter; i++) Udp.print("00");
       Udp.endPacket();
     }
+    af_counterold = radio.af_counter;
   }
 }
 
@@ -772,17 +772,19 @@ void showRadioText() {
   }
 
   if (wifi) {
-    Udp.beginPacket(remoteip, 9030);
-    Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RT1=");
-    char RThex[65];
-    radio.rds.stationText.toCharArray(RThex, 65);
-    for (int i = 0; i < 64; i++)
-    {
-      if (RThex[i] < 0x10) Udp.print("0");
-      if (RThex[i] == ' ') RThex[i] =  '_';
-      Udp.print(String(RThex[i], HEX));
+    if (RTold != (radio.rds.stationText + " " + radio.rds.stationText32)) {
+      Udp.beginPacket(remoteip, 9030);
+      Udp.print("from=TEF_tuner " + String(stationlistid, DEC) + ";RT1=");
+      char RThex[65];
+      radio.rds.stationText.toCharArray(RThex, 65);
+      for (int i = 0; i < 64; i++)
+      {
+        if (RThex[i] < 0x10) Udp.print("0");
+        if (RThex[i] == ' ') RThex[i] =  '_';
+        Udp.print(String(RThex[i], HEX));
+      }
+      Udp.endPacket();
     }
-    Udp.endPacket();
   }
   RTold = radio.rds.stationText + " " + radio.rds.stationText32;
 }