From ef7d38e940ac1adbafc7c82b73c4a7fc19b9f227 Mon Sep 17 00:00:00 2001
From: Ricardo Guzman <richon2001@hotmail.com>
Date: Sun, 18 Oct 2026 17:00:24 -0300
Subject: [PATCH] is2 added for testing

---
 data/igate_conf.json    |  1 +
 data_embed/index.html   | 16 ++++++++++++++++
 data_embed/script.js    |  4 ++++
 include/configuration.h |  1 +
 src/aprs_is_utils.cpp   | 18 +++++++++++++++++-
 src/configuration.cpp   |  6 +++++-
 src/web_utils.cpp       |  1 +
 7 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/data/igate_conf.json b/data/igate_conf.json
index 8dbcb98..461c3a7 100644
--- a/data/igate_conf.json
+++ b/data/igate_conf.json
@@ -27,6 +27,7 @@
         "active": false,
         "messagesToRF": false,
         "objectsToRF": false,
+        "is2Metadata": false,
         "server": "rotate.aprs2.net",
         "passcode": "XYZVW",
         "port": 14580,
diff --git a/data_embed/index.html b/data_embed/index.html
index 1668665..41eb773 100644
--- a/data_embed/index.html
+++ b/data_embed/index.html
@@ -937,6 +937,22 @@ body{background:var(--msh-bg);color:var(--msh-text);font-family:"Inter",system-u
                                             >
                                         </div>
                                     </div>
+                                    <div class="col-6">
+                                        <div class="form-check form-switch">
+                                            <input
+                                                type="checkbox"
+                                                name="aprs_is.is2Metadata"
+                                                id="aprs_is.is2Metadata"
+                                                class="form-check-input"
+                                            />
+                                            <label
+                                                for="aprs_is.is2Metadata"
+                                                class="form-label"
+                                                >Send IS2 Metadata
+                                                (RSSI/SNR) to APRS-IS</label
+                                            >
+                                        </div>
+                                    </div>
                                     <div class="col-8">
                                         <label
                                             for="aprs_is.server"
diff --git a/data_embed/script.js b/data_embed/script.js
index 8445e5c..2da00de 100644
--- a/data_embed/script.js
+++ b/data_embed/script.js
@@ -103,6 +103,7 @@ function loadSettings(settings) {
     document.getElementById("aprs_is.active").checked                   = settings.aprs_is.active;
     document.getElementById("aprs_is.messagesToRF").checked             = settings.aprs_is.messagesToRF;
     document.getElementById("aprs_is.objectsToRF").checked              = settings.aprs_is.objectsToRF;
+    document.getElementById("aprs_is.is2Metadata").checked              = settings.aprs_is.is2Metadata;
     document.getElementById("aprs_is.server").value                     = settings.aprs_is.server;
     document.getElementById("aprs_is.port").value                       = settings.aprs_is.port;
     document.getElementById("aprs_is.filter").value                     = settings.aprs_is.filter;
@@ -110,6 +111,7 @@ function loadSettings(settings) {
     APRSISCheckbox.checked      = settings.aprs_is.active;
     APRSISGateMessages.disabled = !APRSISCheckbox.checked;
     APRSISGateObjects.disabled  = !APRSISCheckbox.checked;
+    APRSISMetadata.disabled     = !APRSISCheckbox.checked;
     APRSISServer.disabled       = !APRSISCheckbox.checked;
     APRSISPort.disabled         = !APRSISCheckbox.checked;
     APRSISPasscode.disabled     = !APRSISCheckbox.checked;
@@ -350,6 +352,7 @@ StatusCheckbox.addEventListener("change", function() {
 const APRSISCheckbox            = document.querySelector('input[name="aprs_is.active"]');
 const APRSISGateMessages        = document.querySelector('input[name="aprs_is.messagesToRF"]');
 const APRSISGateObjects         = document.querySelector('input[name="aprs_is.objectsToRF"]');
+const APRSISMetadata            = document.querySelector('input[name="aprs_is.is2Metadata"]');
 const APRSISServer              = document.querySelector('input[name="aprs_is.server"]');
 const APRSISPort                = document.querySelector('input[name="aprs_is.port"]');
 const APRSISPasscode            = document.querySelector('input[name="aprs_is.passcode"]');
@@ -357,6 +360,7 @@ const APRSISFilter              = document.querySelector('input[name="aprs_is.fi
 APRSISCheckbox.addEventListener("change", function() {
     APRSISGateMessages.disabled = !this.checked;
     APRSISGateObjects.disabled  = !this.checked;
+    APRSISMetadata.disabled     = !this.checked;
     APRSISServer.disabled       = !this.checked;
     APRSISPort.disabled         = !this.checked;
     APRSISPasscode.disabled     = !this.checked;
diff --git a/include/configuration.h b/include/configuration.h
index 1829c16..6276ac1 100644
--- a/include/configuration.h
+++ b/include/configuration.h
@@ -65,6 +65,7 @@ public:
     String  filter;
     bool    messagesToRF;
     bool    objectsToRF;
+    bool    is2Metadata;
 };
 
 class DIGI {
diff --git a/src/aprs_is_utils.cpp b/src/aprs_is_utils.cpp
index e43c654..2c4f790 100644
--- a/src/aprs_is_utils.cpp
+++ b/src/aprs_is_utils.cpp
@@ -152,6 +152,18 @@ namespace APRS_IS_Utils {
         return packetToUpload;
     }
 
+    String buildIS2Meta() {
+        static String fixedTail;                    // rx_modem + rx_bitrate + rx_frequency: RX config doesn't change at runtime
+        if (fixedTail == "") {
+            // LoRa bit rate = SF * (BW / 2^SF) * 4/CR   (CR = denominator: 5..8)
+            uint32_t bitrate = (uint32_t)(Config.loramodule.rxSpreadingFactor
+                               * ((float)Config.loramodule.rxSignalBandwidth / (1 << Config.loramodule.rxSpreadingFactor))
+                               * (4.0 / Config.loramodule.rxCodingRate4));
+            fixedTail = " rx_modem=2 rx_bitrate=" + String(bitrate) + " rx_frequency=" + String(Config.loramodule.rxFreq);
+        }
+        return "#is2-meta rx_rssi_dbm=" + String(lastAprsPacket.rssi) + " rx_snr_db=" + String(lastAprsPacket.snr, 1) + fixedTail;
+    }
+
     bool processReceivedLoRaMessage(const String& sender, const String& packet) {
         String receivedMessage;
         int leftCurlyBraceIndex = packet.indexOf("{");
@@ -202,7 +214,11 @@ namespace APRS_IS_Utils {
                             A7670_Utils::uploadToAPRSIS(aprsPacketToUpload);
                             stationBeacon = false;
                         #else
-                            upload(aprsPacketToUpload);
+                            if (Config.aprs_is.is2Metadata && aprsPacketToUpload != "") {
+                                upload(buildIS2Meta() + "\r\n" + aprsPacketToUpload);     // IS2PLAIN: meta line right before the packet, same write
+                            } else {
+                                upload(aprsPacketToUpload);
+                            }
                         #endif
                         Utils::println("(Uploaded to APRS-IS)");
                         displayShow(firstLine, secondLine, thirdLine, fourthLine, fifthLine, sixthLine, seventhLine, 0);
diff --git a/src/configuration.cpp b/src/configuration.cpp
index 020ae9b..a1f10fb 100644
--- a/src/configuration.cpp
+++ b/src/configuration.cpp
@@ -63,6 +63,7 @@ bool Configuration::writeFile() {
         data["aprs_is"]["filter"]                   = aprs_is.filter;
         data["aprs_is"]["messagesToRF"]             = aprs_is.messagesToRF;
         data["aprs_is"]["objectsToRF"]              = aprs_is.objectsToRF;
+        data["aprs_is"]["is2Metadata"]              = aprs_is.is2Metadata;
 
         data["beacon"]["comment"]                   = beacon.comment;
         data["beacon"]["rfCommentEveryXBeacons"]    = beacon.rfCommentEveryXBeacons;
@@ -238,7 +239,8 @@ bool Configuration::readFile() {
             data["aprs_is"]["port"].isNull() ||
             data["aprs_is"]["filter"].isNull() ||
             data["aprs_is"]["messagesToRF"].isNull() ||
-            data["aprs_is"]["objectsToRF"].isNull()) needsRewrite = true;
+            data["aprs_is"]["objectsToRF"].isNull() ||
+            data["aprs_is"]["is2Metadata"].isNull()) needsRewrite = true;
         aprs_is.active                  = data["aprs_is"]["active"] | false;
         aprs_is.passcode                = data["aprs_is"]["passcode"] | "XYZWV";
         aprs_is.server                  = data["aprs_is"]["server"] | "rotate.aprs2.net";
@@ -246,6 +248,7 @@ bool Configuration::readFile() {
         aprs_is.filter                  = data["aprs_is"]["filter"] | "m/10";
         aprs_is.messagesToRF            = data["aprs_is"]["messagesToRF"] | false;
         aprs_is.objectsToRF             = data["aprs_is"]["objectsToRF"] | false;
+        aprs_is.is2Metadata             = data["aprs_is"]["is2Metadata"] | false;
 
         if (data["beacon"]["latitude"].isNull() ||
             data["beacon"]["longitude"].isNull() ||
@@ -473,6 +476,7 @@ void Configuration::setDefaultValues() {
     aprs_is.filter                  = "m/10";
     aprs_is.messagesToRF            = false;
     aprs_is.objectsToRF             = false;
+    aprs_is.is2Metadata             = false;
 
     beacon.comment                  = "LoRa APRS";
     beacon.rfCommentEveryXBeacons   = 1;
diff --git a/src/web_utils.cpp b/src/web_utils.cpp
index c5c042a..fdd13fd 100644
--- a/src/web_utils.cpp
+++ b/src/web_utils.cpp
@@ -234,6 +234,7 @@ namespace WEB_Utils {
         if (Config.aprs_is.active) {
             Config.aprs_is.messagesToRF     = request->hasParam("aprs_is.messagesToRF", true);
             Config.aprs_is.objectsToRF      = request->hasParam("aprs_is.objectsToRF", true);
+            Config.aprs_is.is2Metadata      = request->hasParam("aprs_is.is2Metadata", true);
             Config.aprs_is.server           = getParamStringSafe("aprs_is.server", Config.aprs_is.server);
             Config.aprs_is.passcode         = getParamStringSafe("aprs_is.passcode", Config.aprs_is.passcode);
             Config.aprs_is.port             = getParamIntSafe("aprs_is.port", Config.aprs_is.port);