From b29bcbbd4170416d937f0e299235b5c250063e4f Mon Sep 17 00:00:00 2001
From: Jm <jm@casler.org>
Date: Tue, 9 Feb 2021 21:59:00 -0800
Subject: [PATCH] #682 Exposing the actual radio center frequency to
 /static/report

---
 src/mesh/RadioInterface.cpp      | 41 ++++++++++++++++++++++++++++----
 src/mesh/RadioInterface.h        | 23 ++++++++++++++++++
 src/mesh/http/ContentHandler.cpp | 11 ++++++++-
 3 files changed, 70 insertions(+), 5 deletions(-)

diff --git a/src/mesh/RadioInterface.cpp b/src/mesh/RadioInterface.cpp
index b1aa807b..01f3f791 100644
--- a/src/mesh/RadioInterface.cpp
+++ b/src/mesh/RadioInterface.cpp
@@ -209,6 +209,38 @@ unsigned long hash(const char *str)
     return hash;
 }
 
+/**
+ * Save our frequency for later reuse.
+ */
+void RadioInterface::saveFreq(float freq)
+{
+    savedFreq = freq;
+}
+
+/**
+ * Save our channel for later reuse.
+ */
+void RadioInterface::saveChannelNum(uint32_t channel_num)
+{
+    savedChannelNum = channel_num;
+}
+
+/**
+ * Save our frequency for later reuse.
+ */
+float RadioInterface::getFreq()
+{
+    return savedFreq;
+}
+
+/**
+ * Save our channel for later reuse.
+ */
+uint32_t RadioInterface::getChannelNum()
+{
+    return savedChannelNum;
+}
+
 /**
  * Pull our channel settings etc... from protobufs to the dumb interface settings
  */
@@ -261,18 +293,19 @@ void RadioInterface::applyModemConfig()
     assert(myRegion); // Should have been found in init
 
     // If user has manually specified a channel num, then use that, otherwise generate one by hashing the name
-    int channel_num =
-        (channelSettings.channel_num ? channelSettings.channel_num - 1 : hash(channelName)) % myRegion->numChannels;
+    int channel_num = (channelSettings.channel_num ? channelSettings.channel_num - 1 : hash(channelName)) % myRegion->numChannels;
     freq = myRegion->freq + myRegion->spacing * channel_num;
 
-    DEBUG_MSG("Set radio: name=%s, config=%u, ch=%d, power=%d\n", channelName, channelSettings.modem_config, channel_num,
-              power);
+    DEBUG_MSG("Set radio: name=%s, config=%u, ch=%d, power=%d\n", channelName, channelSettings.modem_config, channel_num, power);
     DEBUG_MSG("Radio myRegion->freq: %f\n", myRegion->freq);
     DEBUG_MSG("Radio myRegion->spacing: %f\n", myRegion->spacing);
     DEBUG_MSG("Radio myRegion->numChannels: %d\n", myRegion->numChannels);
     DEBUG_MSG("Radio channel_num: %d\n", channel_num);
     DEBUG_MSG("Radio frequency: %f\n", freq);
     DEBUG_MSG("Short packet time: %u msec\n", shortPacketMsec);
+
+    saveChannelNum(channel_num);
+    saveFreq(freq);
 }
 
 /**
diff --git a/src/mesh/RadioInterface.h b/src/mesh/RadioInterface.h
index 0d8c7b9b..1f4fb845 100644
--- a/src/mesh/RadioInterface.h
+++ b/src/mesh/RadioInterface.h
@@ -133,9 +133,22 @@ class RadioInterface
     uint32_t getPacketTime(MeshPacket *p);
     uint32_t getPacketTime(uint32_t totalPacketLen);
 
+    /**
+     * Get the channel we saved.
+     */
+    uint32_t getChannelNum();
+
+    /**
+     * Get the frequency we saved.
+     */
+    float getFreq();
+
   protected:
     int8_t power = 17; // Set by applyModemConfig()
 
+    float savedFreq;
+    uint32_t savedChannelNum;
+
     /***
      * given a packet set sendingPacket and decode the protobufs into radiobuf.  Returns # of bytes to send (including the
      * PacketHeader & payload).
@@ -157,6 +170,16 @@ class RadioInterface
      */
     virtual void applyModemConfig();
 
+    /**
+     * Save the frequency we selected for later reuse.
+     */
+    virtual void saveFreq(float savedFreq);
+
+    /**
+     * Save the chanel we selected for later reuse.
+     */
+    virtual void saveChannelNum(uint32_t savedChannelNum);
+
   private:
     /// Return 0 if sleep is okay
     int preflightSleepCb(void *unused = NULL) { return canSleep() ? 0 : 1; }
diff --git a/src/mesh/http/ContentHandler.cpp b/src/mesh/http/ContentHandler.cpp
index 5f79702f..8535dd34 100644
--- a/src/mesh/http/ContentHandler.cpp
+++ b/src/mesh/http/ContentHandler.cpp
@@ -11,6 +11,7 @@
 #include <HTTPMultipartBodyParser.hpp>
 #include <HTTPURLEncodedBodyParser.hpp>
 #include <SPIFFS.h>
+#include "RadioLibInterface.h"
 
 #ifndef NO_ESP32
 #include "esp_task_wdt.h"
@@ -928,10 +929,18 @@ void handleReport(HTTPRequest *req, HTTPResponse *res)
     res->printf("\"has_battery\": %s,\n", BoolToString(powerStatus->getHasBattery()));
     res->printf("\"has_usb\": %s,\n", BoolToString(powerStatus->getHasUSB()));
     res->printf("\"is_charging\": %s\n", BoolToString(powerStatus->getIsCharging()));
-    res->println("}");
+    res->println("},");
+
+    res->println("\"radio\": {");
+    res->printf("\"frequecy\": %f,\n", RadioLibInterface::instance->getFreq());
+    res->printf("\"lora_channel\": %d\n", RadioLibInterface::instance->getChannelNum());
+    res->println("},");
+
 
     res->println("},");
 
+
+
     res->println("\"status\": \"ok\"");
     res->println("}");
 }