Level RSSIGraph tuning (#1556)

* Added whole graph RSSI min/avg/max/delta to RSSIGraph
* fix for min=0 values when modulation is changed
* literal number as a #define flag

firmware/application/apps/ui_level.cpp

@@ -142,31 +142,24 @@ LevelView::LevelView(NavigationView& nav)
 }
 
 void LevelView::on_statistics_update(const ChannelStatistics& statistics) {
-    static int last_max_db = -1000;
-    static int last_min_rssi = -1000;
-    static int last_avg_rssi = -1000;
-    static int last_max_rssi = -1000;
+    static int16_t last_max_db = -1000;
+    static int16_t last_min_rssi = -1000;
+    static int16_t last_avg_rssi = -1000;
+    static int16_t last_max_rssi = -1000;
 
     rssi_graph.add_values(rssi.get_min(), rssi.get_avg(), rssi.get_max(), statistics.max_db);
 
-    bool refresh_db = false;
-    bool refresh_rssi = false;
-
+    // refresh db
     if (last_max_db != statistics.max_db) {
-        refresh_db = true;
-    }
-    if (last_min_rssi != rssi.get_min() || last_avg_rssi != rssi.get_avg() || last_max_rssi != rssi.get_max()) {
-        refresh_rssi = true;
-    }
-    if (refresh_db) {
         last_max_db = statistics.max_db;
         freq_stats_db.set("Power: " + to_string_dec_int(statistics.max_db) + " db");
     }
-    if (refresh_rssi) {
-        last_min_rssi = rssi.get_min();
-        last_avg_rssi = rssi.get_avg();
-        last_max_rssi = rssi.get_max();
-        freq_stats_rssi.set("RSSI: " + to_string_dec_int(rssi.get_min()) + "/" + to_string_dec_int(rssi.get_avg()) + "/" + to_string_dec_int(rssi.get_max()) + ",dt: " + to_string_dec_int(rssi.get_delta()));
+    // refresh rssi
+    if (last_min_rssi != rssi_graph.get_graph_min() || last_avg_rssi != rssi_graph.get_graph_avg() || last_max_rssi != rssi_graph.get_graph_max()) {
+        last_min_rssi = rssi_graph.get_graph_min();
+        last_avg_rssi = rssi_graph.get_graph_avg();
+        last_max_rssi = rssi_graph.get_graph_max();
+        freq_stats_rssi.set("RSSI: " + to_string_dec_int(last_min_rssi) + "/" + to_string_dec_int(last_avg_rssi) + "/" + to_string_dec_int(last_max_rssi) + ",dt: " + to_string_dec_int(rssi_graph.get_graph_delta()));
     }
 } /* on_statistic_updates */
 

firmware/application/ui/ui_rssi.cpp

@@ -30,6 +30,10 @@
 #define max(a, b) ((a) > (b) ? (a) : (b))
 #define abs(x) ((x) > 0 ? (x) : -(x))
 
+// flag value for graph min
+// If it does not change, then all graph min values are is zero
+#define GRAPH_MIN_ALL_ZERO_FLAG 666
+
 namespace ui {
 
 RSSI::RSSI(
@@ -209,17 +213,48 @@ void RSSI::on_statistics_update(const RSSIStatistics& statistics) {
     set_dirty();
 }
 
+int16_t RSSIGraph::get_graph_min() {
+    return graph_min_;
+}
+
+int16_t RSSIGraph::get_graph_avg() {
+    return graph_avg_;
+}
+
+int16_t RSSIGraph::get_graph_max() {
+    return graph_max_;
+}
+
+int16_t RSSIGraph::get_graph_delta() {
+    return graph_max_ - graph_min_;
+}
+
 void RSSIGraph::paint(Painter& painter) {
     const auto r = screen_rect();
 
-    RSSIGraph_entry& prev_entry = graph_list[0];
-    int xpos = 0, prev_xpos = r.width();
+    if (graph_list.size() == 0)
+        return;
 
+    int xpos = 0, prev_xpos = r.width();
+    RSSIGraph_entry& prev_entry = graph_list[0];
+
+    graph_min_ = GRAPH_MIN_ALL_ZERO_FLAG;  // if it stays at that value the whole graphlist min are zero
+    graph_max_ = 0;
+    int avg_sum = 0;
     for (int n = 1; (unsigned)n <= graph_list.size(); n++) {
         xpos = (r.width() * (graph_list.size() - n)) / graph_list.size();
         int size = abs(xpos - prev_xpos);
         RSSIGraph_entry& entry = graph_list[n - 1];
 
+        // stats
+        if (entry.rssi_min != 0 && entry.rssi_min < graph_min_) {
+            graph_min_ = entry.rssi_min;
+        }
+        if (entry.rssi_max > graph_max_) {
+            graph_max_ = entry.rssi_max;
+        }
+        avg_sum += entry.rssi_avg;
+
         // black
         const Rect r0{r.right() - prev_xpos, r.top(), size, r.height()};
         painter.fill_rectangle(
@@ -293,6 +328,10 @@ void RSSIGraph::paint(Painter& painter) {
         prev_entry = entry;
         prev_xpos = xpos;
     }
+    graph_avg_ = (avg_sum / graph_list.size());
+    // hack to only set to 0 if all graphlist min values are 0
+    if (graph_min_ == GRAPH_MIN_ALL_ZERO_FLAG)
+        graph_min_ = 0;
 }
 
 /*void RSSIGraph::paintOld(Painter& painter) {

firmware/application/ui/ui_rssi.hpp

@@ -49,6 +49,7 @@ class RSSI : public Widget {
         : RSSI{{}, {}} {
     }
 
+    // get last used/received min/avg/max/delta
     int16_t get_min();
     int16_t get_avg();
     int16_t get_max();
@@ -113,8 +114,16 @@ class RSSIGraph : public Widget {
 
     void on_hide() override;
     void on_show() override;
+    // get whole graph_list min/avg/max/delta
+    int16_t get_graph_min();
+    int16_t get_graph_avg();
+    int16_t get_graph_max();
+    int16_t get_graph_delta();
 
    private:
+    int16_t graph_min_ = 0;
+    int16_t graph_avg_ = 0;
+    int16_t graph_max_ = 0;
     uint16_t nb_columns_before_hide = 16;
     uint16_t nb_columns = 16;
     RSSIGraphList graph_list{};