Merge pull request #4428 from McGiverGim/bf-osd_stats_only_when_enabled

Show stats only if enabled

src/main/io/osd.c

@@ -1015,8 +1015,25 @@ static void osdDisplayStatisticLabel(uint8_t y, const char * text, const char *
     displayWrite(osdDisplayPort, 22, y, value);
 }
 
+/*
+ * Test if there's some stat enabled
+ */
+static bool isSomeStatEnabled(void) {
+    for (int i = 0; i < OSD_STAT_COUNT; i++) {
+            if (osdConfig()->enabled_stats[i]) {
+                return true;
+            }
+        }
+    return false;
+}
+
 static void osdShowStats(void)
 {
+
+    if (!isSomeStatEnabled()) {
+        return;
+    }
+
     uint8_t top = 2;
     char buff[10];
 

src/test/unit/osd_unittest.cc

@@ -131,6 +131,18 @@ void doTestArm(bool testEmpty = true)
     }
 }
 
+/*
+ * Auxiliary function. Test is there're stats that must be shown
+ */
+bool isSomeStatEnabled(void) {
+    for (int i = 0; i < OSD_STAT_COUNT; i++) {
+            if (osdConfigMutable()->enabled_stats[i]) {
+                return true;
+            }
+        }
+    return false;
+}
+
 /*
  * Performs a test of the OSD actions on disarming.
  * (reused throughout the test suite)
@@ -147,10 +159,11 @@ void doTestDisarm()
 
     // then
     // post flight statistics displayed
+    if (isSomeStatEnabled()) {
         displayPortTestBufferSubstring(2, 2, "  --- STATS ---");
+    }
 }
 
-
 /*
  * Tests initialisation of the OSD and the power on splash screen.
  */