Fix meters example

Bodmer · Aug 11, 2022 · 63146c9 · 63146c9
1 parent 285a7f4
commit 63146c9
Show file tree

Hide file tree

Showing 3 changed files with 10 additions and 5 deletions.
diff --git a/examples/Meters/Analogue_meters/Analogue_meters.ino b/examples/Meters/Analogue_meters/Analogue_meters.ino
@@ -65,18 +65,23 @@ void loop()
     float value = 50.0 + 50.0 * sin((d + 0) * 0.0174532925);
 
     float current;
-    mapValue(value, current, (float)0.0, (float)100.0, (float)0.0, (float)2.0);
+    current = mapValue(value, (float)0.0, (float)100.0, (float)0.0, (float)2.0);
     //Serial.print("I = "); Serial.print(current);
     amps.updateNeedle(current, 0);
 
     float voltage;
-    mapValue(value, voltage, (float)0.0, (float)100.0, (float)0.0, (float)10.0);
+    voltage = mapValue(value, (float)0.0, (float)100.0, (float)0.0, (float)10.0);
     //Serial.print(", V = "); Serial.println(voltage);
     volts.updateNeedle(voltage, 0);
 
     float resistance;
-    mapValue(value, resistance, (float)0.0, (float)100.0, (float)0.0, (float)100.0);
+    resistance = mapValue(value, (float)0.0, (float)100.0, (float)0.0, (float)100.0);
     //Serial.print(", R = "); Serial.println(resistance);
     ohms.updateNeedle(resistance, 0);
   }
 }
+
+float mapValue(float ip, float ipmin, float ipmax, float tomin, float tomax)
+{
+  return tomin + (((tomax - tomin) * (ip - ipmin))/ (ipmax - ipmin));
+}
diff --git a/library.json b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "TFT_eWidget",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "keywords": "Arduino, tft, display, button, gui, graph, meter, slider",
   "description": "A TFT GUI widget library",
   "repository":

diff --git a/library.properties b/library.properties
@@ -1,5 +1,5 @@
 name=TFT_eWidget
-version=0.0.3
+version=0.0.4
 author=Bodmer
 maintainer=Bodmer
 sentence=A TFT GUI widget library