Diff: LevelMeter.h

Revision:

2:25adc1277b3e

Child:

3:1666e2d5bd46

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LevelMeter.h	Fri Sep 04 16:50:36 2015 +0000
@@ -0,0 +1,41 @@
+//=============================================================================
+//  @author vaifreak
+//  @brief  LED level meter class
+//=============================================================================
+#pragma once
+
+//---------------------------------------------
+// 
+//---------------------------------------------
+class LevelMeter
+{
+public:
+    #define NB_LED 4
+    #define BRIGHTNESS 0.2f
+    
+    LevelMeter()
+    {
+        led[0] = new PwmOut(LED1);
+        led[1] = new PwmOut(LED2);
+        led[2] = new PwmOut(LED3);
+        led[3] = new PwmOut(LED4);
+    }
+
+    // level : [0.0~1.0]
+    void Update( float level )
+    {
+        for(int i=0; i<NB_LED; i++)
+        {
+            float val;
+            level = level - (float)i / (float)NB_LED;
+            val = level * (float)NB_LED;
+            if( val > 1.0f ) val = 1.0f;
+            else if( val < 0.0f ) val = 0.0f;
+            led[i]->write( val * BRIGHTNESS );
+        }
+    }
+
+private:
+    PwmOut* led[NB_LED];
+    
+};