不韋 呂 / Mbed 2 deprecated F746_RealtimeSpectrumAnalyzer_MEMS_Mic

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Dependencies:   BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed

Diff: MyClasses_Functions/SpectrumDisplay.cpp

Revision:
1:ac0a67a0deec
Parent:
0:0e5131366580
Child:
4:2cdaad00d208
--- a/MyClasses_Functions/SpectrumDisplay.cpp	Wed Jan 06 12:46:15 2016 +0000
+++ b/MyClasses_Functions/SpectrumDisplay.cpp	Thu Jan 07 00:26:31 2016 +0000
@@ -1,7 +1,7 @@
 //-------------------------------------------------------
 //  Class for display spectrum
 //
-//  2015/12/11, Copyright (c) 2015 MIKAMI, Naoki
+//  2016/01/07, Copyright (c) 2015 MIKAMI, Naoki
 //-------------------------------------------------------
 
 #include "SpectrumDisplay.hpp"
@@ -10,11 +10,11 @@
 {
     SpectrumDisplay::SpectrumDisplay(
             LCD_DISCO_F746NG &lcd,
-            int nFft, int x0, int y0,
+            int nFft, int x0, int y0, float offset,
             float db1, int bin, float maxDb, int fs,
             uint32_t axisColor, uint32_t lineColor,
             uint32_t backColor)
-        : N_FFT_(nFft), X0_(x0), Y0_(y0),
+        : N_FFT_(nFft), X0_(x0), Y0_(y0), OFFSET_(offset),
           DB1_(db1), BIN_(bin), MAX_DB_(maxDb),
           FS_(fs), AXIS_COLOR_(axisColor),
           LINE_COLOR_(lineColor), BACK_COLOR_(backColor),
@@ -26,16 +26,15 @@
 
     void SpectrumDisplay::Draw(float db[])
     {
-        const float OFFSET = -50.0f;
         lcd_.SetTextColor(BACK_COLOR_);
         lcd_.FillRect(X0_+1, Y0_-(int)(MAX_DB_*DB1_),
                       N_FFT_*BIN_/2, MAX_DB_*DB1_);
 
-        float h = ((db[1] + OFFSET) > 0)? db[1] + OFFSET : 0;
+        float h = ((db[1] + OFFSET_) > 0)? db[1] + OFFSET_ : 0;
         int y1 = Y0_ - (int)(h*DB1_);
         for (int n=1; n<N_FFT_/2; n++)
         {
-            float h2 = ((db[n+1] + OFFSET) > 0)? db[n+1] + OFFSET : 0;
+            float h2 = ((db[n+1] + OFFSET_) > 0)? db[n+1] + OFFSET_ : 0;
             if (h2 > MAX_DB_) h2 = MAX_DB_;
             int y2 = Y0_ - (int)(h2*DB1_);
             lcd_.SetTextColor(LINE_COLOR_);
@@ -91,3 +90,4 @@
         DrawString(X0_-27, Y0_-(int)(DB1_*MAX_DB_)-18, "[dB]");
     }
 }
+