SpectrumDisplay.hpp

00001 //-------------------------------------------------------
00002 // Class for display spectrum
00003 // Copyright (c) 2015 MIKAMI, Naoki,  2015/10/26
00004 //-------------------------------------------------------
00005 
00006 #ifndef SPECTRUM_DISPLAY_HPP
00007 #define SPECTRUM_DISPLAY_HPP
00008 
00009 #include "LCD_DISCO_F746NG.h"
00010 
00011 namespace Mikami
00012 {
00013     class SpectrumDisplay
00014     {
00015     public:
00016         SpectrumDisplay(LCD_DISCO_F746NG &lcd,
00017                         int nFft, int x0, int y0,
00018                         float db1, int bin, float maxDb, int fs);
00019         void BarChart(float db[], uint32_t backColor);
00020         void LineChart(float db[], uint32_t backColor);
00021         void Clear(uint32_t backColor);
00022 
00023     private:
00024         const int N_FFT_;       // number of date for FFT
00025         const int X0_;          // Origin for x axis
00026         const int Y0_;          // Origin for y axis
00027         const float DB1_;       // Pixels for 1 dB
00028         const int BIN_;         // Pixels per bin
00029         const float MAX_DB_;    // Maximum dB
00030         const int FS_;          // Sampling frequency: 10 kHz
00031 
00032         LCD_DISCO_F746NG *const LCD_;
00033 
00034         void AxisX();       // x-axis
00035         void AxisY();       // y-axis
00036     };
00037 }
00038 #endif  // SPECTRUM_DISPLAY_HPP