不韋 呂 / Mbed 2 deprecated F746_RealtimeSpectrumAnalyzer

Realtime spectrum analyzer. Using FFT, linear prediction, or cepstrum smoothing. Version using MEMS microphone and CODEC, named "F746_RealtimeSpectrumAnalyzer_MEMS_Mic" is registered. リアルタイム スペクトル解析器．解析の手法：FFT，線形予測法，ケプストラムによる平滑化の３種類．このプログラムの説明は，CQ出版社のインターフェース誌，2016年4月号に掲載．外付けのマイクまたは他の信号源等を A0 に接続する．線形予測法，ケプストラムは，スペクトル解析の対象を音声信号に想定してパラメータを設定している．MEMS マイクと CODEC を使ったバージョンを "F746_RealtimeSpectrumAnalyzer_MEMS_Mic" として登録．

Dependencies:   BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed

MyClasses/WaveformDisplay.hpp@18:6630d61aeb3c, 2016-02-22 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Feb 22 13:54:51 2016 +0000
Revision:
18:6630d61aeb3c
Parent:
4:99d4d5ea06a2 
19

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:5c237fdcba23 1 //-----------------------------------------------------------
MikamiUitOpen 0:5c237fdcba23 2 // Class for waveform display
MikamiUitOpen 0:5c237fdcba23 3 //
MikamiUitOpen 4:99d4d5ea06a2 4 // 2015/12/15, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:5c237fdcba23 5 //-----------------------------------------------------------
MikamiUitOpen 0:5c237fdcba23 6
MikamiUitOpen 0:5c237fdcba23 7 #ifndef F746_WAVEFORM_DISPLAY_HPP
MikamiUitOpen 0:5c237fdcba23 8 #define F746_WAVEFORM_DISPLAY_HPP
MikamiUitOpen 0:5c237fdcba23 9
MikamiUitOpen 0:5c237fdcba23 10 #include "mbed.h"
MikamiUitOpen 0:5c237fdcba23 11
MikamiUitOpen 0:5c237fdcba23 12 namespace Mikami
MikamiUitOpen 0:5c237fdcba23 13 {
MikamiUitOpen 0:5c237fdcba23 14 class WaveformDisplay
MikamiUitOpen 0:5c237fdcba23 15 {
MikamiUitOpen 0:5c237fdcba23 16 public:
MikamiUitOpen 0:5c237fdcba23 17 WaveformDisplay(LCD_DISCO_F746NG &lcd,
MikamiUitOpen 0:5c237fdcba23 18 uint16_t x0, uint16_t y0, int nData,
MikamiUitOpen 0:5c237fdcba23 19 uint16_t rShift,
MikamiUitOpen 0:5c237fdcba23 20 uint32_t axisColor, uint32_t lineColor,
MikamiUitOpen 0:5c237fdcba23 21 uint32_t backColor)
MikamiUitOpen 0:5c237fdcba23 22 : X0_(x0), Y0_(y0), N_DATA_(nData), R_SHIFT_(rShift),
MikamiUitOpen 0:5c237fdcba23 23 AXIS_COLOR_(axisColor), LINE_COLOR_(lineColor),
MikamiUitOpen 0:5c237fdcba23 24 BACK_COLOR_(backColor), lcd_(lcd) { Axis(); }
MikamiUitOpen 0:5c237fdcba23 25
MikamiUitOpen 0:5c237fdcba23 26 void Execute(const int16_t xn[])
MikamiUitOpen 0:5c237fdcba23 27 {
MikamiUitOpen 0:5c237fdcba23 28 Axis();
MikamiUitOpen 0:5c237fdcba23 29 lcd_.SetTextColor(LINE_COLOR_);
MikamiUitOpen 0:5c237fdcba23 30 uint16_t x1 = X0_;
MikamiUitOpen 0:5c237fdcba23 31 uint16_t y1 = Y0_ - (xn[0] >> R_SHIFT_);
MikamiUitOpen 0:5c237fdcba23 32 for (int n=1; n<N_DATA_; n++)
MikamiUitOpen 0:5c237fdcba23 33 {
MikamiUitOpen 0:5c237fdcba23 34 uint16_t x2 = X0_ + n;
MikamiUitOpen 0:5c237fdcba23 35 uint16_t y2 = Y0_ - (xn[n] >> R_SHIFT_);
MikamiUitOpen 0:5c237fdcba23 36 lcd_.DrawLine(x1, y1, x2, y2);
MikamiUitOpen 0:5c237fdcba23 37 x1 = x2;
MikamiUitOpen 0:5c237fdcba23 38 y1 = y2;
MikamiUitOpen 0:5c237fdcba23 39 }
MikamiUitOpen 0:5c237fdcba23 40 }
MikamiUitOpen 0:5c237fdcba23 41
MikamiUitOpen 0:5c237fdcba23 42 private:
MikamiUitOpen 0:5c237fdcba23 43 const uint16_t X0_;
MikamiUitOpen 0:5c237fdcba23 44 const uint16_t Y0_;
MikamiUitOpen 0:5c237fdcba23 45 const int N_DATA_;
MikamiUitOpen 0:5c237fdcba23 46 const uint16_t R_SHIFT_;
MikamiUitOpen 0:5c237fdcba23 47 const uint32_t AXIS_COLOR_;
MikamiUitOpen 0:5c237fdcba23 48 const uint32_t LINE_COLOR_;
MikamiUitOpen 0:5c237fdcba23 49 const uint32_t BACK_COLOR_;
MikamiUitOpen 0:5c237fdcba23 50
MikamiUitOpen 0:5c237fdcba23 51 LCD_DISCO_F746NG& lcd_;
MikamiUitOpen 0:5c237fdcba23 52
MikamiUitOpen 0:5c237fdcba23 53 void Axis()
MikamiUitOpen 0:5c237fdcba23 54 {
MikamiUitOpen 0:5c237fdcba23 55 lcd_.SetTextColor(BACK_COLOR_);
MikamiUitOpen 0:5c237fdcba23 56 lcd_.FillRect(X0_, Y0_-36, N_DATA_, 72);
MikamiUitOpen 0:5c237fdcba23 57
MikamiUitOpen 0:5c237fdcba23 58 lcd_.SetTextColor(AXIS_COLOR_);
MikamiUitOpen 0:5c237fdcba23 59 lcd_.DrawLine(X0_-5, Y0_, X0_+N_DATA_+5, Y0_);
MikamiUitOpen 0:5c237fdcba23 60 }
MikamiUitOpen 4:99d4d5ea06a2 61
MikamiUitOpen 4:99d4d5ea06a2 62 // disallow copy constructor and assignment operator
MikamiUitOpen 4:99d4d5ea06a2 63 WaveformDisplay(const WaveformDisplay& );
MikamiUitOpen 4:99d4d5ea06a2 64 WaveformDisplay& operator=(const WaveformDisplay& );
MikamiUitOpen 0:5c237fdcba23 65 };
MikamiUitOpen 0:5c237fdcba23 66 }
MikamiUitOpen 3:7c26b701f363 67 #endif // F746_WAVEFORM_DISPLAY_HPP