スペクトログラム このプログラムの説明は,CQ出版社「トランジスタ技術」の2021年10月号から開始された連載記事「STM32マイコンではじめるPC計測」の中にあります.このプログラムといっしょに使うPC側のプログラムについても同誌を参照してください.
Dependencies: Array_Matrix mbed SerialTxRxIntr DSP_ADDA UIT_FFT_Real Window
XferSpectrum.hpp@0:3bf11d2ab6ad, 2021-09-09 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Thu Sep 09 08:55:42 2021 +0000
- Revision:
- 0:3bf11d2ab6ad
1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MikamiUitOpen | 0:3bf11d2ab6ad | 1 | //--------------------------------------------------------------------- |
MikamiUitOpen | 0:3bf11d2ab6ad | 2 | // スペクトル解析の結果を PC へ転送するための XferBase の派生クラス |
MikamiUitOpen | 0:3bf11d2ab6ad | 3 | // |
MikamiUitOpen | 0:3bf11d2ab6ad | 4 | // 2021/07/11, Copyright (c) 2021 MIKAMI, Naoki |
MikamiUitOpen | 0:3bf11d2ab6ad | 5 | //--------------------------------------------------------------------- |
MikamiUitOpen | 0:3bf11d2ab6ad | 6 | |
MikamiUitOpen | 0:3bf11d2ab6ad | 7 | #include "XferBase.hpp" |
MikamiUitOpen | 0:3bf11d2ab6ad | 8 | |
MikamiUitOpen | 0:3bf11d2ab6ad | 9 | #ifndef XFER_SPECTRUM_DERIVED_HPP |
MikamiUitOpen | 0:3bf11d2ab6ad | 10 | #define XFER_SPECTRUM_DERIVED_HPP |
MikamiUitOpen | 0:3bf11d2ab6ad | 11 | |
MikamiUitOpen | 0:3bf11d2ab6ad | 12 | class XferSpectrum : public XferBase |
MikamiUitOpen | 0:3bf11d2ab6ad | 13 | { |
MikamiUitOpen | 0:3bf11d2ab6ad | 14 | public: |
MikamiUitOpen | 0:3bf11d2ab6ad | 15 | // コンストラクタ |
MikamiUitOpen | 0:3bf11d2ab6ad | 16 | XferSpectrum(SerialRxTxIntr& rxTx, int size) |
MikamiUitOpen | 0:3bf11d2ab6ad | 17 | : XferBase(rxTx, size) {} |
MikamiUitOpen | 0:3bf11d2ab6ad | 18 | |
MikamiUitOpen | 0:3bf11d2ab6ad | 19 | private: |
MikamiUitOpen | 0:3bf11d2ab6ad | 20 | // スペクトル解析の結果を転送する形式に変換 |
MikamiUitOpen | 0:3bf11d2ab6ad | 21 | // yAbs FFT の結果の絶対値 |
MikamiUitOpen | 0:3bf11d2ab6ad | 22 | virtual void Convert(const float yAbs[]) |
MikamiUitOpen | 0:3bf11d2ab6ad | 23 | { |
MikamiUitOpen | 0:3bf11d2ab6ad | 24 | const float MAX = 10000; |
MikamiUitOpen | 0:3bf11d2ab6ad | 25 | for (int n=0; n<SIZE_; n++) |
MikamiUitOpen | 0:3bf11d2ab6ad | 26 | { |
MikamiUitOpen | 0:3bf11d2ab6ad | 27 | float x = yAbs[n]; |
MikamiUitOpen | 0:3bf11d2ab6ad | 28 | xn_[n] = (x > MAX) ? (uint16_t)MAX : (uint16_t)x; |
MikamiUitOpen | 0:3bf11d2ab6ad | 29 | } |
MikamiUitOpen | 0:3bf11d2ab6ad | 30 | } |
MikamiUitOpen | 0:3bf11d2ab6ad | 31 | |
MikamiUitOpen | 0:3bf11d2ab6ad | 32 | // コピー・コンストラクタおよび代入演算子の禁止のため |
MikamiUitOpen | 0:3bf11d2ab6ad | 33 | XferSpectrum(const XferSpectrum&); |
MikamiUitOpen | 0:3bf11d2ab6ad | 34 | XferSpectrum& operator=(const XferSpectrum&); |
MikamiUitOpen | 0:3bf11d2ab6ad | 35 | }; |
MikamiUitOpen | 0:3bf11d2ab6ad | 36 | #endif // XFER_SPECTRUM_DERIVED_HPP |