FFT によるスペクトル解析器
Dependencies: Array_Matrix mbed SerialTxRxIntr UIT_FFT_Real DSP_ADDA
Xfer.hpp@0:91cc5a03f0ca, 2021-01-08 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Fri Jan 08 02:27:46 2021 +0000
- Revision:
- 0:91cc5a03f0ca
1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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MikamiUitOpen | 0:91cc5a03f0ca | 1 | //--------------------------------------------------------------------- |
MikamiUitOpen | 0:91cc5a03f0ca | 2 | // スペクトル解析の結果を PC へ転送するためのクラス |
MikamiUitOpen | 0:91cc5a03f0ca | 3 | // |
MikamiUitOpen | 0:91cc5a03f0ca | 4 | // 2020/02/05, Copyright (c) 2020 MIKAMI, Naoki |
MikamiUitOpen | 0:91cc5a03f0ca | 5 | //--------------------------------------------------------------------- |
MikamiUitOpen | 0:91cc5a03f0ca | 6 | |
MikamiUitOpen | 0:91cc5a03f0ca | 7 | #include <string> |
MikamiUitOpen | 0:91cc5a03f0ca | 8 | #include "Array.hpp" |
MikamiUitOpen | 0:91cc5a03f0ca | 9 | #include "SerialRxTxIntr.hpp" |
MikamiUitOpen | 0:91cc5a03f0ca | 10 | using namespace Mikami; |
MikamiUitOpen | 0:91cc5a03f0ca | 11 | |
MikamiUitOpen | 0:91cc5a03f0ca | 12 | #ifndef XFER_CONVERT_TOPC_HPP |
MikamiUitOpen | 0:91cc5a03f0ca | 13 | #define XFER_CONVERT_TOPC_HPP |
MikamiUitOpen | 0:91cc5a03f0ca | 14 | |
MikamiUitOpen | 0:91cc5a03f0ca | 15 | class Xfer |
MikamiUitOpen | 0:91cc5a03f0ca | 16 | { |
MikamiUitOpen | 0:91cc5a03f0ca | 17 | public: |
MikamiUitOpen | 0:91cc5a03f0ca | 18 | // コンストラクタ |
MikamiUitOpen | 0:91cc5a03f0ca | 19 | Xfer(SerialRxTxIntr& rxTx, int size) |
MikamiUitOpen | 0:91cc5a03f0ca | 20 | : SIZE_(size), xn_(size), rxTx_(rxTx) {} |
MikamiUitOpen | 0:91cc5a03f0ca | 21 | |
MikamiUitOpen | 0:91cc5a03f0ca | 22 | // スペクトル解析の結果を転送する形式に変換 |
MikamiUitOpen | 0:91cc5a03f0ca | 23 | // yAbs FFT の結果の絶対値 |
MikamiUitOpen | 0:91cc5a03f0ca | 24 | // magn 倍率 |
MikamiUitOpen | 0:91cc5a03f0ca | 25 | void Convert(const float yAbs[], float magn = 1.0f) |
MikamiUitOpen | 0:91cc5a03f0ca | 26 | { |
MikamiUitOpen | 0:91cc5a03f0ca | 27 | const float MAX = 10000; |
MikamiUitOpen | 0:91cc5a03f0ca | 28 | for (int n=0; n<SIZE_; n++) |
MikamiUitOpen | 0:91cc5a03f0ca | 29 | { |
MikamiUitOpen | 0:91cc5a03f0ca | 30 | float x = magn*yAbs[n]; |
MikamiUitOpen | 0:91cc5a03f0ca | 31 | xn_[n] = (x > MAX) ? MAX : (uint16_t)x; |
MikamiUitOpen | 0:91cc5a03f0ca | 32 | } |
MikamiUitOpen | 0:91cc5a03f0ca | 33 | } |
MikamiUitOpen | 0:91cc5a03f0ca | 34 | |
MikamiUitOpen | 0:91cc5a03f0ca | 35 | // データを PC へ転送(0 ~ 10,000 の範囲の値を 2 文字で表すコード化を利用) |
MikamiUitOpen | 0:91cc5a03f0ca | 36 | void ToPC() |
MikamiUitOpen | 0:91cc5a03f0ca | 37 | { |
MikamiUitOpen | 0:91cc5a03f0ca | 38 | string str = ""; |
MikamiUitOpen | 0:91cc5a03f0ca | 39 | for (int n=0; n<SIZE_; n++) |
MikamiUitOpen | 0:91cc5a03f0ca | 40 | { |
MikamiUitOpen | 0:91cc5a03f0ca | 41 | div_t a = div(xn_[n], 100); |
MikamiUitOpen | 0:91cc5a03f0ca | 42 | str += a.quot + 0x10; |
MikamiUitOpen | 0:91cc5a03f0ca | 43 | str += a.rem + 0x10; |
MikamiUitOpen | 0:91cc5a03f0ca | 44 | } |
MikamiUitOpen | 0:91cc5a03f0ca | 45 | rxTx_.TxString(str+"\n"); |
MikamiUitOpen | 0:91cc5a03f0ca | 46 | rxTx_.TxString("EOT\n"); |
MikamiUitOpen | 0:91cc5a03f0ca | 47 | } |
MikamiUitOpen | 0:91cc5a03f0ca | 48 | |
MikamiUitOpen | 0:91cc5a03f0ca | 49 | private: |
MikamiUitOpen | 0:91cc5a03f0ca | 50 | const int SIZE_; // PC に送るデータ数 |
MikamiUitOpen | 0:91cc5a03f0ca | 51 | Array<uint16_t> xn_; // PC に送るデータ |
MikamiUitOpen | 0:91cc5a03f0ca | 52 | SerialRxTxIntr& rxTx_; |
MikamiUitOpen | 0:91cc5a03f0ca | 53 | |
MikamiUitOpen | 0:91cc5a03f0ca | 54 | // 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 | 0:91cc5a03f0ca | 55 | Xfer(const Xfer&); |
MikamiUitOpen | 0:91cc5a03f0ca | 56 | Xfer& operator=(const Xfer&); |
MikamiUitOpen | 0:91cc5a03f0ca | 57 | }; |
MikamiUitOpen | 0:91cc5a03f0ca | 58 | #endif // XFER_CONVERT_TOPC_HPP |