CQ出版社セミナ,2021/12/07開催「実習・C++言語によるArmマイコンのプログラミング」で使うプログラム.
Dependencies: Array_Matrix mbed SerialTxRxIntr UIT_FFT_Real
DoubleBuffer.hpp@0:a80f730d32a8, 2020-01-15 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Wed Jan 15 12:43:11 2020 +0000
- Revision:
- 0:a80f730d32a8
1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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MikamiUitOpen | 0:a80f730d32a8 | 1 | //-------------------------------------------------------- |
MikamiUitOpen | 0:a80f730d32a8 | 2 | // ダブル・バッファの template クラス |
MikamiUitOpen | 0:a80f730d32a8 | 3 | // 内部のバッファは通常の配列を使用 |
MikamiUitOpen | 0:a80f730d32a8 | 4 | // |
MikamiUitOpen | 0:a80f730d32a8 | 5 | // 2019/11/22, Copyright (c) 2019 MIKAMI, Naoki |
MikamiUitOpen | 0:a80f730d32a8 | 6 | //-------------------------------------------------------- |
MikamiUitOpen | 0:a80f730d32a8 | 7 | |
MikamiUitOpen | 0:a80f730d32a8 | 8 | #ifndef DOUBLE_BUFFER_2DARRAY_HPP |
MikamiUitOpen | 0:a80f730d32a8 | 9 | #define DOUBLE_BUFFER_2DARRAY_HPP |
MikamiUitOpen | 0:a80f730d32a8 | 10 | |
MikamiUitOpen | 0:a80f730d32a8 | 11 | template<class T, int N> class DoubleBuffer |
MikamiUitOpen | 0:a80f730d32a8 | 12 | { |
MikamiUitOpen | 0:a80f730d32a8 | 13 | public: |
MikamiUitOpen | 0:a80f730d32a8 | 14 | // コンストラクタ |
MikamiUitOpen | 0:a80f730d32a8 | 15 | explicit DoubleBuffer(T initialValue) |
MikamiUitOpen | 0:a80f730d32a8 | 16 | : ping_(0), pong_(1), index_(0), full_(false) |
MikamiUitOpen | 0:a80f730d32a8 | 17 | { |
MikamiUitOpen | 0:a80f730d32a8 | 18 | for (int k=0; k<2; k++) |
MikamiUitOpen | 0:a80f730d32a8 | 19 | for (int n=0; n<N; n++) buf_[k][n] = initialValue; |
MikamiUitOpen | 0:a80f730d32a8 | 20 | } |
MikamiUitOpen | 0:a80f730d32a8 | 21 | |
MikamiUitOpen | 0:a80f730d32a8 | 22 | // データを格納 |
MikamiUitOpen | 0:a80f730d32a8 | 23 | void Store(T data) { buf_[ping_][index_++] = data; } |
MikamiUitOpen | 0:a80f730d32a8 | 24 | |
MikamiUitOpen | 0:a80f730d32a8 | 25 | // 出力バッファからデータの取り出し |
MikamiUitOpen | 0:a80f730d32a8 | 26 | T Get(int n) const { return buf_[pong_][n]; } |
MikamiUitOpen | 0:a80f730d32a8 | 27 | |
MikamiUitOpen | 0:a80f730d32a8 | 28 | // バッファが満杯でバッファを切り替える |
MikamiUitOpen | 0:a80f730d32a8 | 29 | void IfFullSwitch() |
MikamiUitOpen | 0:a80f730d32a8 | 30 | { |
MikamiUitOpen | 0:a80f730d32a8 | 31 | if (index_ < N) return; |
MikamiUitOpen | 0:a80f730d32a8 | 32 | |
MikamiUitOpen | 0:a80f730d32a8 | 33 | ping_ ^= 0x1; // バッファ切換えのため |
MikamiUitOpen | 0:a80f730d32a8 | 34 | pong_ ^= 0x1; // バッファ切換えのため |
MikamiUitOpen | 0:a80f730d32a8 | 35 | index_ = 0; |
MikamiUitOpen | 0:a80f730d32a8 | 36 | full_ = true; |
MikamiUitOpen | 0:a80f730d32a8 | 37 | } |
MikamiUitOpen | 0:a80f730d32a8 | 38 | |
MikamiUitOpen | 0:a80f730d32a8 | 39 | // バッファが満杯で,true を返す |
MikamiUitOpen | 0:a80f730d32a8 | 40 | bool IsFull() |
MikamiUitOpen | 0:a80f730d32a8 | 41 | { |
MikamiUitOpen | 0:a80f730d32a8 | 42 | bool temp = full_; |
MikamiUitOpen | 0:a80f730d32a8 | 43 | if (full_) full_ = false; |
MikamiUitOpen | 0:a80f730d32a8 | 44 | return temp; |
MikamiUitOpen | 0:a80f730d32a8 | 45 | } |
MikamiUitOpen | 0:a80f730d32a8 | 46 | |
MikamiUitOpen | 0:a80f730d32a8 | 47 | private: |
MikamiUitOpen | 0:a80f730d32a8 | 48 | T buf_[2][N]; // 標本化したデータのバッファ |
MikamiUitOpen | 0:a80f730d32a8 | 49 | int ping_, pong_; // バッファ切替用 |
MikamiUitOpen | 0:a80f730d32a8 | 50 | int index_; // 入力データのカウンタ |
MikamiUitOpen | 0:a80f730d32a8 | 51 | bool full_; // 満杯の場合 true |
MikamiUitOpen | 0:a80f730d32a8 | 52 | |
MikamiUitOpen | 0:a80f730d32a8 | 53 | // 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:a80f730d32a8 | 54 | DoubleBuffer(const DoubleBuffer&); |
MikamiUitOpen | 0:a80f730d32a8 | 55 | DoubleBuffer& operator=(const DoubleBuffer&); |
MikamiUitOpen | 0:a80f730d32a8 | 56 | }; |
MikamiUitOpen | 0:a80f730d32a8 | 57 | #endif // DOUBLE_BUFFER_2DARRAY_HPP |
MikamiUitOpen | 0:a80f730d32a8 | 58 |