不韋 呂 / Mbed 2 deprecated DSP_Seminar_FunctionGenerator

CQエレクトロニクス・セミナで使用するファンクション・ジェネレータの プログラム

Dependencies:   Array_Matrix mbed SerialTxRxIntr MyTicker7

MSeq16.hpp@0:8c8bc21159d9, 2022-02-25 (annotated)

Committer:
MikamiUitOpen
Date:
Fri Feb 25 02:36:55 2022 +0000
Revision:
0:8c8bc21159d9
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:8c8bc21159d9 1 //---------------------------------------------------------
MikamiUitOpen 0:8c8bc21159d9 2 // M 系列信号発生器（N = 16）
MikamiUitOpen 0:8c8bc21159d9 3 //
MikamiUitOpen 0:8c8bc21159d9 4 // 2021/09/28, Copyright (c) 2021 MIKAMI, Naoki
MikamiUitOpen 0:8c8bc21159d9 5 //---------------------------------------------------------
MikamiUitOpen 0:8c8bc21159d9 6
MikamiUitOpen 0:8c8bc21159d9 7 #include "mbed.h"
MikamiUitOpen 0:8c8bc21159d9 8
MikamiUitOpen 0:8c8bc21159d9 9 #ifndef MSEQ16_HPP
MikamiUitOpen 0:8c8bc21159d9 10 #define MSEQ16_HPP
MikamiUitOpen 0:8c8bc21159d9 11
MikamiUitOpen 0:8c8bc21159d9 12 namespace Mikami
MikamiUitOpen 0:8c8bc21159d9 13 {
MikamiUitOpen 0:8c8bc21159d9 14 class MSeq16
MikamiUitOpen 0:8c8bc21159d9 15 {
MikamiUitOpen 0:8c8bc21159d9 16 public:
MikamiUitOpen 0:8c8bc21159d9 17 MSeq16() : reg_(1) {}
MikamiUitOpen 0:8c8bc21159d9 18
MikamiUitOpen 0:8c8bc21159d9 19 // 戻り値： 0 => -0.5, 1 => 0.5
MikamiUitOpen 0:8c8bc21159d9 20 float Execute()
MikamiUitOpen 0:8c8bc21159d9 21 {
MikamiUitOpen 0:8c8bc21159d9 22 msb_ = reg_ >> 15;
MikamiUitOpen 0:8c8bc21159d9 23 reg_ = ((reg_ ^ XOR_[msb_]) << 1) | msb_;
MikamiUitOpen 0:8c8bc21159d9 24 return RET_[msb_];
MikamiUitOpen 0:8c8bc21159d9 25 }
MikamiUitOpen 0:8c8bc21159d9 26 private:
MikamiUitOpen 0:8c8bc21159d9 27 static const uint16_t XOR_[2]; // XOR の一方の入力
MikamiUitOpen 0:8c8bc21159d9 28 static const float RET_[2]; // 戻り値として使用
MikamiUitOpen 0:8c8bc21159d9 29 uint16_t reg_; // 16 段の D フリップ･フロップに対応
MikamiUitOpen 0:8c8bc21159d9 30 uint16_t msb_; // 16 段目に相当するビット
MikamiUitOpen 0:8c8bc21159d9 31 };
MikamiUitOpen 0:8c8bc21159d9 32 const uint16_t MSeq16::XOR_[2] = { 0, 0x16 };
MikamiUitOpen 0:8c8bc21159d9 33 const float MSeq16::RET_[2] = { -0.5f, 0.5f };
MikamiUitOpen 0:8c8bc21159d9 34 }
MikamiUitOpen 0:8c8bc21159d9 35 #endif // MSEQ16_HPP