不韋 呂 / Mbed 2 deprecated Cpp_FFT_Analyzer

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

F446_ADDA/F446_Dac.hpp@5:5e55a5f440c0, 2020-04-02 (annotated)

Committer:
MikamiUitOpen
Date:
Thu Apr 02 01:12:34 2020 +0000
Revision:
5:5e55a5f440c0
Parent:
2:d28a3f741217 
6

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:d28a3f741217 1 //--------------------------------------------------------
MikamiUitOpen 2:d28a3f741217 2 // STM32F446 内蔵の DAC 用のクラス
MikamiUitOpen 2:d28a3f741217 3 // 出力端子： A2 (PA_4)
MikamiUitOpen 2:d28a3f741217 4 //
MikamiUitOpen 2:d28a3f741217 5 // 2020/01/28, Copyright (c) 2020 MIKAMI, Naoki
MikamiUitOpen 2:d28a3f741217 6 //--------------------------------------------------------
MikamiUitOpen 2:d28a3f741217 7 #include "mbed.h"
MikamiUitOpen 2:d28a3f741217 8
MikamiUitOpen 2:d28a3f741217 9 #ifndef DAC_F446_SINGLE_HPP
MikamiUitOpen 2:d28a3f741217 10 #define DAC_F446_SINGLE_HPP
MikamiUitOpen 2:d28a3f741217 11
MikamiUitOpen 2:d28a3f741217 12 namespace Mikami
MikamiUitOpen 2:d28a3f741217 13 {
MikamiUitOpen 2:d28a3f741217 14 class DacF446
MikamiUitOpen 2:d28a3f741217 15 {
MikamiUitOpen 2:d28a3f741217 16 public:
MikamiUitOpen 2:d28a3f741217 17 // コンストラクタ， A2 に接続される CH1 のみを有効にする
MikamiUitOpen 2:d28a3f741217 18 DacF446() : da_(A2) { DAC->CR = DAC_CR_EN1; }
MikamiUitOpen 2:d28a3f741217 19
MikamiUitOpen 2:d28a3f741217 20 virtual ~DacF446() {}
MikamiUitOpen 2:d28a3f741217 21
MikamiUitOpen 2:d28a3f741217 22 // -1.0f <= data <= 1.0f
MikamiUitOpen 2:d28a3f741217 23 void Write(float data) { WriteDacCh1(ToUint16(data)); }
MikamiUitOpen 2:d28a3f741217 24
MikamiUitOpen 2:d28a3f741217 25 // 0 <= data <= 4095
MikamiUitOpen 2:d28a3f741217 26 void Write(uint16_t data) { WriteDacCh1(__USAT(data, BIT_WIDTH_)); }
MikamiUitOpen 2:d28a3f741217 27
MikamiUitOpen 2:d28a3f741217 28 private:
MikamiUitOpen 2:d28a3f741217 29 static const int BIT_WIDTH_ = 12;
MikamiUitOpen 2:d28a3f741217 30 AnalogOut da_;
MikamiUitOpen 2:d28a3f741217 31
MikamiUitOpen 2:d28a3f741217 32 // DAC の CH1 へ右詰めで出力する
MikamiUitOpen 2:d28a3f741217 33 void WriteDacCh1(uint16_t val) { DAC->DHR12R1 = val; }
MikamiUitOpen 2:d28a3f741217 34
MikamiUitOpen 2:d28a3f741217 35 // 飽和処理を行い uint16_t 型のデータを戻り値とする
MikamiUitOpen 2:d28a3f741217 36 uint16_t ToUint16(float val)
MikamiUitOpen 2:d28a3f741217 37 { return __USAT((val + 1.0f)*2048.0f, BIT_WIDTH_); }
MikamiUitOpen 2:d28a3f741217 38
MikamiUitOpen 2:d28a3f741217 39 // コピー･コンストラクタ禁止のため
MikamiUitOpen 2:d28a3f741217 40 DacF446(const DacF446&);
MikamiUitOpen 2:d28a3f741217 41 // 代入演算子禁止のため
MikamiUitOpen 2:d28a3f741217 42 DacF446& operator=(const DacF446&);
MikamiUitOpen 2:d28a3f741217 43 };
MikamiUitOpen 2:d28a3f741217 44 }
MikamiUitOpen 2:d28a3f741217 45 #endif // DAC_F446_SINGLE_HPP