不韋 呂 / F446_AD_DA_LinearPhase

Nucleo-F446RE 内蔵の AD/DA を使うためのライブラリ．DA からの出力は，標本化周波数の４倍のレートで行う．出力の補間フィルタには直線位相の FIR フィルタを使用． 　このライブラリを登録した際のプログラム： Demo_F446_AD_DA_MultirateLinearPhase. Library for built-in ADC and DAC in Nucleo-F446RE. Sampling rate for DAC is four times of that for ADC. Interpolation filter for output is linear-phase FIR filter.

Dependencies:   Array_Matrix

Dependents:   Demo_F446_AD_DA_MultirateLinearPhase

F446_ADC.hpp@1:cd42ecc1e174, 2018-11-28 (annotated)

Committer:
MikamiUitOpen
Date:
Wed Nov 28 12:45:18 2018 +0000
Revision:
1:cd42ecc1e174
Parent:
0:ad30ac2b412b 
2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:ad30ac2b412b 1 //----------------------------------------------------------------
MikamiUitOpen 0:ad30ac2b412b 2 // AD Conversion by interrupt using ADC2 or ADC3 on STM32F446
MikamiUitOpen 0:ad30ac2b412b 3 // ---- Header ----
MikamiUitOpen 0:ad30ac2b412b 4 //
MikamiUitOpen 0:ad30ac2b412b 5 // STM32F446 の ADC2 または ADC3 を使って割込みによりアナログ信号を
MikamiUitOpen 0:ad30ac2b412b 6 // 入力するクラス ― マルチ･レート処理用（ヘッダ）
MikamiUitOpen 0:ad30ac2b412b 7 //
MikamiUitOpen 0:ad30ac2b412b 8 // 選択可能な入力端子：
MikamiUitOpen 0:ad30ac2b412b 9 // A0 (PA_0) : ADC2 CH0 ---- デフォルト
MikamiUitOpen 0:ad30ac2b412b 10 // A1 (PA_1) : ADC3 CH1
MikamiUitOpen 0:ad30ac2b412b 11 //
MikamiUitOpen 0:ad30ac2b412b 12 // 2018/04/16, Copyright (c) 2018 MIKAMI, Naoki
MikamiUitOpen 0:ad30ac2b412b 13 //----------------------------------------------------------------
MikamiUitOpen 0:ad30ac2b412b 14
MikamiUitOpen 0:ad30ac2b412b 15 #include "mbed.h"
MikamiUitOpen 0:ad30ac2b412b 16
MikamiUitOpen 0:ad30ac2b412b 17 #ifndef STM32F446xx
MikamiUitOpen 0:ad30ac2b412b 18 #error Not NUCLEO-F446RE.
MikamiUitOpen 0:ad30ac2b412b 19 #endif
MikamiUitOpen 0:ad30ac2b412b 20
MikamiUitOpen 0:ad30ac2b412b 21 #include "F446_DAC.hpp"
MikamiUitOpen 0:ad30ac2b412b 22
MikamiUitOpen 0:ad30ac2b412b 23 #ifndef F446_ADC_SINGLE_HPP
MikamiUitOpen 0:ad30ac2b412b 24 #define F446_ADC_SINGLE_HPP
MikamiUitOpen 0:ad30ac2b412b 25
MikamiUitOpen 0:ad30ac2b412b 26 namespace Mikami
MikamiUitOpen 0:ad30ac2b412b 27 {
MikamiUitOpen 0:ad30ac2b412b 28 class AdcF446
MikamiUitOpen 0:ad30ac2b412b 29 {
MikamiUitOpen 0:ad30ac2b412b 30 public:
MikamiUitOpen 0:ad30ac2b412b 31 // コンストラクタ
MikamiUitOpen 0:ad30ac2b412b 32 // frequency: 標本化周波数
MikamiUitOpen 0:ad30ac2b412b 33 AdcF446(int frequency, PinName pin = A0);
MikamiUitOpen 0:ad30ac2b412b 34
MikamiUitOpen 0:ad30ac2b412b 35 virtual ~AdcF446() {}
MikamiUitOpen 0:ad30ac2b412b 36
MikamiUitOpen 0:ad30ac2b412b 37 // -1.0f <= AD変換された値 < 1.0f
MikamiUitOpen 0:ad30ac2b412b 38 // ad1: left, ad2: right
MikamiUitOpen 0:ad30ac2b412b 39 float Read() { return ToFloat(adc_->DR); }
MikamiUitOpen 0:ad30ac2b412b 40
MikamiUitOpen 0:ad30ac2b412b 41 // 割込みベクタを設定し，ADC 割込みを有効にする
MikamiUitOpen 0:ad30ac2b412b 42 void SetIntrVec(void (*Func)());
MikamiUitOpen 0:ad30ac2b412b 43
MikamiUitOpen 0:ad30ac2b412b 44 // ADC 割込みを無効にする
MikamiUitOpen 0:ad30ac2b412b 45 void DisableAdcIntr()
MikamiUitOpen 0:ad30ac2b412b 46 { NVIC_DisableIRQ(ADC_IRQn); }
MikamiUitOpen 0:ad30ac2b412b 47
MikamiUitOpen 0:ad30ac2b412b 48 private:
MikamiUitOpen 0:ad30ac2b412b 49 static const float AMP_ = 1.0f/2048.0f;
MikamiUitOpen 0:ad30ac2b412b 50 ADC_TypeDef *adc_;
MikamiUitOpen 0:ad30ac2b412b 51
MikamiUitOpen 0:ad30ac2b412b 52 float ToFloat(uint16_t x) { return AMP_*(x - 2048); }
MikamiUitOpen 0:ad30ac2b412b 53
MikamiUitOpen 0:ad30ac2b412b 54 // AD 変換器の外部トリガに使うタイマ (TIM8) の設定
MikamiUitOpen 0:ad30ac2b412b 55 void SetTim8(int frequency);
MikamiUitOpen 0:ad30ac2b412b 56
MikamiUitOpen 0:ad30ac2b412b 57 // for inhibition of copy constructor
MikamiUitOpen 0:ad30ac2b412b 58 AdcF446(const AdcF446&);
MikamiUitOpen 0:ad30ac2b412b 59 // for inhibition of substitute operator
MikamiUitOpen 0:ad30ac2b412b 60 AdcF446& operator=(const AdcF446&);
MikamiUitOpen 0:ad30ac2b412b 61 };
MikamiUitOpen 0:ad30ac2b412b 62 }
MikamiUitOpen 0:ad30ac2b412b 63 #endif // F446_ADC_SINGLE_HPP