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_DAC.cpp

Committer:
MikamiUitOpen
Date:
2018-11-28
Revision:
1:cd42ecc1e174
Parent:
0:ad30ac2b412b

File content as of revision 1:cd42ecc1e174:

//--------------------------------------------------------
//  Class for buit-in single DAC on STM32F446
//
//  STM32F446 内蔵の DAC 用のクラス
//      DAC_OUT1: A2  (PA_4)
//      DAC_OUT2: D13 (PA_5)
//
//  2018/11/28, Copyright (c) 2018 MIKAMI, Naoki
//--------------------------------------------------------

#include "F446_DAC.hpp"

namespace Mikami
{
    DacF446::DacF446(PinName pin) : da_(pin)
    {
        if ( (pin != A2) && (pin != D13) )
        {
            fprintf(stderr, "Invalid pin name\r\n");
            while (true) {}
        }
        if (pin == A2)
        {
            DAC->CR = DAC_CR_EN1;
            fpWriteDac = &DacF446::WriteDac1;
        }
        else
        {
            DAC->CR = DAC_CR_EN2;
            fpWriteDac = &DacF446::WriteDac2;
        }
    }
}