CQpub0 Mikami / Mbed 2 deprecated FIR_LPF_Symmetry

The experiment using this program is introduced on "Interface" No.12, CQ publishing Co.,Ltd, 2014. 本プログラムを使った実験は，CQ出版社のインターフェース 2014年12月号で紹介しています．

Dependencies:   DSProcessingIO mbed

FIR_LPF_Symmetry.cpp

Committer:
CQpub0Mikami
Date:
2014-07-29
Revision:
1:bd300d649b1f
Parent:
0:4498a5360dde

File content as of revision 1:bd300d649b1f:

//--------------------------------------------------------------
// FIR filter: Even order, Symmetric structure of direct form
//
// Copyright (c) 2014 MIKAMI, Naoki,  2014/06/20 
//--------------------------------------------------------------

#include "mbed.h"
#include "AdcInternal.hpp"
#include "MCP4922Single.hpp"
#include "coefficientsSym_200.hpp"
#include "FIR_Symmetry.hpp"

using namespace Mikami;

// sampling frequency
const float FS_ = 10.0e3f;

Adc adc_(A0);
Dac dacA_(Dac::DAC_A);
Ticker timer_;           // for timer interrupt

FirSymmetry<ORDER_> lpf(hm_);

void TimerIsr()
{
    float xn = adc_.Read(); // input

    // Execute FIR filter
    float yn = lpf.Execute(xn);

    dacA_.Write(yn);        // output
}

int main()
{
    timer_.attach_us(&TimerIsr, 1.0e6f/FS_);

    while (true) {}    // infinite loop
}