first test of done filter
Dependencies: biquadFilter mbed HIDScope
main.cpp
- Committer:
- s1604554
- Date:
- 2016-10-31
- Revision:
- 11:50ef30ca2b59
- Parent:
- 10:bc2c13508fe5
- Child:
- 12:b7025b3a111b
File content as of revision 11:50ef30ca2b59:
#include "mbed.h" #include "BiQuad.h" #include "stdlib.h" #include <iostream> #include <cmath> #include <string> #include "HIDScope.h" AnalogIn emg0(A0); AnalogIn emg1(A1); DigitalOut led1(LED1); HIDScope scope( 2 ); Ticker emgticker; BiQuadChain bqc; BiQuad bq1( 8.17310e-01, 0.00000e+00, -8.17310e-01, -1.57627e-01, -6.34619e-01 ); //bandpass BiQuad bq2( 6.68124e-01, -1.27085e+00, 6.68124e-01, -1.27085e+00, 3.36249e-01 ); //notchnotch //there is a rectifier between these two bqc's //gives you new highfrequency noise, so lowpass afterwards BiQuadChain bqc2; BiQuad bq3( 2.00834e-02, 4.01667e-02, 2.00834e-02, -1.56102e+00, 6.41352e-01 ); //lowpass void Sample () { double emgSignal = emg0.read(); double emgFiltered1 = bqc.step(emgSignal); double emgFiltered2 = fabs(emgFiltered1); double emgFiltered3 = bqc2.step(emgFiltered2); scope.set(0, emgSignal); scope.set(1, emgFiltered3); scope.send(); if (emgFiltered3 >= 0.1) { led1 = !led1; emgFiltered3 = true; } } int main() { led1 = 1; bqc.add( &bq1 ).add( &bq2 ); bqc2.add( &bq3 ); emgticker.attach(&Sample, 0.001); while (true) { } }