view projects/filter_FIR/FIRfilter.h @ 16:670be80463a3 matrix_gpio

- analog matrixIn/matrixOut are now mapped as floats from 0 to 1
- use of an external PRU code can be enabled with -P <filename>
- 16 channels of programmable GPIO can be accessed straight from render() either writing directly to the matrixGpio[] array or using digitalWrite(),
digitalRead(), setDigitalDirection() macros from Utilities.h .

/*
 * FIRfilter.h
 *
 *  Created on: Aug 5, 2014
 *      Author: Victor Zappi and Andrew McPherson
 */

#ifndef FIRFILTER_H_
#define FIRFILTER_H_


#include <NE10.h>

#define FILTER_TAP_NUM 31

// Coefficients for FIR High Pass Filter at 3 KHz
ne10_float32_t filterTaps[FILTER_TAP_NUM] = {
		-0.000055,
		0.000318,
		0.001401,
		0.003333,
		0.005827,
		0.007995,
		0.008335,
		0.004991,
		-0.003764,
		-0.018906,
		-0.040112,
		-0.065486,
		-0.091722,
		-0.114710,
		-0.130454,
		0.863946,
		-0.130454,
		-0.114710,
		-0.091722,
		-0.065486,
		-0.040112,
		-0.018906,
		-0.003764,
		0.004991,
		0.008335,
		0.007995,
		0.005827,
		0.003333,
		0.001401,
		0.000318,
		-0.000055
};

#endif /* FIRFILTER_H_ */