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- /*
- * afsk_decoder.h
- *
- * Created on: Sep 10, 2019
- * Author: curiousmuch
- */
- #ifndef AFSK_DEMODULATOR_H_
- #define AFSK_DEMODULATOR_H_
- #define WINDOW_SIZE 11
- #define SAMPLEFREQUENCY 13200
- void window_init(void);
- void window_add(int8_t sample);
- int8_t* window_get(void);
- unsigned int window_get_size(void);
- float goertzel_filter(int8_t samples[], float freq, unsigned int N);
- void goertzel_init(float freq0, float freq1, float *coeff0, float *coeff1);
- float goertzelFilter(int samples[], float freq, int N);
- #endif /* MAIN_AFSK_DECODER_H_ */
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