66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
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/* -*- mode: c; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4; coding: utf-8 -*- */
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/************************************************************************************
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** **
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** UHSDR FIRMWARE **
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** **
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**---------------------------------------------------------------------------------**
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** Licence: GNU GPLv3, see LICENSE.md **
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************************************************************************************/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef __PSK_H
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#define __PSK_H
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#include "uhsdr_types.h"
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// externally defined for UiSpectrum markers
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#define PSK_OFFSET 500
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#define PSK_SNAP_RANGE 100 // defines the range within which the SNAP algorithm in spectrum.c searches for the PSK carrier
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typedef enum {
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PSK_SPEED_31,
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PSK_SPEED_63,
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PSK_SPEED_125,
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PSK_SPEED_NUM
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} psk_speed_t;
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typedef struct
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{
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psk_speed_t id;
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float32_t value;
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const float32_t* bpf_b;
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const float32_t* bpf_a;
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uint16_t rate;
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char* label;
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} psk_speed_item_t;
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extern const psk_speed_item_t psk_speeds[PSK_SPEED_NUM];
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typedef struct
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{
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psk_speed_t speed_idx;
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} psk_ctrl_t;
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extern psk_ctrl_t psk_ctrl_config;
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typedef enum {
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PSK_MOD_OFF,
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PSK_MOD_PREAMBLE,
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PSK_MOD_ACTIVE,
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PSK_MOD_POSTAMBLE,
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PSK_MOD_INACTIVE
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} psk_modulator_t;
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psk_modulator_t Psk_Modulator_GetState(void);
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psk_modulator_t Psk_Modulator_SetState(psk_modulator_t newState);
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void Psk_Modem_Init(uint32_t output_sample_rate);
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void Psk_Modulator_PrepareTx(void);
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void Psk_Demodulator_ProcessSample(float32_t sample);
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int16_t Psk_Modulator_GenSample(void);
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#endif
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