85 lines
2.2 KiB
C
85 lines
2.2 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 __RTTY_H
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#define __RTTY_H
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#include "uhsdr_types.h"
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typedef enum {
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RTTY_STOP_1 = 0,
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RTTY_STOP_1_5,
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RTTY_STOP_2
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} rtty_stop_t;
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typedef struct
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{
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float32_t speed;
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rtty_stop_t stopbits;
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uint16_t shift;
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float32_t samplerate;
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} rtty_mode_config_t;
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typedef enum {
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RTTY_SPEED_45,
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RTTY_SPEED_50,
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RTTY_SPEED_NUM
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} rtty_speed_t;
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typedef enum {
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RTTY_SHIFT_85,
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RTTY_SHIFT_170,
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RTTY_SHIFT_200,
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RTTY_SHIFT_425,
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RTTY_SHIFT_450,
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RTTY_SHIFT_850,
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RTTY_SHIFT_NUM
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} rtty_shift_t;
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typedef struct
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{
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rtty_speed_t id;
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float32_t value;
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char* label;
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} rtty_speed_item_t;
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// TODO: Probably we should define just a few for the various value types and let
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// the id be an uint32_t
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typedef struct
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{
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rtty_shift_t id;
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uint32_t value;
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char* label;
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} rtty_shift_item_t;
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extern const rtty_speed_item_t rtty_speeds[RTTY_SPEED_NUM];
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extern const rtty_shift_item_t rtty_shifts[RTTY_SHIFT_NUM];
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extern float32_t decayavg(float32_t average, float32_t input, int weight);
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// TODO: maybe this should be placed in the ui or radio management part
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typedef struct
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{
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rtty_shift_t shift_idx;
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rtty_speed_t speed_idx;
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rtty_stop_t stopbits_idx;
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bool atc_disable; // should the automatic level control be turned off?
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} rtty_ctrl_t;
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extern rtty_ctrl_t rtty_ctrl_config;
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void Rtty_Modem_Init(uint32_t output_sample_rate);
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void Rtty_Demodulator_ProcessSample(float32_t sample);
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int16_t Rtty_Modulator_GenSample(void);
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#endif
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