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Added CTCSS decoder in NFM RX

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RSSI output is now pitch instead of PWM
Disabled RSSI output in WBFM mode
This commit is contained in:
furrtek
2017-11-28 08:52:04 +01:00
parent f128b9b0b7
commit d77337dd77
19 changed files with 284 additions and 160 deletions
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45
firmware/baseband/proc_nfm_audio.hpp
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@@ -29,6 +29,7 @@
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "dsp_iir.hpp"
#include "audio_output.hpp"
#include "spectrum_collector.hpp"
@@ -52,16 +53,21 @@ private:
dst.data(),
dst.size()
};
std::array<float, 32> audio { };
const buffer_f32_t audio_buffer {
audio.data(),
audio.size()
const buffer_s16_t work_audio_buffer {
(int16_t*)dst.data(),
sizeof(dst) / sizeof(int16_t)
};
std::array<int16_t, 32> pwm { };
const buffer_s16_t pwmrssi_audio_buffer {
(int16_t*)pwm.data(),
sizeof(pwm) / sizeof(int16_t)
std::array<int16_t, 16> audio { };
const buffer_s16_t audio_buffer {
(int16_t*)audio.data(),
sizeof(audio) / sizeof(int16_t)
};
std::array<int16_t, 16> tone { };
const buffer_s16_t tone_buffer {
(int16_t*)tone.data(),
sizeof(tone) / sizeof(int16_t)
};
dsp::decimate::FIRC8xR16x24FS4Decim8 decim_0 { };
@@ -69,25 +75,34 @@ private:
dsp::decimate::FIRAndDecimateComplex channel_filter { };
uint32_t channel_filter_pass_f = 0;
uint32_t channel_filter_stop_f = 0;
// For CTCSS decoding
dsp::decimate::FIR64AndDecimateBy2Real ctcss_filter { };
IIRBiquadFilter hpf { };
dsp::demodulate::FM demod { };
AudioOutput audio_output { };
bool old_state { };
SpectrumCollector channel_spectrum { };
unsigned int c { 0 }, synth_acc { 0 };
uint32_t synth_div { 0 };
bool pwmrssi_enabled = false;
uint32_t pwmrssi_avg { 0 };
uint32_t tone_phase { 0 };
uint32_t tone_delta { 0 };
bool pitch_rssi_enabled { false };
float cur_sample { }, prev_sample { };
uint32_t z_acc { 0}, z_timer { 0 }, z_count { 0 };
bool ctcss_detect_enabled { true };
static constexpr float k = 32768.0f;
static constexpr float ki = 1.0f / k;
bool configured { false };
void pwmrssi_config(const PWMRSSIConfigureMessage& message);
void pitch_rssi_config(const PitchRSSIConfigureMessage& message);
void configure(const NBFMConfigureMessage& message);
void capture_config(const CaptureConfigMessage& message);
RequestSignalMessage sig_message { RequestSignalMessage::Signal::Squelched };
//RequestSignalMessage sig_message { RequestSignalMessage::Signal::Squelched };
CodedSquelchMessage ctcss_message { 0 };
};
#endif/*__PROC_NFM_AUDIO_H__*/