portapack-mayhem/firmware/application/receiver_model.cpp
2023-05-21 08:59:42 +02:00

328 lines
8.8 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "receiver_model.hpp"
#include "baseband_api.hpp"
#include "portapack_persistent_memory.hpp"
#include "hackrf_gpio.hpp"
#include "portapack.hpp"
using namespace hackrf::one;
using namespace portapack;
#include "radio.hpp"
#include "audio.hpp"
#include "dsp_fir_taps.hpp"
#include "dsp_iir.hpp"
#include "dsp_iir_config.hpp"
namespace {
static constexpr std::array<baseband::AMConfig, 5> am_configs{{
// we config here all the non COMMON parameters to each AM modulation type in RX.
{taps_9k0_decim_2, taps_9k0_dsb_channel, AMConfigureMessage::Modulation::DSB}, // AM DSB-C BW 9khz (+-4k5) commercial EU bandwidth .
{taps_6k0_decim_2, taps_6k0_dsb_channel, AMConfigureMessage::Modulation::DSB}, // AM DSB-C BW 6khz (+-3k0) narrow AM , ham equipments.
{taps_6k0_decim_2, taps_2k8_usb_channel, AMConfigureMessage::Modulation::SSB}, // SSB USB BW 2K8 (+ 2K8)
{taps_6k0_decim_2, taps_2k8_lsb_channel, AMConfigureMessage::Modulation::SSB}, // SSB LSB BW 2K8 (- 2K8)
{taps_6k0_decim_2, taps_0k7_usb_channel, AMConfigureMessage::Modulation::SSB}, // SSB USB BW 0K7 (+ 0K7) used to get audio tone from CW Morse, assuming tx shifted +700hz aprox
}};
static constexpr std::array<baseband::NBFMConfig, 3> nbfm_configs{{
{taps_4k25_decim_0, taps_4k25_decim_1, taps_4k25_channel, 2500},
{taps_11k0_decim_0, taps_11k0_decim_1, taps_11k0_channel, 2500},
{taps_16k0_decim_0, taps_16k0_decim_1, taps_16k0_channel, 5000},
}};
static constexpr std::array<baseband::WFMConfig, 3> wfm_configs{{
{taps_200k_wfm_decim_0, taps_200k_wfm_decim_1},
{taps_180k_wfm_decim_0, taps_180k_wfm_decim_1},
{taps_40k_wfm_decim_0, taps_40k_wfm_decim_1},
}};
} /* namespace */
rf::Frequency ReceiverModel::tuning_frequency() const {
return persistent_memory::tuned_frequency();
}
void ReceiverModel::set_tuning_frequency(rf::Frequency f) {
persistent_memory::set_tuned_frequency(f);
update_tuning_frequency();
}
rf::Frequency ReceiverModel::frequency_step() const {
return frequency_step_;
}
void ReceiverModel::set_frequency_step(rf::Frequency f) {
frequency_step_ = f;
}
void ReceiverModel::set_antenna_bias() {
update_antenna_bias();
}
bool ReceiverModel::rf_amp() const {
return rf_amp_;
}
void ReceiverModel::set_rf_amp(bool enabled) {
rf_amp_ = enabled;
update_rf_amp();
}
int32_t ReceiverModel::lna() const {
return lna_gain_db_;
}
void ReceiverModel::set_lna(int32_t v_db) {
lna_gain_db_ = v_db;
update_lna();
}
uint32_t ReceiverModel::baseband_bandwidth() const {
return baseband_bandwidth_;
}
void ReceiverModel::set_baseband_bandwidth(uint32_t v) {
baseband_bandwidth_ = v;
update_baseband_bandwidth();
}
int32_t ReceiverModel::vga() const {
return vga_gain_db_;
}
void ReceiverModel::set_vga(int32_t v_db) {
vga_gain_db_ = v_db;
update_vga();
}
int32_t ReceiverModel::tx_gain() const {
return tx_gain_db_;
}
void ReceiverModel::set_tx_gain(int32_t v_db) {
tx_gain_db_ = v_db;
update_tx_gain();
}
uint32_t ReceiverModel::sampling_rate() const {
return sampling_rate_;
}
void ReceiverModel::set_sampling_rate(uint32_t v) {
sampling_rate_ = v;
update_sampling_rate();
}
ReceiverModel::Mode ReceiverModel::modulation() const {
return mode_;
}
void ReceiverModel::set_modulation(const Mode v) {
mode_ = v;
update_modulation();
}
volume_t ReceiverModel::headphone_volume() const {
return headphone_volume_;
}
void ReceiverModel::set_headphone_volume(volume_t v) {
headphone_volume_ = v;
update_headphone_volume();
}
uint8_t ReceiverModel::squelch_level() const {
return squelch_level_;
}
void ReceiverModel::set_squelch_level(uint8_t v) {
squelch_level_ = v;
update_modulation();
}
void ReceiverModel::enable() {
enabled_ = true;
radio::set_direction(rf::Direction::Receive);
update_tuning_frequency();
update_antenna_bias();
update_rf_amp();
update_lna();
update_vga();
update_tx_gain();
update_baseband_bandwidth();
update_sampling_rate();
update_modulation();
// TODO: would challenge if this should belong to the
// receiver_model namespace:
update_headphone_volume();
led_rx.on();
}
void ReceiverModel::disable() {
enabled_ = false;
radio::set_antenna_bias(false);
// TODO: Responsibility for enabling/disabling the radio is muddy.
// Some happens in ReceiverModel, some inside radio namespace.
radio::disable();
// TODO: we are doing this repeatedly in different levels of the
// call stack. Keeping it for now, but there seem to be too many
// redundant calls:
led_rx.off();
}
int32_t ReceiverModel::tuning_offset() {
if ((modulation() == Mode::SpectrumAnalysis)) {
return 0;
} else {
return -(sampling_rate() / 4);
}
}
void ReceiverModel::update_tuning_frequency() {
radio::set_tuning_frequency(persistent_memory::tuned_frequency() + tuning_offset());
}
void ReceiverModel::update_antenna_bias() {
if (enabled_)
radio::set_antenna_bias(portapack::get_antenna_bias());
}
void ReceiverModel::update_rf_amp() {
radio::set_rf_amp(rf_amp_);
}
void ReceiverModel::update_lna() {
radio::set_lna_gain(lna_gain_db_);
}
void ReceiverModel::update_baseband_bandwidth() {
radio::set_baseband_filter_bandwidth(baseband_bandwidth_);
}
void ReceiverModel::update_vga() {
radio::set_vga_gain(vga_gain_db_);
}
void ReceiverModel::update_tx_gain() {
radio::set_tx_gain(tx_gain_db_);
}
void ReceiverModel::set_am_configuration(const size_t n) {
if (n < am_configs.size()) {
am_config_index = n;
update_modulation();
}
}
void ReceiverModel::set_nbfm_configuration(const size_t n) {
if (n < nbfm_configs.size()) {
nbfm_config_index = n;
update_modulation();
}
}
void ReceiverModel::set_wfm_configuration(const size_t n) {
if (n < wfm_configs.size()) {
wfm_config_index = n;
update_modulation();
}
}
void ReceiverModel::update_sampling_rate() {
// TODO: Move more low-level radio control stuff to M4. It'll enable tighter
// synchronization for things like wideband (sweeping) spectrum analysis, and
// protocols that need quick RX/TX turn-around.
// Disabling baseband while changing sampling rates seems like a good idea...
radio::set_baseband_rate(sampling_rate());
update_tuning_frequency();
}
void ReceiverModel::update_headphone_volume() {
// TODO: Manipulating audio codec here, and in ui_receiver.cpp. Good to do
// both?
audio::headphone::set_volume(headphone_volume_);
}
void ReceiverModel::update_modulation() {
switch (modulation()) {
default:
case Mode::AMAudio:
update_am_configuration();
break;
case Mode::NarrowbandFMAudio:
update_nbfm_configuration();
break;
case Mode::WidebandFMAudio:
update_wfm_configuration();
break;
case Mode::SpectrumAnalysis:
case Mode::Capture:
break;
}
}
size_t ReceiverModel::am_configuration() const {
return am_config_index;
}
void ReceiverModel::update_am_configuration() {
am_configs[am_config_index].apply();
}
size_t ReceiverModel::nbfm_configuration() const {
return nbfm_config_index;
}
void ReceiverModel::update_nbfm_configuration() {
nbfm_configs[nbfm_config_index].apply(squelch_level_);
}
size_t ReceiverModel::wfm_configuration() const {
return wfm_config_index;
}
void ReceiverModel::update_wfm_configuration() {
wfm_configs[wfm_config_index].apply();
}
void ReceiverModel::set_configuration_without_init(const Mode new_mode, const rf::Frequency new_frequency_step, const size_t new_am_config_index, const size_t new_nbfm_config_index, const size_t new_wfm_config_index, uint8_t new_squelch_level) {
mode_ = new_mode;
frequency_step_ = new_frequency_step;
am_config_index = new_am_config_index;
nbfm_config_index = new_nbfm_config_index;
wfm_config_index = new_wfm_config_index;
squelch_level_ = new_squelch_level;
}