portapack-mayhem/firmware/application/hw/max283x.hpp
Brumi-2021 defb934c3f
Activating TX Low Pass Filter in Second IF IC (#1470)
* Activating TX Low Pass Filter in Second IF IC
* solving PR conversation revisions
* Final TX LPF decision for ADSB_TX
* Small comments correction.
* Added set TX LPF also  in APRS, BurgerPgr,Jammer
2023-10-08 17:50:31 +02:00

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3.4 KiB
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/*
* Copyright (C) 2023 Great Scott Gadgets
*
* 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.
*/
#ifndef __MAX283X_H__
#define __MAX283X_H__
#include <array>
#include "rf_path.hpp"
namespace max283x {
/*************************************************************************/
namespace lo {
constexpr std::array<rf::FrequencyRange, 4> band{{
{2300000000, 2400000000},
{2400000000, 2500000000},
{2500000000, 2600000000},
{2600000000, 2700000000},
}};
} /* namespace lo */
/*************************************************************************/
namespace lna {
constexpr range_t<int8_t> gain_db_range{0, 40};
constexpr int8_t gain_db_step = 8;
constexpr std::array<rf::FrequencyRange, 2> band{{
{2300000000, 2500000000},
{2500000000, 2700000000},
}};
} /* namespace lna */
/*************************************************************************/
namespace vga {
constexpr range_t<int8_t> gain_db_range{0, 62};
constexpr int8_t gain_db_step = 2;
} /* namespace vga */
/*************************************************************************/
namespace tx {
constexpr range_t<int8_t> gain_db_range{0, 47};
constexpr int8_t gain_db_step = 1;
} // namespace tx
/*************************************************************************/
namespace filter {
constexpr std::array<uint32_t, 16> bandwidths{
/* Assumption: these values are in ascending order */
1750000,
2500000, /* Some documentation says 2.25MHz */
3500000,
5000000,
5500000,
6000000,
7000000,
8000000,
9000000,
10000000,
12000000,
14000000,
15000000,
20000000,
24000000,
28000000,
};
constexpr auto bandwidth_minimum = bandwidths[0];
constexpr auto bandwidth_maximum = bandwidths[bandwidths.size() - 1];
} /* namespace filter */
/*************************************************************************/
enum Mode {
Shutdown,
Standby,
Receive,
Transmit,
};
using reg_t = uint16_t;
using address_t = uint8_t;
class MAX283x {
public:
virtual ~MAX283x() = default;
virtual void init();
virtual void set_mode(const Mode mode);
virtual void set_tx_vga_gain(const int_fast8_t db);
virtual void set_lna_gain(const int_fast8_t db);
virtual void set_vga_gain(const int_fast8_t db);
virtual void set_lpf_rf_bandwidth_rx(const uint32_t bandwidth_minimum);
virtual void set_lpf_rf_bandwidth_tx(const uint32_t bandwidth_minimum);
virtual bool set_frequency(const rf::Frequency lo_frequency);
virtual void set_rx_lo_iq_calibration(const size_t v);
virtual void set_rx_buff_vcm(const size_t v);
virtual reg_t temp_sense();
virtual reg_t read(const address_t reg_num);
};
} // namespace max283x
#endif /*__MAX283X_H__*/