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//
// Copyright 2017 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0
//
#include "magnesium_gain_table.hpp"
#include "magnesium_constants.hpp"
#include <uhd/exception.hpp>
#include <algorithm>
#include <map>
using namespace uhd;
using namespace magnesium;
namespace {
//! Maps gain index -> gain_tuple_t
//
// Note: This is an int, for easier lookups. We're basically hardcoding the
// knowledge that the gain map has a 1 dB granularity.
using gain_tuple_map_t = std::map<int, gain_tuple_t>;
//! Maps max frequency -> gain_tuple_map_t
using gain_tables_t = std::map<double, gain_tuple_map_t>;
/*! RX gain tables
*/
const gain_tables_t rx_gain_tables = {
{MAGNESIUM_LOWBAND_FREQ, {
// Gain, DSA att, Myk att, bypass
{0, {30, 30, true}},
{1, {30, 29, true}},
{2, {30, 28, true}},
{3, {30, 27, true}},
{4, {30, 26, true}},
{5, {30, 25, true}},
{6, {29, 25, true}},
{7, {28, 25, true}},
{8, {27, 25, true}},
{9, {26, 25, true}},
{10, {25, 25, true}},
{11, {25, 24, true}},
{12, {25, 23, true}},
{13, {25, 22, true}},
{14, {25, 21, true}},
{15, {25, 20, true}},
{16, {24, 20, true}},
{17, {23, 20, true}},
{18, {22, 20, true}},
{19, {21, 20, true}},
{20, {20, 20, true}},
{21, {20, 19, true}},
{22, {20, 18, true}},
{23, {20, 17, true}},
{24, {20, 16, true}},
{25, {20, 15, true}},
{26, {19, 15, true}},
{27, {18, 15, true}},
{28, {17, 15, true}},
{29, {16, 15, true}},
{30, {15, 15, true}},
{31, {14, 15, true}},
{32, {13, 15, true}},
{33, {12, 15, true}},
{34, {11, 15, true}},
{35, {10, 15, true}},
{36, {10, 14, true}},
{37, {10, 13, true}},
{38, {10, 12, true}},
{39, {10, 11, true}},
{40, {10, 10, true}},
{41, {9, 10, true}},
{42, {8, 10, true}},
{43, {7, 10, true}},
{44, {6, 10, true}},
{45, {5, 10, true}},
{46, {4, 10, true}},
{47, {3, 10, true}},
{48, {2, 10, true}},
{49, {1, 10, true}},
{50, {15, 15, false}},
{51, {14, 15, false}},
{52, {13, 15, false}},
{53, {12, 15, false}},
{54, {11, 15, false}},
{55, {10, 15, false}},
{56, {10, 14, false}},
{57, {10, 13, false}},
{58, {10, 12, false}},
{59, {10, 11, false}},
{60, {10, 10, false}},
{61, {9, 10, false}},
{62, {8, 10, false}},
{63, {7, 10, false}},
{64, {6, 10, false}},
{65, {5, 10, false}},
{66, {4, 10, false}},
{67, {3, 10, false}},
{68, {2, 10, false}},
{69, {1, 10, false}},
{70, {0, 10, false}},
{71, {0, 9, false}},
{72, {0, 8, false}},
{73, {0, 7, false}},
{74, {0, 6, false}},
{75, {0, 5, false}}
}},
{MAGNESIUM_RX_BAND4_MIN_FREQ, {
{0, {30, 30, true}},
{1, {30, 29, true}},
{2, {30, 28, true}},
{3, {30, 27, true}},
{4, {30, 26, true}},
{5, {30, 25, true}},
{6, {30, 24, true}},
{7, {30, 23, true}},
{8, {30, 22, true}},
{9, {30, 21, true}},
{10, {30, 20, true}},
{11, {30, 19, true}},
{12, {30, 18, true}},
{13, {30, 17, true}},
{14, {30, 16, true}},
{15, {30, 15, true}},
{16, {29, 15, true}},
{17, {28, 15, true}},
{18, {27, 15, true}},
{19, {26, 15, true}},
{20, {25, 15, true}},
{21, {24, 15, true}},
{22, {23, 15, true}},
{23, {22, 15, true}},
{24, {21, 15, true}},
{25, {20, 15, true}},
{26, {19, 15, true}},
{27, {18, 15, true}},
{28, {17, 15, true}},
{29, {16, 15, true}},
{30, {15, 15, true}},
{31, {14, 15, true}},
{32, {13, 15, true}},
{33, {12, 15, true}},
{34, {11, 15, true}},
{35, {10, 15, true}},
{36, {9, 15, true}},
{37, {8, 15, true}},
{38, {7, 15, true}},
{39, {6, 15, true}},
{40, {5, 15, true}},
{41, {5, 14, true}},
{42, {5, 13, true}},
{43, {5, 12, true}},
{44, {5, 11, true}},
{45, {5, 10, true}},
{46, {4, 10, true}},
{47, {3, 10, true}},
{48, {2, 10, true}},
{49, {1, 10, true}},
{50, {15, 15, false}},
{51, {15, 14, false}},
{52, {15, 13, false}},
{53, {15, 12, false}},
{54, {15, 11, false}},
{55, {15, 10, false}},
{56, {15, 9, false}},
{57, {15, 8, false}},
{58, {15, 7, false}},
{59, {15, 6, false}},
{60, {15, 5, false}},
{61, {14, 5, false}},
{62, {13, 5, false}},
{63, {12, 5, false}},
{64, {11, 5, false}},
{65, {10, 5, false}},
{66, {10, 4, false}},
{67, {10, 3, false}},
{68, {10, 2, false}},
{69, {10, 1, false}},
{70, {10, 0, false}},
{71, {9, 0, false}},
{72, {8, 0, false}},
{73, {7, 0, false}},
{74, {6, 0, false}},
{75, {5, 0, false}}
}},
{MAGNESIUM_MAX_FREQ, {
{0, {30, 30, true}},
{1, {30, 29, true}},
{2, {30, 28, true}},
{3, {30, 27, true}},
{4, {30, 26, true}},
{5, {30, 25, true}},
{6, {30, 24, true}},
{7, {30, 23, true}},
{8, {30, 22, true}},
{9, {30, 21, true}},
{10, {30, 20, true}},
{11, {30, 19, true}},
{12, {30, 18, true}},
{13, {30, 17, true}},
{14, {30, 16, true}},
{15, {30, 15, true}},
{16, {29, 15, true}},
{17, {28, 15, true}},
{18, {27, 15, true}},
{19, {26, 15, true}},
{20, {25, 15, true}},
{21, {24, 15, true}},
{22, {23, 15, true}},
{23, {22, 15, true}},
{24, {21, 15, true}},
{25, {20, 15, true}},
{26, {19, 15, true}},
{27, {18, 15, true}},
{28, {17, 15, true}},
{29, {16, 15, true}},
{30, {15, 15, true}},
{31, {15, 14, true}},
{32, {15, 13, true}},
{33, {15, 12, true}},
{34, {15, 11, true}},
{35, {15, 10, true}},
{36, {14, 10, true}},
{37, {13, 10, true}},
{38, {12, 10, true}},
{39, {11, 10, true}},
{40, {10, 10, true}},
{41, {9, 10, true}},
{42, {8, 10, true}},
{43, {7, 10, true}},
{44, {6, 10, true}},
{45, {5, 10, true}},
{46, {4, 10, true}},
{47, {3, 10, true}},
{48, {2, 10, true}},
{49, {1, 10, true}},
{50, {15, 15, false}},
{51, {15, 14, false}},
{52, {15, 13, false}},
{53, {15, 12, false}},
{54, {15, 11, false}},
{55, {15, 10, false}},
{56, {14, 10, false}},
{57, {13, 10, false}},
{58, {12, 10, false}},
{59, {11, 10, false}},
{60, {10, 10, false}},
{61, {10, 9, false}},
{62, {10, 8, false}},
{63, {10, 7, false}},
{64, {10, 6, false}},
{65, {10, 5, false}},
{66, {9, 5, false}},
{67, {8, 5, false}},
{68, {7, 5, false}},
{69, {6, 5, false}},
{70, {5, 5, false}},
{71, {5, 4, false}},
{72, {5, 3, false}},
{73, {5, 2, false}},
{74, {5, 1, false}},
{75, {5, 0, false}}
},
}
}; /* rx_gain_tables */
const gain_tables_t tx_gain_tables = {
{MAGNESIUM_LOWBAND_FREQ, {
// Gain, DSA att, Myk att, bypass
{0, {30, 20, true}},
{1, {29, 20, true}},
{2, {28, 20, true}},
{3, {27, 20, true}},
{4, {26, 20, true}},
{5, {25, 20, true}},
{6, {24, 20, true}},
{7, {23, 20, true}},
{8, {22, 20, true}},
{9, {21, 20, true}},
{10, {20, 20, true}},
{11, {19, 20, true}},
{12, {18, 20, true}},
{13, {17, 20, true}},
{14, {16, 20, true}},
{15, {15, 20, true}},
{16, {14, 20, true}},
{17, {13, 20, true}},
{18, {12, 20, true}},
{19, {11, 20, true}},
{20, {10, 20, true}},
{21, {9, 20, true}},
{22, {8, 20, true}},
{23, {7, 20, true}},
{24, {6, 20, true}},
{25, {5, 20, true}},
{26, {4, 20, true}},
{27, {3, 20, true}},
{28, {2, 20, true}},
{29, {1, 20, true}},
{30, {0, 20, true}},
{31, {0, 19, true}},
{32, {0, 18, true}},
{33, {0, 17, true}},
{34, {0, 16, true}},
{35, {0, 15, true}},
{36, {0, 14, true}},
{37, {0, 13, true}},
{38, {0, 12, true}},
{39, {0, 11, true}},
{40, {10, 15, false}},
{41, {9, 15, false}},
{42, {8, 15, false}},
{43, {7, 15, false}},
{44, {6, 15, false}},
{45, {5, 15, false}},
{46, {4, 15, false}},
{47, {3, 15, false}},
{48, {2, 15, false}},
{49, {1, 15, false}},
{50, {0, 15, false}},
{51, {0, 14, false}},
{52, {0, 13, false}},
{53, {0, 12, false}},
{54, {0, 11, false}},
{55, {0, 10, false}},
{56, {0, 9, false}},
{57, {0, 8, false}},
{58, {0, 7, false}},
{59, {0, 6, false}},
{60, {0, 5, false}},
{61, {0, 4, false}},
{62, {0, 3, false}},
{63, {0, 2, false}},
{64, {0, 1, false}},
{65, {0, 0, false}}
}},
{6e9, {
{0, {30, 20, true}},
{1, {29, 20, true}},
{2, {28, 20, true}},
{3, {27, 20, true}},
{4, {26, 20, true}},
{5, {25, 20, true}},
{6, {24, 20, true}},
{7, {23, 20, true}},
{8, {22, 20, true}},
{9, {21, 20, true}},
{10, {20, 20, true}},
{11, {19, 20, true}},
{12, {18, 20, true}},
{13, {17, 20, true}},
{14, {16, 20, true}},
{15, {15, 20, true}},
{16, {14, 20, true}},
{17, {13, 20, true}},
{18, {12, 20, true}},
{19, {11, 20, true}},
{20, {10, 20, true}},
{21, {9, 20, true}},
{22, {8, 20, true}},
{23, {7, 20, true}},
{24, {6, 20, true}},
{25, {5, 20, true}},
{26, {4, 20, true}},
{27, {3, 20, true}},
{28, {2, 20, true}},
{29, {1, 20, true}},
{30, {0, 20, true}},
{31, {0, 19, true}},
{32, {0, 18, true}},
{33, {0, 17, true}},
{34, {0, 16, true}},
{35, {5, 20, false}},
{36, {4, 20, false}},
{37, {3, 20, false}},
{38, {2, 20, false}},
{39, {1, 20, false}},
{40, {0, 20, false}},
{41, {0, 19, false}},
{42, {0, 18, false}},
{43, {0, 17, false}},
{44, {0, 16, false}},
{45, {0, 15, false}},
{46, {0, 14, false}},
{47, {0, 13, false}},
{48, {0, 12, false}},
{49, {0, 11, false}},
{50, {0, 10, false}},
{51, {0, 9, false}},
{52, {0, 8, false}},
{53, {0, 7, false}},
{54, {0, 6, false}},
{55, {0, 5, false}},
{56, {0, 4, false}},
{57, {0, 3, false}},
{58, {0, 2, false}},
{59, {0, 1, false}},
{60, {0, 0, false}},
// Rest is fake to keep same gain range as low band
{61, {0, 0, false}},
{62, {0, 0, false}},
{63, {0, 0, false}},
{64, {0, 0, false}},
{65, {0, 0, false}}
}}
}; /* tx_gain_tables */
} /* namespace ANON */
gain_tuple_t magnesium::get_gain_tuple(
const double gain_index,
const double freq,
const uhd::direction_t dir
) {
UHD_ASSERT_THROW(dir == RX_DIRECTION or dir == TX_DIRECTION);
if (dir == RX_DIRECTION) {
UHD_ASSERT_THROW(
gain_index <= ALL_RX_MAX_GAIN and gain_index >= ALL_RX_MIN_GAIN
);
} else {
UHD_ASSERT_THROW(
gain_index <= ALL_TX_MAX_GAIN and gain_index >= ALL_TX_MIN_GAIN
);
}
auto &gain_table = (dir == RX_DIRECTION) ?
rx_gain_tables :
tx_gain_tables;
for (const auto &gain_map : gain_table) {
// First, find appropriate gain map for this frequency
if (gain_map.first >= freq) {
int gain_index_truncd = int(gain_index);
// Here, we hardcode the half-dB steps. We soak up all half-dB
// steps by twiddling the AD9371 attenuation, but we need to make
// sure we don't make it negative.
gain_tuple_t gain_tuple = gain_map.second.at(gain_index_truncd);
if (gain_index - double(gain_index_truncd) >= .5) {
gain_tuple.ad9371_att =
std::max(0.0, gain_tuple.ad9371_att - .5);
}
return gain_tuple;
}
}
UHD_THROW_INVALID_CODE_PATH();
}
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