244 lines
8.3 KiB
C
244 lines
8.3 KiB
C
/* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "frequencies.h"
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#include "misc.h"
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#include "settings.h"
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#include <assert.h>
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// the BK4819 has 2 bands it covers, 18MHz(Some BK4819 chips can go down to 15MHz. It's mostly up to binning) ~ 630MHz and 760MHz ~ 1300MHz
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#define BX4819_band1_lower 1500000
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#define BX4819_band2_upper 130000000
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const freq_band_table_t BX4819_band1 = {BX4819_band1_lower, 63000000};
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const freq_band_table_t BX4819_band2 = {76000000, BX4819_band2_upper};
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const freq_band_table_t frequencyBandTable[] =
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{
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#ifndef ENABLE_WIDE_RX
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// QS original
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[BAND1_50MHz ]={.lower = 5000000, .upper = 7600000},
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[BAND7_470MHz]={.lower = 47000000, .upper = 60000000},
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#else
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// extended range
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[BAND1_50MHz ]={.lower = BX4819_band1_lower, .upper = 10800000},
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[BAND7_470MHz]={.lower = 47000000, .upper = BX4819_band2_upper},
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#endif
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[BAND2_108MHz]={.lower = 10800000, .upper = 13700000},
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[BAND3_137MHz]={.lower = 13700000, .upper = 17400000},
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[BAND4_174MHz]={.lower = 17400000, .upper = 35000000},
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[BAND5_350MHz]={.lower = 35000000, .upper = 40000000},
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[BAND6_400MHz]={.lower = 40000000, .upper = 47000000}
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};
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#ifdef ENABLE_NOAA
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const uint32_t NoaaFrequencyTable[10] =
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{
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16255000,
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16240000,
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16247500,
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16242500,
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16245000,
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16250000,
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16252500,
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16152500,
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16177500,
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16327500
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};
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#endif
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// this order of steps has to be preserved for backwards compatibility with other/stock firmwares
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const uint16_t gStepFrequencyTable[] = {
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// standard steps
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[STEP_2_5kHz] = 250,
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[STEP_5kHz] = 500,
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[STEP_6_25kHz] = 625,
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[STEP_10kHz] = 1000,
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[STEP_12_5kHz] = 1250,
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[STEP_25kHz] = 2500,
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[STEP_8_33kHz] = 833,
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// custom steps
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[STEP_0_01kHz] = 1,
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[STEP_0_05kHz] = 5,
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[STEP_0_1kHz] = 10,
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[STEP_0_25kHz] = 25,
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[STEP_0_5kHz] = 50,
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[STEP_1kHz] = 100,
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[STEP_1_25kHz] = 125,
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[STEP_9kHz] = 900,
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[STEP_15kHz] = 1500,
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[STEP_20kHz] = 2000,
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[STEP_30kHz] = 3000,
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[STEP_50kHz] = 5000,
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[STEP_100kHz] = 10000,
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[STEP_125kHz] = 12500,
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[STEP_200kHz] = 20000,
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[STEP_250kHz] = 25000,
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[STEP_500kHz] = 50000
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};
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const STEP_Setting_t StepSortedIndexes[] = {
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STEP_0_01kHz, STEP_0_05kHz, STEP_0_1kHz, STEP_0_25kHz, STEP_0_5kHz, STEP_1kHz, STEP_1_25kHz, STEP_2_5kHz, STEP_5kHz, STEP_6_25kHz,
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STEP_8_33kHz, STEP_9kHz, STEP_10kHz, STEP_12_5kHz, STEP_15kHz, STEP_20kHz, STEP_25kHz, STEP_30kHz, STEP_50kHz, STEP_100kHz,
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STEP_125kHz, STEP_200kHz, STEP_250kHz, STEP_500kHz
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};
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STEP_Setting_t FREQUENCY_GetStepIdxFromSortedIdx(uint8_t sortedIdx)
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{
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return StepSortedIndexes[sortedIdx];
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}
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uint32_t FREQUENCY_GetSortedIdxFromStepIdx(uint8_t stepIdx)
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{
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for(uint8_t i = 0; i < ARRAY_SIZE(gStepFrequencyTable); i++)
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if(StepSortedIndexes[i] == stepIdx)
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return i;
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return 0;
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}
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static_assert(ARRAY_SIZE(gStepFrequencyTable) == STEP_N_ELEM);
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FREQUENCY_Band_t FREQUENCY_GetBand(uint32_t Frequency)
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{
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for (int32_t band = BAND_N_ELEM - 1; band >= 0; band--)
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if (Frequency >= frequencyBandTable[band].lower)
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return (FREQUENCY_Band_t)band;
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return BAND1_50MHz;
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}
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uint8_t FREQUENCY_CalculateOutputPower(uint8_t TxpLow, uint8_t TxpMid, uint8_t TxpHigh, int32_t LowerLimit, int32_t Middle, int32_t UpperLimit, int32_t Frequency)
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{
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if (Frequency <= LowerLimit)
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return TxpLow;
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if (UpperLimit <= Frequency)
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return TxpHigh;
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if (Frequency <= Middle)
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{
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TxpMid += ((TxpMid - TxpLow) * (Frequency - LowerLimit)) / (Middle - LowerLimit);
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return TxpMid;
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}
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TxpMid += ((TxpHigh - TxpMid) * (Frequency - Middle)) / (UpperLimit - Middle);
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return TxpMid;
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}
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uint32_t FREQUENCY_RoundToStep(uint32_t freq, uint16_t step)
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{
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if(step == 833) {
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uint32_t base = freq/2500*2500;
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int chno = (freq - base) / 700; // convert entered aviation 8.33Khz channel number scheme to actual frequency.
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return base + (chno * 833) + (chno == 3);
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}
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if(step == 1)
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return freq;
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if(step >= 1000)
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step = step/2;
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return (freq + (step + 1) / 2) / step * step;
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}
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int32_t TX_freq_check(const uint32_t Frequency)
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{ // return '0' if TX frequency is allowed
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// otherwise return '-1'
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if (Frequency < frequencyBandTable[0].lower || Frequency > frequencyBandTable[BAND_N_ELEM - 1].upper)
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return 1; // not allowed outside this range
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if (Frequency >= BX4819_band1.upper && Frequency < BX4819_band2.lower)
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return -1; // BX chip does not work in this range
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switch (gSetting_F_LOCK)
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{
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case F_LOCK_DEF:
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if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < frequencyBandTable[BAND3_137MHz].upper)
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return 0;
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// if (Frequency >= frequencyBandTable[BAND4_174MHz].lower && Frequency < frequencyBandTable[BAND4_174MHz].upper)
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// if (gSetting_200TX)
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// return 0;
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// if (Frequency >= frequencyBandTable[BAND5_350MHz].lower && Frequency < frequencyBandTable[BAND5_350MHz].upper)
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// if (gSetting_350TX && gSetting_350EN)
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// return 0;
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if (Frequency >= frequencyBandTable[BAND6_400MHz].lower && Frequency < frequencyBandTable[BAND6_400MHz].upper)
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return 0;
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// if (Frequency >= frequencyBandTable[BAND7_470MHz].lower && Frequency <= 60000000)
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// if (gSetting_500TX)
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// return 0;
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break;
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case F_LOCK_FCC:
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if (Frequency >= 14400000 && Frequency < 14800000)
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return 0;
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if (Frequency >= 42000000 && Frequency < 45000000)
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return 0;
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break;
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case F_LOCK_CE:
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if (Frequency >= 14400000 && Frequency < 14600000)
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return 0;
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if (Frequency >= 43000000 && Frequency < 44000000)
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return 0;
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break;
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case F_LOCK_GB:
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if (Frequency >= 14400000 && Frequency < 14800000)
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return 0;
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if (Frequency >= 43000000 && Frequency < 44000000)
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return 0;
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break;
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case F_LOCK_430:
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if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < 17400000)
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return 0;
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if (Frequency >= 40000000 && Frequency < 43000000)
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return 0;
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break;
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case F_LOCK_438:
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if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < 17400000)
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return 0;
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if (Frequency >= 40000000 && Frequency < 43800000)
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return 0;
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break;
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case F_LOCK_ALL:
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break;
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case F_LOCK_NONE:
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for (uint32_t i = 0; i < ARRAY_SIZE(frequencyBandTable); i++)
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if (Frequency >= frequencyBandTable[i].lower && Frequency < frequencyBandTable[i].upper)
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return 0;
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break;
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}
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// dis-allowed TX frequency
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return -1;
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}
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int32_t RX_freq_check(const uint32_t Frequency)
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{ // return '0' if RX frequency is allowed
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// otherwise return '-1'
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if (Frequency < frequencyBandTable[0].lower || Frequency > frequencyBandTable[BAND_N_ELEM - 1].upper)
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return -1;
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if (Frequency >= BX4819_band1.upper && Frequency < BX4819_band2.lower)
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return -1;
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return 0; // OK frequency
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} |