/* Copyright 2023 Dual Tachyon * https://github.com/DualTachyon * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "frequencies.h" #include "misc.h" #include "settings.h" // the BK4819 has 2 bands it covers, 18MHz ~ 630MHz and 760MHz ~ 1300MHz const freq_band_table_t BX4819_band1 = { 1800000, 63000000}; const freq_band_table_t BX4819_band2 = {84000000, 130000000}; const freq_band_table_t frequencyBandTable[7] = { #ifndef ENABLE_WIDE_RX // QS original {.lower = 5000000, .upper = 7600000}, {.lower = 10800000, .upper = 13700000}, {.lower = 13700000, .upper = 17400000}, {.lower = 17400000, .upper = 35000000}, {.lower = 35000000, .upper = 40000000}, {.lower = 40000000, .upper = 47000000}, {.lower = 47000000, .upper = 60000000} #else // extended range {.lower = BX4819_band1.lower, .upper = 10800000}, {.lower = 10800000, .upper = 13700000}, {.lower = 13700000, .upper = 17400000}, {.lower = 17400000, .upper = 35000000}, {.lower = 35000000, .upper = 40000000}, {.lower = 40000000, .upper = 47000000}, {.lower = 47000000, .upper = BX4819_band2.upper} #endif }; #ifdef ENABLE_NOAA const uint32_t NoaaFrequencyTable[10] = { 16255000, 16240000, 16247500, 16242500, 16245000, 16250000, 16252500, 16152500, 16177500, 16327500 }; #endif const uint16_t gStepFrequencyTable[] = { 250, 500, 625, 1000, 1250, 2500, 833, 1, 5, 10, 25, 50, 100, 125, 1500, 3000, 5000, 10000, 12500, 25000, 50000 }; const uint8_t StepMatchedIndexes[] = { STEP_2_5kHz, STEP_5kHz, STEP_6_25kHz, STEP_10kHz, STEP_12_5kHz, STEP_25kHz, STEP_8_33kHz, STEP_0_01kHz, STEP_0_05kHz, STEP_0_1kHz, STEP_0_25kHz, STEP_0_5kHz, STEP_1kHz, STEP_1_25kHz, STEP_15kHz, STEP_30kHz, STEP_50kHz, STEP_100kHz, STEP_125kHz, STEP_250kHz, STEP_500kHz }; const uint8_t StepSortedIndexes[] = { 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, STEP_8_33kHz, STEP_10kHz, STEP_12_5kHz, STEP_15kHz, STEP_25kHz, STEP_30kHz, STEP_50kHz, STEP_100kHz, STEP_125kHz, STEP_250kHz, STEP_500kHz }; uint8_t FREQUENCY_GetStepIdxFromSortedIdx(uint8_t sortedIdx) { return StepSortedIndexes[sortedIdx]; } uint8_t FREQUENCY_GetSortedIdxFromStepIdx(uint8_t stepIdx) { for(uint8_t i = 0; i < ARRAY_SIZE(gStepFrequencyTable); i++) if(StepSortedIndexes[i] == stepIdx) return i; return 0; } uint8_t FREQUENCY_GetStepIdxFromStepFrequency(uint16_t stepFrequency) { for(uint8_t i = 0; i < ARRAY_SIZE(gStepFrequencyTable); i++) if(gStepFrequencyTable[i] == stepFrequency) return StepMatchedIndexes[i]; return 0; } FREQUENCY_Band_t FREQUENCY_GetBand(uint32_t Frequency) { int band; for (band = ARRAY_SIZE(frequencyBandTable) - 1; band >= 0; band--) if (Frequency >= frequencyBandTable[band].lower) // if (Frequency < frequencyBandTable[band].upper) return (FREQUENCY_Band_t)band; return BAND1_50MHz; // return BAND_NONE; } 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) { if (Frequency <= LowerLimit) return TxpLow; if (UpperLimit <= Frequency) return TxpHigh; if (Frequency <= Middle) { TxpMid += ((TxpMid - TxpLow) * (Frequency - LowerLimit)) / (Middle - LowerLimit); return TxpMid; } TxpMid += ((TxpHigh - TxpMid) * (Frequency - Middle)) / (UpperLimit - Middle); return TxpMid; } uint32_t FREQUENCY_RoundToStep(uint32_t freq, uint16_t step) { if(step == 833) { uint32_t base = freq/2500*2500; int chno = (freq - base) / 700; // convert entered aviation 8.33Khz channel number scheme to actual frequency. return base + (chno * 833) + (chno == 3); } if(step == 1) return freq; return (freq + (step + 1) / 2) / step * step; } int TX_freq_check(const uint32_t Frequency) { // return '0' if TX frequency is allowed // otherwise return '-1' if (Frequency < frequencyBandTable[0].lower || Frequency > frequencyBandTable[ARRAY_SIZE(frequencyBandTable) - 1].upper) return -1; // not allowed outside this range if (Frequency >= BX4819_band1.upper && Frequency < BX4819_band2.lower) return -1; // BX chip does not work in this range switch (gSetting_F_LOCK) { case F_LOCK_DEF: if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < frequencyBandTable[BAND3_137MHz].upper) return 0; if (Frequency >= frequencyBandTable[BAND4_174MHz].lower && Frequency < frequencyBandTable[BAND4_174MHz].upper) if (gSetting_200TX) return 0; if (Frequency >= frequencyBandTable[BAND5_350MHz].lower && Frequency < frequencyBandTable[BAND5_350MHz].upper) if (gSetting_350TX && gSetting_350EN) return 0; if (Frequency >= frequencyBandTable[BAND6_400MHz].lower && Frequency < frequencyBandTable[BAND6_400MHz].upper) return 0; if (Frequency >= frequencyBandTable[BAND7_470MHz].lower && Frequency <= 60000000) if (gSetting_500TX) return 0; break; case F_LOCK_FCC: if (Frequency >= 14400000 && Frequency < 14800000) return 0; if (Frequency >= 42000000 && Frequency < 45000000) return 0; break; case F_LOCK_CE: if (Frequency >= 14400000 && Frequency < 14600000) return 0; if (Frequency >= 43000000 && Frequency < 44000000) return 0; break; case F_LOCK_GB: if (Frequency >= 14400000 && Frequency < 14800000) return 0; if (Frequency >= 43000000 && Frequency < 44000000) return 0; break; case F_LOCK_430: if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < 17400000) return 0; if (Frequency >= 40000000 && Frequency < 43000000) return 0; break; case F_LOCK_438: if (Frequency >= frequencyBandTable[BAND3_137MHz].lower && Frequency < 17400000) return 0; if (Frequency >= 40000000 && Frequency < 43800000) return 0; break; case F_LOCK_ALL: break; } // dis-allowed TX frequency return -1; } int RX_freq_check(const uint32_t Frequency) { // return '0' if RX frequency is allowed // otherwise return '-1' if (Frequency < RX_freq_min() || Frequency > frequencyBandTable[ARRAY_SIZE(frequencyBandTable) - 1].upper) return -1; if (Frequency >= BX4819_band1.upper && Frequency < BX4819_band2.lower) return -1; return 0; // OK frequency } uint32_t RX_freq_min() { return gEeprom.RX_OFFSET >= frequencyBandTable[0].lower ? 0 : frequencyBandTable[0].lower - gEeprom.RX_OFFSET; } uint32_t Band_freq_min(FREQUENCY_Band_t Band) { return gEeprom.RX_OFFSET >= frequencyBandTable[Band].lower ? 0 : frequencyBandTable[Band].lower - gEeprom.RX_OFFSET; }