mirror of
https://github.com/greatscottgadgets/hackrf.git
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241 lines
7.2 KiB
C
241 lines
7.2 KiB
C
/*
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* Copyright 2012-2022 Great Scott Gadgets <info@greatscottgadgets.com>
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* Copyright 2012 Jared Boone
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* Copyright 2013 Benjamin Vernoux
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "tuning.h"
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#include "hackrf_ui.h"
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#include "hackrf_core.h"
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#include "mixer.h"
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#include "max2831.h"
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#include "max2837.h"
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#include "max2839.h"
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#include "sgpio.h"
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#include "operacake.h"
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#include "platform_detect.h"
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#ifndef PRALINE
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#define MIN_LP_FREQ_MHZ (0)
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#define MAX_LP_FREQ_MHZ (2170ULL)
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#define ABS_MIN_BYPASS_FREQ_MHZ (2000ULL)
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#define MIN_BYPASS_FREQ_MHZ (MAX_LP_FREQ_MHZ)
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#define MAX_BYPASS_FREQ_MHZ (2740ULL)
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#define ABS_MAX_BYPASS_FREQ_MHZ (3000ULL)
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#define MIN_HP_FREQ_MHZ (MAX_BYPASS_FREQ_MHZ)
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#define MID1_HP_FREQ_MHZ (3600ULL)
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#define MID2_HP_FREQ_MHZ (5100ULL)
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#define MAX_HP_FREQ_MHZ (7250ULL)
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#define MIN_LO_FREQ_HZ (84375000ULL)
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#define MAX_LO_FREQ_HZ (5400000000ULL)
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#else
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#define MIN_LP_FREQ_MHZ (0)
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#define MAX_LP_FREQ_MHZ (2320ULL)
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#define ABS_MIN_BYPASS_FREQ_MHZ (2000ULL)
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#define MIN_BYPASS_FREQ_MHZ (MAX_LP_FREQ_MHZ)
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#define MAX_BYPASS_FREQ_MHZ (2580ULL)
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#define ABS_MAX_BYPASS_FREQ_MHZ (3000ULL)
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#define MIN_HP_FREQ_MHZ (MAX_BYPASS_FREQ_MHZ)
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#define MAX_HP_FREQ_MHZ (7250ULL)
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#define MIN_LO_FREQ_HZ (84375000ULL)
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#define MAX_LO_FREQ_HZ (5400000000ULL)
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#endif
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#ifndef PRALINE
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static uint32_t max2837_freq_nominal_hz = 2560000000;
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/*
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* Set freq/tuning between 0MHz to 7250 MHz (less than 16bits really used)
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* hz between 0 to 999999 Hz (not checked)
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* return false on error or true if success.
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*/
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bool set_freq(const uint64_t freq)
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{
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bool success;
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uint64_t mixer_freq_hz;
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uint64_t real_mixer_freq_hz;
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const uint32_t freq_mhz = freq / FREQ_ONE_MHZ;
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success = true;
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max283x_mode_t prior_max283x_mode = max283x_mode(&max283x);
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max283x_set_mode(&max283x, MAX283x_MODE_STANDBY);
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if (freq_mhz < MAX_LP_FREQ_MHZ) {
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_LOW_PASS);
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#ifdef RAD1O
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max2837_freq_nominal_hz = 2300 * FREQ_ONE_MHZ;
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#else
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/* IF is graduated from 2650 MHz to 2340 MHz */
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max2837_freq_nominal_hz = (2650 * FREQ_ONE_MHZ) - (freq / 7);
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#endif
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mixer_freq_hz = max2837_freq_nominal_hz + freq;
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/* Set Freq and read real freq */
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_hz);
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max283x_set_frequency(&max283x, real_mixer_freq_hz - freq);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 1);
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} else if ((freq_mhz >= MIN_BYPASS_FREQ_MHZ) && (freq_mhz < MAX_BYPASS_FREQ_MHZ)) {
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_BYPASS);
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/* mixer_freq_mhz <= not used in Bypass mode */
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max283x_set_frequency(&max283x, freq);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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} else if ((freq_mhz >= MIN_HP_FREQ_MHZ) && (freq_mhz <= MAX_HP_FREQ_MHZ)) {
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if (freq_mhz < MID1_HP_FREQ_MHZ) {
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/* IF is graduated from 2170 MHz to 2740 MHz */
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max2837_freq_nominal_hz = (MIN_BYPASS_FREQ_MHZ * FREQ_ONE_MHZ) +
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(((freq - (MAX_BYPASS_FREQ_MHZ * FREQ_ONE_MHZ)) * 57) /
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86);
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} else if (freq_mhz < MID2_HP_FREQ_MHZ) {
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/* IF is graduated from 2350 MHz to 2650 MHz */
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max2837_freq_nominal_hz = (2350 * FREQ_ONE_MHZ) +
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((freq - (MID1_HP_FREQ_MHZ * FREQ_ONE_MHZ)) / 5);
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} else {
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/* IF is graduated from 2500 MHz to 2738 MHz */
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max2837_freq_nominal_hz = (2500 * FREQ_ONE_MHZ) +
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((freq - (MID2_HP_FREQ_MHZ * FREQ_ONE_MHZ)) / 9);
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}
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_HIGH_PASS);
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mixer_freq_hz = freq - max2837_freq_nominal_hz;
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/* Set Freq and read real freq */
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_hz);
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max283x_set_frequency(&max283x, freq - real_mixer_freq_hz);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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} else {
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/* Error freq_mhz too high */
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success = false;
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}
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max283x_set_mode(&max283x, prior_max283x_mode);
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if (success) {
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hackrf_ui()->set_frequency(freq);
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#ifdef HACKRF_ONE
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operacake_set_range(freq_mhz);
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#endif
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}
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return success;
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}
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#else
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bool tuning_set_frequency(
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const tune_config_t* cfg,
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const uint64_t freq,
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const uint32_t offset)
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{
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uint64_t mixer_freq_hz;
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uint64_t real_mixer_freq_hz;
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if (freq > (MAX_HP_FREQ_MHZ * FREQ_ONE_MHZ)) {
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return false;
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}
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const uint16_t freq_mhz = freq / FREQ_ONE_MHZ;
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uint64_t rf = freq;
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if (cfg->shift == FPGA_QUARTER_SHIFT_MODE_DOWN) {
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if (offset > rf) {
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rf = offset - rf;
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} else {
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rf = rf - offset;
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}
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} else if (cfg->shift == FPGA_QUARTER_SHIFT_MODE_UP) {
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rf = rf + offset;
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}
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max2831_mode_t prior_max2831_mode = max2831_mode(&max283x);
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max2831_set_mode(&max283x, MAX2831_MODE_STANDBY);
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if (cfg->if_mhz == 0) {
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_BYPASS);
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max2831_set_frequency(&max283x, rf);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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} else if (cfg->if_mhz > freq_mhz) {
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_LOW_PASS);
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if (cfg->high_lo) {
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mixer_freq_hz = FREQ_ONE_MHZ * cfg->if_mhz + rf;
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_hz);
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max2831_set_frequency(&max283x, real_mixer_freq_hz - rf);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 1);
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} else {
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mixer_freq_hz = FREQ_ONE_MHZ * cfg->if_mhz - rf;
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_hz);
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max2831_set_frequency(&max283x, real_mixer_freq_hz + rf);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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}
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} else {
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_HIGH_PASS);
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mixer_freq_hz = rf - FREQ_ONE_MHZ * cfg->if_mhz;
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_hz);
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max2831_set_frequency(&max283x, rf - real_mixer_freq_hz);
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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}
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max2831_set_mode(&max283x, prior_max2831_mode);
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hackrf_ui()->set_frequency(freq);
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operacake_set_range(freq_mhz);
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return true;
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}
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#endif
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bool set_freq_explicit(
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const uint64_t if_freq_hz,
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const uint64_t lo_freq_hz,
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const rf_path_filter_t path)
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{
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if ((if_freq_hz < ((uint64_t) ABS_MIN_BYPASS_FREQ_MHZ * FREQ_ONE_MHZ)) ||
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(if_freq_hz > ((uint64_t) ABS_MAX_BYPASS_FREQ_MHZ * FREQ_ONE_MHZ))) {
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return false;
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}
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if ((path != RF_PATH_FILTER_BYPASS) &&
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((lo_freq_hz < MIN_LO_FREQ_HZ) || (lo_freq_hz > MAX_LO_FREQ_HZ))) {
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return false;
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}
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if (path > 2) {
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return false;
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}
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rf_path_set_filter(&rf_path, path);
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#ifdef PRALINE
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max2831_set_frequency(&max283x, if_freq_hz);
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#else
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max283x_set_frequency(&max283x, if_freq_hz);
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#endif
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if (lo_freq_hz > if_freq_hz) {
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sgpio_cpld_set_mixer_invert(&sgpio_config, 1);
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} else {
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sgpio_cpld_set_mixer_invert(&sgpio_config, 0);
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}
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if (path != RF_PATH_FILTER_BYPASS) {
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(void) mixer_set_frequency(&mixer, lo_freq_hz);
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}
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return true;
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}
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