155 lines
4.7 KiB
C
155 lines
4.7 KiB
C
/*
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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 <max2837.h>
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#include <sgpio.h>
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#include <operacake.h>
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#define FREQ_ONE_MHZ (1000*1000)
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#define MIN_LP_FREQ_MHZ (0)
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#define MAX_LP_FREQ_MHZ (2150)
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#define MIN_BYPASS_FREQ_MHZ (2150)
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#define MAX_BYPASS_FREQ_MHZ (2750)
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#define MIN_HP_FREQ_MHZ (2750)
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#define MID1_HP_FREQ_MHZ (3600)
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#define MID2_HP_FREQ_MHZ (5100)
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#define MAX_HP_FREQ_MHZ (7250)
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#define MIN_LO_FREQ_HZ (84375000)
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#define MAX_LO_FREQ_HZ (5400000000ULL)
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static uint32_t max2837_freq_nominal_hz=2560000000;
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uint64_t freq_cache = 100000000;
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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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uint32_t mixer_freq_mhz;
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uint32_t MAX2837_freq_hz;
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uint64_t real_mixer_freq_hz;
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const uint32_t freq_mhz = freq / 1000000;
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const uint32_t freq_hz = freq % 1000000;
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success = true;
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const max2837_mode_t prior_max2837_mode = max2837_mode(&max2837);
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max2837_set_mode(&max2837, MAX2837_MODE_STANDBY);
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if(freq_mhz < MAX_LP_FREQ_MHZ)
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{
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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 = 2300000000;
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#else
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/* IF is graduated from 2650 MHz to 2343 MHz */
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max2837_freq_nominal_hz = 2650000000 - (freq / 7);
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#endif
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mixer_freq_mhz = (max2837_freq_nominal_hz / FREQ_ONE_MHZ) + freq_mhz;
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/* Set Freq and read real freq */
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_mhz);
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max2837_set_frequency(&max2837, real_mixer_freq_hz - freq);
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sgpio_cpld_stream_rx_set_q_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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{
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rf_path_set_filter(&rf_path, RF_PATH_FILTER_BYPASS);
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MAX2837_freq_hz = (freq_mhz * FREQ_ONE_MHZ) + freq_hz;
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/* mixer_freq_mhz <= not used in Bypass mode */
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max2837_set_frequency(&max2837, MAX2837_freq_hz);
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sgpio_cpld_stream_rx_set_q_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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{
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if (freq_mhz < MID1_HP_FREQ_MHZ) {
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/* IF is graduated from 2150 MHz to 2750 MHz */
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max2837_freq_nominal_hz = 2150000000 + (((freq - 2750000000) * 60) / 85);
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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 = 2350000000 + ((freq - 3600000000) / 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 = 2500000000 + ((freq - 5100000000) / 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_mhz = freq_mhz - (max2837_freq_nominal_hz / FREQ_ONE_MHZ);
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/* Set Freq and read real freq */
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real_mixer_freq_hz = mixer_set_frequency(&mixer, mixer_freq_mhz);
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max2837_set_frequency(&max2837, freq - real_mixer_freq_hz);
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sgpio_cpld_stream_rx_set_q_invert(&sgpio_config, 0);
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}else
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{
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/* Error freq_mhz too high */
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success = false;
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}
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max2837_set_mode(&max2837, prior_max2837_mode);
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if( success ) {
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freq_cache = freq;
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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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bool set_freq_explicit(const uint64_t if_freq_hz, 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)MIN_BYPASS_FREQ_MHZ * FREQ_ONE_MHZ))
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|| (if_freq_hz > ((uint64_t)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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max2837_set_frequency(&max2837, if_freq_hz);
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if (lo_freq_hz > if_freq_hz) {
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sgpio_cpld_stream_rx_set_q_invert(&sgpio_config, 1);
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} else {
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sgpio_cpld_stream_rx_set_q_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 / FREQ_ONE_MHZ);
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}
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return true;
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}
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