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