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ardupilot/libraries/SRV_Channel/SRV_Channel_aux.cpp

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/*
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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
*/
/*
SRV_Channel_aux.cpp - handling of servo auxiliary functions
*/
#include "SRV_Channel.h"
#include <AP_Math/AP_Math.h>
#include <AP_HAL/AP_HAL.h>
#include <RC_Channel/RC_Channel.h>
#if NUM_SERVO_CHANNELS == 0
#pragma GCC diagnostic ignored "-Wtype-limits"
#endif
extern const AP_HAL::HAL& hal;
/// map a function to a servo channel and output it
void SRV_Channel::output_ch(void)
{
#ifndef HAL_BUILD_AP_PERIPH
int8_t passthrough_from = -1;
bool passthrough_mapped = false;
// take care of special function cases
switch(function.get())
{
case k_manual: // manual
passthrough_from = ch_num;
break;
case k_rcin1 ... k_rcin16: // rc pass-thru
passthrough_from = int8_t((int16_t)function - k_rcin1);
break;
case k_rcin1_mapped ... k_rcin16_mapped:
passthrough_from = int8_t((int16_t)function - k_rcin1_mapped);
passthrough_mapped = true;
break;
}
if (passthrough_from != -1) {
// we are doing passthrough from input to output for this channel
RC_Channel *c = rc().channel(passthrough_from);
if (c) {
if (SRV_Channels::passthrough_disabled()) {
output_pwm = c->get_radio_trim();
} else {
// non-mapped rc passthrough
int16_t radio_in = c->get_radio_in();
if (passthrough_mapped) {
radio_in = pwm_from_angle(c->norm_input_dz() * 4500);
}
if (!ign_small_rcin_changes) {
output_pwm = radio_in;
previous_radio_in = radio_in;
} else {
// check if rc input value has changed by more than the deadzone
if (abs(radio_in - previous_radio_in) > c->get_dead_zone()) {
output_pwm = radio_in;
ign_small_rcin_changes = false;
}
}
}
}
}
#endif // HAL_BUILD_AP_PERIPH
if (!(SRV_Channels::disabled_mask & (1U<<ch_num))) {
hal.rcout->write(ch_num, output_pwm);
}
}
/*
call output_ch() on all channels
*/
void SRV_Channels::output_ch_all(void)
{
uint8_t max_chan = NUM_SERVO_CHANNELS;
#if NUM_SERVO_CHANNELS >= 17
if (_singleton != nullptr && _singleton->enable_32_channels.get() <= 0) {
max_chan = 16;
}
#endif
for (uint8_t i = 0; i < max_chan; i++) {
channels[i].output_ch();
}
}
/*
return the current function for a channel
*/
SRV_Channel::Aux_servo_function_t SRV_Channels::channel_function(uint8_t channel)
{
if (channel < NUM_SERVO_CHANNELS) {
return channels[channel].function;
}
return SRV_Channel::k_none;
}
/*
setup a channels aux servo function
*/
void SRV_Channel::aux_servo_function_setup(void)
{
if (type_setup) {
return;
}
switch (function.get()) {
case k_flap:
case k_flap_auto:
case k_egg_drop:
set_range(100);
break;
case k_heli_rsc:
case k_heli_tail_rsc:
case k_motor_tilt:
case k_boost_throttle:
case k_thrust_out:
set_range(1000);
break;
case k_aileron_with_input:
case k_elevator_with_input:
case k_aileron:
case k_elevator:
case k_dspoilerLeft1:
case k_dspoilerLeft2:
case k_dspoilerRight1:
case k_dspoilerRight2:
case k_rudder:
case k_steering:
case k_flaperon_left:
case k_flaperon_right:
case k_tiltMotorLeft:
case k_tiltMotorRight:
case k_tiltMotorRear:
case k_tiltMotorRearLeft:
case k_tiltMotorRearRight:
case k_elevon_left:
case k_elevon_right:
case k_vtail_left:
case k_vtail_right:
case k_scripting1:
case k_scripting2:
case k_scripting3:
case k_scripting4:
case k_scripting5:
case k_scripting6:
case k_scripting7:
case k_scripting8:
case k_scripting9:
case k_scripting10:
case k_scripting11:
case k_scripting12:
case k_scripting13:
case k_scripting14:
case k_scripting15:
case k_scripting16:
case k_roll_out:
case k_pitch_out:
case k_yaw_out:
case k_rcin1_mapped ... k_rcin16_mapped:
set_angle(4500);
break;
case k_throttle:
case k_throttleLeft:
case k_throttleRight:
case k_airbrake:
// fixed wing throttle
set_range(100);
break;
default:
break;
}
}
/// setup the output range types of all functions
void SRV_Channels::update_aux_servo_function(void)
{
if (!channels) {
return;
}
function_mask.clearall();
for (uint16_t i = 0; i < SRV_Channel::k_nr_aux_servo_functions; i++) {
functions[i].channel_mask = 0;
}
invalid_mask = 0;
// set auxiliary ranges
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (!channels[i].valid_function()) {
invalid_mask |= 1U<<i;
continue;
}
const uint16_t function = channels[i].function.get();
channels[i].aux_servo_function_setup();
function_mask.set(function);
functions[function].channel_mask |= 1U<<i;
}
initialised = true;
}
/// Should be called after the servo functions have been initialized
/// called at 1Hz
void SRV_Channels::enable_aux_servos()
{
hal.rcout->set_default_rate(uint16_t(_singleton->default_rate.get()));
update_aux_servo_function();
// enable all channels that are set to a valid function. This
// includes k_none servos, which allows those to get their initial
// trim value on startup
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
// see if it is a valid function
if (c.valid_function() && !(disabled_mask & (1U<<c.ch_num))) {
hal.rcout->enable_ch(c.ch_num);
} else {
hal.rcout->disable_ch(c.ch_num);
}
// output some servo functions before we fiddle with the
// parameter values:
if (c.function == SRV_Channel::k_min) {
c.set_output_pwm(c.servo_min);
c.output_ch();
} else if (c.function == SRV_Channel::k_trim) {
c.set_output_pwm(c.servo_trim);
c.output_ch();
} else if (c.function == SRV_Channel::k_max) {
c.set_output_pwm(c.servo_max);
c.output_ch();
}
}
// propagate channel masks to the ESCS
hal.rcout->update_channel_masks();
#if HAL_SUPPORT_RCOUT_SERIAL
blheli_ptr->update();
#endif
}
/*
for channels which have been marked as digital output then the
MIN/MAX/TRIM values have no meaning for controlling output, as
the HAL handles the scaling. We still need to cope with places
in the code that may try to set a PWM value however, so to
ensure consistency we force the MIN/MAX/TRIM to be consistent
across all digital channels. We use a MIN/MAX of 1000/2000, and
set TRIM to either 1000 or 1500 depending on whether the channel
is reversible
*/
void SRV_Channels::set_digital_outputs(uint32_t dig_mask, uint32_t rev_mask) {
digital_mask |= dig_mask;
reversible_mask |= rev_mask;
// add in NeoPixel and ProfiLED functions to digital array to determine anything else
// that should be disabled
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
switch (c.function.get()) {
case SRV_Channel::k_LED_neopixel1:
case SRV_Channel::k_LED_neopixel2:
case SRV_Channel::k_LED_neopixel3:
case SRV_Channel::k_LED_neopixel4:
case SRV_Channel::k_ProfiLED_1:
case SRV_Channel::k_ProfiLED_2:
case SRV_Channel::k_ProfiLED_3:
case SRV_Channel::k_ProfiLED_Clock:
dig_mask |= 1U<<c.ch_num;
break;
default:
break;
}
}
disabled_mask = hal.rcout->get_disabled_channels(dig_mask);
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (digital_mask & (1U<<i)) {
c.servo_min.set_and_default(1000);
c.servo_max.set_and_default(2000);
if (reversible_mask & (1U<<i)) {
c.servo_trim.set_and_default(1500);
} else {
c.servo_trim.set_and_default(1000);
}
}
}
}
/// enable output channels using a channel mask
void SRV_Channels::enable_by_mask(uint32_t mask)
{
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (mask & (1U<<i)) {
hal.rcout->enable_ch(i);
}
}
}
/*
set radio_out for all channels matching the given function type
*/
void SRV_Channels::set_output_pwm(SRV_Channel::Aux_servo_function_t function, uint16_t value)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].set_output_pwm(value);
channels[i].output_ch();
}
}
}
/*
set radio_out for all channels matching the given function type
trim the output assuming a 1500 center on the given value
reverses pwm output based on channel reversed property
*/
void
SRV_Channels::set_output_pwm_trimmed(SRV_Channel::Aux_servo_function_t function, int16_t value)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
int16_t value2;
if (channels[i].get_reversed()) {
value2 = 1500 - value + channels[i].get_trim();
} else {
value2 = value - 1500 + channels[i].get_trim();
}
channels[i].set_output_pwm(constrain_int16(value2,channels[i].get_output_min(),channels[i].get_output_max()));
channels[i].output_ch();
}
}
}
/*
set and save the trim value to current output for all channels matching
the given function type
*/
void
SRV_Channels::set_trim_to_servo_out_for(SRV_Channel::Aux_servo_function_t function)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].servo_trim.set_and_save_ifchanged(channels[i].get_output_pwm());
}
}
}
/*
copy radio_in to radio_out for a given function
*/
void
SRV_Channels::copy_radio_in_out(SRV_Channel::Aux_servo_function_t function, bool do_input_output)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
RC_Channel *c = rc().channel(channels[i].ch_num);
if (c == nullptr) {
continue;
}
channels[i].set_output_pwm(c->get_radio_in());
if (do_input_output) {
channels[i].output_ch();
}
}
}
}
/*
copy radio_in to radio_out for a channel mask
*/
void
SRV_Channels::copy_radio_in_out_mask(uint32_t mask)
{
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
if ((1U<<i) & mask) {
RC_Channel *c = rc().channel(channels[i].ch_num);
if (c == nullptr) {
continue;
}
channels[i].set_output_pwm(c->get_radio_in());
}
}
}
/*
setup failsafe value for an auxiliary function type to a Limit
*/
void
SRV_Channels::set_failsafe_pwm(SRV_Channel::Aux_servo_function_t function, uint16_t pwm)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
const SRV_Channel &c = channels[i];
if (c.function == function) {
hal.rcout->set_failsafe_pwm(1U<<c.ch_num, pwm);
}
}
}
/*
setup failsafe value for an auxiliary function type to a Limit
*/
void
SRV_Channels::set_failsafe_limit(SRV_Channel::Aux_servo_function_t function, SRV_Channel::Limit limit)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
const SRV_Channel &c = channels[i];
if (c.function == function) {
uint16_t pwm = c.get_limit_pwm(limit);
hal.rcout->set_failsafe_pwm(1U<<c.ch_num, pwm);
}
}
}
/*
set radio output value for an auxiliary function type to a Limit
*/
void
SRV_Channels::set_output_limit(SRV_Channel::Aux_servo_function_t function, SRV_Channel::Limit limit)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (c.function == function) {
uint16_t pwm = c.get_limit_pwm(limit);
c.set_output_pwm(pwm);
if (c.function == SRV_Channel::k_manual) {
RC_Channel *cin = rc().channel(c.ch_num);
if (cin != nullptr) {
// in order for output_ch() to work for k_manual we
// also have to override radio_in
cin->set_radio_in(pwm);
}
}
}
}
}
/*
return true if a particular function is assigned to at least one RC channel
*/
bool
SRV_Channels::function_assigned(SRV_Channel::Aux_servo_function_t function)
{
if (!initialised) {
update_aux_servo_function();
}
return function_mask.get(uint16_t(function));
}
/*
set servo_out and angle_min/max, then calc_pwm and output a
value. This is used to move a AP_Mount servo
*/
void
SRV_Channels::move_servo(SRV_Channel::Aux_servo_function_t function,
int16_t value, int16_t angle_min, int16_t angle_max)
{
if (!function_assigned(function)) {
return;
}
if (angle_max <= angle_min) {
return;
}
float v = float(value - angle_min) / float(angle_max - angle_min);
v = constrain_float(v, 0.0f, 1.0f);
for (uint8_t i = 0; i < NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (c.function == function) {
float v2 = c.get_reversed()? (1-v) : v;
uint16_t pwm = c.servo_min + v2 * (c.servo_max - c.servo_min);
c.set_output_pwm(pwm);
}
}
}
/*
set the default channel an auxiliary output function should be on
*/
bool SRV_Channels::set_aux_channel_default(SRV_Channel::Aux_servo_function_t function, uint8_t channel)
{
if (function_assigned(function)) {
// already assigned
return true;
}
if (channels[channel].function != SRV_Channel::k_none) {
if (channels[channel].function == function) {
return true;
}
hal.console->printf("Channel %u already assigned function %u\n",
(unsigned)(channel + 1),
(unsigned)channels[channel].function.get());
return false;
}
channels[channel].type_setup = false;
channels[channel].function.set_and_default(function);
channels[channel].aux_servo_function_setup();
function_mask.set((uint16_t)function);
if (SRV_Channel::valid_function(function)) {
functions[function].channel_mask |= 1U<<channel;
}
return true;
}
// find first channel that a function is assigned to
bool SRV_Channels::find_channel(SRV_Channel::Aux_servo_function_t function, uint8_t &chan)
{
if (!function_assigned(function)) {
return false;
}
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
chan = channels[i].ch_num;
return true;
}
}
return false;
}
/*
get a pointer to first auxiliary channel for a channel function
*/
SRV_Channel *SRV_Channels::get_channel_for(SRV_Channel::Aux_servo_function_t function, int8_t default_chan)
{
uint8_t chan;
if (default_chan >= 0) {
set_aux_channel_default(function, default_chan);
}
if (!find_channel(function, chan)) {
return nullptr;
}
return &channels[chan];
}
void SRV_Channels::set_output_scaled(SRV_Channel::Aux_servo_function_t function, float value)
{
if (SRV_Channel::valid_function(function)) {
functions[function].output_scaled = value;
SRV_Channel::have_pwm_mask &= ~functions[function].channel_mask;
}
}
float SRV_Channels::get_output_scaled(SRV_Channel::Aux_servo_function_t function)
{
if (SRV_Channel::valid_function(function)) {
return functions[function].output_scaled;
}
return 0;
}
// get slew limited scaled output for the given function type
float SRV_Channels::get_slew_limited_output_scaled(SRV_Channel::Aux_servo_function_t function)
{
if (!SRV_Channel::valid_function(function)) {
return 0.0;
}
for (slew_list *slew = _slew; slew; slew = slew->next) {
if (slew->func == function) {
if (!is_positive(slew->max_change)) {
// treat negative or zero slew rate as disabled
break;
}
return constrain_float(functions[function].output_scaled, slew->last_scaled_output - slew->max_change, slew->last_scaled_output + slew->max_change);
}
}
// no slew limiting
return functions[function].output_scaled;
}
/*
get mask of output channels for a function
*/
uint32_t SRV_Channels::get_output_channel_mask(SRV_Channel::Aux_servo_function_t function)
{
if (!initialised) {
update_aux_servo_function();
}
if (SRV_Channel::valid_function(function)) {
return functions[function].channel_mask;
}
return invalid_mask;
}
// set the trim for a function channel to given pwm
void SRV_Channels::set_trim_to_pwm_for(SRV_Channel::Aux_servo_function_t function, int16_t pwm)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].servo_trim.set_and_default(pwm);
}
}
}
// set the trim for a function channel to min output of the channel honnoring reverse unless ignore_reversed is true
void SRV_Channels::set_trim_to_min_for(SRV_Channel::Aux_servo_function_t function, bool ignore_reversed)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].servo_trim.set_and_default((channels[i].get_reversed() && !ignore_reversed)?channels[i].servo_max:channels[i].servo_min);
}
}
}
/*
set the default function for a channel
*/
void SRV_Channels::set_default_function(uint8_t chan, SRV_Channel::Aux_servo_function_t function)
{
if (chan < NUM_SERVO_CHANNELS) {
const SRV_Channel::Aux_servo_function_t old = channels[chan].function;
channels[chan].function.set_default(function);
if (old != channels[chan].function && channels[chan].function == function) {
function_mask.set((uint16_t)function);
}
}
}
void SRV_Channels::set_esc_scaling_for(SRV_Channel::Aux_servo_function_t function)
{
uint8_t chan;
if (find_channel(function, chan)) {
hal.rcout->set_esc_scaling(channels[chan].get_output_min(), channels[chan].get_output_max());
}
}
/*
auto-adjust channel trim from an integrator value. Positive v means
adjust trim up. Negative means decrease
*/
void SRV_Channels::adjust_trim(SRV_Channel::Aux_servo_function_t function, float v)
{
if (is_zero(v)) {
return;
}
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (function != c.function) {
continue;
}
float change = c.reversed?-v:v;
uint16_t new_trim = c.servo_trim;
if (c.servo_max <= c.servo_min) {
continue;
}
float trim_scaled = float(c.servo_trim - c.servo_min) / (c.servo_max - c.servo_min);
if (change > 0 && trim_scaled < 0.6f) {
new_trim++;
} else if (change < 0 && trim_scaled > 0.4f) {
new_trim--;
} else {
return;
}
c.servo_trim.set(new_trim);
trimmed_mask |= 1U<<i;
}
}
// get pwm output for the first channel of the given function type.
bool SRV_Channels::get_output_pwm(SRV_Channel::Aux_servo_function_t function, uint16_t &value)
{
uint8_t chan;
if (!find_channel(function, chan)) {
return false;
}
if (!SRV_Channel::valid_function(function)) {
return false;
}
channels[chan].calc_pwm(functions[function].output_scaled);
value = channels[chan].get_output_pwm();
return true;
}
// set output pwm to trim for the given function
void SRV_Channels::set_output_to_trim(SRV_Channel::Aux_servo_function_t function)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].set_output_pwm(channels[i].servo_trim);
}
}
}
/*
get the normalised output for a channel function from the pwm value
of the first matching channel
*/
float SRV_Channels::get_output_norm(SRV_Channel::Aux_servo_function_t function)
{
uint8_t chan;
if (!find_channel(function, chan)) {
return 0;
}
if (SRV_Channel::valid_function(function)) {
channels[chan].calc_pwm(functions[function].output_scaled);
}
return channels[chan].get_output_norm();
}
// set normalised output (-1 to 1 with 0 at mid point of servo_min/servo_max) for the given function
void SRV_Channels::set_output_norm(SRV_Channel::Aux_servo_function_t function, float value)
{
if (!function_assigned(function)) {
return;
}
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (c.function == function) {
c.set_output_norm(value);
}
}
}
/*
limit slew rate for an output function to given rate in percent per
second. This assumes output has not yet done to the hal
*/
void SRV_Channels::set_slew_rate(SRV_Channel::Aux_servo_function_t function, float slew_rate, uint16_t range, float dt)
{
if (!SRV_Channel::valid_function(function)) {
return;
}
const float max_change = range * slew_rate * 0.01 * dt;
for (slew_list *slew = _slew; slew; slew = slew->next) {
if (slew->func == function) {
// found existing item, update max change
slew->max_change = max_change;
return;
}
}
if (!is_positive(max_change)) {
// no point in adding a disabled slew limit
return;
}
// add new item
slew_list *new_slew = new slew_list(function);
if (new_slew == nullptr) {
return;
}
new_slew->last_scaled_output = functions[function].output_scaled;
new_slew->max_change = max_change;
new_slew->next = _slew;
_slew = new_slew;
}
// call set_angle() on matching channels
void SRV_Channels::set_angle(SRV_Channel::Aux_servo_function_t function, uint16_t angle)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].set_angle(angle);
}
}
}
// call set_range() on matching channels
void SRV_Channels::set_range(SRV_Channel::Aux_servo_function_t function, uint16_t range)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].set_range(range);
}
}
}
// set MIN parameter for a function
void SRV_Channels::set_output_min_max(SRV_Channel::Aux_servo_function_t function, uint16_t min_pwm, uint16_t max_pwm)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
if (channels[i].function == function) {
channels[i].set_output_min(min_pwm);
channels[i].set_output_max(max_pwm);
}
}
}
// constrain to output min/max for function
void SRV_Channels::constrain_pwm(SRV_Channel::Aux_servo_function_t function)
{
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (c.function == function) {
c.set_output_pwm(constrain_int16(c.output_pwm, c.servo_min, c.servo_max));
}
}
}
/*
upgrade SERVO* parameters. This does the following:
- update to 16 bit FUNCTION from AP_Int8
*/
void SRV_Channels::upgrade_parameters(void)
{
// PARAMETER_CONVERSION - Added: Jan-2020
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
// convert from AP_Int8 to AP_Int16
c.function.convert_parameter_width(AP_PARAM_INT8);
}
}
// set RC output frequency on a function output
void SRV_Channels::set_rc_frequency(SRV_Channel::Aux_servo_function_t function, uint16_t frequency_hz)
{
uint32_t mask = 0;
for (uint8_t i=0; i<NUM_SERVO_CHANNELS; i++) {
SRV_Channel &c = channels[i];
if (c.function == function) {
mask |= (1U<<c.ch_num);
}
}
if (mask != 0) {
hal.rcout->set_freq(mask, frequency_hz);
}
}
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