cc2500_rx.c

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#include "cc2500_compat.h"
 
#include "cc2500_rx.h"
#include "cc2500_rx_spi.h"
#include "cc2500_settings.h"
 
#define UNUSED(x) (void)(x)
 
// CAUTION: LARGE PARTS OF THIS FILE ARE COMMENTED OUT!
// betaflight/src/main/rx/rx.c @ 4e8249e
/*
 * This file is part of Cleanflight and Betaflight.
 *
 * Cleanflight and Betaflight are free software. You can redistribute
 * this software and/or modify this software 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.
 *
 * Cleanflight and Betaflight are distributed in the hope that they
 * 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 software.
 *
 * If not, see <http://www.gnu.org/licenses/>.
 */
 
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
 
#include <string.h>
 
//#include "platform.h"
//
//#include "build/build_config.h"
//#include "build/debug.h"
//
//#include "common/maths.h"
//#include "common/utils.h"
//#include "common/filter.h"
//
//#include "config/config_reset.h"
//#include "config/feature.h"
//
//#include "drivers/adc.h"
//#include "drivers/rx/rx_pwm.h"
//#include "drivers/rx/rx_spi.h"
//#include "drivers/time.h"
//
//#include "fc/config.h"
//#include "fc/rc_controls.h"
//#include "fc/rc_modes.h"
//
//#include "flight/failsafe.h"
//
//#include "io/serial.h"
//
//#include "pg/pg.h"
//#include "pg/pg_ids.h"
//#include "pg/rx.h"
//
//#include "rx/rx.h"
//#include "rx/pwm.h"
//#include "rx/fport.h"
//#include "rx/sbus.h"
//#include "rx/spektrum.h"
//#include "rx/srxl2.h"
//#include "rx/sumd.h"
//#include "rx/sumh.h"
//#include "rx/msp.h"
//#include "rx/xbus.h"
//#include "rx/ibus.h"
//#include "rx/jetiexbus.h"
//#include "rx/crsf.h"
//#include "rx/rx_spi.h"
//#include "rx/targetcustomserial.h"
//
//
//const char rcChannelLetters[] = "AERT12345678abcdefgh";
 
static uint16_t rssi = 0;                  // range: [0;1023]
//static uint8_t rssi_dbm = 130;             // range: [0;130] display 0 to -130
//static timeUs_t lastMspRssiUpdateUs = 0;
 
static pt1Filter_t frameErrFilter;
 
//#ifdef USE_RX_LINK_QUALITY_INFO
//static uint16_t linkQuality = 0;
//#endif
//
//#define MSP_RSSI_TIMEOUT_US 1500000   // 1.5 sec
//
//#define RSSI_ADC_DIVISOR (4096 / 1024)
//#define RSSI_OFFSET_SCALING (1024 / 100.0f)
 
rssiSource_e rssiSource;
//linkQualitySource_e linkQualitySource;
//
//static bool rxDataProcessingRequired = false;
//static bool auxiliaryProcessingRequired = false;
//
//static bool rxSignalReceived = false;
//static bool rxFlightChannelsValid = false;
//static bool rxIsInFailsafeMode = true;
static uint8_t rxChannelCount;
 
//static timeUs_t rxNextUpdateAtUs = 0;
//static uint32_t needRxSignalBefore = 0;
static uint32_t needRxSignalMaxDelayUs;
//static uint32_t suspendRxSignalUntil = 0;
//static uint8_t  skipRxSamples = 0;
//
//static int16_t rcRaw[MAX_SUPPORTED_RC_CHANNEL_COUNT];     // interval [1000;2000]
int16_t rcData[MAX_SUPPORTED_RC_CHANNEL_COUNT];     // interval [1000;2000]
uint32_t rcInvalidPulsPeriod[MAX_SUPPORTED_RC_CHANNEL_COUNT];
 
#define MAX_INVALID_PULS_TIME    300
//#define PPM_AND_PWM_SAMPLE_COUNT 3
//
//#define DELAY_50_HZ (1000000 / 50)
//#define DELAY_33_HZ (1000000 / 33)
#define DELAY_10_HZ (1000000 / 10)
//#define DELAY_5_HZ (1000000 / 5)
//#define SKIP_RC_ON_SUSPEND_PERIOD 1500000           // 1.5 second period in usec (call frequency independent)
//#define SKIP_RC_SAMPLES_ON_RESUME  2                // flush 2 samples to drop wrong measurements (timing independent)
 
rxRuntimeConfig_t rxRuntimeConfig;
static uint8_t rcSampleIndex = 0;
 
//PG_REGISTER_ARRAY_WITH_RESET_FN(rxChannelRangeConfig_t, NON_AUX_CHANNEL_COUNT, rxChannelRangeConfigs, PG_RX_CHANNEL_RANGE_CONFIG, 0);
//void pgResetFn_rxChannelRangeConfigs(rxChannelRangeConfig_t *rxChannelRangeConfigs)
//{
//    // set default calibration to full range and 1:1 mapping
//    for (int i = 0; i < NON_AUX_CHANNEL_COUNT; i++) {
//        rxChannelRangeConfigs[i].min = PWM_RANGE_MIN;
//        rxChannelRangeConfigs[i].max = PWM_RANGE_MAX;
//    }
//}
//
//PG_REGISTER_ARRAY_WITH_RESET_FN(rxFailsafeChannelConfig_t, MAX_SUPPORTED_RC_CHANNEL_COUNT, rxFailsafeChannelConfigs, PG_RX_FAILSAFE_CHANNEL_CONFIG, 0);
//void pgResetFn_rxFailsafeChannelConfigs(rxFailsafeChannelConfig_t *rxFailsafeChannelConfigs)
//{
//    for (int i = 0; i < MAX_SUPPORTED_RC_CHANNEL_COUNT; i++) {
//        rxFailsafeChannelConfigs[i].mode = (i < NON_AUX_CHANNEL_COUNT) ? RX_FAILSAFE_MODE_AUTO : RX_FAILSAFE_MODE_HOLD;
//        rxFailsafeChannelConfigs[i].step = (i == THROTTLE)
//            ? CHANNEL_VALUE_TO_RXFAIL_STEP(RX_MIN_USEC)
//            : CHANNEL_VALUE_TO_RXFAIL_STEP(RX_MID_USEC);
//    }
//}
//
//void resetAllRxChannelRangeConfigurations(rxChannelRangeConfig_t *rxChannelRangeConfig) {
//    // set default calibration to full range and 1:1 mapping
//    for (int i = 0; i < NON_AUX_CHANNEL_COUNT; i++) {
//        rxChannelRangeConfig->min = PWM_RANGE_MIN;
//        rxChannelRangeConfig->max = PWM_RANGE_MAX;
//        rxChannelRangeConfig++;
//    }
//}
 
static uint16_t nullReadRawRC(const rxRuntimeConfig_t *rxRuntimeConfig, uint8_t channel)
{
    UNUSED(rxRuntimeConfig);
    UNUSED(channel);
 
    return PPM_RCVR_TIMEOUT;
}
static uint16_t nullReadRawRC(const rxRuntimeConfig_t *rxRuntimeConfig, uint8_t channel) {…}
 
static uint8_t nullFrameStatus(rxRuntimeConfig_t *rxRuntimeConfig)
{
    UNUSED(rxRuntimeConfig);
 
    return RX_FRAME_PENDING;
}
static uint8_t nullFrameStatus(rxRuntimeConfig_t *rxRuntimeConfig) {…}
 
static bool nullProcessFrame(const rxRuntimeConfig_t *rxRuntimeConfig)
{
    UNUSED(rxRuntimeConfig);
 
    return true;
}
static bool nullProcessFrame(const rxRuntimeConfig_t *rxRuntimeConfig) {…}
 
//STATIC_UNIT_TESTED bool isPulseValid(uint16_t pulseDuration)
//{
//    return  pulseDuration >= rxConfig()->rx_min_usec &&
//            pulseDuration <= rxConfig()->rx_max_usec;
//}
//
//#ifdef USE_SERIAL_RX
//static bool serialRxInit(const rxConfig_t *rxConfig, rxRuntimeConfig_t *rxRuntimeConfig)
//{
//    bool enabled = false;
//    switch (rxRuntimeConfig->serialrxProvider) {
//#ifdef USE_SERIALRX_SRXL2
//    case SERIALRX_SRXL2:
//        enabled = srxl2RxInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_SPEKTRUM
//    case SERIALRX_SRXL:
//    case SERIALRX_SPEKTRUM1024:
//    case SERIALRX_SPEKTRUM2048:
//        enabled = spektrumInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_SBUS
//    case SERIALRX_SBUS:
//        enabled = sbusInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_SUMD
//    case SERIALRX_SUMD:
//        enabled = sumdInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_SUMH
//    case SERIALRX_SUMH:
//        enabled = sumhInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_XBUS
//    case SERIALRX_XBUS_MODE_B:
//    case SERIALRX_XBUS_MODE_B_RJ01:
//        enabled = xBusInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_IBUS
//    case SERIALRX_IBUS:
//        enabled = ibusInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_JETIEXBUS
//    case SERIALRX_JETIEXBUS:
//        enabled = jetiExBusInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_CRSF
//    case SERIALRX_CRSF:
//        enabled = crsfRxInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_TARGET_CUSTOM
//    case SERIALRX_TARGET_CUSTOM:
//        enabled = targetCustomSerialRxInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//#ifdef USE_SERIALRX_FPORT
//    case SERIALRX_FPORT:
//        enabled = fportRxInit(rxConfig, rxRuntimeConfig);
//        break;
//#endif
//    default:
//        enabled = false;
//        break;
//    }
//    return enabled;
//}
//#endif
 
void rxInit(void)
{
    if (featureIsEnabled(FEATURE_RX_PARALLEL_PWM)) {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_PARALLEL_PWM;
    } else if (featureIsEnabled(FEATURE_RX_PPM)) {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_PPM;
    } else if (featureIsEnabled(FEATURE_RX_SERIAL)) {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_SERIAL;
    } else if (featureIsEnabled(FEATURE_RX_MSP)) {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_MSP;
    } else if (featureIsEnabled(FEATURE_RX_SPI)) {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_SPI;
    } else {
        rxRuntimeConfig.rxProvider = RX_PROVIDER_NONE;
    }
    rxRuntimeConfig.serialrxProvider = rxConfig()->serialrx_provider;
    rxRuntimeConfig.rcReadRawFn = nullReadRawRC;
    rxRuntimeConfig.rcFrameStatusFn = nullFrameStatus;
    rxRuntimeConfig.rcProcessFrameFn = nullProcessFrame;
    rcSampleIndex = 0;
    needRxSignalMaxDelayUs = DELAY_10_HZ;
 
    for (int i = 0; i < MAX_SUPPORTED_RC_CHANNEL_COUNT; i++) {
        rcData[i] = rxConfig()->midrc;
        rcInvalidPulsPeriod[i] = millis() + MAX_INVALID_PULS_TIME;
    }
 
//    rcData[THROTTLE] = (featureIsEnabled(FEATURE_3D)) ? rxConfig()->midrc : rxConfig()->rx_min_usec;
//
//    // Initialize ARM switch to OFF position when arming via switch is defined
//    // TODO - move to rc_mode.c
//    for (int i = 0; i < MAX_MODE_ACTIVATION_CONDITION_COUNT; i++) {
//        const modeActivationCondition_t *modeActivationCondition = modeActivationConditions(i);
//        if (modeActivationCondition->modeId == BOXARM && IS_RANGE_USABLE(&modeActivationCondition->range)) {
//            // ARM switch is defined, determine an OFF value
//            uint16_t value;
//            if (modeActivationCondition->range.startStep > 0) {
//                value = MODE_STEP_TO_CHANNEL_VALUE((modeActivationCondition->range.startStep - 1));
//            } else {
//                value = MODE_STEP_TO_CHANNEL_VALUE((modeActivationCondition->range.endStep + 1));
//            }
//            // Initialize ARM AUX channel to OFF value
//            rcData[modeActivationCondition->auxChannelIndex + NON_AUX_CHANNEL_COUNT] = value;
//        }
//    }
 
    switch (rxRuntimeConfig.rxProvider) {
    default:
 
        break;
#ifdef USE_SERIAL_RX
    case RX_PROVIDER_SERIAL:
        {
            const bool enabled = serialRxInit(rxConfig(), &rxRuntimeConfig);
            if (!enabled) {
                rxRuntimeConfig.rcReadRawFn = nullReadRawRC;
                rxRuntimeConfig.rcFrameStatusFn = nullFrameStatus;
            }
        }
 
        break;
#endif
 
#ifdef USE_RX_MSP
    case RX_PROVIDER_MSP:
        rxMspInit(rxConfig(), &rxRuntimeConfig);
        needRxSignalMaxDelayUs = DELAY_5_HZ;
 
        break;
#endif
 
#ifdef USE_RX_SPI
    case RX_PROVIDER_SPI:
        {
            const bool enabled = rxSpiInit(rxSpiConfig(), &rxRuntimeConfig);
            if (!enabled) {
                rxRuntimeConfig.rcReadRawFn = nullReadRawRC;
                rxRuntimeConfig.rcFrameStatusFn = nullFrameStatus;
            }
        }
 
        break;
#endif
 
#if defined(USE_PWM) || defined(USE_PPM)
    case RX_PROVIDER_PPM:
    case RX_PROVIDER_PARALLEL_PWM:
        rxPwmInit(rxConfig(), &rxRuntimeConfig);
 
        break;
#endif
    }
 
#if defined(USE_ADC)
    if (featureIsEnabled(FEATURE_RSSI_ADC)) {
        rssiSource = RSSI_SOURCE_ADC;
    } else
#endif
    if (rxConfig()->rssi_channel > 0) {
        rssiSource = RSSI_SOURCE_RX_CHANNEL;
    }
 
    // Setup source frame RSSI filtering to take averaged values every FRAME_ERR_RESAMPLE_US
    pt1FilterInit(&frameErrFilter, pt1FilterGain(GET_FRAME_ERR_LPF_FREQUENCY(rxConfig()->rssi_src_frame_lpf_period), FRAME_ERR_RESAMPLE_US/1000000.0));
 
    rxChannelCount = MIN(rxConfig()->max_aux_channel + NON_AUX_CHANNEL_COUNT, rxRuntimeConfig.channelCount);
}
void rxInit(void) {…}
 
//bool rxIsReceivingSignal(void)
//{
//    return rxSignalReceived;
//}
//
//bool rxAreFlightChannelsValid(void)
//{
//    return rxFlightChannelsValid;
//}
//
//void suspendRxPwmPpmSignal(void)
//{
//#if defined(USE_PWM) || defined(USE_PPM)
//    if (rxRuntimeConfig.rxProvider == RX_PROVIDER_PARALLEL_PWM || rxRuntimeConfig.rxProvider == RX_PROVIDER_PPM) {
//        suspendRxSignalUntil = micros() + SKIP_RC_ON_SUSPEND_PERIOD;
//        skipRxSamples = SKIP_RC_SAMPLES_ON_RESUME;
//        failsafeOnRxSuspend(SKIP_RC_ON_SUSPEND_PERIOD);
//    }
//#endif
//}
//
//void resumeRxPwmPpmSignal(void)
//{
//#if defined(USE_PWM) || defined(USE_PPM)
//    if (rxRuntimeConfig.rxProvider == RX_PROVIDER_PARALLEL_PWM || rxRuntimeConfig.rxProvider == RX_PROVIDER_PPM) {
//        suspendRxSignalUntil = micros();
//        skipRxSamples = SKIP_RC_SAMPLES_ON_RESUME;
//        failsafeOnRxResume();
//    }
//#endif
//}
//
//#ifdef USE_RX_LINK_QUALITY_INFO
//#define LINK_QUALITY_SAMPLE_COUNT 16
//
//STATIC_UNIT_TESTED uint16_t updateLinkQualitySamples(uint16_t value)
//{
//    static uint16_t samples[LINK_QUALITY_SAMPLE_COUNT];
//    static uint8_t sampleIndex = 0;
//    static uint16_t sum = 0;
//
//    sum += value - samples[sampleIndex];
//    samples[sampleIndex] = value;
//    sampleIndex = (sampleIndex + 1) % LINK_QUALITY_SAMPLE_COUNT;
//    return sum / LINK_QUALITY_SAMPLE_COUNT;
//}
//#endif
//
//static void setLinkQuality(bool validFrame, timeDelta_t currentDeltaTime)
//{
//#ifdef USE_RX_LINK_QUALITY_INFO
//    if (linkQualitySource != LQ_SOURCE_RX_PROTOCOL_CRSF) {
//        // calculate new sample mean
//        linkQuality = updateLinkQualitySamples(validFrame ? LINK_QUALITY_MAX_VALUE : 0);
//    }
//#endif
//
//    if (rssiSource == RSSI_SOURCE_FRAME_ERRORS) {
//        static uint16_t tot_rssi = 0;
//        static uint16_t cnt_rssi = 0;
//        static timeDelta_t resample_time = 0;
//
//        resample_time += currentDeltaTime;
//        tot_rssi += validFrame ? RSSI_MAX_VALUE : 0;
//        cnt_rssi++;
//
//        if (resample_time >= FRAME_ERR_RESAMPLE_US) {
//            setRssi(tot_rssi / cnt_rssi, rssiSource);
//            tot_rssi = 0;
//            cnt_rssi = 0;
//            resample_time -= FRAME_ERR_RESAMPLE_US;
//        }
//    }
//}
//
//void setLinkQualityDirect(uint16_t linkqualityValue)
//{
//#ifdef USE_RX_LINK_QUALITY_INFO
//    linkQuality = linkqualityValue;
//#else
//    UNUSED(linkqualityValue);
//#endif
//}
//
//bool rxUpdateCheck(timeUs_t currentTimeUs, timeDelta_t currentDeltaTime)
//{
//    bool signalReceived = false;
//    bool useDataDrivenProcessing = true;
//
//    switch (rxRuntimeConfig.rxProvider) {
//    default:
//
//        break;
//#if defined(USE_PWM) || defined(USE_PPM)
//    case RX_PROVIDER_PPM:
//        if (isPPMDataBeingReceived()) {
//            signalReceived = true;
//            rxIsInFailsafeMode = false;
//            needRxSignalBefore = currentTimeUs + needRxSignalMaxDelayUs;
//            resetPPMDataReceivedState();
//        }
//
//        break;
//    case RX_PROVIDER_PARALLEL_PWM:
//        if (isPWMDataBeingReceived()) {
//            signalReceived = true;
//            rxIsInFailsafeMode = false;
//            needRxSignalBefore = currentTimeUs + needRxSignalMaxDelayUs;
//            useDataDrivenProcessing = false;
//        }
//
//        break;
//#endif
//    case RX_PROVIDER_SERIAL:
//    case RX_PROVIDER_MSP:
//    case RX_PROVIDER_SPI:
//        {
//            const uint8_t frameStatus = rxRuntimeConfig.rcFrameStatusFn(&rxRuntimeConfig);
//            if (frameStatus & RX_FRAME_COMPLETE) {
//                rxIsInFailsafeMode = (frameStatus & RX_FRAME_FAILSAFE) != 0;
//                bool rxFrameDropped = (frameStatus & RX_FRAME_DROPPED) != 0;
//                signalReceived = !(rxIsInFailsafeMode || rxFrameDropped);
//                if (signalReceived) {
//                    needRxSignalBefore = currentTimeUs + needRxSignalMaxDelayUs;
//                }
//
//                setLinkQuality(signalReceived, currentDeltaTime);
//            }
//
//            if (frameStatus & RX_FRAME_PROCESSING_REQUIRED) {
//                auxiliaryProcessingRequired = true;
//            }
//        }
//
//        break;
//    }
//
//    if (signalReceived) {
//        rxSignalReceived = true;
//    } else if (currentTimeUs >= needRxSignalBefore) {
//        rxSignalReceived = false;
//    }
//
//    if ((signalReceived && useDataDrivenProcessing) || cmpTimeUs(currentTimeUs, rxNextUpdateAtUs) > 0) {
//        rxDataProcessingRequired = true;
//    }
//
//    return rxDataProcessingRequired || auxiliaryProcessingRequired; // data driven or 50Hz
//}
//
//#if defined(USE_PWM) || defined(USE_PPM)
//static uint16_t calculateChannelMovingAverage(uint8_t chan, uint16_t sample)
//{
//    static int16_t rcSamples[MAX_SUPPORTED_RX_PARALLEL_PWM_OR_PPM_CHANNEL_COUNT][PPM_AND_PWM_SAMPLE_COUNT];
//    static int16_t rcDataMean[MAX_SUPPORTED_RX_PARALLEL_PWM_OR_PPM_CHANNEL_COUNT];
//    static bool rxSamplesCollected = false;
//
//    const uint8_t currentSampleIndex = rcSampleIndex % PPM_AND_PWM_SAMPLE_COUNT;
//
//    // update the recent samples and compute the average of them
//    rcSamples[chan][currentSampleIndex] = sample;
//
//    // avoid returning an incorrect average which would otherwise occur before enough samples
//    if (!rxSamplesCollected) {
//        if (rcSampleIndex < PPM_AND_PWM_SAMPLE_COUNT) {
//            return sample;
//        }
//        rxSamplesCollected = true;
//    }
//
//    rcDataMean[chan] = 0;
//    for (int sampleIndex = 0; sampleIndex < PPM_AND_PWM_SAMPLE_COUNT; sampleIndex++) {
//        rcDataMean[chan] += rcSamples[chan][sampleIndex];
//    }
//    return rcDataMean[chan] / PPM_AND_PWM_SAMPLE_COUNT;
//}
//#endif
//
//static uint16_t getRxfailValue(uint8_t channel)
//{
//    const rxFailsafeChannelConfig_t *channelFailsafeConfig = rxFailsafeChannelConfigs(channel);
//
//    switch (channelFailsafeConfig->mode) {
//    case RX_FAILSAFE_MODE_AUTO:
//        switch (channel) {
//        case ROLL:
//        case PITCH:
//        case YAW:
//            return rxConfig()->midrc;
//        case THROTTLE:
//            if (featureIsEnabled(FEATURE_3D) && !IS_RC_MODE_ACTIVE(BOX3D) && !flight3DConfig()->switched_mode3d) {
//                return rxConfig()->midrc;
//            } else {
//                return rxConfig()->rx_min_usec;
//            }
//        }
//
//    FALLTHROUGH;
//    default:
//    case RX_FAILSAFE_MODE_INVALID:
//    case RX_FAILSAFE_MODE_HOLD:
//        return rcData[channel];
//
//    case RX_FAILSAFE_MODE_SET:
//        return RXFAIL_STEP_TO_CHANNEL_VALUE(channelFailsafeConfig->step);
//    }
//}
//
//STATIC_UNIT_TESTED uint16_t applyRxChannelRangeConfiguraton(int sample, const rxChannelRangeConfig_t *range)
//{
//    // Avoid corruption of channel with a value of PPM_RCVR_TIMEOUT
//    if (sample == PPM_RCVR_TIMEOUT) {
//        return PPM_RCVR_TIMEOUT;
//    }
//
//    sample = scaleRange(sample, range->min, range->max, PWM_RANGE_MIN, PWM_RANGE_MAX);
//    sample = constrain(sample, PWM_PULSE_MIN, PWM_PULSE_MAX);
//
//    return sample;
//}
//
//static void readRxChannelsApplyRanges(void)
//{
//    for (int channel = 0; channel < rxChannelCount; channel++) {
//
//        const uint8_t rawChannel = channel < RX_MAPPABLE_CHANNEL_COUNT ? rxConfig()->rcmap[channel] : channel;
//
//        // sample the channel
//        uint16_t sample = rxRuntimeConfig.rcReadRawFn(&rxRuntimeConfig, rawChannel);
//
//        // apply the rx calibration
//        if (channel < NON_AUX_CHANNEL_COUNT) {
//            sample = applyRxChannelRangeConfiguraton(sample, rxChannelRangeConfigs(channel));
//        }
//
//        rcRaw[channel] = sample;
//    }
//}
//
//static void detectAndApplySignalLossBehaviour(void)
//{
//    const uint32_t currentTimeMs = millis();
//
//    const bool useValueFromRx = rxSignalReceived && !rxIsInFailsafeMode;
//
//    DEBUG_SET(DEBUG_RX_SIGNAL_LOSS, 0, rxSignalReceived);
//    DEBUG_SET(DEBUG_RX_SIGNAL_LOSS, 1, rxIsInFailsafeMode);
//
//    rxFlightChannelsValid = true;
//    for (int channel = 0; channel < rxChannelCount; channel++) {
//        uint16_t sample = rcRaw[channel];
//
//        const bool validPulse = useValueFromRx && isPulseValid(sample);
//
//        if (validPulse) {
//            rcInvalidPulsPeriod[channel] = currentTimeMs + MAX_INVALID_PULS_TIME;
//        } else {
//            if (cmp32(currentTimeMs, rcInvalidPulsPeriod[channel]) < 0) {
//                continue;           // skip to next channel to hold channel value MAX_INVALID_PULS_TIME
//            } else {
//                sample = getRxfailValue(channel);   // after that apply rxfail value
//                if (channel < NON_AUX_CHANNEL_COUNT) {
//                    rxFlightChannelsValid = false;
//                }
//            }
//        }
//#if defined(USE_PWM) || defined(USE_PPM)
//        if (rxRuntimeConfig.rxProvider == RX_PROVIDER_PARALLEL_PWM || rxRuntimeConfig.rxProvider == RX_PROVIDER_PPM) {
//            // smooth output for PWM and PPM
//            rcData[channel] = calculateChannelMovingAverage(channel, sample);
//        } else
//#endif
//        {
//            rcData[channel] = sample;
//        }
//    }
//
//    if (rxFlightChannelsValid && !IS_RC_MODE_ACTIVE(BOXFAILSAFE)) {
//        failsafeOnValidDataReceived();
//    } else {
//        rxIsInFailsafeMode = true;
//        failsafeOnValidDataFailed();
//        for (int channel = 0; channel < rxChannelCount; channel++) {
//            rcData[channel] = getRxfailValue(channel);
//        }
//    }
//    DEBUG_SET(DEBUG_RX_SIGNAL_LOSS, 3, rcData[THROTTLE]);
//}
//
//bool calculateRxChannelsAndUpdateFailsafe(timeUs_t currentTimeUs)
//{
//    if (auxiliaryProcessingRequired) {
//        auxiliaryProcessingRequired = !rxRuntimeConfig.rcProcessFrameFn(&rxRuntimeConfig);
//    }
//
//    if (!rxDataProcessingRequired) {
//        return false;
//    }
//
//    rxDataProcessingRequired = false;
//    rxNextUpdateAtUs = currentTimeUs + DELAY_33_HZ;
//
//    // only proceed when no more samples to skip and suspend period is over
//    if (skipRxSamples || currentTimeUs <= suspendRxSignalUntil) {
//        if (currentTimeUs > suspendRxSignalUntil) {
//            skipRxSamples--;
//        }
//
//        return true;
//    }
//
//    readRxChannelsApplyRanges();
//    detectAndApplySignalLossBehaviour();
//
//    rcSampleIndex++;
//
//    return true;
//}
//
//void parseRcChannels(const char *input, rxConfig_t *rxConfig)
//{
//    for (const char *c = input; *c; c++) {
//        const char *s = strchr(rcChannelLetters, *c);
//        if (s && (s < rcChannelLetters + RX_MAPPABLE_CHANNEL_COUNT)) {
//            rxConfig->rcmap[s - rcChannelLetters] = c - input;
//        }
//    }
//}
 
void setRssiDirect(uint16_t newRssi, rssiSource_e source)
{
    if (source != rssiSource) {
        return;
    }
 
    rssi = newRssi;
}
void setRssiDirect(uint16_t newRssi, rssiSource_e source) {…}
 
#define RSSI_SAMPLE_COUNT 16
 
static uint16_t updateRssiSamples(uint16_t value)
{
    static uint16_t samples[RSSI_SAMPLE_COUNT];
    static uint8_t sampleIndex = 0;
    static unsigned sum = 0;
 
    sum += value - samples[sampleIndex];
    samples[sampleIndex] = value;
    sampleIndex = (sampleIndex + 1) % RSSI_SAMPLE_COUNT;
    return sum / RSSI_SAMPLE_COUNT;
}
static uint16_t updateRssiSamples(uint16_t value) {…}
 
void setRssi(uint16_t rssiValue, rssiSource_e source)
{
    if (source != rssiSource) {
        return;
    }
 
    // Filter RSSI value
    if (source == RSSI_SOURCE_FRAME_ERRORS) {
        rssi = pt1FilterApply(&frameErrFilter, rssiValue);
    } else {
        // calculate new sample mean
        rssi = updateRssiSamples(rssiValue);
    }
}
void setRssi(uint16_t rssiValue, rssiSource_e source) {…}
 
//void setRssiMsp(uint8_t newMspRssi)
//{
//    if (rssiSource == RSSI_SOURCE_NONE) {
//        rssiSource = RSSI_SOURCE_MSP;
//    }
//
//    if (rssiSource == RSSI_SOURCE_MSP) {
//        rssi = ((uint16_t)newMspRssi) << 2;
//        lastMspRssiUpdateUs = micros();
//    }
//}
//
//static void updateRSSIPWM(void)
//{
//    // Read value of AUX channel as rssi
//    int16_t pwmRssi = rcData[rxConfig()->rssi_channel - 1];
//
//    // RSSI_Invert option
//    if (rxConfig()->rssi_invert) {
//        pwmRssi = ((2000 - pwmRssi) + 1000);
//    }
//
//    // Range of rawPwmRssi is [1000;2000]. rssi should be in [0;1023];
//    setRssiDirect(constrain(((pwmRssi - 1000) / 1000.0f) * RSSI_MAX_VALUE, 0, RSSI_MAX_VALUE), RSSI_SOURCE_RX_CHANNEL);
//}
//
//static void updateRSSIADC(timeUs_t currentTimeUs)
//{
//#ifndef USE_ADC
//    UNUSED(currentTimeUs);
//#else
//    static uint32_t rssiUpdateAt = 0;
//
//    if ((int32_t)(currentTimeUs - rssiUpdateAt) < 0) {
//        return;
//    }
//    rssiUpdateAt = currentTimeUs + DELAY_50_HZ;
//
//    const uint16_t adcRssiSample = adcGetChannel(ADC_RSSI);
//    uint16_t rssiValue = adcRssiSample / RSSI_ADC_DIVISOR;
//
//    // RSSI_Invert option
//    if (rxConfig()->rssi_invert) {
//        rssiValue = RSSI_MAX_VALUE - rssiValue;
//    }
//
//    setRssi(rssiValue, RSSI_SOURCE_ADC);
//#endif
//}
//
//void updateRSSI(timeUs_t currentTimeUs)
//{
//    switch (rssiSource) {
//    case RSSI_SOURCE_RX_CHANNEL:
//        updateRSSIPWM();
//        break;
//    case RSSI_SOURCE_ADC:
//        updateRSSIADC(currentTimeUs);
//        break;
//    case RSSI_SOURCE_MSP:
//        if (cmpTimeUs(micros(), lastMspRssiUpdateUs) > MSP_RSSI_TIMEOUT_US) {
//            rssi = 0;
//        }
//        break;
//    default:
//        break;
//    }
//}
//
//uint16_t getRssi(void)
//{
//    return rxConfig()->rssi_scale / 100.0f * rssi + rxConfig()->rssi_offset * RSSI_OFFSET_SCALING;
//}
//
//uint8_t getRssiPercent(void)
//{
//    return scaleRange(getRssi(), 0, RSSI_MAX_VALUE, 0, 100);
//}
//
//uint8_t getRssiDbm(void)
//{
//    return rssi_dbm;
//}
//
//#define RSSI_SAMPLE_COUNT_DBM 16
//
//static uint8_t updateRssiDbmSamples(uint8_t value)
//{
//    static uint16_t samplesdbm[RSSI_SAMPLE_COUNT_DBM];
//    static uint8_t sampledbmIndex = 0;
//    static unsigned sumdbm = 0;
//
//    sumdbm += value - samplesdbm[sampledbmIndex];
//    samplesdbm[sampledbmIndex] = value;
//    sampledbmIndex = (sampledbmIndex + 1) % RSSI_SAMPLE_COUNT_DBM;
//    return sumdbm / RSSI_SAMPLE_COUNT_DBM;
//}
//
//void setRssiDbm(uint8_t rssiDbmValue, rssiSource_e source)
//{
//    if (source != rssiSource) {
//        return;
//    }
//
//    rssi_dbm = updateRssiDbmSamples(rssiDbmValue);
//}
//
//void setRssiDbmDirect(uint8_t newRssiDbm, rssiSource_e source)
//{
//    if (source != rssiSource) {
//        return;
//    }
//
//    rssi_dbm = newRssiDbm;
//}
//
//#ifdef USE_RX_LINK_QUALITY_INFO
//uint16_t rxGetLinkQuality(void)
//{
//    return linkQuality;
//}
//
//uint16_t rxGetLinkQualityPercent(void)
//{
//    return (linkQualitySource == LQ_SOURCE_RX_PROTOCOL_CRSF) ?  (linkQuality / 3.41) : scaleRange(linkQuality, 0, LINK_QUALITY_MAX_VALUE, 0, 100);
//}
//#endif
//
//uint16_t rxGetRefreshRate(void)
//{
//    return rxRuntimeConfig.rxRefreshRate;
//}
//
//bool isRssiConfigured(void)
//{
//    return rssiSource != RSSI_SOURCE_NONE;
//}