// Function for loop trigger
void taskMainPidLoopCheck(void)
{
static bool runTaskMainSubprocesses;
static uint8_t pidUpdateCountdown;
cycleTime = getTaskDeltaTime(TASK_SELF);
if (debugMode == DEBUG_CYCLETIME) {
debug[0] = cycleTime;
debug[1] = averageSystemLoadPercent;
}
if (runTaskMainSubprocesses) {
subTaskMainSubprocesses();
runTaskMainSubprocesses = false;
}
gyroUpdate();
if (pidUpdateCountdown) {
pidUpdateCountdown--;
} else {
pidUpdateCountdown = setPidUpdateCountDown();
subTaskPidController();
subTaskMotorUpdate();
runTaskMainSubprocesses = true;
}
}
void filterRc(void){
static int16_t lastCommand[4] = { 0, 0, 0, 0 };
static int16_t deltaRC[4] = { 0, 0, 0, 0 };
static int16_t factor, rcInterpolationFactor;
uint16_t rxRefreshRate;
// Set RC refresh rate for sampling and channels to filter
rxRefreshRate = rxGetRefreshRate();
if (isRXDataNew) {
rxRefreshRate = constrain(getTaskDeltaTime(TASK_RX), 1000, 20000) + 1000; // Add slight overhead to prevent ramps
rcInterpolationFactor = rxRefreshRate / targetPidLooptime + 1;
for (int channel=0; channel < 4; channel++) {
deltaRC[channel] = rcCommand[channel] - (lastCommand[channel] - deltaRC[channel] * factor / rcInterpolationFactor);
lastCommand[channel] = rcCommand[channel];
}
isRXDataNew = false;
factor = rcInterpolationFactor - 1;
} else {
factor--;
}
// Interpolate steps of rcCommand
if (factor > 0) {
for (int channel=0; channel < 4; channel++) {
rcCommand[channel] = lastCommand[channel] - deltaRC[channel] * factor/rcInterpolationFactor;
}
} else {
factor = 0;
}
}
// Function for loop trigger
FAST_CODE void taskMainPidLoop(timeUs_t currentTimeUs)
{
static uint32_t pidUpdateCounter = 0;
#if defined(SIMULATOR_BUILD) && defined(SIMULATOR_GYROPID_SYNC)
if (lockMainPID() != 0) return;
#endif
// DEBUG_PIDLOOP, timings for:
// 0 - gyroUpdate()
// 1 - subTaskPidController()
// 2 - subTaskMotorUpdate()
// 3 - subTaskPidSubprocesses()
gyroUpdate(currentTimeUs);
DEBUG_SET(DEBUG_PIDLOOP, 0, micros() - currentTimeUs);
if (pidUpdateCounter++ % pidConfig()->pid_process_denom == 0) {
subTaskRcCommand(currentTimeUs);
subTaskPidController(currentTimeUs);
subTaskMotorUpdate(currentTimeUs);
subTaskPidSubprocesses(currentTimeUs);
}
if (debugMode == DEBUG_CYCLETIME) {
debug[0] = getTaskDeltaTime(TASK_SELF);
debug[1] = averageSystemLoadPercent;
}
}
// Function for loop trigger
void taskMainPidLoopChecker(void) {
// getTaskDeltaTime() returns delta time freezed at the moment of entering the scheduler. currentTime is freezed at the very same point.
// To make busy-waiting timeout work we need to account for time spent within busy-waiting loop
uint32_t currentDeltaTime = getTaskDeltaTime(TASK_SELF);
if (masterConfig.gyroSync) {
while (1) {
if (gyroSyncCheckUpdate() || ((currentDeltaTime + (micros() - currentTime)) >= (gyro.targetLooptime + GYRO_WATCHDOG_DELAY))) {
break;
}
}
}
taskMainPidLoop();
}
void taskGyro(void)
{
gyroUpdate();
gyroUpdateAt += US_FROM_HZ(gyro.sampleFrequencyHz);
gyroReadyCounter++;
gyroDeltaUs = getTaskDeltaTime(TASK_SELF);
if (debugMode == DEBUG_CYCLETIME) {
debug[0] = gyroDeltaUs;
debug[1] = averageSystemLoadPercent;
}
if (debugMode == DEBUG_GYRO_SYNC) {
debug[0] = gyroDeltaUs;
}
}
// Function for loop trigger
void taskMainPidLoop(timeUs_t currentTimeUs)
{
static bool runTaskMainSubprocesses;
static uint8_t pidUpdateCountdown;
#if defined(SIMULATOR_BUILD) && defined(SIMULATOR_GYROPID_SYNC)
if(lockMainPID() != 0) return;
#endif
if (debugMode == DEBUG_CYCLETIME) {
debug[0] = getTaskDeltaTime(TASK_SELF);
debug[1] = averageSystemLoadPercent;
}
if (runTaskMainSubprocesses) {
subTaskMainSubprocesses(currentTimeUs);
runTaskMainSubprocesses = false;
}
// DEBUG_PIDLOOP, timings for:
// 0 - gyroUpdate()
// 1 - pidController()
// 2 - subTaskMainSubprocesses()
// 3 - subTaskMotorUpdate()
uint32_t startTime = 0;
if (debugMode == DEBUG_PIDLOOP) {startTime = micros();}
gyroUpdate();
DEBUG_SET(DEBUG_PIDLOOP, 0, micros() - startTime);
if (pidUpdateCountdown) {
pidUpdateCountdown--;
} else {
pidUpdateCountdown = setPidUpdateCountDown();
subTaskPidController(currentTimeUs);
subTaskMotorUpdate();
runTaskMainSubprocesses = true;
}
}
void taskUpdateCycleTime(void)
{
cycleTime = getTaskDeltaTime(TASK_SELF);
}
void processRcCommand(void)
{
static int16_t lastCommand[4] = { 0, 0, 0, 0 };
static int16_t deltaRC[4] = { 0, 0, 0, 0 };
static int16_t factor, rcInterpolationFactor;
uint16_t rxRefreshRate;
bool readyToCalculateRate = false;
if (masterConfig.rxConfig.rcInterpolation || flightModeFlags) {
if (isRXDataNew) {
// Set RC refresh rate for sampling and channels to filter
switch (masterConfig.rxConfig.rcInterpolation) {
case(RC_SMOOTHING_AUTO):
rxRefreshRate = constrain(getTaskDeltaTime(TASK_RX), 1000, 20000) + 1000; // Add slight overhead to prevent ramps
break;
case(RC_SMOOTHING_MANUAL):
rxRefreshRate = 1000 * masterConfig.rxConfig.rcInterpolationInterval;
break;
case(RC_SMOOTHING_OFF):
case(RC_SMOOTHING_DEFAULT):
default:
initRxRefreshRate(&rxRefreshRate);
}
rcInterpolationFactor = rxRefreshRate / targetPidLooptime + 1;
if (debugMode == DEBUG_RC_INTERPOLATION) {
for (int axis = 0; axis < 2; axis++) debug[axis] = rcCommand[axis];
debug[3] = rxRefreshRate;
}
for (int channel=0; channel < 4; channel++) {
deltaRC[channel] = rcCommand[channel] - (lastCommand[channel] - deltaRC[channel] * factor / rcInterpolationFactor);
lastCommand[channel] = rcCommand[channel];
}
factor = rcInterpolationFactor - 1;
} else {
factor--;
}
// Interpolate steps of rcCommand
if (factor > 0) {
for (int channel=0; channel < 4; channel++) rcCommand[channel] = lastCommand[channel] - deltaRC[channel] * factor/rcInterpolationFactor;
} else {
factor = 0;
}
readyToCalculateRate = true;
} else {
factor = 0; // reset factor in case of level modes flip flopping
}
if (readyToCalculateRate || isRXDataNew) {
// Scaling of AngleRate to camera angle (Mixing Roll and Yaw)
if (masterConfig.rxConfig.fpvCamAngleDegrees && IS_RC_MODE_ACTIVE(BOXFPVANGLEMIX) && !FLIGHT_MODE(HEADFREE_MODE))
scaleRcCommandToFpvCamAngle();
for (int axis = 0; axis < 3; axis++) calculateSetpointRate(axis, rcCommand[axis]);
isRXDataNew = false;
}
}
void taskMainPidLoop(void)
{
cycleTime = getTaskDeltaTime(TASK_SELF);
dT = (float)cycleTime * 0.000001f;
imuUpdateAccelerometer();
imuUpdateGyroAndAttitude();
annexCode();
if (masterConfig.rxConfig.rcSmoothing) {
filterRc(isRXDataNew);
}
#if defined(NAV)
if (isRXDataNew) {
updateWaypointsAndNavigationMode();
}
#endif
isRXDataNew = false;
#if defined(NAV)
updatePositionEstimator();
applyWaypointNavigationAndAltitudeHold();
#endif
// If we're armed, at minimum throttle, and we do arming via the
// sticks, do not process yaw input from the rx. We do this so the
// motors do not spin up while we are trying to arm or disarm.
// Allow yaw control for tricopters if the user wants the servo to move even when unarmed.
if (isUsingSticksForArming() && rcData[THROTTLE] <= masterConfig.rxConfig.mincheck
#ifndef USE_QUAD_MIXER_ONLY
#ifdef USE_SERVOS
&& !((masterConfig.mixerMode == MIXER_TRI || masterConfig.mixerMode == MIXER_CUSTOM_TRI) && masterConfig.servoMixerConfig.tri_unarmed_servo)
#endif
&& masterConfig.mixerMode != MIXER_AIRPLANE
&& masterConfig.mixerMode != MIXER_FLYING_WING
&& masterConfig.mixerMode != MIXER_CUSTOM_AIRPLANE
#endif
) {
rcCommand[YAW] = 0;
}
// Apply throttle tilt compensation
if (!STATE(FIXED_WING)) {
int16_t thrTiltCompStrength = 0;
if (navigationRequiresThrottleTiltCompensation()) {
thrTiltCompStrength = 100;
}
else if (currentProfile->throttle_tilt_compensation_strength && (FLIGHT_MODE(ANGLE_MODE) || FLIGHT_MODE(HORIZON_MODE))) {
thrTiltCompStrength = currentProfile->throttle_tilt_compensation_strength;
}
if (thrTiltCompStrength) {
rcCommand[THROTTLE] = constrain(masterConfig.motorConfig.minthrottle
+ (rcCommand[THROTTLE] - masterConfig.motorConfig.minthrottle) * calculateThrottleTiltCompensationFactor(thrTiltCompStrength),
masterConfig.motorConfig.minthrottle,
masterConfig.motorConfig.maxthrottle);
}
}
pidController(¤tProfile->pidProfile, currentControlRateProfile, &masterConfig.rxConfig);
#ifdef HIL
if (hilActive) {
hilUpdateControlState();
motorControlEnable = false;
}
#endif
mixTable();
#ifdef USE_SERVOS
if (isMixerUsingServos()) {
servoMixer(currentProfile->flaperon_throw_offset, currentProfile->flaperon_throw_inverted);
}
if (feature(FEATURE_SERVO_TILT)) {
processServoTilt();
}
//Servos should be filtered or written only when mixer is using servos or special feaures are enabled
if (isServoOutputEnabled()) {
filterServos();
writeServos();
}
#endif
if (motorControlEnable) {
writeMotors();
}
#ifdef USE_SDCARD
afatfs_poll();
#endif
#ifdef BLACKBOX
if (!cliMode && feature(FEATURE_BLACKBOX)) {
handleBlackbox();
}
#endif
}
void taskMainPidLoop(void)
{
cycleTime = getTaskDeltaTime(TASK_SELF);
dT = (float)cycleTime * 0.000001f;
// Calculate average cycle time and average jitter
filteredCycleTime = filterApplyPt1(cycleTime, &filteredCycleTimeState, 1, dT);
debug[0] = cycleTime;
debug[1] = cycleTime - filteredCycleTime;
imuUpdateGyroAndAttitude();
annexCode();
if (rxConfig()->rcSmoothing) {
filterRc();
}
#if defined(BARO) || defined(SONAR)
haveProcessedAnnexCodeOnce = true;
#endif
#ifdef MAG
if (sensors(SENSOR_MAG)) {
updateMagHold();
}
#endif
#if defined(BARO) || defined(SONAR)
if (sensors(SENSOR_BARO) || sensors(SENSOR_SONAR)) {
if (FLIGHT_MODE(BARO_MODE) || FLIGHT_MODE(SONAR_MODE)) {
applyAltHold();
}
}
#endif
// If we're armed, at minimum throttle, and we do arming via the
// sticks, do not process yaw input from the rx. We do this so the
// motors do not spin up while we are trying to arm or disarm.
// Allow yaw control for tricopters if the user wants the servo to move even when unarmed.
if (isUsingSticksForArming() && rcData[THROTTLE] <= rxConfig()->mincheck
#ifndef USE_QUAD_MIXER_ONLY
#ifdef USE_SERVOS
&& !((mixerConfig()->mixerMode == MIXER_TRI || mixerConfig()->mixerMode == MIXER_CUSTOM_TRI) && mixerConfig()->tri_unarmed_servo)
#endif
&& mixerConfig()->mixerMode != MIXER_AIRPLANE
&& mixerConfig()->mixerMode != MIXER_FLYING_WING
#endif
) {
rcCommand[YAW] = 0;
}
if (throttleCorrectionConfig()->throttle_correction_value && (FLIGHT_MODE(ANGLE_MODE) || FLIGHT_MODE(HORIZON_MODE))) {
rcCommand[THROTTLE] += calculateThrottleAngleCorrection(throttleCorrectionConfig()->throttle_correction_value);
}
#ifdef GPS
if (sensors(SENSOR_GPS)) {
if ((FLIGHT_MODE(GPS_HOME_MODE) || FLIGHT_MODE(GPS_HOLD_MODE)) && STATE(GPS_FIX_HOME)) {
updateGpsStateForHomeAndHoldMode();
}
}
#endif
// PID - note this is function pointer set by setPIDController()
pid_controller(
pidProfile(),
currentControlRateProfile,
imuConfig()->max_angle_inclination,
&accelerometerConfig()->accelerometerTrims,
rxConfig()
);
mixTable();
#ifdef USE_SERVOS
filterServos();
writeServos();
#endif
if (motorControlEnable) {
writeMotors();
}
#ifdef USE_SDCARD
afatfs_poll();
#endif
#ifdef BLACKBOX
if (!cliMode && feature(FEATURE_BLACKBOX)) {
handleBlackbox();
}
#endif
}
void processRcStickPositions(throttleStatus_e throttleStatus)
{
// time the sticks are maintained
static int16_t rcDelayMs;
// hold sticks position for command combos
static uint8_t rcSticks;
// an extra guard for disarming through switch to prevent that one frame can disarm it
static uint8_t rcDisarmTicks;
static bool doNotRepeat;
#ifdef USE_CMS
if (cmsInMenu) {
return;
}
#endif
// checking sticks positions
uint8_t stTmp = 0;
for (int i = 0; i < 4; i++) {
stTmp >>= 2;
if (rcData[i] > rxConfig()->mincheck) {
stTmp |= 0x80; // check for MIN
}
if (rcData[i] < rxConfig()->maxcheck) {
stTmp |= 0x40; // check for MAX
}
}
if (stTmp == rcSticks) {
if (rcDelayMs <= INT16_MAX - (getTaskDeltaTime(TASK_SELF) / 1000)) {
rcDelayMs += getTaskDeltaTime(TASK_SELF) / 1000;
}
} else {
rcDelayMs = 0;
doNotRepeat = false;
}
rcSticks = stTmp;
// perform actions
if (!isUsingSticksToArm) {
if (IS_RC_MODE_ACTIVE(BOXARM)) {
rcDisarmTicks = 0;
// Arming via ARM BOX
tryArm();
} else {
// Disarming via ARM BOX
resetArmingDisabled();
if (ARMING_FLAG(ARMED) && rxIsReceivingSignal() && !failsafeIsActive() ) {
rcDisarmTicks++;
if (rcDisarmTicks > 3) {
if (armingConfig()->disarm_kill_switch) {
disarm();
} else if (throttleStatus == THROTTLE_LOW) {
disarm();
}
}
}
}
} else if (rcSticks == THR_LO + YAW_LO + PIT_CE + ROL_CE) {
if (rcDelayMs >= ARM_DELAY_MS && !doNotRepeat) {
doNotRepeat = true;
// Disarm on throttle down + yaw
if (ARMING_FLAG(ARMED))
disarm();
else {
beeper(BEEPER_DISARM_REPEAT); // sound tone while stick held
repeatAfter(STICK_AUTOREPEAT_MS); // disarm tone will repeat
}
}
return;
} else if (rcSticks == THR_LO + YAW_HI + PIT_CE + ROL_CE) {
if (rcDelayMs >= ARM_DELAY_MS && !doNotRepeat) {
doNotRepeat = true;
if (!ARMING_FLAG(ARMED)) {
// Arm via YAW
tryArm();
} else {
resetArmingDisabled();
}
}
return;
}
if (ARMING_FLAG(ARMED) || doNotRepeat || rcDelayMs <= STICK_DELAY_MS) {
return;
}
doNotRepeat = true;
// actions during not armed
if (rcSticks == THR_LO + YAW_LO + PIT_LO + ROL_CE) {
// GYRO calibration
gyroStartCalibration(false);
#ifdef USE_GPS
if (feature(FEATURE_GPS)) {
GPS_reset_home_position();
}
#endif
#ifdef USE_BARO
if (sensors(SENSOR_BARO))
baroSetCalibrationCycles(10); // calibrate baro to new ground level (10 * 25 ms = ~250 ms non blocking)
#endif
return;
}
if (feature(FEATURE_INFLIGHT_ACC_CAL) && (rcSticks == THR_LO + YAW_LO + PIT_HI + ROL_HI)) {
// Inflight ACC Calibration
handleInflightCalibrationStickPosition();
return;
}
// Change PID profile
int newPidProfile = 0;
if (rcSticks == THR_LO + YAW_LO + PIT_CE + ROL_LO) { // ROLL left -> PID profile 1
newPidProfile = 1;
} else if (rcSticks == THR_LO + YAW_LO + PIT_HI + ROL_CE) { // PITCH up -> PID profile 2
newPidProfile = 2;
} else if (rcSticks == THR_LO + YAW_LO + PIT_CE + ROL_HI) { // ROLL right -> PID profile 3
newPidProfile = 3;
}
if (newPidProfile) {
changePidProfile(newPidProfile - 1);
return;
}
if (rcSticks == THR_LO + YAW_LO + PIT_LO + ROL_HI) {
saveConfigAndNotify();
}
if (rcSticks == THR_HI + YAW_LO + PIT_LO + ROL_CE) {
// Calibrating Acc
accSetCalibrationCycles(CALIBRATING_ACC_CYCLES);
return;
}
if (rcSticks == THR_HI + YAW_HI + PIT_LO + ROL_CE) {
// Calibrating Mag
ENABLE_STATE(CALIBRATE_MAG);
return;
}
if (FLIGHT_MODE(ANGLE_MODE|HORIZON_MODE)) {
// in ANGLE or HORIZON mode, so use sticks to apply accelerometer trims
rollAndPitchTrims_t accelerometerTrimsDelta;
memset(&accelerometerTrimsDelta, 0, sizeof(accelerometerTrimsDelta));
bool shouldApplyRollAndPitchTrimDelta = false;
if (rcSticks == THR_HI + YAW_CE + PIT_HI + ROL_CE) {
accelerometerTrimsDelta.values.pitch = 2;
shouldApplyRollAndPitchTrimDelta = true;
} else if (rcSticks == THR_HI + YAW_CE + PIT_LO + ROL_CE) {
accelerometerTrimsDelta.values.pitch = -2;
shouldApplyRollAndPitchTrimDelta = true;
} else if (rcSticks == THR_HI + YAW_CE + PIT_CE + ROL_HI) {
accelerometerTrimsDelta.values.roll = 2;
shouldApplyRollAndPitchTrimDelta = true;
} else if (rcSticks == THR_HI + YAW_CE + PIT_CE + ROL_LO) {
accelerometerTrimsDelta.values.roll = -2;
shouldApplyRollAndPitchTrimDelta = true;
}
if (shouldApplyRollAndPitchTrimDelta) {
applyAndSaveAccelerometerTrimsDelta(&accelerometerTrimsDelta);
repeatAfter(STICK_AUTOREPEAT_MS);
return;
}
} else {
// in ACRO mode, so use sticks to change RATE profile
switch (rcSticks) {
case THR_HI + YAW_CE + PIT_HI + ROL_CE:
changeControlRateProfile(0);
return;
case THR_HI + YAW_CE + PIT_LO + ROL_CE:
changeControlRateProfile(1);
return;
case THR_HI + YAW_CE + PIT_CE + ROL_HI:
changeControlRateProfile(2);
return;
case THR_HI + YAW_CE + PIT_CE + ROL_LO:
changeControlRateProfile(3);
return;
}
}
#ifdef USE_DASHBOARD
if (rcSticks == THR_LO + YAW_CE + PIT_HI + ROL_LO) {
dashboardDisablePageCycling();
}
if (rcSticks == THR_LO + YAW_CE + PIT_HI + ROL_HI) {
dashboardEnablePageCycling();
}
#endif
#ifdef USE_VTX_CONTROL
if (rcSticks == THR_HI + YAW_LO + PIT_CE + ROL_HI) {
vtxIncrementBand();
}
if (rcSticks == THR_HI + YAW_LO + PIT_CE + ROL_LO) {
vtxDecrementBand();
}
if (rcSticks == THR_HI + YAW_HI + PIT_CE + ROL_HI) {
vtxIncrementChannel();
}
if (rcSticks == THR_HI + YAW_HI + PIT_CE + ROL_LO) {
vtxDecrementChannel();
}
#endif
#ifdef USE_CAMERA_CONTROL
if (rcSticks == THR_CE + YAW_HI + PIT_CE + ROL_CE) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_ENTER, 0);
repeatAfter(3 * STICK_DELAY_MS);
} else if (rcSticks == THR_CE + YAW_CE + PIT_CE + ROL_LO) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_LEFT, 0);
repeatAfter(3 * STICK_DELAY_MS);
} else if (rcSticks == THR_CE + YAW_CE + PIT_HI + ROL_CE) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_UP, 0);
repeatAfter(3 * STICK_DELAY_MS);
} else if (rcSticks == THR_CE + YAW_CE + PIT_CE + ROL_HI) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_RIGHT, 0);
repeatAfter(3 * STICK_DELAY_MS);
} else if (rcSticks == THR_CE + YAW_CE + PIT_LO + ROL_CE) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_DOWN, 0);
repeatAfter(3 * STICK_DELAY_MS);
} else if (rcSticks == THR_LO + YAW_CE + PIT_HI + ROL_CE) {
cameraControlKeyPress(CAMERA_CONTROL_KEY_UP, 2000);
}
#endif
}