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LibrePilot/flight/modules/ManualControl/manualcontrol.c

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/**
******************************************************************************
* @addtogroup OpenPilotModules OpenPilot Modules
* @{
* @addtogroup ManualControlModule Manual Control Module
* @brief Provide manual control or allow it alter flight mode.
* @{
*
* Reads in the ManualControlCommand FlightMode setting from receiver then either
* pass the settings straght to ActuatorDesired object (manual mode) or to
* AttitudeDesired object (stabilized mode)
*
* @file manualcontrol.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief ManualControl module. Handles safety R/C link and flight mode.
*
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <openpilot.h>
#include <pios_struct_helper.h>
#include "accessorydesired.h"
#include "actuatordesired.h"
#include "altitudeholddesired.h"
#include "flighttelemetrystats.h"
#include "flightstatus.h"
#include "sanitycheck.h"
#include "manualcontrol.h"
#include "manualcontrolsettings.h"
#include "manualcontrolcommand.h"
#include "positionstate.h"
#include "pathdesired.h"
#include "stabilizationbank.h"
#include "stabilizationdesired.h"
#include "receiveractivity.h"
#include "systemsettings.h"
#include <altitudeholdsettings.h>
#include <taskinfo.h>
#if defined(PIOS_INCLUDE_USB_RCTX)
#include "pios_usb_rctx.h"
#endif /* PIOS_INCLUDE_USB_RCTX */
// Private constants
#if defined(PIOS_MANUAL_STACK_SIZE)
#define STACK_SIZE_BYTES PIOS_MANUAL_STACK_SIZE
#else
#define STACK_SIZE_BYTES 1152
#endif
#define TASK_PRIORITY (tskIDLE_PRIORITY + 3) // 3 = flight control
#define UPDATE_PERIOD_MS 20
#define THROTTLE_FAILSAFE -0.1f
#define ARMED_THRESHOLD 0.50f
// safe band to allow a bit of calibration error or trim offset (in microseconds)
#define CONNECTION_OFFSET 250
// Private types
typedef enum {
ARM_STATE_DISARMED,
ARM_STATE_ARMING_MANUAL,
ARM_STATE_ARMED,
ARM_STATE_DISARMING_MANUAL,
ARM_STATE_DISARMING_TIMEOUT
} ArmState_t;
// Private variables
static xTaskHandle taskHandle;
static ArmState_t armState;
static portTickType lastSysTime;
#ifdef USE_INPUT_LPF
static portTickType lastSysTimeLPF;
static float inputFiltered[MANUALCONTROLSETTINGS_RESPONSETIME_NUMELEM];
#endif
// Private functions
static void updateActuatorDesired(ManualControlCommandData *cmd);
static void updateStabilizationDesired(ManualControlCommandData *cmd, ManualControlSettingsData *settings);
static void updateLandDesired(ManualControlCommandData *cmd, bool changed);
static void altitudeHoldDesired(ManualControlCommandData *cmd, bool changed);
static void updatePathDesired(ManualControlCommandData *cmd, bool changed, bool home);
static void processFlightMode(ManualControlSettingsData *settings, float flightMode, ManualControlCommandData *cmd);
static void processArm(ManualControlCommandData *cmd, ManualControlSettingsData *settings, int8_t armSwitch);
static void setArmedIfChanged(uint8_t val);
static void configurationUpdatedCb(UAVObjEvent *ev);
static void manualControlTask(void *parameters);
static float scaleChannel(int16_t value, int16_t max, int16_t min, int16_t neutral);
static uint32_t timeDifferenceMs(portTickType start_time, portTickType end_time);
static bool okToArm(void);
static bool validInputRange(int16_t min, int16_t max, uint16_t value);
static void applyDeadband(float *value, float deadband);
#ifdef USE_INPUT_LPF
static void applyLPF(float *value, ManualControlSettingsResponseTimeElem channel, ManualControlSettingsData *settings, float dT);
#endif
#define RCVR_ACTIVITY_MONITOR_CHANNELS_PER_GROUP 12
#define RCVR_ACTIVITY_MONITOR_MIN_RANGE 10
struct rcvr_activity_fsm {
ManualControlSettingsChannelGroupsOptions group;
uint16_t prev[RCVR_ACTIVITY_MONITOR_CHANNELS_PER_GROUP];
uint8_t sample_count;
};
static struct rcvr_activity_fsm activity_fsm;
static void resetRcvrActivity(struct rcvr_activity_fsm *fsm);
static bool updateRcvrActivity(struct rcvr_activity_fsm *fsm);
#define assumptions (assumptions1 && assumptions3 && assumptions5 && assumptions_flightmode && assumptions_channelcount)
/**
* Module starting
*/
int32_t ManualControlStart()
{
// Start main task
xTaskCreate(manualControlTask, (signed char *)"ManualControl", STACK_SIZE_BYTES / 4, NULL, TASK_PRIORITY, &taskHandle);
PIOS_TASK_MONITOR_RegisterTask(TASKINFO_RUNNING_MANUALCONTROL, taskHandle);
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_RegisterFlag(PIOS_WDG_MANUAL);
#endif
return 0;
}
/**
* Module initialization
*/
int32_t ManualControlInitialize()
{
/* Check the assumptions about uavobject enum's are correct */
if (!assumptions) {
return -1;
}
AccessoryDesiredInitialize();
ManualControlCommandInitialize();
FlightStatusInitialize();
StabilizationDesiredInitialize();
ReceiverActivityInitialize();
ManualControlSettingsInitialize();
return 0;
}
MODULE_INITCALL(ManualControlInitialize, ManualControlStart);
/**
* Module task
*/
static void manualControlTask(__attribute__((unused)) void *parameters)
{
ManualControlSettingsData settings;
ManualControlCommandData cmd;
FlightStatusData flightStatus;
float flightMode = 0;
uint8_t disconnected_count = 0;
uint8_t connected_count = 0;
// For now manual instantiate extra instances of Accessory Desired. In future should be done dynamically
// this includes not even registering it if not used
AccessoryDesiredCreateInstance();
AccessoryDesiredCreateInstance();
// Run this initially to make sure the configuration is checked
configuration_check();
// Whenever the configuration changes, make sure it is safe to fly
SystemSettingsConnectCallback(configurationUpdatedCb);
ManualControlSettingsConnectCallback(configurationUpdatedCb);
// Whenever the configuration changes, make sure it is safe to fly
// Make sure unarmed on power up
ManualControlCommandGet(&cmd);
FlightStatusGet(&flightStatus);
flightStatus.Armed = FLIGHTSTATUS_ARMED_DISARMED;
armState = ARM_STATE_DISARMED;
/* Initialize the RcvrActivty FSM */
portTickType lastActivityTime = xTaskGetTickCount();
resetRcvrActivity(&activity_fsm);
// Main task loop
lastSysTime = xTaskGetTickCount();
float scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_NUMELEM] = { 0 };
while (1) {
// Wait until next update
vTaskDelayUntil(&lastSysTime, UPDATE_PERIOD_MS / portTICK_RATE_MS);
#ifdef PIOS_INCLUDE_WDG
PIOS_WDG_UpdateFlag(PIOS_WDG_MANUAL);
#endif
// Read settings
ManualControlSettingsGet(&settings);
/* Update channel activity monitor */
if (flightStatus.Armed == ARM_STATE_DISARMED) {
if (updateRcvrActivity(&activity_fsm)) {
/* Reset the aging timer because activity was detected */
lastActivityTime = lastSysTime;
}
}
if (timeDifferenceMs(lastActivityTime, lastSysTime) > 5000) {
resetRcvrActivity(&activity_fsm);
lastActivityTime = lastSysTime;
}
if (ManualControlCommandReadOnly()) {
FlightTelemetryStatsData flightTelemStats;
FlightTelemetryStatsGet(&flightTelemStats);
if (flightTelemStats.Status != FLIGHTTELEMETRYSTATS_STATUS_CONNECTED) {
/* trying to fly via GCS and lost connection. fall back to transmitter */
UAVObjMetadata metadata;
ManualControlCommandGetMetadata(&metadata);
UAVObjSetAccess(&metadata, ACCESS_READWRITE);
ManualControlCommandSetMetadata(&metadata);
}
}
if (!ManualControlCommandReadOnly()) {
bool valid_input_detected = true;
// Read channel values in us
for (uint8_t n = 0; n < MANUALCONTROLSETTINGS_CHANNELGROUPS_NUMELEM && n < MANUALCONTROLCOMMAND_CHANNEL_NUMELEM; ++n) {
extern uint32_t pios_rcvr_group_map[];
if (cast_struct_to_array(settings.ChannelGroups, settings.ChannelGroups.Roll)[n] >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
cmd.Channel[n] = PIOS_RCVR_INVALID;
} else {
cmd.Channel[n] = PIOS_RCVR_Read(pios_rcvr_group_map[
cast_struct_to_array(settings.ChannelGroups, settings.ChannelGroups.Pitch)[n]],
cast_struct_to_array(settings.ChannelNumber, settings.ChannelNumber.Pitch)[n]);
}
// If a channel has timed out this is not valid data and we shouldn't update anything
// until we decide to go to failsafe
if (cmd.Channel[n] == (uint16_t)PIOS_RCVR_TIMEOUT) {
valid_input_detected = false;
} else {
scaledChannel[n] = scaleChannel(cmd.Channel[n],
cast_struct_to_array(settings.ChannelMax, settings.ChannelMax.Pitch)[n],
cast_struct_to_array(settings.ChannelMin, settings.ChannelMin.Pitch)[n],
cast_struct_to_array(settings.ChannelNeutral, settings.ChannelNeutral.Pitch)[n]);
}
}
// Check settings, if error raise alarm
if (settings.ChannelGroups.Roll >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE
|| settings.ChannelGroups.Pitch >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE
|| settings.ChannelGroups.Yaw >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE
|| settings.ChannelGroups.Throttle >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE
||
// Check all channel mappings are valid
cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ROLL] == (uint16_t)PIOS_RCVR_INVALID
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_PITCH] == (uint16_t)PIOS_RCVR_INVALID
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_YAW] == (uint16_t)PIOS_RCVR_INVALID
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_THROTTLE] == (uint16_t)PIOS_RCVR_INVALID
||
// Check the driver exists
cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ROLL] == (uint16_t)PIOS_RCVR_NODRIVER
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_PITCH] == (uint16_t)PIOS_RCVR_NODRIVER
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_YAW] == (uint16_t)PIOS_RCVR_NODRIVER
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_THROTTLE] == (uint16_t)PIOS_RCVR_NODRIVER ||
// Check the FlightModeNumber is valid
settings.FlightModeNumber < 1 || settings.FlightModeNumber > MANUALCONTROLSETTINGS_FLIGHTMODEPOSITION_NUMELEM ||
// Similar checks for FlightMode channel but only if more than one flight mode has been set. Otherwise don't care
((settings.FlightModeNumber > 1)
&& (settings.ChannelGroups.FlightMode >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_FLIGHTMODE] == (uint16_t)PIOS_RCVR_INVALID
|| cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_FLIGHTMODE] == (uint16_t)PIOS_RCVR_NODRIVER))) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_CRITICAL);
cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_FALSE;
ManualControlCommandSet(&cmd);
// Need to do this here since we don't process armed status. Since this shouldn't happen in flight (changed config)
// immediately disarm
setArmedIfChanged(FLIGHTSTATUS_ARMED_DISARMED);
continue;
}
// decide if we have valid manual input or not
valid_input_detected &= validInputRange(settings.ChannelMin.Throttle,
settings.ChannelMax.Throttle, cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_THROTTLE])
&& validInputRange(settings.ChannelMin.Roll,
settings.ChannelMax.Roll, cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ROLL])
&& validInputRange(settings.ChannelMin.Yaw,
settings.ChannelMax.Yaw, cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_YAW])
&& validInputRange(settings.ChannelMin.Pitch,
settings.ChannelMax.Pitch, cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_PITCH]);
// Implement hysteresis loop on connection status
if (valid_input_detected && (++connected_count > 10)) {
cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_TRUE;
connected_count = 0;
disconnected_count = 0;
} else if (!valid_input_detected && (++disconnected_count > 10)) {
cmd.Connected = MANUALCONTROLCOMMAND_CONNECTED_FALSE;
connected_count = 0;
disconnected_count = 0;
}
int8_t armSwitch = 0;
if (cmd.Connected == MANUALCONTROLCOMMAND_CONNECTED_FALSE) {
cmd.Throttle = -1; // Shut down engine with no control
cmd.Roll = 0;
cmd.Yaw = 0;
cmd.Pitch = 0;
cmd.Collective = 0;
if (settings.FailsafeBehavior != MANUALCONTROLSETTINGS_FAILSAFEBEHAVIOR_NONE) {
FlightStatusGet(&flightStatus);
cmd.FlightModeSwitchPosition = (uint8_t)settings.FailsafeBehavior - 1;
flightStatus.FlightMode = settings.FlightModePosition[settings.FailsafeBehavior - 1];
FlightStatusSet(&flightStatus);
}
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
AccessoryDesiredData accessory;
// Set Accessory 0
if (settings.ChannelGroups.Accessory0 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = 0;
if (AccessoryDesiredInstSet(0, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
// Set Accessory 1
if (settings.ChannelGroups.Accessory1 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = 0;
if (AccessoryDesiredInstSet(1, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
// Set Accessory 2
if (settings.ChannelGroups.Accessory2 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = 0;
if (AccessoryDesiredInstSet(2, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
} else if (valid_input_detected) {
AlarmsClear(SYSTEMALARMS_ALARM_MANUALCONTROL);
// Scale channels to -1 -> +1 range
cmd.Roll = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ROLL];
cmd.Pitch = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_PITCH];
cmd.Yaw = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_YAW];
cmd.Throttle = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_THROTTLE];
flightMode = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_FLIGHTMODE];
// Apply deadband for Roll/Pitch/Yaw stick inputs
if (settings.Deadband > 0.0f) {
applyDeadband(&cmd.Roll, settings.Deadband);
applyDeadband(&cmd.Pitch, settings.Deadband);
applyDeadband(&cmd.Yaw, settings.Deadband);
}
#ifdef USE_INPUT_LPF
// Apply Low Pass Filter to input channels, time delta between calls in ms
portTickType thisSysTime = xTaskGetTickCount();
float dT = (thisSysTime > lastSysTimeLPF) ?
(float)((thisSysTime - lastSysTimeLPF) * portTICK_RATE_MS) :
(float)UPDATE_PERIOD_MS;
lastSysTimeLPF = thisSysTime;
applyLPF(&cmd.Roll, MANUALCONTROLSETTINGS_RESPONSETIME_ROLL, &settings, dT);
applyLPF(&cmd.Pitch, MANUALCONTROLSETTINGS_RESPONSETIME_PITCH, &settings, dT);
applyLPF(&cmd.Yaw, MANUALCONTROLSETTINGS_RESPONSETIME_YAW, &settings, dT);
#endif // USE_INPUT_LPF
if (cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_COLLECTIVE] != (uint16_t)PIOS_RCVR_INVALID
&& cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_COLLECTIVE] != (uint16_t)PIOS_RCVR_NODRIVER
&& cmd.Channel[MANUALCONTROLSETTINGS_CHANNELGROUPS_COLLECTIVE] != (uint16_t)PIOS_RCVR_TIMEOUT) {
cmd.Collective = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_COLLECTIVE];
}
AccessoryDesiredData accessory;
// Set Accessory 0
if (settings.ChannelGroups.Accessory0 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ACCESSORY0];
#ifdef USE_INPUT_LPF
applyLPF(&accessory.AccessoryVal, MANUALCONTROLSETTINGS_RESPONSETIME_ACCESSORY0, &settings, dT);
#endif
if (settings.Arming == MANUALCONTROLSETTINGS_ARMING_ACCESSORY0) {
if (accessory.AccessoryVal > ARMED_THRESHOLD) {
armSwitch = 1;
} else if (accessory.AccessoryVal < -ARMED_THRESHOLD) {
armSwitch = -1;
}
}
if (AccessoryDesiredInstSet(0, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
// Set Accessory 1
if (settings.ChannelGroups.Accessory1 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ACCESSORY1];
#ifdef USE_INPUT_LPF
applyLPF(&accessory.AccessoryVal, MANUALCONTROLSETTINGS_RESPONSETIME_ACCESSORY1, &settings, dT);
#endif
if (settings.Arming == MANUALCONTROLSETTINGS_ARMING_ACCESSORY1) {
if (accessory.AccessoryVal > ARMED_THRESHOLD) {
armSwitch = 1;
} else if (accessory.AccessoryVal < -ARMED_THRESHOLD) {
armSwitch = -1;
}
}
if (AccessoryDesiredInstSet(1, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
// Set Accessory 2
if (settings.ChannelGroups.Accessory2 != MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
accessory.AccessoryVal = scaledChannel[MANUALCONTROLSETTINGS_CHANNELGROUPS_ACCESSORY2];
#ifdef USE_INPUT_LPF
applyLPF(&accessory.AccessoryVal, MANUALCONTROLSETTINGS_RESPONSETIME_ACCESSORY2, &settings, dT);
#endif
if (settings.Arming == MANUALCONTROLSETTINGS_ARMING_ACCESSORY2) {
if (accessory.AccessoryVal > ARMED_THRESHOLD) {
armSwitch = 1;
} else if (accessory.AccessoryVal < -ARMED_THRESHOLD) {
armSwitch = -1;
}
}
if (AccessoryDesiredInstSet(2, &accessory) != 0) {
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_WARNING);
}
}
processFlightMode(&settings, flightMode, &cmd);
}
// Process arming outside conditional so system will disarm when disconnected
processArm(&cmd, &settings, armSwitch);
// Update cmd object
ManualControlCommandSet(&cmd);
#if defined(PIOS_INCLUDE_USB_RCTX)
if (pios_usb_rctx_id) {
PIOS_USB_RCTX_Update(pios_usb_rctx_id,
cmd.Channel,
cast_struct_to_array(settings.ChannelMin, settings.ChannelMin.Roll),
cast_struct_to_array(settings.ChannelMax, settings.ChannelMax.Roll),
NELEMENTS(cmd.Channel));
}
#endif /* PIOS_INCLUDE_USB_RCTX */
} else {
ManualControlCommandGet(&cmd); /* Under GCS control */
}
FlightStatusGet(&flightStatus);
// Depending on the mode update the Stabilization or Actuator objects
static uint8_t lastFlightMode = FLIGHTSTATUS_FLIGHTMODE_MANUAL;
switch (PARSE_FLIGHT_MODE(flightStatus.FlightMode)) {
case FLIGHTMODE_UNDEFINED:
// This reflects a bug in the code architecture!
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_CRITICAL);
break;
case FLIGHTMODE_MANUAL:
updateActuatorDesired(&cmd);
break;
case FLIGHTMODE_STABILIZED:
updateStabilizationDesired(&cmd, &settings);
break;
case FLIGHTMODE_TUNING:
// Tuning takes settings directly from manualcontrolcommand. No need to
// call anything else. This just avoids errors.
break;
case FLIGHTMODE_GUIDANCE:
switch (flightStatus.FlightMode) {
case FLIGHTSTATUS_FLIGHTMODE_ALTITUDEHOLD:
case FLIGHTSTATUS_FLIGHTMODE_ALTITUDEVARIO:
altitudeHoldDesired(&cmd, lastFlightMode != flightStatus.FlightMode);
break;
case FLIGHTSTATUS_FLIGHTMODE_POSITIONHOLD:
case FLIGHTSTATUS_FLIGHTMODE_POI:
updatePathDesired(&cmd, lastFlightMode != flightStatus.FlightMode, false);
break;
case FLIGHTSTATUS_FLIGHTMODE_RETURNTOBASE:
updatePathDesired(&cmd, lastFlightMode != flightStatus.FlightMode, true);
break;
case FLIGHTSTATUS_FLIGHTMODE_PATHPLANNER:
// No need to call anything. This just avoids errors.
break;
case FLIGHTSTATUS_FLIGHTMODE_LAND:
updateLandDesired(&cmd, lastFlightMode != flightStatus.FlightMode);
break;
default:
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_CRITICAL);
}
break;
}
lastFlightMode = flightStatus.FlightMode;
}
}
static void resetRcvrActivity(struct rcvr_activity_fsm *fsm)
{
ReceiverActivityData data;
bool updated = false;
/* Clear all channel activity flags */
ReceiverActivityGet(&data);
if (data.ActiveGroup != RECEIVERACTIVITY_ACTIVEGROUP_NONE && data.ActiveChannel != 255) {
data.ActiveGroup = RECEIVERACTIVITY_ACTIVEGROUP_NONE;
data.ActiveChannel = 255;
updated = true;
}
if (updated) {
ReceiverActivitySet(&data);
}
/* Reset the FSM state */
fsm->group = 0;
fsm->sample_count = 0;
}
static void updateRcvrActivitySample(uint32_t rcvr_id, uint16_t samples[], uint8_t max_channels)
{
for (uint8_t channel = 1; channel <= max_channels; channel++) {
// Subtract 1 because channels are 1 indexed
samples[channel - 1] = PIOS_RCVR_Read(rcvr_id, channel);
}
}
static bool updateRcvrActivityCompare(uint32_t rcvr_id, struct rcvr_activity_fsm *fsm)
{
bool activity_updated = false;
/* Compare the current value to the previous sampled value */
for (uint8_t channel = 1; channel <= RCVR_ACTIVITY_MONITOR_CHANNELS_PER_GROUP; channel++) {
uint16_t delta;
uint16_t prev = fsm->prev[channel - 1]; // Subtract 1 because channels are 1 indexed
uint16_t curr = PIOS_RCVR_Read(rcvr_id, channel);
if (curr > prev) {
delta = curr - prev;
} else {
delta = prev - curr;
}
if (delta > RCVR_ACTIVITY_MONITOR_MIN_RANGE) {
/* Mark this channel as active */
ReceiverActivityActiveGroupOptions group;
/* Don't assume manualcontrolsettings and receiveractivity are in the same order. */
switch (fsm->group) {
case MANUALCONTROLSETTINGS_CHANNELGROUPS_PWM:
group = RECEIVERACTIVITY_ACTIVEGROUP_PWM;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_PPM:
group = RECEIVERACTIVITY_ACTIVEGROUP_PPM;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_DSMMAINPORT:
group = RECEIVERACTIVITY_ACTIVEGROUP_DSMMAINPORT;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_DSMFLEXIPORT:
group = RECEIVERACTIVITY_ACTIVEGROUP_DSMFLEXIPORT;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_SBUS:
group = RECEIVERACTIVITY_ACTIVEGROUP_SBUS;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_GCS:
group = RECEIVERACTIVITY_ACTIVEGROUP_GCS;
break;
case MANUALCONTROLSETTINGS_CHANNELGROUPS_OPLINK:
group = RECEIVERACTIVITY_ACTIVEGROUP_OPLINK;
break;
default:
PIOS_Assert(0);
break;
}
ReceiverActivityActiveGroupSet((uint8_t *)&group);
ReceiverActivityActiveChannelSet(&channel);
activity_updated = true;
}
}
return activity_updated;
}
static bool updateRcvrActivity(struct rcvr_activity_fsm *fsm)
{
bool activity_updated = false;
if (fsm->group >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
/* We're out of range, reset things */
resetRcvrActivity(fsm);
}
extern uint32_t pios_rcvr_group_map[];
if (!pios_rcvr_group_map[fsm->group]) {
/* Unbound group, skip it */
goto group_completed;
}
if (fsm->sample_count == 0) {
/* Take a sample of each channel in this group */
updateRcvrActivitySample(pios_rcvr_group_map[fsm->group], fsm->prev, NELEMENTS(fsm->prev));
fsm->sample_count++;
return false;
}
/* Compare with previous sample */
activity_updated = updateRcvrActivityCompare(pios_rcvr_group_map[fsm->group], fsm);
group_completed:
/* Reset the sample counter */
fsm->sample_count = 0;
/* Find the next active group, but limit search so we can't loop forever here */
for (uint8_t i = 0; i < MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE; i++) {
/* Move to the next group */
fsm->group++;
if (fsm->group >= MANUALCONTROLSETTINGS_CHANNELGROUPS_NONE) {
/* Wrap back to the first group */
fsm->group = 0;
}
if (pios_rcvr_group_map[fsm->group]) {
/*
* Found an active group, take a sample here to avoid an
* extra 20ms delay in the main thread so we can speed up
* this algorithm.
*/
updateRcvrActivitySample(pios_rcvr_group_map[fsm->group], fsm->prev, NELEMENTS(fsm->prev));
fsm->sample_count++;
break;
}
}
return activity_updated;
}
static void updateActuatorDesired(ManualControlCommandData *cmd)
{
ActuatorDesiredData actuator;
ActuatorDesiredGet(&actuator);
actuator.Roll = cmd->Roll;
actuator.Pitch = cmd->Pitch;
actuator.Yaw = cmd->Yaw;
actuator.Throttle = (cmd->Throttle < 0) ? -1 : cmd->Throttle;
ActuatorDesiredSet(&actuator);
}
static void updateStabilizationDesired(ManualControlCommandData *cmd, ManualControlSettingsData *settings)
{
StabilizationDesiredData stabilization;
StabilizationDesiredGet(&stabilization);
StabilizationBankData stabSettings;
StabilizationBankGet(&stabSettings);
uint8_t *stab_settings;
FlightStatusData flightStatus;
FlightStatusGet(&flightStatus);
switch (flightStatus.FlightMode) {
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED1:
stab_settings = cast_struct_to_array(settings->Stabilization1Settings, settings->Stabilization1Settings.Roll);
break;
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED2:
stab_settings = cast_struct_to_array(settings->Stabilization2Settings, settings->Stabilization2Settings.Roll);
break;
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED3:
stab_settings = cast_struct_to_array(settings->Stabilization3Settings, settings->Stabilization3Settings.Roll);
break;
default:
// Major error, this should not occur because only enter this block when one of these is true
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_CRITICAL);
return;
}
stabilization.Roll =
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_NONE) ? cmd->Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATE) ? cmd->Roll * stabSettings.ManualRate.Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Roll * stabSettings.ManualRate.Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Roll * stabSettings.RollMax :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Roll * stabSettings.ManualRate.Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_VIRTUALBAR) ? cmd->Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATTITUDE) ? cmd->Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYRATE) ? cmd->Roll * stabSettings.ManualRate.Roll :
(stab_settings[0] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYATTITUDE) ? cmd->Roll * stabSettings.RollMax :
0; // this is an invalid mode
stabilization.Pitch =
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_NONE) ? cmd->Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATE) ? cmd->Pitch * stabSettings.ManualRate.Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Pitch * stabSettings.ManualRate.Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Pitch * stabSettings.PitchMax :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Pitch * stabSettings.ManualRate.Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_VIRTUALBAR) ? cmd->Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATTITUDE) ? cmd->Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYRATE) ? cmd->Pitch * stabSettings.ManualRate.Pitch :
(stab_settings[1] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYATTITUDE) ? cmd->Pitch * stabSettings.PitchMax :
0; // this is an invalid mode
// TOOD: Add assumption about order of stabilization desired and manual control stabilization mode fields having same order
stabilization.StabilizationMode.Roll = stab_settings[0];
stabilization.StabilizationMode.Pitch = stab_settings[1];
// Other axes (yaw) cannot be Rattitude, so use Rate
// Should really do this for Attitude mode as well?
if (stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATTITUDE) {
stabilization.StabilizationMode.Yaw = STABILIZATIONDESIRED_STABILIZATIONMODE_RATE;
stabilization.Yaw = cmd->Yaw * stabSettings.ManualRate.Yaw;
} else {
stabilization.StabilizationMode.Yaw = stab_settings[2];
stabilization.Yaw =
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_NONE) ? cmd->Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATE) ? cmd->Yaw * stabSettings.ManualRate.Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_WEAKLEVELING) ? cmd->Yaw * stabSettings.ManualRate.Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_ATTITUDE) ? cmd->Yaw * stabSettings.YawMax :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_AXISLOCK) ? cmd->Yaw * stabSettings.ManualRate.Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_VIRTUALBAR) ? cmd->Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_RATTITUDE) ? cmd->Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYRATE) ? cmd->Yaw * stabSettings.ManualRate.Yaw :
(stab_settings[2] == STABILIZATIONDESIRED_STABILIZATIONMODE_RELAYATTITUDE) ? cmd->Yaw * stabSettings.YawMax :
0; // this is an invalid mode
}
stabilization.Throttle = (cmd->Throttle < 0) ? -1 : cmd->Throttle;
StabilizationDesiredSet(&stabilization);
}
#if defined(REVOLUTION)
// TODO: Need compile flag to exclude this from copter control
/**
* @brief Update the position desired to current location when
* enabled and allow the waypoint to be moved by transmitter
*/
static void updatePathDesired(__attribute__((unused)) ManualControlCommandData *cmd, bool changed, bool home)
{
/*
static portTickType lastSysTime;
portTickType thisSysTime = xTaskGetTickCount();
dT = ((thisSysTime == lastSysTime)? 0.001f : (thisSysTime - lastSysTime) * portTICK_RATE_MS * 0.001f);
lastSysTime = thisSysTime;
*/
if (home && changed) {
// Simple Return To Base mode - keep altitude the same, fly to home position
PositionStateData positionState;
PositionStateGet(&positionState);
ManualControlSettingsData settings;
ManualControlSettingsGet(&settings);
PathDesiredData pathDesired;
PathDesiredGet(&pathDesired);
pathDesired.Start.North = 0;
pathDesired.Start.East = 0;
pathDesired.Start.Down = positionState.Down - settings.ReturnToHomeAltitudeOffset;
pathDesired.End.North = 0;
pathDesired.End.East = 0;
pathDesired.End.Down = positionState.Down - settings.ReturnToHomeAltitudeOffset;
pathDesired.StartingVelocity = 1;
pathDesired.EndingVelocity = 0;
pathDesired.Mode = PATHDESIRED_MODE_FLYENDPOINT;
PathDesiredSet(&pathDesired);
} else if (changed) {
// After not being in this mode for a while init at current height
PositionStateData positionState;
PositionStateGet(&positionState);
PathDesiredData pathDesired;
PathDesiredGet(&pathDesired);
pathDesired.Start.North = positionState.North;
pathDesired.Start.East = positionState.East;
pathDesired.Start.Down = positionState.Down;
pathDesired.End.North = positionState.North;
pathDesired.End.East = positionState.East;
pathDesired.End.Down = positionState.Down;
pathDesired.StartingVelocity = 1;
pathDesired.EndingVelocity = 0;
pathDesired.Mode = PATHDESIRED_MODE_FLYENDPOINT;
PathDesiredSet(&pathDesired);
/* Disable this section, until such time as proper discussion can be had about how to implement it for all types of crafts.
} else {
PathDesiredData pathDesired;
PathDesiredGet(&pathDesired);
pathDesired.End[PATHDESIRED_END_NORTH] += dT * -cmd->Pitch;
pathDesired.End[PATHDESIRED_END_EAST] += dT * cmd->Roll;
pathDesired.Mode = PATHDESIRED_MODE_FLYENDPOINT;
PathDesiredSet(&pathDesired);
*/
}
}
static void updateLandDesired(__attribute__((unused)) ManualControlCommandData *cmd, bool changed)
{
/*
static portTickType lastSysTime;
portTickType thisSysTime;
float dT;
thisSysTime = xTaskGetTickCount();
dT = ((thisSysTime == lastSysTime)? 0.001f : (thisSysTime - lastSysTime) * portTICK_RATE_MS * 0.001f);
lastSysTime = thisSysTime;
*/
PositionStateData positionState;
PositionStateGet(&positionState);
PathDesiredData pathDesired;
PathDesiredGet(&pathDesired);
if (changed) {
// After not being in this mode for a while init at current height
pathDesired.Start.North = positionState.North;
pathDesired.Start.East = positionState.East;
pathDesired.Start.Down = positionState.Down;
pathDesired.End.North = positionState.North;
pathDesired.End.East = positionState.East;
pathDesired.End.Down = positionState.Down;
pathDesired.StartingVelocity = 1;
pathDesired.EndingVelocity = 0;
pathDesired.Mode = PATHDESIRED_MODE_FLYENDPOINT;
}
pathDesired.End.Down = positionState.Down + 5;
PathDesiredSet(&pathDesired);
}
/**
* @brief Update the altitude desired to current altitude when
* enabled and enable altitude mode for stabilization
* @todo: Need compile flag to exclude this from copter control
*/
static void altitudeHoldDesired(ManualControlCommandData *cmd, bool changed)
{
const float DEADBAND = 0.20f;
const float DEADBAND_HIGH = 1.0f / 2 + DEADBAND / 2;
const float DEADBAND_LOW = 1.0f / 2 - DEADBAND / 2;
// this is the max speed in m/s at the extents of throttle
float throttleRate;
uint8_t throttleExp;
static uint8_t flightMode;
static bool newaltitude = true;
FlightStatusFlightModeGet(&flightMode);
AltitudeHoldDesiredData altitudeHoldDesiredData;
AltitudeHoldDesiredGet(&altitudeHoldDesiredData);
AltitudeHoldSettingsThrottleExpGet(&throttleExp);
AltitudeHoldSettingsThrottleRateGet(&throttleRate);
StabilizationBankData stabSettings;
StabilizationBankGet(&stabSettings);
PositionStateData posState;
PositionStateGet(&posState);
altitudeHoldDesiredData.Roll = cmd->Roll * stabSettings.RollMax;
altitudeHoldDesiredData.Pitch = cmd->Pitch * stabSettings.PitchMax;
altitudeHoldDesiredData.Yaw = cmd->Yaw * stabSettings.ManualRate.Yaw;
if (changed) {
newaltitude = true;
}
uint8_t cutOff;
AltitudeHoldSettingsCutThrottleWhenZeroGet(&cutOff);
if (cutOff && cmd->Throttle < 0) {
// Cut throttle if desired
altitudeHoldDesiredData.SetPoint = cmd->Throttle;
altitudeHoldDesiredData.ControlMode = ALTITUDEHOLDDESIRED_CONTROLMODE_THROTTLE;
newaltitude = true;
} else if (flightMode == FLIGHTSTATUS_FLIGHTMODE_ALTITUDEVARIO && cmd->Throttle > DEADBAND_HIGH) {
// being the two band symmetrical I can divide by DEADBAND_LOW to scale it to a value betweeon 0 and 1
// then apply an "exp" f(x,k) = (k*x*x*x + (255-k)*x) / 255
altitudeHoldDesiredData.SetPoint = -((throttleExp * powf((cmd->Throttle - DEADBAND_HIGH) / (DEADBAND_LOW), 3) + (255 - throttleExp) * (cmd->Throttle - DEADBAND_HIGH) / DEADBAND_LOW) / 255 * throttleRate);
altitudeHoldDesiredData.ControlMode = ALTITUDEHOLDDESIRED_CONTROLMODE_VELOCITY;
newaltitude = true;
} else if (flightMode == FLIGHTSTATUS_FLIGHTMODE_ALTITUDEVARIO && cmd->Throttle < DEADBAND_LOW) {
altitudeHoldDesiredData.SetPoint = -(-(throttleExp * powf((DEADBAND_LOW - (cmd->Throttle < 0 ? 0 : cmd->Throttle)) / DEADBAND_LOW, 3) + (255 - throttleExp) * (DEADBAND_LOW - cmd->Throttle) / DEADBAND_LOW) / 255 * throttleRate);
altitudeHoldDesiredData.ControlMode = ALTITUDEHOLDDESIRED_CONTROLMODE_VELOCITY;
newaltitude = true;
} else if (newaltitude == true) {
altitudeHoldDesiredData.SetPoint = posState.Down;
altitudeHoldDesiredData.ControlMode = ALTITUDEHOLDDESIRED_CONTROLMODE_ALTITUDE;
newaltitude = false;
}
AltitudeHoldDesiredSet(&altitudeHoldDesiredData);
}
#else /* if defined(REVOLUTION) */
// TODO: These functions should never be accessible on CC. Any configuration that
// could allow them to be called should already throw an error to prevent this happening
// in flight
static void updatePathDesired(__attribute__((unused)) ManualControlCommandData *cmd,
__attribute__((unused)) bool changed,
__attribute__((unused)) bool home)
{
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_ERROR);
}
static void updateLandDesired(__attribute__((unused)) ManualControlCommandData *cmd,
__attribute__((unused)) bool changed)
{
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_ERROR);
}
static void altitudeHoldDesired(__attribute__((unused)) ManualControlCommandData *cmd,
__attribute__((unused)) bool changed)
{
AlarmsSet(SYSTEMALARMS_ALARM_MANUALCONTROL, SYSTEMALARMS_ALARM_ERROR);
}
#endif /* if defined(REVOLUTION) */
/**
* Convert channel from servo pulse duration (microseconds) to scaled -1/+1 range.
*/
static float scaleChannel(int16_t value, int16_t max, int16_t min, int16_t neutral)
{
float valueScaled;
// Scale
if ((max > min && value >= neutral) || (min > max && value <= neutral)) {
if (max != neutral) {
valueScaled = (float)(value - neutral) / (float)(max - neutral);
} else {
valueScaled = 0;
}
} else {
if (min != neutral) {
valueScaled = (float)(value - neutral) / (float)(neutral - min);
} else {
valueScaled = 0;
}
}
// Bound
if (valueScaled > 1.0f) {
valueScaled = 1.0f;
} else if (valueScaled < -1.0f) {
valueScaled = -1.0f;
}
return valueScaled;
}
static uint32_t timeDifferenceMs(portTickType start_time, portTickType end_time)
{
return (end_time - start_time) * portTICK_RATE_MS;
}
/**
* @brief Determine if the aircraft is safe to arm
* @returns True if safe to arm, false otherwise
*/
static bool okToArm(void)
{
// update checks
configuration_check();
// read alarms
SystemAlarmsData alarms;
SystemAlarmsGet(&alarms);
// Check each alarm
for (int i = 0; i < SYSTEMALARMS_ALARM_NUMELEM; i++) {
if (cast_struct_to_array(alarms.Alarm, alarms.Alarm.Actuator)[i] >= SYSTEMALARMS_ALARM_ERROR) { // found an alarm thats set
if (i == SYSTEMALARMS_ALARM_GPS || i == SYSTEMALARMS_ALARM_TELEMETRY) {
continue;
}
return false;
}
}
uint8_t flightMode;
FlightStatusFlightModeGet(&flightMode);
switch (flightMode) {
case FLIGHTSTATUS_FLIGHTMODE_MANUAL:
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED1:
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED2:
case FLIGHTSTATUS_FLIGHTMODE_STABILIZED3:
return true;
default:
return false;
}
}
/**
* @brief Determine if the aircraft is forced to disarm by an explicit alarm
* @returns True if safe to arm, false otherwise
*/
static bool forcedDisArm(void)
{
// read alarms
SystemAlarmsData alarms;
SystemAlarmsGet(&alarms);
if (alarms.Alarm.Guidance == SYSTEMALARMS_ALARM_CRITICAL) {
return true;
}
return false;
}
/**
* @brief Update the flightStatus object only if value changed. Reduces callbacks
* @param[in] val The new value
*/
static void setArmedIfChanged(uint8_t val)
{
FlightStatusData flightStatus;
FlightStatusGet(&flightStatus);
if (flightStatus.Armed != val) {
flightStatus.Armed = val;
FlightStatusSet(&flightStatus);
}
}
/**
* @brief Process the inputs and determine whether to arm or not
* @param[out] cmd The structure to set the armed in
* @param[in] settings Settings indicating the necessary position
*/
static void processArm(ManualControlCommandData *cmd, ManualControlSettingsData *settings, int8_t armSwitch)
{
bool lowThrottle = cmd->Throttle < 0;
/**
* do NOT check throttle if disarming via switch, must be instant
*/
switch (settings->Arming) {
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY0:
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY1:
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY2:
if (armSwitch < 0) {
lowThrottle = true;
}
break;
default:
break;
}
if (forcedDisArm()) {
// PathPlanner forces explicit disarming due to error condition (crash, impact, fire, ...)
setArmedIfChanged(FLIGHTSTATUS_ARMED_DISARMED);
return;
}
if (settings->Arming == MANUALCONTROLSETTINGS_ARMING_ALWAYSDISARMED) {
// In this configuration we always disarm
setArmedIfChanged(FLIGHTSTATUS_ARMED_DISARMED);
} else {
// Not really needed since this function not called when disconnected
if (cmd->Connected == MANUALCONTROLCOMMAND_CONNECTED_FALSE) {
lowThrottle = true;
}
// The throttle is not low, in case we where arming or disarming, abort
if (!lowThrottle) {
switch (armState) {
case ARM_STATE_DISARMING_MANUAL:
case ARM_STATE_DISARMING_TIMEOUT:
armState = ARM_STATE_ARMED;
break;
case ARM_STATE_ARMING_MANUAL:
armState = ARM_STATE_DISARMED;
break;
default:
// Nothing needs to be done in the other states
break;
}
return;
}
// The rest of these cases throttle is low
if (settings->Arming == MANUALCONTROLSETTINGS_ARMING_ALWAYSARMED) {
// In this configuration, we go into armed state as soon as the throttle is low, never disarm
setArmedIfChanged(FLIGHTSTATUS_ARMED_ARMED);
return;
}
// When the configuration is not "Always armed" and no "Always disarmed",
// the state will not be changed when the throttle is not low
static portTickType armedDisarmStart;
float armingInputLevel = 0;
// Calc channel see assumptions7
switch (settings->Arming) {
case MANUALCONTROLSETTINGS_ARMING_ROLLLEFT:
armingInputLevel = 1.0f * cmd->Roll;
break;
case MANUALCONTROLSETTINGS_ARMING_ROLLRIGHT:
armingInputLevel = -1.0f * cmd->Roll;
break;
case MANUALCONTROLSETTINGS_ARMING_PITCHFORWARD:
armingInputLevel = 1.0f * cmd->Pitch;
break;
case MANUALCONTROLSETTINGS_ARMING_PITCHAFT:
armingInputLevel = -1.0f * cmd->Pitch;
break;
case MANUALCONTROLSETTINGS_ARMING_YAWLEFT:
armingInputLevel = 1.0f * cmd->Yaw;
break;
case MANUALCONTROLSETTINGS_ARMING_YAWRIGHT:
armingInputLevel = -1.0f * cmd->Yaw;
break;
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY0:
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY1:
case MANUALCONTROLSETTINGS_ARMING_ACCESSORY2:
armingInputLevel = -1.0f * (float)armSwitch;
break;
}
bool manualArm = false;
bool manualDisarm = false;
if (armingInputLevel <= -ARMED_THRESHOLD) {
manualArm = true;
} else if (armingInputLevel >= +ARMED_THRESHOLD) {
manualDisarm = true;
}
switch (armState) {
case ARM_STATE_DISARMED:
setArmedIfChanged(FLIGHTSTATUS_ARMED_DISARMED);
// only allow arming if it's OK too
if (manualArm && okToArm()) {
armedDisarmStart = lastSysTime;
armState = ARM_STATE_ARMING_MANUAL;
}
break;
case ARM_STATE_ARMING_MANUAL:
setArmedIfChanged(FLIGHTSTATUS_ARMED_ARMING);
if (manualArm && (timeDifferenceMs(armedDisarmStart, lastSysTime) > settings->ArmingSequenceTime)) {
armState = ARM_STATE_ARMED;
} else if (!manualArm) {
armState = ARM_STATE_DISARMED;
}
break;
case ARM_STATE_ARMED:
// When we get here, the throttle is low,
// we go immediately to disarming due to timeout, also when the disarming mechanism is not enabled
armedDisarmStart = lastSysTime;
armState = ARM_STATE_DISARMING_TIMEOUT;
setArmedIfChanged(FLIGHTSTATUS_ARMED_ARMED);
break;
case ARM_STATE_DISARMING_TIMEOUT:
// We get here when armed while throttle low, even when the arming timeout is not enabled
if ((settings->ArmedTimeout != 0) && (timeDifferenceMs(armedDisarmStart, lastSysTime) > settings->ArmedTimeout)) {
armState = ARM_STATE_DISARMED;
}
// Switch to disarming due to manual control when needed
if (manualDisarm) {
armedDisarmStart = lastSysTime;
armState = ARM_STATE_DISARMING_MANUAL;
}
break;
case ARM_STATE_DISARMING_MANUAL:
if (manualDisarm && (timeDifferenceMs(armedDisarmStart, lastSysTime) > settings->DisarmingSequenceTime)) {
armState = ARM_STATE_DISARMED;
} else if (!manualDisarm) {
armState = ARM_STATE_ARMED;
}
break;
} // End Switch
}
}
/**
* @brief Determine which of N positions the flight mode switch is in and set flight mode accordingly
* @param[out] cmd Pointer to the command structure to set the flight mode in
* @param[in] settings The settings which indicate which position is which mode
* @param[in] flightMode the value of the switch position
*/
static void processFlightMode(ManualControlSettingsData *settings, float flightMode, ManualControlCommandData *cmd)
{
FlightStatusData flightStatus;
FlightStatusGet(&flightStatus);
// Convert flightMode value into the switch position in the range [0..N-1]
uint8_t pos = ((int16_t)(flightMode * 256.0f) + 256) * settings->FlightModeNumber >> 9;
if (pos >= settings->FlightModeNumber) {
pos = settings->FlightModeNumber - 1;
}
cmd->FlightModeSwitchPosition = pos;
uint8_t newMode = settings->FlightModePosition[pos];
if (flightStatus.FlightMode != newMode) {
flightStatus.FlightMode = newMode;
FlightStatusSet(&flightStatus);
}
}
/**
* @brief Determine if the manual input value is within acceptable limits
* @returns return TRUE if so, otherwise return FALSE
*/
bool validInputRange(int16_t min, int16_t max, uint16_t value)
{
if (min > max) {
int16_t tmp = min;
min = max;
max = tmp;
}
return value >= min - CONNECTION_OFFSET && value <= max + CONNECTION_OFFSET;
}
/**
* @brief Apply deadband to Roll/Pitch/Yaw channels
*/
static void applyDeadband(float *value, float deadband)
{
if (fabsf(*value) < deadband) {
*value = 0.0f;
} else if (*value > 0.0f) {
*value -= deadband;
} else {
*value += deadband;
}
}
#ifdef USE_INPUT_LPF
/**
* @brief Apply Low Pass Filter to Throttle/Roll/Pitch/Yaw or Accessory channel
*/
static void applyLPF(float *value, ManualControlSettingsResponseTimeElem channel, ManualControlSettingsData *settings, float dT)
{
if (cast_struct_to_array(settings->ResponseTime, settings->ResponseTime.Roll)[channel]) {
float rt = (float)cast_struct_to_array(settings->ResponseTime, settings->ResponseTime.Roll)[channel];
inputFiltered[channel] = ((rt * inputFiltered[channel]) + (dT * (*value))) / (rt + dT);
*value = inputFiltered[channel];
}
}
#endif // USE_INPUT_LPF
/**
* Called whenever a critical configuration component changes
*/
static void configurationUpdatedCb(__attribute__((unused)) UAVObjEvent *ev)
{
configuration_check();
}
/**
* @}
* @}
*/
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