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ardupilot/libraries/AP_RangeFinder/AP_RangeFinder.h

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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/>.
*/
#pragma once
#include "AP_RangeFinder_config.h"
#include <AP_Common/AP_Common.h>
#include <AP_HAL/AP_HAL_Boards.h>
#include <AP_HAL/Semaphores.h>
#include <AP_Param/AP_Param.h>
#include <GCS_MAVLink/GCS_MAVLink.h>
#include <AP_MSP/msp.h>
#include "AP_RangeFinder_Params.h"
// Maximum number of range finder instances available on this platform
#ifndef RANGEFINDER_MAX_INSTANCES
#if AP_RANGEFINDER_ENABLED
#define RANGEFINDER_MAX_INSTANCES 10
#else
#define RANGEFINDER_MAX_INSTANCES 1
#endif
#endif
#define RANGEFINDER_GROUND_CLEARANCE_CM_DEFAULT 10
#define RANGEFINDER_PREARM_ALT_MAX_CM 200
#if CONFIG_HAL_BOARD == HAL_BOARD_SITL
#define RANGEFINDER_PREARM_REQUIRED_CHANGE_CM 0
#else
#define RANGEFINDER_PREARM_REQUIRED_CHANGE_CM 50
#endif
class AP_RangeFinder_Backend;
class RangeFinder
{
friend class AP_RangeFinder_Backend;
//UAVCAN drivers are initialised in the Backend, hence list of drivers is needed there.
friend class AP_RangeFinder_DroneCAN;
public:
RangeFinder();
/* Do not allow copies */
CLASS_NO_COPY(RangeFinder);
// RangeFinder driver types
enum class Type {
NONE = 0,
#if AP_RANGEFINDER_ANALOG_ENABLED
ANALOG = 1,
#endif
#if AP_RANGEFINDER_MAXSONARI2CXL_ENABLED
MBI2C = 2,
#endif
#if AP_RANGEFINDER_PULSEDLIGHTLRF_ENABLED
PLI2C = 3,
#endif
// PX4 = 4, // no longer used, but may be in some user's parameters
#if AP_RANGEFINDER_PWM_ENABLED
PX4_PWM= 5,
#endif
#if AP_RANGEFINDER_BBB_PRU_ENABLED
BBB_PRU= 6,
#endif
#if AP_RANGEFINDER_LWI2C_ENABLED
LWI2C = 7,
#endif
#if AP_RANGEFINDER_LIGHTWARE_SERIAL_ENABLED
LWSER = 8,
#endif
#if AP_RANGEFINDER_BEBOP_ENABLED
BEBOP = 9,
#endif
#if AP_RANGEFINDER_MAVLINK_ENABLED
MAVLink = 10,
#endif
#if AP_RANGEFINDER_USD1_SERIAL_ENABLED
USD1_Serial = 11,
#endif
#if AP_RANGEFINDER_LEDDARONE_ENABLED
LEDDARONE = 12,
#endif
#if AP_RANGEFINDER_MAXBOTIX_SERIAL_ENABLED
MBSER = 13,
#endif
#if AP_RANGEFINDER_TRI2C_ENABLED
TRI2C = 14,
#endif
#if AP_RANGEFINDER_PULSEDLIGHTLRF_ENABLED
PLI2CV3= 15,
#endif
VL53L0X = 16,
#if AP_RANGEFINDER_NMEA_ENABLED
NMEA = 17,
#endif
#if AP_RANGEFINDER_WASP_ENABLED
WASP = 18,
#endif
#if AP_RANGEFINDER_BENEWAKE_TF02_ENABLED
BenewakeTF02 = 19,
#endif
#if AP_RANGEFINDER_BENEWAKE_TFMINI_ENABLED
BenewakeTFmini = 20,
#endif
#if AP_RANGEFINDER_PULSEDLIGHTLRF_ENABLED
PLI2CV3HP = 21,
#endif
#if AP_RANGEFINDER_PWM_ENABLED
PWM = 22,
#endif
#if AP_RANGEFINDER_BLPING_ENABLED
BLPing = 23,
#endif
#if AP_RANGEFINDER_DRONECAN_ENABLED
UAVCAN = 24,
#endif
#if AP_RANGEFINDER_BENEWAKE_TFMINIPLUS_ENABLED
BenewakeTFminiPlus = 25,
#endif
#if AP_RANGEFINDER_LANBAO_ENABLED
Lanbao = 26,
#endif
#if AP_RANGEFINDER_BENEWAKE_TF03_ENABLED
BenewakeTF03 = 27,
#endif
VL53L1X_Short = 28,
#if AP_RANGEFINDER_LEDDARVU8_ENABLED
LeddarVu8_Serial = 29,
#endif
#if AP_RANGEFINDER_HC_SR04_ENABLED
HC_SR04 = 30,
#endif
#if AP_RANGEFINDER_GYUS42V2_ENABLED
GYUS42v2 = 31,
#endif
#if HAL_MSP_RANGEFINDER_ENABLED
MSP = 32,
#endif
#if AP_RANGEFINDER_USD1_CAN_ENABLED
USD1_CAN = 33,
#endif
#if AP_RANGEFINDER_BENEWAKE_CAN_ENABLED
Benewake_CAN = 34,
#endif
#if AP_RANGEFINDER_TERARANGER_SERIAL_ENABLED
TeraRanger_Serial = 35,
#endif
#if AP_RANGEFINDER_LUA_ENABLED
Lua_Scripting = 36,
#endif
#if AP_RANGEFINDER_NOOPLOOP_ENABLED
NoopLoop_P = 37,
#endif
#if AP_RANGEFINDER_TOFSENSEP_CAN_ENABLED
TOFSenseP_CAN = 38,
#endif
#if AP_RANGEFINDER_NRA24_CAN_ENABLED
NRA24_CAN = 39,
#endif
#if AP_RANGEFINDER_TOFSENSEF_I2C_ENABLED
TOFSenseF_I2C = 40,
#endif
#if AP_RANGEFINDER_JRE_SERIAL_ENABLED
JRE_Serial = 41,
#endif
#if AP_RANGEFINDER_AINSTEIN_LR_D1_ENABLED
Ainstein_LR_D1 = 42,
#endif
#if AP_RANGEFINDER_SIM_ENABLED
SIM = 100,
#endif
};
enum class Function {
LINEAR = 0,
INVERTED = 1,
HYPERBOLA = 2
};
enum class Status {
NotConnected = 0,
NoData,
OutOfRangeLow,
OutOfRangeHigh,
Good
};
static constexpr int8_t SIGNAL_QUALITY_MIN = 0;
static constexpr int8_t SIGNAL_QUALITY_MAX = 100;
static constexpr int8_t SIGNAL_QUALITY_UNKNOWN = -1;
// The RangeFinder_State structure is filled in by the backend driver
struct RangeFinder_State {
float distance_m; // distance in meters
int8_t signal_quality_pct; // measurement quality in percent 0-100, -1 -> quality is unknown
uint16_t voltage_mv; // voltage in millivolts, if applicable, otherwise 0
enum RangeFinder::Status status; // sensor status
uint8_t range_valid_count; // number of consecutive valid readings (maxes out at 10)
uint32_t last_reading_ms; // system time of last successful update from sensor
const struct AP_Param::GroupInfo *var_info;
};
static const struct AP_Param::GroupInfo *backend_var_info[RANGEFINDER_MAX_INSTANCES];
// parameters for each instance
static const struct AP_Param::GroupInfo var_info[];
void set_log_rfnd_bit(uint32_t log_rfnd_bit) { _log_rfnd_bit = log_rfnd_bit; }
/*
Return the number of range finder instances. Note that if users
sets up rangefinders with a gap in the types then this is the
index of the maximum sensor ID plus one, so this gives the value
that should be used when iterating over all sensors
*/
uint8_t num_sensors(void) const {
return num_instances;
}
// prearm checks
bool prearm_healthy(char *failure_msg, const uint8_t failure_msg_len) const;
// detect and initialise any available rangefinders
void init(enum Rotation orientation_default);
// update state of all rangefinders. Should be called at around
// 10Hz from main loop
void update(void);
// Handle an incoming DISTANCE_SENSOR message (from a MAVLink enabled range finder)
void handle_msg(const mavlink_message_t &msg);
#if HAL_MSP_RANGEFINDER_ENABLED
// Handle an incoming DISTANCE_SENSOR message (from a MSP enabled range finder)
void handle_msp(const MSP::msp_rangefinder_data_message_t &pkt);
#endif
// return true if we have a range finder with the specified orientation
bool has_orientation(enum Rotation orientation) const;
// find first range finder instance with the specified orientation
AP_RangeFinder_Backend *find_instance(enum Rotation orientation) const;
AP_RangeFinder_Backend *get_backend(uint8_t id) const;
// get rangefinder type for an ID
Type get_type(uint8_t id) const {
return id >= RANGEFINDER_MAX_INSTANCES? Type::NONE : Type(params[id].type.get());
}
// get rangefinder address (for AP_Periph CAN)
uint8_t get_address(uint8_t id) const {
return id >= RANGEFINDER_MAX_INSTANCES? 0 : uint8_t(params[id].address.get());
}
// methods to return a distance on a particular orientation from
// any sensor which can current supply it
float distance_orient(enum Rotation orientation) const;
uint16_t distance_cm_orient(enum Rotation orientation) const;
int8_t signal_quality_pct_orient(enum Rotation orientation) const;
int16_t max_distance_cm_orient(enum Rotation orientation) const;
int16_t min_distance_cm_orient(enum Rotation orientation) const;
int16_t ground_clearance_cm_orient(enum Rotation orientation) const;
MAV_DISTANCE_SENSOR get_mav_distance_sensor_type_orient(enum Rotation orientation) const;
RangeFinder::Status status_orient(enum Rotation orientation) const;
bool has_data_orient(enum Rotation orientation) const;
uint8_t range_valid_count_orient(enum Rotation orientation) const;
const Vector3f &get_pos_offset_orient(enum Rotation orientation) const;
uint32_t last_reading_ms(enum Rotation orientation) const;
// get temperature reading in C. returns true on success and populates temp argument
bool get_temp(enum Rotation orientation, float &temp) const;
/*
set an externally estimated terrain height. Used to enable power
saving (where available) at high altitudes.
*/
void set_estimated_terrain_height(float height) {
estimated_terrain_height = height;
}
static RangeFinder *get_singleton(void) { return _singleton; }
protected:
AP_RangeFinder_Params params[RANGEFINDER_MAX_INSTANCES];
private:
static RangeFinder *_singleton;
RangeFinder_State state[RANGEFINDER_MAX_INSTANCES];
AP_RangeFinder_Backend *drivers[RANGEFINDER_MAX_INSTANCES];
uint8_t num_instances;
HAL_Semaphore detect_sem;
float estimated_terrain_height;
Vector3f pos_offset_zero; // allows returning position offsets of zero for invalid requests
void detect_instance(uint8_t instance, uint8_t& serial_instance);
bool _add_backend(AP_RangeFinder_Backend *driver, uint8_t instance, uint8_t serial_instance=0);
uint32_t _log_rfnd_bit = -1;
void Log_RFND() const;
};
namespace AP {
RangeFinder *rangefinder();
};
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