ardupilot/libraries/AP_Frsky_Telem/AP_Frsky_Telem.h

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// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
/*
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/>.
*/
#ifndef __AP_FRSKY_TELEM_H__
#define __AP_FRSKY_TELEM_H__
#include <AP_HAL.h>
#include <AP_Param.h>
#include <AP_Math.h>
#include <AP_GPS.h>
#include <AP_AHRS.h>
#include <AP_Baro.h>
#include <AP_BattMonitor.h>
#include <AP_SerialManager.h>
/* FrSky sensor hub data IDs */
#define FRSKY_ID_GPS_ALT_BP 0x01
#define FRSKY_ID_TEMP1 0x02
#define FRSKY_ID_RPM 0x03
#define FRSKY_ID_FUEL 0x04
#define FRSKY_ID_TEMP2 0x05
#define FRSKY_ID_VOLTS 0x06
#define FRSKY_ID_GPS_ALT_AP 0x09
#define FRSKY_ID_BARO_ALT_BP 0x10
#define FRSKY_ID_GPS_SPEED_BP 0x11
#define FRSKY_ID_GPS_LONG_BP 0x12
#define FRSKY_ID_GPS_LAT_BP 0x13
#define FRSKY_ID_GPS_COURS_BP 0x14
#define FRSKY_ID_GPS_DAY_MONTH 0x15
#define FRSKY_ID_GPS_YEAR 0x16
#define FRSKY_ID_GPS_HOUR_MIN 0x17
#define FRSKY_ID_GPS_SEC 0x18
#define FRSKY_ID_GPS_SPEED_AP 0x19
#define FRSKY_ID_GPS_LONG_AP 0x1A
#define FRSKY_ID_GPS_LAT_AP 0x1B
#define FRSKY_ID_GPS_COURS_AP 0x1C
#define FRSKY_ID_BARO_ALT_AP 0x21
#define FRSKY_ID_GPS_LONG_EW 0x22
#define FRSKY_ID_GPS_LAT_NS 0x23
#define FRSKY_ID_ACCEL_X 0x24
#define FRSKY_ID_ACCEL_Y 0x25
#define FRSKY_ID_ACCEL_Z 0x26
#define FRSKY_ID_CURRENT 0x28
#define FRSKY_ID_VARIO 0x30
#define FRSKY_ID_VFAS 0x39
#define FRSKY_ID_VOLTS_BP 0x3A
#define FRSKY_ID_VOLTS_AP 0x3B
// Default sensor data IDs (Physical IDs + CRC)
#define DATA_ID_VARIO 0x00 // 0
#define DATA_ID_FLVSS 0xA1 // 1
#define DATA_ID_FAS 0x22 // 2
#define DATA_ID_GPS 0x83 // 3
#define DATA_ID_RPM 0xE4 // 4
#define DATA_ID_SP2UH 0x45 // 5
#define DATA_ID_SP2UR 0xC6 // 6
#define SPORT_START_FRAME 0x7E
class AP_Frsky_Telem
{
public:
//constructor
AP_Frsky_Telem(AP_AHRS &ahrs, AP_BattMonitor &battery);
// supported protocols
enum FrSkyProtocol {
FrSkyUnknown = 0,
FrSkyDPORT = 2,
FrSkySPORT = 3
};
// init - perform require initialisation including detecting which protocol to use
void init(const AP_SerialManager& serial_manager);
// send_frames - sends updates down telemetry link for both DPORT and SPORT protocols
// should be called by main program at 50hz to allow poll for serial bytes
// coming from the receiver for the SPort protocol
void send_frames(uint8_t control_mode);
private:
// init_uart_for_sport - initialise uart for use by sport
void init_uart_for_sport();
// send_hub_frame - main transmission function when protocol is FrSkyDPORT
void send_hub_frame();
// sport_tick - main call to send updates to transmitter when protocol is FrSkySPORT
// called by scheduler at a high rate
void sport_tick();
// methods related to the nuts-and-bolts of sending data
void calc_crc(uint8_t byte);
void send_crc();
void frsky_send_byte(uint8_t value);
void frsky_send_hub_startstop();
void frsky_send_sport_prim();
void frsky_send_data(uint8_t id, int16_t data);
// methods to convert flight controller data to frsky telemetry format
void calc_baro_alt();
float frsky_format_gps(float dec);
void calc_gps_position();
void calc_battery();
void calc_gps_sats();
// methods to send individual pieces of data down telemetry link
void send_gps_sats(void);
void send_mode(void);
void send_baro_alt_m(void);
void send_baro_alt_cm(void);
void send_batt_remain(void);
void send_batt_volts(void);
void send_current(void);
void send_prearm_error(void);
void send_heading(void);
void send_gps_lat_dd(void);
void send_gps_lat_mm(void);
void send_gps_lat_ns(void);
void send_gps_lon_dd(void);
void send_gps_lon_mm(void);
void send_gps_lon_ew(void);
void send_gps_speed_meter(void);
void send_gps_speed_cm(void);
void send_gps_alt_meter(void);
void send_gps_alt_cm(void);
AP_AHRS &_ahrs; // reference to attitude estimate
AP_BattMonitor &_battery; // reference to battery monitor object
AP_HAL::UARTDriver *_port; // UART used to send data to receiver
bool _initialised_uart; // true when we have detected the protocol and UART has been initialised
enum FrSkyProtocol _protocol; // protocol used - detected using SerialManager's SERIALX_PROTOCOL parameter
uint16_t _crc;
uint32_t _last_frame1_ms;
uint32_t _last_frame2_ms;
bool _battery_data_ready;
uint16_t _batt_remaining;
uint16_t _batt_volts;
uint16_t _batt_amps;
bool _sats_data_ready;
uint16_t gps_sats;
bool _gps_data_ready;
bool _pos_gps_ok;
uint16_t _course_in_degrees;
char _lat_ns, _lon_ew;
uint16_t _latdddmm;
uint16_t _latmmmm;
uint16_t _londddmm;
uint16_t _lonmmmm;
uint16_t _alt_gps_meters;
uint16_t _alt_gps_cm;
int16_t _speed_in_meter;
uint16_t _speed_in_centimeter;
bool _baro_data_ready;
int16_t _baro_alt_meters;
uint16_t _baro_alt_cm;
bool _mode_data_ready;
uint8_t _mode;
uint8_t _fas_call;
uint8_t _gps_call;
uint8_t _vario_call;
uint8_t _various_call;
uint8_t _sport_status;
};
#endif