/*
 * Authors (alphabetical order)
 * - Bertrand Songis <bsongis@gmail.com>
 * - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
 * - Cameron Weeks <th9xer@gmail.com>
 * - Erez Raviv
 * - Jean-Pierre Parisy
 * - Karl Szmutny <shadow@privy.de>
 * - Michael Blandford
 * - Michal Hlavinka
 * - Philip Moss
 * - Rob Thomson
 * - Romolo Manfredini <romolo.manfredini@gmail.com>
 * - Thomas Husterer
 *
 * open9x is based on code named
 * gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
 * er9x by Erez Raviv: http://code.google.com/p/er9x/,
 * and the original (and ongoing) project by
 * Thomas Husterer, th9x: http://code.google.com/p/th9x/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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.
 *
 */

#ifndef FRSKY_H
#define FRSKY_H

#define FRSKY_RX_PACKET_SIZE 19
#define FRSKY_TX_PACKET_SIZE 12

#include <inttypes.h>

// .20 seconds
#define FRSKY_TIMEOUT10ms 20

enum AlarmLevel {
  alarm_off = 0,
  alarm_yellow = 1,
  alarm_orange = 2,
  alarm_red = 3
};

#define ALARM_GREATER(channel, alarm) ((g_model.frsky.channels[channel].alarms_greater >> alarm) & 1)
#define ALARM_LEVEL(channel, alarm) ((g_model.frsky.channels[channel].alarms_level >> (2*alarm)) & 3)

// TODO change names
class FrskyRSSI {
 public:
  uint8_t value;
  uint8_t min;
  void set(uint8_t value);
};

class FrskyData: public FrskyRSSI {
 public:
  uint8_t max;
  void set(uint8_t value);
};

#define EARTH_RADIUSKM ((uint32_t)6371)
#define EARTH_RADIUS ((uint32_t)111194)

#if defined(FRSKY_HUB)
struct FrskyHubData {
  int16_t  baroAltitudeOffset;  // spare reused
  int16_t  gpsAltitude_bp;   // before punct
  int16_t  temperature1;     // -20 .. 250 deg. celcius
  uint16_t rpm;              // 0..60,000 revs. per minute
  uint16_t fuelLevel;        // 0, 25, 50, 75, 100 percent
  int16_t  temperature2;     // -20 .. 250 deg. celcius
  uint16_t volts;            // 1/500V increments (0..4.2V)
  uint32_t distFromEarthAxis;   // 2 spares reused
  int16_t  gpsAltitude_ap;   // after punct
  uint8_t  cellVolts[12];       // 6 spares reused
  uint16_t baroAltitude;     // 0..9,999 meters
  uint16_t gpsSpeed_bp;      // before punct
  uint16_t gpsLongitude_bp;  // before punct
  uint16_t gpsLatitude_bp;   // before punct
  uint16_t gpsCourse_bp;     // before punct (0..359.99 deg. -- seemingly 2-decimal precision)
  uint8_t  day;
  uint8_t  month;
  uint16_t year;
  uint8_t  hour;
  uint8_t  min;
  uint16_t sec;
  uint16_t gpsSpeed_ap;
  uint16_t gpsLongitude_ap;
  uint16_t gpsLatitude_ap;
  uint16_t gpsCourse_ap;
  uint32_t pilotLatitude;       // 2 spares reused
  uint32_t pilotLongitude;      // 2 spares reused
  uint16_t baroAltitude_bp;     // spare reused
  uint16_t gpsLongitudeEW;   // East/West
  uint16_t gpsLatitudeNS;    // North/South
  int16_t  accelX;           // 1/256th gram (-8g ~ +8g)
  int16_t  accelY;           // 1/256th gram (-8g ~ +8g)
  int16_t  accelZ;           // 1/256th gram (-8g ~ +8g)
  uint8_t  cellsCount;          // 1/2 spare reused
  uint8_t  minCellVolts;        // 1/2 spare reused
  uint16_t current;
  // 17 spares
  uint16_t volts_bp;
  uint16_t volts_ap;
  // end of FrSky Hub data
  uint16_t maxGpsSpeed;
};

#elif defined(WS_HOW_HIGH)

struct FrskyHubData {
  uint16_t baroAltitude;     // 0..9,999 meters
  int16_t  baroAltitudeOffset;
};

#endif

#if defined(FRSKY_HUB) || defined(WS_HOW_HIGH)
extern FrskyHubData frskyHubData;
extern uint8_t barsThresholds[BAR_MAX-3];
#endif

// Global Fr-Sky telemetry data variables
extern uint8_t frskyStreaming; // >0 (true) == data is streaming in. 0 = nodata detected for some time
extern uint8_t frskyUsrStreaming;

#define SEND_MODEL_ALARMS 6
extern uint8_t FrskyAlarmSendState;

extern FrskyData frskyTelemetry[2];
extern FrskyRSSI frskyRSSI[2];
extern uint8_t frskyTxBuffer[FRSKY_TX_PACKET_SIZE];
extern uint8_t frskyTxBufferCount;

void FRSKY_Init(void);
void FRSKY10mspoll(void);

inline void FRSKY_setModelAlarms(void)
{
  FrskyAlarmSendState = SEND_MODEL_ALARMS;
}

bool FRSKY_alarmRaised(uint8_t idx);

void resetTelemetry();

#ifdef FRSKY_HUB
void getGpsPilotPosition();
uint32_t getGpsDistanceX2();
uint16_t getGpsDistance();
#endif

#endif