CayenneLPP.h

// Adapted from https://developer.mbed.org/teams/myDevicesIoT/code/Cayenne-LPP/

// Copyright © 2017 The Things Network
// Use of this source code is governed by the MIT license that can be found in the LICENSE file.

#ifndef _CAYENNE_LPP_H_
#define _CAYENNE_LPP_H_

#include <Arduino.h>

//LPP_BATTERY = // TODO Unsupported in IPSO Smart Object
//LPP_PROXIMITY = // TODO Unsupported in IPSO Smart Object

#define LPP_DIGITAL_INPUT 0         // 1 byte
#define LPP_DIGITAL_OUTPUT 1        // 1 byte
#define LPP_ANALOG_INPUT 2          // 2 bytes, 0.01 signed
#define LPP_ANALOG_OUTPUT 3         // 2 bytes, 0.01 signed
#define LPP_LUMINOSITY 101          // 2 bytes, 1 lux unsigned
#define LPP_PRESENCE 102            // 1 byte, 1
#define LPP_TEMPERATURE 103         // 2 bytes, 0.1°C signed
#define LPP_RELATIVE_HUMIDITY 104   // 1 byte, 0.5% unsigned
#define LPP_ACCELEROMETER 113       // 2 bytes per axis, 0.001G
#define LPP_BAROMETRIC_PRESSURE 115 // 2 bytes 0.1 hPa Unsigned
#define LPP_VOLTAGE             116 // 2 byte unsigned
#define LPP_UNIXTIME 133            // 4 bytes, unsigned uint_32_t
#define LPP_GYROMETER 134           // 2 bytes per axis, 0.01 °/s
#define LPP_GPS 136                 // 3 byte lon/lat 0.0001 °, 3 bytes alt 0.01 meter

// Data ID + Data Type + Data Size
#define LPP_DIGITAL_INPUT_SIZE 3       // 1 byte
#define LPP_DIGITAL_OUTPUT_SIZE 3      // 1 byte
#define LPP_ANALOG_INPUT_SIZE 4        // 2 bytes, 0.01 signed
#define LPP_ANALOG_OUTPUT_SIZE 4       // 2 bytes, 0.01 signed
#define LPP_LUMINOSITY_SIZE 4          // 2 bytes, 1 lux unsigned
#define LPP_PRESENCE_SIZE 3            // 1 byte, 1
#define LPP_TEMPERATURE_SIZE 4         // 2 bytes, 0.1°C signed
#define LPP_RELATIVE_HUMIDITY_SIZE 3   // 1 byte, 0.5% unsigned
#define LPP_ACCELEROMETER_SIZE 8       // 2 bytes per axis, 0.001G
#define LPP_BAROMETRIC_PRESSURE_SIZE 4 // 2 bytes 0.1 hPa Unsigned
#define LPP_VOLTAGE_SIZE 4             // 2 byte 0.01 unsigned
#define LPP_UNIXTIME_SIZE 6 		   // 4 bytes, unsigned uint_32_t
#define LPP_GYROMETER_SIZE 8           // 2 bytes per axis, 0.01 °/s
#define LPP_GPS_SIZE 11                // 3 byte lon/lat 0.0001 °, 3 bytes alt 0.01 meter

class CayenneLPP
{
public:
  CayenneLPP(uint8_t channel);
  ~CayenneLPP();

  void reset(void);
  uint8_t getSize(void);
  uint8_t setSize(uint8_t value);
  uint8_t *getBuffer(void);
  uint8_t copy(uint8_t *buffer);

  uint8_t addDigitalInput(uint8_t value, uint8_t channel = 0);
  uint8_t addDigitalOutput(uint8_t value, uint8_t channel = 0);
  uint8_t addAnalogInput(float value, uint8_t channel = 0);
  uint8_t addAnalogOutput(float value, uint8_t channel = 0);
  uint8_t addLuminosity(uint16_t lux, uint8_t channel = 0);
  uint8_t addPresence(uint8_t value, uint8_t channel = 0);
  uint8_t addTemperature(float celsius, uint8_t channel = 0);
  uint8_t addRelativeHumidity(float rh, uint8_t channel = 0);
  uint8_t addAccelerometer(float x, float y, float z, uint8_t channel = 0);
  uint8_t addBarometricPressure(float hpa, uint8_t channel = 0);
  uint8_t addVoltage(float voltage, uint8_t channel = 0);
  uint8_t addUnixTime(uint32_t unixtime, uint8_t channel = 0);
  uint8_t addGyrometer(float x, float y, float z, uint8_t channel = 0);
  uint8_t addGPS(float latitude, float longitude, float meters, uint8_t channel = 0);

private:
  uint8_t *buffer;
  uint8_t maxsize = 51;
  uint8_t cursor;
};

#endif