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/*
* The MySensors Arduino library handles the wireless radio link and protocol
* between your home built sensors/actuators and HA controller of choice.
* The sensors forms a self healing radio network with optional repeaters. Each
* repeater and gateway builds a routing tables in EEPROM which keeps track of the
* network topology allowing messages to be routed to nodes.
*
* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
* Copyright (C) 2013-2018 Sensnology AB
* Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
*
* Documentation: http://www.mysensors.org
* Support Forum: http://forum.mysensors.org
*
* 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.
*/
/**
* @file MyMessage.h
*
* @brief API and type declarations for MySensors messages
* @defgroup MyMessagegrp MyMessage
* @ingroup publics
* @{
*
* @brief Here you can find all message types used by the MySensors protocol as well as macros for
* parsing and manipulating messages.
*/
#ifndef MyMessage_h
#define MyMessage_h
#ifdef __cplusplus
#include <Arduino.h>
#include <stdint.h>
#endif
#define PROTOCOL_VERSION (2u) //!< The version of the protocol
#define MAX_MESSAGE_LENGTH (32u) //!< The maximum size of a message (including header)
#define HEADER_SIZE (7u) //!< The size of the header
#define MAX_PAYLOAD (MAX_MESSAGE_LENGTH - HEADER_SIZE) //!< The maximum size of a payload depends on #MAX_MESSAGE_LENGTH and #HEADER_SIZE
/// @brief The command field (message-type) defines the overall properties of a message
typedef enum {
C_PRESENTATION = 0, //!< Sent by a node when they present attached sensors. This is usually done in presentation() at startup.
C_SET = 1, //!< This message is sent from or to a sensor when a sensor value should be updated.
C_REQ = 2, //!< Requests a variable value (usually from an actuator destined for controller).
C_INTERNAL = 3, //!< Internal MySensors messages (also include common messages provided/generated by the library).
C_STREAM = 4 //!< For firmware and other larger chunks of data that need to be divided into pieces.
} mysensors_command_t;
#if !DOXYGEN // Hide until we migrate
/// @brief Type of sensor (used when presenting sensors)
typedef enum {
S_DOOR = 0, //!< Door sensor, V_TRIPPED, V_ARMED
S_MOTION = 1, //!< Motion sensor, V_TRIPPED, V_ARMED
S_SMOKE = 2, //!< Smoke sensor, V_TRIPPED, V_ARMED
S_BINARY = 3, //!< Binary light or relay, V_STATUS, V_WATT
S_LIGHT = 3, //!< \deprecated Same as S_BINARY
S_DIMMER = 4, //!< Dimmable light or fan device, V_STATUS (on/off), V_PERCENTAGE (dimmer level 0-100), V_WATT
S_COVER = 5, //!< Blinds or window cover, V_UP, V_DOWN, V_STOP, V_PERCENTAGE (open/close to a percentage)
S_TEMP = 6, //!< Temperature sensor, V_TEMP
S_HUM = 7, //!< Humidity sensor, V_HUM
S_BARO = 8, //!< Barometer sensor, V_PRESSURE, V_FORECAST
S_WIND = 9, //!< Wind sensor, V_WIND, V_GUST
S_RAIN = 10, //!< Rain sensor, V_RAIN, V_RAINRATE
S_UV = 11, //!< Uv sensor, V_UV
S_WEIGHT = 12, //!< Personal scale sensor, V_WEIGHT, V_IMPEDANCE
S_POWER = 13, //!< Power meter, V_WATT, V_KWH, V_VAR, V_VA, V_POWER_FACTOR
S_HEATER = 14, //!< Header device, V_HVAC_SETPOINT_HEAT, V_HVAC_FLOW_STATE, V_TEMP
S_DISTANCE = 15, //!< Distance sensor, V_DISTANCE
S_LIGHT_LEVEL = 16, //!< Light level sensor, V_LIGHT_LEVEL (uncalibrated in percentage), V_LEVEL (light level in lux)
S_ARDUINO_NODE = 17, //!< Used (internally) for presenting a non-repeating Arduino node
S_ARDUINO_REPEATER_NODE = 18, //!< Used (internally) for presenting a repeating Arduino node
S_LOCK = 19, //!< Lock device, V_LOCK_STATUS
S_IR = 20, //!< IR device, V_IR_SEND, V_IR_RECEIVE
S_WATER = 21, //!< Water meter, V_FLOW, V_VOLUME
S_AIR_QUALITY = 22, //!< Air quality sensor, V_LEVEL
S_CUSTOM = 23, //!< Custom sensor
S_DUST = 24, //!< Dust sensor, V_LEVEL
S_SCENE_CONTROLLER = 25, //!< Scene controller device, V_SCENE_ON, V_SCENE_OFF.
S_RGB_LIGHT = 26, //!< RGB light. Send color component data using V_RGB. Also supports V_WATT
S_RGBW_LIGHT = 27, //!< RGB light with an additional White component. Send data using V_RGBW. Also supports V_WATT
S_COLOR_SENSOR = 28, //!< Color sensor, send color information using V_RGB
S_HVAC = 29, //!< Thermostat/HVAC device. V_HVAC_SETPOINT_HEAT, V_HVAC_SETPOINT_COLD, V_HVAC_FLOW_STATE, V_HVAC_FLOW_MODE, V_TEMP
S_MULTIMETER = 30, //!< Multimeter device, V_VOLTAGE, V_CURRENT, V_IMPEDANCE
S_SPRINKLER = 31, //!< Sprinkler, V_STATUS (turn on/off), V_TRIPPED (if fire detecting device)
S_WATER_LEAK = 32, //!< Water leak sensor, V_TRIPPED, V_ARMED
S_SOUND = 33, //!< Sound sensor, V_TRIPPED, V_ARMED, V_LEVEL (sound level in dB)
S_VIBRATION = 34, //!< Vibration sensor, V_TRIPPED, V_ARMED, V_LEVEL (vibration in Hz)
S_MOISTURE = 35, //!< Moisture sensor, V_TRIPPED, V_ARMED, V_LEVEL (water content or moisture in percentage?)
S_INFO = 36, //!< LCD text device / Simple information device on controller, V_TEXT
S_GAS = 37, //!< Gas meter, V_FLOW, V_VOLUME
S_GPS = 38, //!< GPS Sensor, V_POSITION
S_WATER_QUALITY = 39 //!< V_TEMP, V_PH, V_ORP, V_EC, V_STATUS
} mysensors_sensor_t;
/// @brief Type of sensor data (for set/req/ack messages)
typedef enum {
V_TEMP = 0, //!< S_TEMP. Temperature S_TEMP, S_HEATER, S_HVAC
V_HUM = 1, //!< S_HUM. Humidity
V_STATUS = 2, //!< S_BINARY, S_DIMMER, S_SPRINKLER, S_HVAC, S_HEATER. Used for setting/reporting binary (on/off) status. 1=on, 0=off
V_LIGHT = 2, //!< \deprecated Same as V_STATUS
V_PERCENTAGE = 3, //!< S_DIMMER. Used for sending a percentage value 0-100 (%).
V_DIMMER = 3, //!< \deprecated Same as V_PERCENTAGE
V_PRESSURE = 4, //!< S_BARO. Atmospheric Pressure
V_FORECAST = 5, //!< S_BARO. Whether forecast. string of "stable", "sunny", "cloudy", "unstable", "thunderstorm" or "unknown"
V_RAIN = 6, //!< S_RAIN. Amount of rain
V_RAINRATE = 7, //!< S_RAIN. Rate of rain
V_WIND = 8, //!< S_WIND. Wind speed
V_GUST = 9, //!< S_WIND. Gust
V_DIRECTION = 10, //!< S_WIND. Wind direction 0-360 (degrees)
V_UV = 11, //!< S_UV. UV light level
V_WEIGHT = 12, //!< S_WEIGHT. Weight(for scales etc)
V_DISTANCE = 13, //!< S_DISTANCE. Distance
V_IMPEDANCE = 14, //!< S_MULTIMETER, S_WEIGHT. Impedance value
V_ARMED = 15, //!< S_DOOR, S_MOTION, S_SMOKE, S_SPRINKLER. Armed status of a security sensor. 1 = Armed, 0 = Bypassed
V_TRIPPED = 16, //!< S_DOOR, S_MOTION, S_SMOKE, S_SPRINKLER, S_WATER_LEAK, S_SOUND, S_VIBRATION, S_MOISTURE. Tripped status of a security sensor. 1 = Tripped, 0
V_WATT = 17, //!< S_POWER, S_BINARY, S_DIMMER, S_RGB_LIGHT, S_RGBW_LIGHT. Watt value for power meters
V_KWH = 18, //!< S_POWER. Accumulated number of KWH for a power meter
V_SCENE_ON = 19, //!< S_SCENE_CONTROLLER. Turn on a scene
V_SCENE_OFF = 20, //!< S_SCENE_CONTROLLER. Turn of a scene
V_HVAC_FLOW_STATE = 21, //!< S_HEATER, S_HVAC. HVAC flow state ("Off", "HeatOn", "CoolOn", or "AutoChangeOver")
V_HEATER = 21, //!< \deprecated Same as V_HVAC_FLOW_STATE
V_HVAC_SPEED = 22, //!< S_HVAC, S_HEATER. HVAC/Heater fan speed ("Min", "Normal", "Max", "Auto")
V_LIGHT_LEVEL = 23, //!< S_LIGHT_LEVEL. Uncalibrated light level. 0-100%. Use V_LEVEL for light level in lux
V_VAR1 = 24, //!< VAR1
V_VAR2 = 25, //!< VAR2
V_VAR3 = 26, //!< VAR3
V_VAR4 = 27, //!< VAR4
V_VAR5 = 28, //!< VAR5
V_UP = 29, //!< S_COVER. Window covering. Up
V_DOWN = 30, //!< S_COVER. Window covering. Down
V_STOP = 31, //!< S_COVER. Window covering. Stop
V_IR_SEND = 32, //!< S_IR. Send out an IR-command
V_IR_RECEIVE = 33, //!< S_IR. This message contains a received IR-command
V_FLOW = 34, //!< S_WATER. Flow of water (in meter)
V_VOLUME = 35, //!< S_WATER. Water volume
V_LOCK_STATUS = 36, //!< S_LOCK. Set or get lock status. 1=Locked, 0=Unlocked
V_LEVEL = 37, //!< S_DUST, S_AIR_QUALITY, S_SOUND (dB), S_VIBRATION (hz), S_LIGHT_LEVEL (lux)
V_VOLTAGE = 38, //!< S_MULTIMETER
V_CURRENT = 39, //!< S_MULTIMETER
V_RGB = 40, //!< S_RGB_LIGHT, S_COLOR_SENSOR. Sent as ASCII hex: RRGGBB (RR=red, GG=green, BB=blue component)
V_RGBW = 41, //!< S_RGBW_LIGHT. Sent as ASCII hex: RRGGBBWW (WW=white component)
V_ID = 42, //!< Used for sending in sensors hardware ids (i.e. OneWire DS1820b).
V_UNIT_PREFIX = 43, //!< Allows sensors to send in a string representing the unit prefix to be displayed in GUI, not parsed by controller! E.g. cm, m, km, inch.
V_HVAC_SETPOINT_COOL = 44, //!< S_HVAC. HVAC cool setpoint (Integer between 0-100)
V_HVAC_SETPOINT_HEAT = 45, //!< S_HEATER, S_HVAC. HVAC/Heater setpoint (Integer between 0-100)
V_HVAC_FLOW_MODE = 46, //!< S_HVAC. Flow mode for HVAC ("Auto", "ContinuousOn", "PeriodicOn")
V_TEXT = 47, //!< S_INFO. Text message to display on LCD or controller device
V_CUSTOM = 48, //!< Custom messages used for controller/inter node specific commands, preferably using S_CUSTOM device type.
V_POSITION = 49, //!< GPS position and altitude. Payload: latitude;longitude;altitude(m). E.g. "55.722526;13.017972;18"
V_IR_RECORD = 50, //!< Record IR codes S_IR for playback
V_PH = 51, //!< S_WATER_QUALITY, water PH
V_ORP = 52, //!< S_WATER_QUALITY, water ORP : redox potential in mV
V_EC = 53, //!< S_WATER_QUALITY, water electric conductivity μS/cm (microSiemens/cm)
V_VAR = 54, //!< S_POWER, Reactive power: volt-ampere reactive (var)
V_VA = 55, //!< S_POWER, Apparent power: volt-ampere (VA)
V_POWER_FACTOR = 56, //!< S_POWER, Ratio of real power to apparent power: floating point value in the range [-1,..,1]
} mysensors_data_t;
#endif
/// @brief Type of internal messages (for internal messages)
typedef enum {
I_BATTERY_LEVEL = 0, //!< Battery level
I_TIME = 1, //!< Time (request/response)
I_VERSION = 2, //!< Version
I_ID_REQUEST = 3, //!< ID request
I_ID_RESPONSE = 4, //!< ID response
I_INCLUSION_MODE = 5, //!< Inclusion mode
I_CONFIG = 6, //!< Config (request/response)
I_FIND_PARENT_REQUEST = 7, //!< Find parent
I_FIND_PARENT_RESPONSE = 8, //!< Find parent response
I_LOG_MESSAGE = 9, //!< Log message
I_CHILDREN = 10, //!< Children
I_SKETCH_NAME = 11, //!< Sketch name
I_SKETCH_VERSION = 12, //!< Sketch version
I_REBOOT = 13, //!< Reboot request
I_GATEWAY_READY = 14, //!< Gateway ready
I_SIGNING_PRESENTATION = 15, //!< Provides signing related preferences (first byte is preference version)
I_NONCE_REQUEST = 16, //!< Request for a nonce
I_NONCE_RESPONSE = 17, //!< Payload is nonce data
I_HEARTBEAT_REQUEST = 18, //!< Heartbeat request
I_PRESENTATION = 19, //!< Presentation message
I_DISCOVER_REQUEST = 20, //!< Discover request
I_DISCOVER_RESPONSE = 21, //!< Discover response
I_HEARTBEAT_RESPONSE = 22, //!< Heartbeat response
I_LOCKED = 23, //!< Node is locked (reason in string-payload)
I_PING = 24, //!< Ping sent to node, payload incremental hop counter
I_PONG = 25, //!< In return to ping, sent back to sender, payload incremental hop counter
I_REGISTRATION_REQUEST = 26, //!< Register request to GW
I_REGISTRATION_RESPONSE = 27, //!< Register response from GW
I_DEBUG = 28, //!< Debug message
I_SIGNAL_REPORT_REQUEST = 29, //!< Device signal strength request
I_SIGNAL_REPORT_REVERSE = 30, //!< Internal
I_SIGNAL_REPORT_RESPONSE = 31, //!< Device signal strength response (RSSI)
I_PRE_SLEEP_NOTIFICATION = 32, //!< Message sent before node is going to sleep
I_POST_SLEEP_NOTIFICATION = 33 //!< Message sent after node woke up (if enabled)
} mysensors_internal_t;
/// @brief Type of data stream (for streamed message)
typedef enum {
ST_FIRMWARE_CONFIG_REQUEST = 0, //!< Request new FW, payload contains current FW details
ST_FIRMWARE_CONFIG_RESPONSE = 1, //!< New FW details to initiate OTA FW update
ST_FIRMWARE_REQUEST = 2, //!< Request FW block
ST_FIRMWARE_RESPONSE = 3, //!< Response FW block
ST_SOUND = 4, //!< Sound
ST_IMAGE = 5, //!< Image
ST_FIRMWARE_CONFIRM = 6, //!< Mark running firmware as valid (MyOTAFirmwareUpdateNVM + mcuboot)
ST_FIRMWARE_RESPONSE_RLE = 7, //!< Response FW block with run length encoded data
} mysensors_stream_t;
/// @brief Type of payload
typedef enum {
P_STRING = 0, //!< Payload type is string
P_BYTE = 1, //!< Payload type is byte
P_INT16 = 2, //!< Payload type is INT16
P_UINT16 = 3, //!< Payload type is UINT16
P_LONG32 = 4, //!< Payload type is INT32
P_ULONG32 = 5, //!< Payload type is UINT32
P_CUSTOM = 6, //!< Payload type is binary
P_FLOAT32 = 7 //!< Payload type is float32
} mysensors_payload_t;
#ifndef BIT
#define BIT(n) ( 1<<(n) ) //!< Bit indexing macro
#endif
#define BIT_MASK(len) ( BIT(len)-1 ) //!< Create a bitmask of length 'len'
#define BF_MASK(start, len) ( BIT_MASK(len)<<(start) ) //!< Create a bitfield mask of length starting at bit 'start'
#define BF_PREP(x, start, len) ( ((x)&BIT_MASK(len)) << (start) ) //!< Prepare a bitmask for insertion or combining
#define BF_GET(y, start, len) ( ((y)>>(start)) & BIT_MASK(len) ) //!< Extract a bitfield of length 'len' starting at bit 'start' from 'y'
#define BF_SET(y, x, start, len) ( y= ((y) &~ BF_MASK(start, len)) | BF_PREP(x, start, len) ) //!< Insert a new bitfield value 'x' into 'y'
// Getters/setters for special bit fields in header
#define mSetVersion(_message,_version) BF_SET(_message.version_length, _version, 0, 2) //!< Set version field
#define mGetVersion(_message) ((uint8_t)BF_GET(_message.version_length, 0, 2)) //!< Get version field
#define mSetSigned(_message,_signed) BF_SET(_message.version_length, _signed, 2, 1) //!< Set signed field
#define mGetSigned(_message) ((bool)BF_GET(_message.version_length, 2, 1)) //!< Get signed field
#define mSetLength(_message,_length) BF_SET(_message.version_length, _length, 3, 5) //!< Set length field
#define mGetLength(_message) ((uint8_t)BF_GET(_message.version_length, 3, 5)) //!< Get length field
#define mSetCommand(_message,_command) BF_SET(_message.command_ack_payload, _command, 0, 3) //!< Set command field
#define mGetCommand(_message) ((uint8_t)BF_GET(_message.command_ack_payload, 0, 3)) //!< Get command field
#define mSetRequestAck(_message,_rack) BF_SET(_message.command_ack_payload, _rack, 3, 1) //!< Set ack-request field
#define mGetRequestAck(_message) ((bool)BF_GET(_message.command_ack_payload, 3, 1)) //!< Get ack-request field
#define mSetAck(_message,_ackMsg) BF_SET(_message.command_ack_payload, _ackMsg, 4, 1) //!< Set ack field
#define mGetAck(_message) ((bool)BF_GET(_message.command_ack_payload, 4, 1)) //!< Get ack field
#define mSetPayloadType(_message, _pt) BF_SET(_message.command_ack_payload, _pt, 5, 3) //!< Set payload type field
#define mGetPayloadType(_message) ((uint8_t)BF_GET(_message.command_ack_payload, 5, 3)) //!< Get payload type field
// internal access for special fields
#define miGetCommand() ((uint8_t)BF_GET(command_ack_payload, 0, 3)) //!< Internal getter for command field
#define miSetLength(_length) BF_SET(version_length, _length, 3, 5) //!< Internal setter for length field
#define miGetLength() ((uint8_t)BF_GET(version_length, 3, 5)) //!< Internal getter for length field
#define miSetVersion(_version) BF_SET(version_length, _version, 0, 2) //!< Internal setter for version field
#define miGetVersion() ((uint8_t)BF_GET(version_length, 0, 2)) //!< Internal getter for version field
#define miSetRequestAck(_rack) BF_SET(command_ack_payload, _rack, 3, 1) //!< Internal setter for ack-request field
#define miGetRequestAck() ((bool)BF_GET(command_ack_payload, 3, 1)) //!< Internal getter for ack-request field
#define miSetAck(_ack) BF_SET(command_ack_payload, _ack, 4, 1) //!< Internal setter for ack field
#define miGetAck() ((bool)BF_GET(command_ack_payload, 4, 1)) //!< Internal getter for ack field
#define miSetPayloadType(_pt) BF_SET(command_ack_payload, _pt, 5, 3) //!< Internal setter for payload type field
#define miGetPayloadType() (uint8_t)BF_GET(command_ack_payload, 5, 3) //!< Internal getter for payload type field
#if defined(__cplusplus) || defined(DOXYGEN)
/**
* @brief MyMessage is used to create, manipulate, send and read MySensors messages
*/
class MyMessage
{
private:
char* getCustomString(char *buffer) const;
public:
/**
* Default constructor
*/
MyMessage(void);
/**
* Constructor
* @param sensor id of the child sensor for this message
* @param type see http://korturl.nu/stupidurl
*/
MyMessage(const uint8_t sensor, const uint8_t type);
/**
* Single character hex (0 - 15) conversion
* @param i byte (only lower 4 bits will be considered)
* @return single char with the hex representation (0 to F) of the parameter
*/
char i2h(const uint8_t i) const;
/**
* @brief Clear message contents.
*/
void clear(void);
/**
* If payload is something else than P_STRING you can have the payload value converted
* into string representation by supplying a buffer with the minimum size of
* 2*MAX_PAYLOAD+1. This is to be able to fit hex-conversion of a full binary payload.
* @param buffer pointer to a buffer that's at least 2*MAX_PAYLOAD+1 bytes large
*/
char* getStream(char *buffer) const;
/**
* @brief Copy the payload into the supplied buffer
*/
char* getString(char *buffer) const;
/**
* @brief Get payload as string
* @return pointer to a char array storing the string
*/
const char* getString(void) const;
/**
* @brief Get custom payload
* @return pointer to the raw payload
*/
void* getCustom(void) const;
/**
* @brief Get bool payload
* @return a bool with the value of the payload (true/false)
*/
bool getBool(void) const;
/**
* @brief Get unsigned 8-bit integer payload
* @return the value of the payload, 0 to 255
*/
uint8_t getByte(void) const;
/**
* @brief Get float payload
* @return the floating-point value of the payload
*/
float getFloat(void) const;
/**
* @brief Get signed 16-bit integer payload
* @return the value of the payload, –32768 to 32767
*/
int16_t getInt(void) const;
/**
* @brief Get unsigned 16-bit integer payload
* @return the value of the payload, 0 to 65535
*/
uint16_t getUInt(void) const;
/**
* @brief Get signed 32-bit integer payload
* @return the value of the payload, –2147483648 to 2147483647
*/
int32_t getLong(void) const;
/**
* @brief Get unsigned 32-bit integer payload
* @return the value of the payload, 0 to 4294967295
*/
uint32_t getULong(void) const;
/**
* @brief Getter for command type
* @return #mysensors_command_t
*/
uint8_t getCommand(void) const;
/**
* @brief Getter for ack-flag.
* @return true if this is an ack message
*/
bool isAck(void) const;
/**
* @brief Set message type
* @param type see http://korturl.nu/stupidurl
*/
MyMessage& setType(const uint8_t type);
/**
* @brief Set which child sensor this message belongs to
* @param sensor
*/
MyMessage& setSensor(const uint8_t sensor);
/**
* @brief Set final destination node id for this message
* @param destination
*/
MyMessage& setDestination(const uint8_t destination);
/**
* @brief Set entire payload
* @param payload pointer to the buffer where the payload is stored
* @param length of the payload
*/
MyMessage& set(const void* payload, const uint8_t length);
/**
* @brief Set payload to character array
* @param value pointer to the character array. The array must be null-terminated.
*/
MyMessage& set(const char* value);
#if !defined(__linux__)
/**
* @brief Set payload to character array from flash
* @param value pointer to the character array. The array must be null-terminated.
*/
MyMessage& set(const __FlashStringHelper* value);
#endif
/**
* @brief Set payload to decimal number
* @param value float
* @param decimals number of decimals to include
*/
MyMessage& set(const float value, const uint8_t decimals);
/**
* @brief Set payload to bool value
* @param value true or false
*/
MyMessage& set(const bool value);
/**
* @brief Set payload to unsigned 8-bit integer value
* @param value (0 to 255)
*/
MyMessage& set(const uint8_t value);
/**
* @brief Set payload to unsigned 32-bit integer value
* @param value (0 to 4294967295)
*/
MyMessage& set(const uint32_t value);
/**
* @brief Set payload to signed 32-bit integer value
* @param value (–2147483648 to 2147483647)
*/
MyMessage& set(const int32_t value);
/**
* @brief Set payload to unsigned 16-bit integer value
* @param value (0 to 65535)
*/
MyMessage& set(const uint16_t value);
/**
* @brief Set payload to signed 16-bit integer value
* @param value (–32768 to 32767)
*/
MyMessage& set(const int16_t value);
#else
typedef union {
struct {
#endif
uint8_t last; //!< 8 bit - Id of last node this message passed
uint8_t sender; //!< 8 bit - Id of sender node (origin)
uint8_t destination; //!< 8 bit - Id of destination node
/**
* 2 bit - Protocol version<br>
* 1 bit - Signed flag<br>
* 5 bit - Length of payload
*/
uint8_t version_length;
/**
* 3 bit - Command type<br>
* 1 bit - Request an ack - Indicator that receiver should send an ack back<br>
* 1 bit - Is ack message - Indicator that this is the actual ack message<br>
* 3 bit - Payload data type
*/
uint8_t command_ack_payload;
uint8_t type; //!< 8 bit - Type varies depending on command
uint8_t sensor; //!< 8 bit - Id of sensor that this message concerns.
/*
* Each message can transfer a payload. We add one extra byte for string
* terminator \0 to be "printable" this is not transferred OTA
* This union is used to simplify the construction of the binary data types transferred.
*/
union {
uint8_t bValue; //!< unsigned byte value (8-bit)
uint16_t uiValue; //!< unsigned integer value (16-bit)
int16_t iValue; //!< signed integer value (16-bit)
uint32_t ulValue; //!< unsigned long value (32-bit)
int32_t lValue; //!< signed long value (32-bit)
struct { //!< Float messages
float fValue;
uint8_t fPrecision; //!< Number of decimals when serializing
};
struct { //!< Presentation messages
uint8_t version; //!< Library version
uint8_t sensorType; //!< Sensor type hint for controller, see table above
};
char data[MAX_PAYLOAD + 1]; //!< Buffer for raw payload data
} __attribute__((packed)); //!< Doxygen will complain without this comment
#if defined(__cplusplus) || defined(DOXYGEN)
} __attribute__((packed));
#else
};
uint8_t array[HEADER_SIZE + MAX_PAYLOAD + 1]; //!< buffer for entire message
} __attribute__((packed)) MyMessage;
#endif
#endif
/** @}*/