WiFiPowerMeter/MQTT/PubSubClient.h
2015-05-06 19:08:30 +02:00

76 lines
2.6 KiB
C++
Executable File

/*
PubSubClient.h - A simple client for MQTT.
Nicholas O'Leary
http://knolleary.net
*/
#ifndef PubSubClient_h
#define PubSubClient_h
#include <Arduino.h>
#include "Client.h"
// MQTT_MAX_PACKET_SIZE : Maximum packet size
#define MQTT_MAX_PACKET_SIZE 256
// MQTT_KEEPALIVE : keepAlive interval in Seconds
#define MQTT_KEEPALIVE 15
#define MQTTPROTOCOLVERSION 3
#define MQTTCONNECT 1 << 4 // Client request to connect to Server
#define MQTTCONNACK 2 << 4 // Connect Acknowledgment
#define MQTTPUBLISH 3 << 4 // Publish message
#define MQTTPUBACK 4 << 4 // Publish Acknowledgment
#define MQTTPUBREC 5 << 4 // Publish Received (assured delivery part 1)
#define MQTTPUBREL 6 << 4 // Publish Release (assured delivery part 2)
#define MQTTPUBCOMP 7 << 4 // Publish Complete (assured delivery part 3)
#define MQTTSUBSCRIBE 8 << 4 // Client Subscribe request
#define MQTTSUBACK 9 << 4 // Subscribe Acknowledgment
#define MQTTUNSUBSCRIBE 10 << 4 // Client Unsubscribe request
#define MQTTUNSUBACK 11 << 4 // Unsubscribe Acknowledgment
#define MQTTPINGREQ 12 << 4 // PING Request
#define MQTTPINGRESP 13 << 4 // PING Response
#define MQTTDISCONNECT 14 << 4 // Client is Disconnecting
#define MQTTReserved 15 << 4 // Reserved
#define MQTTQOS0 (0 << 1)
#define MQTTQOS1 (1 << 1)
#define MQTTQOS2 (2 << 1)
class PubSubClient {
private:
Client* _client;
uint8_t buffer[MQTT_MAX_PACKET_SIZE];
uint16_t nextMsgId;
unsigned long lastOutActivity;
unsigned long lastInActivity;
bool pingOutstanding;
void (*callback)(char*,uint8_t*,unsigned int);
uint16_t readPacket();
uint8_t readByte();
boolean write(uint8_t header, uint8_t* buf, uint16_t length);
uint16_t writeString(char* string, uint8_t* buf, uint16_t pos);
uint8_t *ip;
char* domain;
uint16_t port;
public:
PubSubClient(Client& client);
PubSubClient(uint8_t *, uint16_t, void(*)(char*,uint8_t*,unsigned int),Client& client);
PubSubClient(char*, uint16_t, void(*)(char*,uint8_t*,unsigned int),Client& client);
boolean connect(char *);
boolean connect(char *, char *, char *);
boolean connect(char *, char *, uint8_t, uint8_t, char *);
boolean connect(char *, char *, char *, char *, uint8_t, uint8_t, char*);
void disconnect();
boolean publish(char *, char *);
boolean publish(char *, uint8_t *, unsigned int);
boolean publish(char *, uint8_t *, unsigned int, boolean);
boolean publish_P(char *, uint8_t PROGMEM *, unsigned int, boolean);
boolean subscribe(char *);
boolean loop();
boolean connected();
};
#endif