node-red-STM32/CM7/Middlewares/Third_Party/MQTT/MQTTInterface.h

/*
 * MQTTInterface.h
 *
 *  Created on: 2020. 4. 29.
 *      Author: https://github.com/eziya
 */

#ifndef __MQTT_INTERFACE_H_
#define __MQTT_INTERFACE_H_

#define MQTT_LWIP_SOCKET	//Use SOCKET API
//#define MQTT_LWIP_NETCONN //Use NETCONN API

typedef struct Timer Timer;

struct Timer {
	unsigned long systick_period;
	unsigned long end_time;
};

typedef struct Network Network;

struct Network
{
#ifdef MQTT_LWIP_SOCKET
	int socket;
#elif defined(MQTT_LWIP_NETCONN)
	struct netconn *conn;
	struct netbuf *buf;
	int offset;
#endif
	int (*mqttread) (Network*, unsigned char*, int, int);
	int (*mqttwrite) (Network*, unsigned char*, int, int);
	void (*disconnect) (Network*);
};


void InitTimer(Timer*);
char TimerIsExpired(Timer*);
void TimerCountdownMS(Timer*, unsigned int);
void TimerCountdown(Timer*, unsigned int);
int  TimerLeftMS(Timer*);

int  net_read(Network*, unsigned char*, int, int);
int  net_write(Network*, unsigned char*, int, int);
void net_disconnect(Network*);
void NewNetwork(Network*);
int  ConnectNetwork(Network*, char*, int);

#endif