/*
 * AUTHOR : Xavier Bruni
 *
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * As long as you retain this notice you can do whatever you want with this
 * stuff. If we meet some day, and you think this stuff is worth it, you can
 * buy me a beer in return.
 * ----------------------------------------------------------------------------
 */	

#define LIB_JELLING
#define BLUETOOTH_H_INCLUDED

extern "C"{
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include "MonochromeLib.h"
	#include "syscall.h"
	#include "libfx.h"
	#include "others.h"
}

#include "libJelling/message.h"

/*
This bluetooth library is working with the 3-pin port of your calculator.
This library is compatible with SuperH-3 and SuperH-4 processor :
This include : Graph 35+, 75, 85 & 95.
This library has been written for the following bluetooth module : HC-05, HC-06
RAM can contain approximately 50KO of data. Each message can't do more than 32KO
You can't send more than 1ko -including header- from your smartphone to the calculator. In fact, the reception buffer has a size of 1ko max.
Without the header : 1000 - 46 = 954o
for sending : 256-46 = 210
If the 32 ko buffer is full, it will return a FUL packet.
*/


class Bluetooth{

public:

	Bluetooth();

	// listen for new message. This function is non blocking. maxSize is the maximum length of message to receive.
	// it will return NOT_ENOUG_RAM if it can not allocate that much. call this function early in your code, you'll have more chance to have enough ram.
	// There is no maximum restriction, but RAM is about 50KO. 32KO should be the maximum.
	int listen(int maxSize, int timer, void(*)(void), int time);

	// Properly terminate the bluetooth communication.
	int stop();

	// Send a message. There is no maximum size. Indead, you will be limited by the RAM size (approx. 50ko)
	int sendMessage(Message *message);

	// get last message.
	Message& getLastMessage();

	// set the sender name (for header)
	int setSender(const char *senderName);

	// set message ID
	int setID(unsigned int id);

	// set it to 1 if you want to allow message reception. it will delete previous message on new reception !! save it if you would like to keep it !!
	unsigned int allowReception;
	unsigned int unread;

	// point on the 32ko of data.
	char* ptr;
	// point to the 1ko to receive
	char* ptr1ko;

	// call by a timer every 25ms. It CAN NOT recept more than 1 ko in a row.
	// use (5) and (6) to send bigger message from your device. 
	void receptMessage();
	int timer;

private:
	// total size of all send packet
	int sentPacketsTotalSize;
	// total szie of all received packets
	int receivedPacketsTotalSize;
	int max;
	char sender[10];
	unsigned int caltoID;
	unsigned int androidID;
	unsigned int secondTry;
	// for ACK
	char lastType;
	unsigned int lastID;
	bool isWaitingAck;

	// Keep the last message in memory
	Message msg;

};

#define RETURN Timer_Start(this->timer);return;