//#include <avr/io.h>
//#include <avr/interrupt.h>
//#include <stdlib.h>

//#include "global.h"
#include "rf02.h"

//#define F_CPU 16000000UL
#include <util/delay.h>

#define RF_PORT	PORTB
#define RF_DDR	DDRB
#define RF_PIN	PINB

#define LED_PORT	PORTD
#define LED_DDR		DDRD
#define LED_PIN		PIND

#define LED0	4 -- PD4
#define LED1	2 -- PD2

#define SDI		0	// SDI,  -> RF02  // 14 --PB0
#define SCK		1	// SCK,  -> RF02   --PB1
#define CS		2	// nSEL, -> RF02   --PB2
#define IRQ		4	// nIRQ, <- RF02   --PB4
// FCK not connect !!!


// FSK: Pullup oder Pulldown

void rf02_trans(unsigned short wert)
{	unsigned char i;

	cbi(RF_PORT, CS);

	for (i=0; i<16; i++)
	{	if (wert&0x8000) //0x8000
			sbi(RF_PORT, SDI);
		else
			cbi(RF_PORT, SDI);

		sbi(RF_PORT, SCK);
		wert<<=1;
		_delay_us(0.3);
		cbi(RF_PORT, SCK);
	}
	sbi(RF_PORT, CS);
}



void rf02_init(void)
{
	RF_PORT=(1<<CS);
	RF_DDR=(1<<SDI)|(1<<SCK)|(1<<CS);

	for (unsigned char i=0; i<15; i++)
		_delay_ms(10);			// wait until POR done
	rf02_trans(0xC0E0);			// power settings
	rf02_trans(0x8A75);// fsk in rfm02 = afc in rf12
//		rf02_trans(0x80C7);
	rf02_trans(0xC2A0);			// enable tx sync bit, disable low bat detector

//	LED_DDR= 0xFF;
}

void rf02_setmodfreq(unsigned char bandwidth)
{
	rf02_trans(0x8F80|(bandwidth&7));
	//rf02_trans(0x8F70);
}

void rf02_setfreq(unsigned short freq)
{	if (freq<96)				// 430,2400MHz
		freq=96;
	else if (freq>3903)			// 439,7575MHz
		freq=3903;
	rf02_trans(0xA000|freq);

	//rf02_trans(0xA640); //0xC0 434.0mhz
}

void rf02_setpower(unsigned char power)
{
	rf02_trans(0xB000|((power&7)<<8));
}

void rf02_setbaud(unsigned short baud)
{
 
	if (baud<1345)
		baud=1345;
	if (baud<19000)
		rf02_trans(0xD240);		// 25% PLL current
	else if (baud<37000)
		rf02_trans(0xD2C0);		// 33% PLL current
	else
		rf02_trans(0xD200);		// 50% PLL current

	//rf02_trans(0xC800|((344828UL/baud)-1));	// Baudrate= 344827,59/(R+1)
 
	rf02_trans(0xC806);
}

void rf02_txdata(unsigned char *data, unsigned char number)
{	unsigned char i,wert;
	wert=0xC6;          //1100 0110
	cbi(RF_PORT, CS);   //nSel

	for (i=0; i<8; i++)
		{	if (wert&0x80)   //1000 0000 = 80
				sbi(RF_PORT, SDI);
			else
				cbi(RF_PORT, SDI);

			sbi(RF_PORT, SCK);
			wert<<=1;
			_delay_us(0.2);
			cbi(RF_PORT, SCK);
		}

	rf02_shiftout(0xAA);//10101010
	rf02_shiftout(0xAA);
	rf02_shiftout(0xAA);
	rf02_shiftout(0x2D);//00101101
	rf02_shiftout(0xD4);//11010100

	for (i=0; i<number; i++)
		rf02_shiftout(*data++);

	sbi(RF_PORT, CS);
	while(RF_PIN&(1<<IRQ));		// wait until transfer done
	rf02_trans(0xC464);			// TX off after 10us


	//blinkLED();
}

void rf02_shiftout(unsigned char wert)
{	unsigned char j;
	for (j=0; j<8; j++)
	{	while(RF_PIN&(1<<IRQ));
    	while(!(RF_PIN&(1<<IRQ)));

		if (wert&128)             //100101000
    		sbi(RF_PORT, SDI);
    	else
    		cbi(RF_PORT, SDI);
    	wert<<=1;
    }
}
/*
void blinkLED(void){
	for (unsigned char i=0; i<15; i++)
		_delay_ms(10);

	sLED0();

	for (unsigned char i=0; i<15; i++)
		_delay_ms(10);

	cLED0();

}

void makePulse(char numberOfPulses){
	if ( numberOfPulses > 0)
	{
	for (unsigned char i=0; i<numberOfPulses; i++)
		{
			_delay_ms(200);
			sLED0();
			_delay_ms(200);
			cLED0();			
		}
		_delay_ms(100);
	}

}

*/