Помогите с кодом для приемопередатчика MRF49XA.

Например для передачи простого байта.



Кода для передатчика:

#include <mega8535.h>
#include <delay.h>


/******************************************************					 
 *****	 MRF49XA COMAMAND BYTE TO REGISTERS	 ***** 
 *****************************************************/
#define COMMAND_BYTE_STSREG 0x00
#define COMMAND_BYTE_GENCREG 0x80
#define COMMAND_BYTE_AFCCREG 0xC4
#define COMMAND_BYTE_TXCREG 0x98
#define COMMAND_BYTE_TXBREG 0xB8
#define COMMAND_BYTE_CFSREG 0xA0
#define COMMAND_BYTE_RXCREG 0x94
#define COMMAND_BYTE_BBFCREG 0xC2
#define COMMAND_BYTE_RXFIFOREG 0xB2
#define COMMAND_BYTE_FIFORSTREG 0xCA
#define COMMAND_BYTE_SYNBREG 0xCE
#define COMMAND_BYTE_DRSREG 0xC6
#define COMMAND_BYTE_PMCREG 0x82
#define COMMAND_BYTE_WTSREG 0xE0
#define COMMAND_BYTE_DCSREG 0xC8
#define COMMAND_BYTE_BCSREG 0xC0
#define COMMAND_BYTE_PLLCREG 0xCC

/*****************************************************					 
 *****	 MRF49XA DATA SETTING TO REGISTERS	 ***** 
 ****************************************************/

#define GENCREG_OPS1 0x18  //433MHz 12.5pF
#define AFCCREG_OPS1 0xD7
#define TXCREG_OPS1 0x30
#define TXBREG_OPS1 0x00
#define CFSREG_OPS1 0xC8  // 430.5MHz Fval = 200
#define RXCREG_OPS1 0xA1 
#define BBFCREG_OPS1 0x2C
#define RXFIFOREG_OPS1
#define FIFORSTREG_OPS1 0x81
#define SYNBREG_OPS1
#define DRSREG_OPS1 0x23
#define PMCREG_OPS1 0x00
#define WTSREG_OPS1
#define DCSREG_OPS1
#define BCSREG_OPS1
#define PLLCREG_OPS1

/******************************************					 
 *****	 SPI DIRECTION REGISTER	 ***** 
 ******************************************/
#define SPI_PORT_SS 0
#define SPI_PORT_MOSI 5
#define SPI_PORT_MISO 6
#define SPI_PORT_SCK 7


/******************************************					 
 *****	 SPI CHIP SELECT CONTROL	***** 
 ******************************************/
#define SPI_ACTIVE_SS(PORT,BIT) PORT &= ~(1<<BIT)
#define SPI_UNACTIVE_SS(PORT,BIT) PORT |= (1<<BIT)


/**********************************************					 
*****	 SPI 16-BIT DATA RECEIVE ACCESS  ***** 
**********************************************/

void SPI_write ( unsigned char command_byte, unsigned char data ) 
	{
		SPI_ACTIVE_SS(PORTB,SPI_PORT_SS); 

		SPDR = command_byte;

		while (!(SPSR & (1<<SPIF)));

		SPDR = data;			 

		while (!(SPSR & (1<<SPIF)));

		SPI_UNACTIVE_SS(PORTB,SPI_PORT_SS);
	}


unsigned char SPI_read(unsigned char command_byte)
	{
		SPI_ACTIVE_SS(PORTB,SPI_PORT_SS); 

		SPDR = 0x00; 

		while(!(SPSR & (1<<SPIF)));			

		SPI_UNACTIVE_SS(PORTB,SPI_PORT_SS);

		return SPDR;
	} 

void mrf49xa_initialization (void)
	{
		delay_ms(10);
		SPI_write(COMMAND_BYTE_FIFORSTREG,FIFORSTREG_OPS1);
		SPI_write(COMMAND_BYTE_FIFORSTREG,FIFORSTREG_OPS1|0x02);
		SPI_write(COMMAND_BYTE_GENCREG, GENCREG_OPS1);
		SPI_write(COMMAND_BYTE_AFCCREG, AFCCREG_OPS1);
		SPI_write(COMMAND_BYTE_CFSREG,CFSREG_OPS1);
		SPI_write(COMMAND_BYTE_DRSREG,DRSREG_OPS1);
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1);
		SPI_write(COMMAND_BYTE_RXCREG,RXCREG_OPS1);
		SPI_write(COMMAND_BYTE_TXCREG, TXCREG_OPS1);
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1 | 0x20);
		delay_ms(5); 
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1 | 0x80);
		SPI_write(COMMAND_BYTE_GENCREG, GENCREG_OPS1 | 0x40);
		SPI_write(COMMAND_BYTE_FIFORSTREG,FIFORSTREG_OPS1);
		SPI_write(COMMAND_BYTE_FIFORSTREG,FIFORSTREG_OPS1|0x02);




	}

void mrf49_send_byte(unsigned char data)
	{
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1);
		SPI_write(COMMAND_BYTE_GENCREG, GENCREG_OPS1|0x80);
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1|0x20); 
		SPI_write(COMMAND_BYTE_TXBREG,0xAA);
		SPI_write(COMMAND_BYTE_TXBREG,data); 
		SPI_write(COMMAND_BYTE_PMCREG,PMCREG_OPS1|0x80);
		SPI_write(COMMAND_BYTE_GENCREG, GENCREG_OPS1|0x40);
		SPI_write(COMMAND_BYTE_FIFORSTREG,FIFORSTREG_OPS1|0x02); 
	} 
void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTA=0x00;
DDRA=0x00;

// Port B initialization
// Func7=Out Func6=In Func5=Out Func4=Out Func3=In Func2=In Func1=In Func0=In 
// State7=0 State6=T State5=0 State4=0 State3=T State2=T State1=T State0=T 
DDRB = (1<<SPI_PORT_SCK)|(1<<SPI_PORT_MOSI)|(1<<SPI_PORT_SS);
SPI_UNACTIVE_SS(PORTB, SPI_PORT_SS);
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTC=0x01;
DDRC=0x00;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;

// SPI initialization
// SPI Type: Master
// SPI Clock Rate: 4000,000 kHz
// SPI Clock Phase: Cycle Half
// SPI Clock Polarity: Low
// SPI Data Order: MSB First
SPCR=0x50;
SPSR=0x00;
mrf49xa_initialization();

while (1)
	  {
	  //if (PINA&0x01)
	  delay_ms(1000);
		mrf49_send_byte(254);
	  // Place your code here

	  };
}

А вот код для приемника не могу понять как написать и даже сомневаюсь в правильности кода передатчика. Даташит прикрепил. помогите кто сталкивался и кто хорошо умеет читать на английском.
Раздел: Периферия и внешние устройства