/*------------------------------------------------------
FILE NAME   : AD9958.C
DESCRIPTION : AD9958 driver.
VERSION     : 0.0.0 (C)aureole
AUTHOR      : Aureole
CREATE DATE : 4.1.2006
MODIFY DATE : ---
LOGS        :-\  
          1. First create for hardware test. 4.1.2006
          

--------------------------------------------------------*/

//-----------------Include files-------------------------//
#include "..\include\ad9958.h"
#include "..\include\spi.h"
#include "..\include\common.h"
#include "..\include\config.h"



//-----------------Function-------------------------------//


/*---------------------------------------------------------------
NAME       : set_ad9958_sync
ENTRY  TYPE: void
RETURN TYPE: void
PURPOSE    : ---
VERSION    : 0.5
DESCRIPTION: 
CREATE DATE: 4.6.2006
LOGS       : 1.first create;
-----------------------------------------------------------------*/
void set_ad9958_synchronization(void)
{
	//Enable both channel clear phase accumulator
	AD9958_CS_OFF
	AD9958_UPDATE_OFF
	send_data_to_spi(0x02);
	send_data_to_spi(0x10);
	send_data_to_spi(0x00);
	AD9958_UPDATE_ON
	AD9958_CS_ON

	//Disable both channel clear phase accumulator
	AD9958_CS_OFF
	AD9958_UPDATE_OFF
	send_data_to_spi(0x02);
	send_data_to_spi(0x00);
	send_data_to_spi(0x00);
	AD9958_UPDATE_ON
	AD9958_CS_ON		
}	

/*---------------------------------------------------------------
NAME       : set_ad9958_pll
ENTRY  TYPE: int
RETURN TYPE: unsigned int(pll multilpe sucess return 1,otherwise return 0)
PURPOSE    : ---
VERSION    : 0.1
DESCRIPTION: 
CREATE DATE: 4.5.2006
LOGS       : 1.first create;
-----------------------------------------------------------------*/
int set_ad9958_pll(unsigned int mult)
{
	
	if(mult<3 || mult>21)return 0;
	
	if(mult>(160/AD9958_CLOCK)){ //Set PLL VCO gain;
		mult<<=2;
		mult|=0x80;
	}else {
		mult<<=2;
	}
	
	
	AD9958_CS_OFF
	AD9958_UPDATE_OFF
	
	send_data_to_spi(0x01);	
	send_data_to_spi((unsigned char)mult);
	send_data_to_spi(0x00);
	send_data_to_spi(0x00);
	
	AD9958_UPDATE_ON
	AD9958_CS_ON
	
	return 1;
}
	
/*---------------------------------------------------------------
NAME       : initialize_ad9958
ENTRY  TYPE: int
RETURN TYPE: void
PURPOSE    : ---
VERSION    : 0.1
DESCRIPTION: 
CREATE DATE: 4.5.2006
LOGS       : 1.first create;
-----------------------------------------------------------------*/
void initialize_ad9958(void)
{
	INITIALIZE_AD9958_PORT
	
	AD9958_DDSCR_ON
	AD9958_DDSCR_OFF		
	set_ad9958_pll(AD9958_PLL_MULTIPLE);
}

/*---------------------------------------------------------------
NAME       : set_frequency
ENTRY  TYPE: int channel,double frequency;
RETURN TYPE: int(set frequency success return 1,else return 0);
PURPOSE    : ---
VERSION    : 0.1
DESCRIPTION: chan=0 channel a ;chan=1 channel b; chan=2 channel a&b;
	     
CREATE DATE: 4.5.2006
LOGS       : 1.first create; 
-----------------------------------------------------------------*/
 int set_frequency(int chan,double freq)
{
	unsigned char chan_temp=0;
	UN_INT freq_temp;
	int i=0;


	if(chan<0 || chan>2)return 0;
	if(freq>MAX_OUTPUT_FREQUENCY || freq<0)return 0;
	
	//select channel;
	if(chan==0)chan_temp=0x40;
		else if(chan==1)chan_temp=0x80;
			else if(chan==2)chan_temp=0xf0;
			
	freq*=(double)17.179869184;
	
	freq_temp.int_value=(unsigned int)freq;

	//Hardware operation
	AD9958_CS_OFF
	AD9958_UPDATE_OFF
	
	
	send_data_to_spi(INSTRUCTION_CSR);
	send_data_to_spi(chan_temp);
	
	
	send_data_to_spi(INSTRUCTION_CTW0);	
	send_data_to_spi(freq_temp.char_value._4);
	send_data_to_spi(freq_temp.char_value._3);
	send_data_to_spi(freq_temp.char_value._2);
	send_data_to_spi(freq_temp.char_value._1);
	
	AD9958_UPDATE_ON
	AD9958_CS_ON
 		
	set_ad9958_synchronization();
	return 1;
}

/*---------------------------------------------------------------
NAME       : set_phase
ENTRY  TYPE: int chan,float pha;
RETURN TYPE: int(set phase success return 1,else return 0);
PURPOSE    : ---
VERSION    : 0.1
DESCRIPTION: chan=0 channel a ;chan=1 channel b; chan=2 channel a&b;
	     
CREATE DATE: 4.6.2006
LOGS       : 1.first create;
-----------------------------------------------------------------*/
int set_phase(int chan,double pha)
{
	unsigned char chan_temp=0;
	unsigned short pha_temp;

	if(chan<0 || chan>2)return 0;
	if(pha>359.9 || pha<0)return 0;
	
	//select channel;
	if(chan==0)chan_temp=0x40;
		else if(chan==1)chan_temp=0x80;
			else if(chan==2)chan_temp=0xf0;
			
	pha*=45.511111111111111111111111111111;
	
	pha_temp=(unsigned short)pha;
	
	//Hardware operation
	AD9958_CS_OFF
	AD9958_UPDATE_OFF
	
	
	send_data_to_spi(INSTRUCTION_CSR);
	send_data_to_spi(chan_temp);
	
	
	send_data_to_spi(INSTRUCTION_CPW0);	
	send_data_to_spi((unsigned char)((pha_temp&0xff00)>>8));
	send_data_to_spi((unsigned char)(pha_temp&0x00ff));
	
	
	AD9958_UPDATE_ON
	AD9958_CS_ON		
	set_ad9958_synchronization();
	return 1;
}