#include "X5045.h"

//unsigned char rda[8];
//unsigned char cs_rda[8];
 
//看門狗寫使能子程序
void wren_dog(void)
{
	// unsigned char com;
	// com=0x06;//WREN;
	SCK=0;
	CS=0;
	in_byte(0x06);
	SCK=0;
	CS=1;
}

//看門狗寫禁止子程序
void wrdi_dog(void)
{
	//unsigned char com;
	//com=0x04;//WRDI;
	SCK=0;
	CS=0;
	in_byte(0x04);
	SCK=0;
	CS=1;
}



//寫狀態寄存器
void wrsr_dog(unsigned char status_reg)
{
	// unsigned char com=0x01;//WRSR;
	SCK=0;
	CS=0;
	in_byte(0x01);
	in_byte(status_reg);
	SCK=0;
	CS=1;
	wip_poll();
}


//讀狀態寄存器
unsigned char rdsr_dog(void)
{
	// unsigned char com=0x05;//RDSR;
	SCK=0;
	CS=0;
	in_byte(0x05);
	return(out_byte());
	SCK=0;
	CS=1;
}

//字節讀
unsigned char byte_read(unsigned char H,unsigned char L)
{
	unsigned char data_dog,add;
	SCK=0;
	CS=0;
	SO=1;
	SI=1;
	add=H<<3;
	add|=0x03;//READ;
	in_byte(add);
	add=L;
	in_byte(add);
	data_dog=out_byte();
	SCK=0;
	CS=1;
	return(data_dog);
}
//字節寫
//H,地址高字節；L地址低字節；D寫入的數據
void byte_write(unsigned char H,unsigned char L,unsigned char D)
{	
	unsigned char data_dog,add;
	SCK=0;
	CS=0;
	SO=1;
	SI=1;
	add=H<<3;
	add|=0x02;//WRTE;
	in_byte(add);
	add=L;
	in_byte(add);
	data_dog=D;
	in_byte(data_dog);
	CS=1;
	wip_poll();
}
//復位看門狗子程序
void rest_dog(void)
{
	CS=0;
	CS=1;
}


//檢驗寫操作是否結束。
unsigned char wip_poll(void)
{
	unsigned char i;
	unsigned char wip;
	for(i=0xff;i>=1;i--) 
	{
		wip=rdsr_dog();
		wip&=0x01;
		if(wip==0) break;
	}
	return(wip);

}

//單字節指令或數據寫入X25045
//在SI線上輸入的數據在SCK的上升沿被鎖存。
void in_byte(unsigned char byt)
{
	unsigned char i;
	//SCK=0;
	//CS=0;
	for(i=8;i>=1;i--)
	{
		SCK=0; 
		SI=byt&0x80; 
		SCK=1; 
		byt=byt<<1; 
	}
	// SI=0;
	// SCK=0;
	// CS=1;
}

//單字節數據從X25045讀到單片機
//數據由SCK的下降沿輸出到SO線上。
unsigned char out_byte(void)
{
	unsigned char i;
	unsigned char byt;
	//SO=1;
	//SCK=0;
	//CS=0;
	for(i=8;i>=1;i--)
	{
		byt=byt<<1;
		SCK=1;
		SCK=0; 
		byt|=SO; 
	}
	//SCK=0;
	//CS=1;
	return (byt);
}