#include <AT89X52.h>
#include <ABSACC.h>
#include <intrins.h>
#include <stdio.h>
#define uint  unsigned int
#define uchar unsigned char
//配置口定義//
sbit TXEN    =    P2^6;
sbit TRX_CE =    P2^5;
sbit PWR    =    P2^4;
//SPI口定義//
sbit MISO    =    P2^3;
sbit MOSI    =    P2^2;
sbit SCK    =    P2^1;
sbit CSN    =    P2^0;
//sbit P2_0  = P2^0;
//狀態(tài)輸出口//
sbit AM 	=P3^2;
sbit DR        =    P3^3;
sbit LCD    =    P3^4;

//RF寄存器配置//
unsigned char idata RFConf[11]=
{
    0x00,        //配置命令//
    0x6C,        //CH_NO,配置頻段在433.2MHZ
    0x0E,        //輸出功率為10db,不重發(fā)，節(jié)電為正常模式
    0x44,        //地址寬度設(shè)置，為4字節(jié)
    0x03,0x03,    //接收發(fā)送有效數(shù)據(jù)長度為3字節(jié)
    0xE7,0xE7,0xE7,0xE7,    //接收地址
    0xC0,        //CRC充許，16位CRC校驗16M晶振
};

uchar TxRxBuffer[5];
bit lcdbit;
///////////延時/////////////////
void Delay(uint x)
{
    uint i;
    for(i=0;i<x;i++){
        _nop_();
    }
}

////////////用SPI口寫數(shù)據(jù)至NRF905內(nèi)//////////
void SpiWrite(unsigned char b)
{
    unsigned char i=8;
    while (i--)
    {
        Delay(10);
        SCK=0;
        MOSI=(bit)(b&0x80);
        b<<=1 ; 
        Delay(10);
        SCK=1; 
        Delay(10);
        SCK=0;
    }
    SCK=0;
}
///////////////from 905 read data////////////////
unsigned char SpiRead(void)
{
    register unsigned char i=8;
    unsigned char ddata=0;
    while (i--)
    {
        ddata<<=1 ;
        SCK=0;
        Delay(20);
        ddata|=MISO;
        SCK=1 ;
        Delay(20);
    }
    SCK=0;
    return ddata;
}
///////////////接收數(shù)據(jù)包/////////////////
void RxPacket(void)
{
    uchar i;
    i=0;
    while(DR)
    {
        TxRxBuffer[i] = SpiRead();
        i++;
    }
}

/*
;寫發(fā)射數(shù)據(jù)命令:20H
;讀發(fā)射數(shù)據(jù)命令:21H
;寫發(fā)射地址命令:22H
;讀發(fā)射地址命令:23H
;讀接收數(shù)據(jù)命令:24H
*/
void TxPacket(void)
{   PWR=1;
    TXEN=1;
    CSN=0;
    SpiWrite(0x22);        //寫發(fā)送地址,后面跟4字節(jié)地址//
    SpiWrite(0xE7);
    SpiWrite(0xE7);
    SpiWrite(0xE7);
    SpiWrite(0xE7);
    CSN=1;
    Delay(2);
    CSN=0;
    SpiWrite(0x20);        //寫發(fā)送數(shù)據(jù)命令,后面跟三字節(jié)數(shù)據(jù)//
    SpiWrite(0x01);
    SpiWrite(0x02);
    SpiWrite(0x03);
    CSN=1;
    Delay(2);
    TRX_CE=1;                    //使能發(fā)射模式//
    Delay(100);                    //等帶發(fā)送完成//
   	TRX_CE=0;
    while(!DR);

}
////////////////等待接收數(shù)據(jù)包///////////////////
uchar temp;
void Wait_Rec_Packet(void)
{
    TXEN=0;
    TRX_CE=1;
	PWR=1;
	Delay(1000);
    while(1)
    { //if (LCD==1) P0=~P0;
        if(DR)
        { //P0=~P0;
            TRX_CE=0;            //如果數(shù)據(jù)準備好，則進入待機模式，以便SPI口操作
            CSN=0;
            SpiWrite(0x24);
            RxPacket();
            CSN=1;
            temp=TxRxBuffer[0]+TxRxBuffer[1]+TxRxBuffer[2];
            if(temp==0x06){        
                lcdbit=!lcdbit;
                LCD=lcdbit;     
		        P0=~P0;
				//如果接收的數(shù)據(jù)正確
            }
            break;
        }
    }
}
////////////初始化配置寄存器////////////////
void Ini_System(void)
{
    uchar i;
    LCD=0;
    Delay(10000);
    LCD=1;
    lcdbit=1;
    CSN=1;
    SCK=0;
    PWR=1;
    TRX_CE=0;
    TXEN=0;
    Delay(2);
    CSN=0;

    SpiWrite( 0x00);        //配置命令//
    SpiWrite( 0x6C);        //CH_NO,配置頻段在433.2MHZ
    SpiWrite( 0x0E);        //輸出功率為10db,不重發(fā)，節(jié)電為正常模式
    SpiWrite( 0x44);        //地址寬度設(shè)置，為4字節(jié)
    SpiWrite( 0x03);SpiWrite( 0x03);    //接收發(fā)送有效數(shù)據(jù)長度為3字節(jié)
    SpiWrite( 0xE7);SpiWrite( 0xE7);SpiWrite( 0xE7);SpiWrite( 0xE7);    //接收地址
    SpiWrite( 0xDE); 


    /*for(i=0;i<11;i++){
        SpiWrite(RFConf[i]);
    }*/
    CSN=1;
    PWR=1;
    TRX_CE=1;
    TXEN=0;
    Delay(1000);
}







#define max_len_string 8
#define INBUF_LEN 4   //數(shù)據(jù)長度
char checksum,count3;
char inbuf1[max_len_string];
bit  read_flag=0;


void delay();
void send_char_com(char ch)
{
    SBUF=ch;
    while(TI==0);
    TI=0;
}

void send_string_com( char *str,int strlen)//發(fā)送數(shù)據(jù)幀格式:02-數(shù)據(jù)-校驗和-03
{   char sum;

    int k=0;
    //send_char_com(02);
    do
    {   //sum^=*(str+k);
        send_char_com(*(str + k));
        k++;
    } while(k < strlen);
	//send_char_com(sum);
	//send_char_com(03);
}


void serial () interrupt 4 using 3
{
    if(RI)
    {
        char ch;
        RI = 0;
        ch=SBUF;
        if(ch>127)
        {
             count3=0;
             inbuf1[count3]=ch;
             checksum= ch-128;
        }
        else
        {
             count3++;
             inbuf1[count3]=ch;
             checksum ^= ch;
             if( (count3==(INBUF_LEN-1)) && (!checksum) )
             {
                 read_flag=1;  //如果串口接收的數(shù)據(jù)達到INBUF_LEN個，且校驗沒錯，
                               //就置位取數(shù)標志
             }
        }
    }
}


void init_serial()
{
PCON = 0x80;
SCON = 0x50; //串口方式1,允許接收
TMOD = 0x20; //定時器1定時方式2
TCON = 0x40; //設(shè)定時器1開始計數(shù)
TH1 = 0xE6; //11.0592MHz 1200波特率
TL1 = 0xE6;
TI = 1;
TR1 = 1; //啟動定時器}

}








        
void main(void)
{
    uchar i;
 init_serial();
 Ini_System();
 PWR=0;
 P0=0;
 DR=0;
 //TxPacket();
 send_string_com("Test_OK:",8);
    while(1)
    { 
   Wait_Rec_Packet();        //等待接收完成
   send_string_com("Test_OK:",8);
    send_string_com(TxRxBuffer,5);
  //  for(i=0;i<2;i++)
  //  Delay(65530);
  //TxPacket();
   //Delay(50000);
 	P0=~P0;
    }
}