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<img src="bbs_content.jsp_files/pixel.gif" height="1" width="7">2005-09-26,08:12:46
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【12楼】 <font color="#000000">biansf2001 花溅泪</font><br>
<img src="bbs_content.jsp_files/armok0131242.GIF" height="96" width="120"><br>
积分:<font color="#000000">626</font><br>
派别:<font color="#000000"></font><br>
等级:<font color="#000000">------</font><br>
来自:<font color="#000000">河南郑州</font><br>
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<font color="#000000">const unsigned char ADInitData[35]=
<br> {0x41,
<br> 0xfe,0x00,0x00,0x00, //通道0
<br> 0xfe,0x00,0x00,0x00, //通道1
<br> 0xfe,0x00,0x00,0x00, //通道2
<br> 0xfe,0x00,0x00,0x00, //通道3
<br> 0x45,
//设置所有通道设置寄存器
<br> 0x31,0xc0,0x31,0xc0,
//0x31:12.5Hz,通道1(1、2脚)
<br> 0x31,0xc0,0x31,0xc0,
//0x71,通道2(19、20脚)
<br> 0x31,0xc0,0x31,0xc0,
<br> 0x31,0xc0,0x31,0xc0,
<br> 0xc0};
//执行多路连续转换
<br>const unsigned char ADResetData[6]=
<br> {0xfe,0x03,0x20,0x00,0x00,0x00}; //配置寄存器RS位置1,AD复位
<br>//cs5532操作IO延时
<br>void AD_delay(void)
<br>{
<br>}
<br>//cs5532写寄存器
<br>void AD_write(unsigned char byte)
<br>{
<br> unsigned char i,data;
<br> data=byte;
<br> for(i=0;i<8;i++)
<br> {
<br> if((data&0x80)==0x80) PORTB|=(1<<AD_SDI);
<br> else PORTB&=~(1<<AD_SDI);
<br> AD_delay();
<br> PORTD|=(1<<AD_SCLK);//sclk=1
<br> AD_delay();
<br> PORTD&=~(1<<AD_SCLK);//sclk=0
<br> AD_delay();
<br> data<<=1;
<br> }
<br>}
<br>//cs5532读寄存器
<br>unsigned char AD_read(void)
<br>{
<br> unsigned char i,data=0;
<br> PORTD&=~(1<<AD_SCLK);//sclk=0
<br> AD_delay();
<br> for(i=0;i<8;i++)
<br> {
<br> data<<=1;
<br> if(((PIND>>AD_SDO)&0x01)==0x01) data|=0x01;
<br> AD_delay();
<br> PORTD|=(1<<AD_SCLK);//sclk=1
<br> AD_delay();
<br> PORTD&=~(1<<AD_SCLK);//sclk=0
<br> AD_delay();
<br> }
<br> return(data);
<br>}
<br>//初始化cs5532
<br>void Init5532(void)
<br>{
<br> unsigned char i,data=0;
<br> for(i=0;i<15;i++)
AD_write(0xff);
//初始化序列
<br> for(i=0;i<6;i++)
AD_write(ADResetData[i]); //复位cs5532
<br> while(data!=0x10) //等待AD复位
<br> {
<br> AD_write(0x0b); //读配置寄存器
<br> data=AD_read();
<br> AD_read();
<br> AD_read();
<br> AD_read();
<br> }
<br> for(i=0;i<35;i++)
<br> {
<br> AD_write(ADInitData[i]);
<br> }
<br>}
<br>//cs5532采样
<br>void AD_sample(void)
<br>{
<br> unsigned char data[4];
<br> AD_write(0x0c);
<br> data[3]=0;
<br> data[2]=AD_read();
<br> data[1]=AD_read();
<br> data[0]=AD_read();
<br> AD_read();//状态字节(溢出位和通道指示),没有用到,丢弃
<br>.............
<br>}</font>
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