用的MSP430的单片机，cs5532能正常读写寄存器，复位也正常
就是读不出转换结果，不过32位结果后8位标志位可以显示通道号...
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void CS5532_Init()
{
unsigned short i;
P3OUT &= 0xFE; CS使能
Delay();
//CS5532初始化
for(i=0;i<15;i++)
{
cs5532_write(0xFF);
}
cs5532_write(0xFE);
cs5532_write(0x03);
cs5532_write(0x20);
cs5532_write(0x00);
cs5532_write(0x00);
cs5532_write(0x00);
//等待复位完成
cs5532_write(0x0b);
test=0;
test|=cs5532_read();
test<<=8;
test|=cs5532_read();
test<<=8;
test|=cs5532_read();
test<<=8;
test|=cs5532_read();
//CS5532写选择通道寄存器1
cs5532_write(0x05);
cs5532_write(0x02); //选择物理通道1，增益1，7.5hz，双极性，setup1
cs5532_write(0x08);
cs5532_write(0x42); //选择物理通道2，增益1，7.5hz，双极性, setup2
cs5532_write(0x08);
//CS5532写配置寄存器，初始化电压参考模型
cs5532_write(0x03);
cs5532_write(0x02); //参考电压 1V<=Vref<=VA+
cs5532_write(0x00);
cs5532_write(0x00);
cs5532_write(0x00);
//校准
cs5532_write(0x81); //setup1（通道1）自偏移校准
Delay1();
cs5532_write(0x89); //setup2（通道2）自偏移校准
Delay1();
}
void CS5532_AD()
{
unsigned short i;
Delay();
for(i=0;i<8;i++)
{
Ua_temp[i]=0;
}
//AD转换
cs5532_write(0x80);
Delay1();
cs5532_write(0x0c);
Delay();
Ua_temp[0] |= cs5532_read();
Delay();
Ua_temp[1] |= cs5532_read();
Delay();
Ua_temp[2] |= cs5532_read();
Delay();
Ua_temp[3] |= cs5532_read(); //状态字节(溢出位和通道指示）
cs5532_write(0x88); //通道2 setup2
Delay1();
cs5532_write(0x0c);
Delay();
Ua_temp[4] |= cs5532_read();
Delay();
Ua_temp[5] |= cs5532_read();
Delay();
Ua_temp[6] |= cs5532_read();
Delay();
Ua_temp[7] |= cs5532_read(); //状态字节(溢出位和通道指示）
Delay();
}
void cs5532_write(unsigned char data)
{
unsigned char i;
for(i=0;i<8;i++)
{
P3OUT &= 0xF7; //SCLK=0
if((data & 0x80) == 0x80)
{
P3OUT |= 0x02; //SDI=1
}
else
{
P3OUT &= 0xFD; //SDI=0
}
P3OUT |= 0x08; //SCLK=1
data<<=1;
Delay2();
}
}
unsigned short cs5532_read(void)
{
unsigned char i;
unsigned short data=0;
for(i=0;i<8;i++)
{
P3OUT &= 0xF7;
if((P3IN & 0x04) == 0x04) //SDO读数
{
data |= 0x01;
}
else
{
data &= 0xFE;
}
if(i<7)
{
data<<=1;
}
P3OUT |= 0x08;
Delay2();
}
return(data);
}
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