求ads8344驱动程序·················

你好，ADS8344是一个ADC转换器，8路输入，8位串行控制输入，16位串行数据输出。

下面是写的程序，粘到记事本里看，百度上显得乱。

/* ADS8344 */

#define uchar unsigned char

#define uword unsigned int

sbit ADS_SHDN =

sbit ADS_CS =

sbit ADS_DCLK =

sbit ADS_DIN =

sbit ADS_BUSY =

sbit ADS_DOUT =

// (MSB) (LSB)

// BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

// SA2 A1 A0 —SGL/DIF PD1 PD0

void ads_com(uchar ads_comchar)

{

uchar i=0

for (i=8i>0i--)

{

ADS_DIN = ads_comchar&0x80//取最高位

ADS_DCLK = 0

ADS_DCLK = 1

ads_comchar<<=1//左移数据

}

}

// (MSB)(LSB)

// BIT15 ...... BIT0

uword ads_dat(void)

{

uword ads_datword = 0

uchar i=0

for (i=16i>0i--)

{

ads_datword<<=1//左移数据

ADS_DCLK = 0

if(DOUT==1) ads_datword = ads_datword|0x01//最低位或

ADS_DCLK = 1

}

return(ads_datword)

}

void main()

{

uword ADS_DataWord = 0

ADS_SHDN = 1

ADS_CS = 1

ADS_DCLK = 0

ADS_CS = 0

// SA2 A1 A0 —SGL/DIF PD1 PD0

// 1000— 1 11

ads_com(0x87)//10000111

ADS_DCLK = 0

ADS_DCLK = 1

while(ADS_BUSY == 1)

ADS_DataWord = ads_dat()

ADS_CS = 1

while(1)

}

设计了利用TMS320LF2407A 与EPM3032A 控制的ADS7805 多通道采集系统的逻辑

结构，介绍了系统的工作原理，详细描述了ADS7805、DSP 及CPLD 之间接口的硬件与软

件设计。

关键词 DSP；CPLD；ADS7805

Abstract This paper designs a logic system structure of ADS7805 muli-channel data acquisition based on TMS320LF2407A and EPM3032A, explains the system’s execution principle and decribes the hardware、software design for the interfaces among ADS7805、DSP and CPLD in details.

Keywords DSPCPLDADS7805

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