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1、班级电科081班姓名龚浪学号080712110073实验名称D/A转换器接口实验指导教师马光喜理学院时间：2011年月日实验十二D/A转换器接口实验（设计性实验）一、实验目的：⑴熟悉单片机与D/A转换芯片的接口方法。⑵了解D/A转换芯片的转换性能及编程方法。二、实验内容：从0832输出一个从0V开始逐渐升至5V再降至0V的正弦波电压，用示波器显示其输出波形。三、实验硬件电路四、实验步骤:1.在Proteus中画出实验硬件电路；２.进入KeilC51组合软件的操作环境编辑源程序，并进行编译；此程序用C语言编写，代码如下：//EXP12#include#defineDATEP
2、0sbitsqr=P1^0;//方波选择开关sbitsin=P1^1;//正弦波选择开关sbittri=P1^2;//三角波选择开关sbittest=P1^7;//用于测试sbitWR1=P2^0;//sbitWR2=P2^1;//voiddelay(intt);//延时函数voidsqr_wave(void);//方波发生函数voidtri_wave(void);//正弦波发生函数voidsin_wave(void);//三角波发生函数voidinti(void);//初始化函数//********正弦波产生码表*******************unsignedcharcodetab
3、_sin[256]={0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0x
4、fe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,
5、0x9f,0x9c,0x99,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x0
6、9,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0
7、x45,0x48,0x4c,0x4e,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80};//******************************************************intt=10;//*******************************//主函数//********
