《单片机原理与接口技术-基于单片机的设计信号发生器实验报告》由会员分享，可在线阅读，更多相关《单片机原理与接口技术-基于单片机的设计信号发生器实验报告（6页珍藏版）》请在金锄头文库上搜索。
1、单片机原理与接口技术-基于单片机的设计信号发生器实验报告课程: 单片机设计信号发生器实验报告系专业班级姓名学号指导教师学年学期2013 年 1 月7 日一功能要求;1、可以输出周期为1s的方波脉冲。2、可以输出三角波脉冲。3、可以输出锯齿波脉冲4、可以输出正弦波脉冲5、可以使用按键K1,K2,k3和k4控制输出波形二硬件设计1硬件器材D/A转换0832,89c51单片机,数据线,示波器D/A转换0832主要作用是数模转换,将输入的数字信号转换为模拟信号。2 线路连接把D/A区0832片选CS信号线接至译码输出插孔Y0。将+12V插孔、12V插孔通过导线连到外置电源上,如果电源内置时,则+12V
2、,-12V电源已连好。将D/A区WR插孔连到BUS3区XWR插孔。输出VREF 为+5V。用8芯排线将D/A区D0D7与BUS2区XD0XD7相连。K1,K2,k3,k4要与p1.0,p1.1,p1.2,p1.3相连。作为查询的端口3线路连接图三软件流程图设计和代码#include#include#define uchar unsigned char#define uint unsigned int#define DAC0832_Adr XBYTE0x8000char code sindat =0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,
3、0x9f,0xa2,0xa5,0xa8, 0xab,0xae,0xb1,0xb4,0xb7,0xbc,0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1, 0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xel,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee, 0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x
4、ff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf3,0xf2,0xf1,0xef,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,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93, 0x90,0x8d,0x89,
5、0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69, 0x66,0x63,0x60,0x5d,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43, 0x40,0x3d,0x3a,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, 0x09,0x08,0x07,0x06,0x05,0x04,0
6、x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00, 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,0x40,0x43,0x45,0x48,0x4c,0x4e,0x51,0x
7、55,0x57,0x5a,0x5d,0x60, 0x63,0x66,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80;bit flag=0; /flag=0,键未按下;flag=1,键按下void delay(uint N) /延时程序uint i;for (i=0;i0;i-)DAC0832_ConversionOnce(i);void Fun_Rectangular (void)DAC0832_ConversionOnce (0xff);delay (1000);DAC0832_ConversionOnce (0x00);delay (1000);void F
8、un_SawTooth (void)uchar i;for (i=0;i255;i+)DAC0832_ConversionOnce (i);void Fun_Sin (void)uchar i;for(i=0;i255;i+)DAC0832_ConversionOnce (sindat i); void main() /主程序uchar Key_Num;while(1)Key_Num=Key_Scan();/*if(P1!=0xff)delay(10);key=P1;if(key&0x0f!=0x0f)flag=flag;Key_Num=Key_Scan();if (Key_Num&0x0f=
9、0x0e)Fun_Triangle();else if (Key_Num&0x0f=0x0d)Fun_SawTooth();else if (Key_Num&0x0f=0x0b)Fun_Rectangular();else if (Key_Num&0x0f=0x07)Fun_Sin(); */switch (Key_Num&0x0f)case 0x0e:doFun_Triangle(); while (Key_Scan()&(flag=1);break; case 0x0d:doFun_SawTooth(); while (Key_Scan()&(flag=1);break; case 0x0
10、b:doFun_Rectangular(); while (Key_Scan()&(flag=1);break;case 0x07:doFun_Sin(); while (Key_Scan()&(flag=1);break;default: break;四设计优缺点分析优点:实验思路明确,要求简单,可以使设计者开始就明白自己要做什么。缺点:实验程序需要键入的字符过多,键入时容易出现错误链接示波器时,没有真正理解示波器的接法。五总结通过本次试验,对课本数模转换的理解更上一层楼,同时提高了自己的动手能力,团队合作能力,通过同学之间的讨论将不会的变成会的,让自己会的变成了大家会的,提高了我们对单片机整体的认识。六.设计评价1题目难度,较难,主要是需要调用的文件比较难理解2完成情况,基本输出了需要的三角波,锯齿波,矩形波,但正弦波还存在一定问题3收获情况,通过实验我们更加深入的了解了数模转换器的作用,提高了c语言编程的能力,对单片机整体的认识提高了。4存在问题,正弦波总是存在一条直线,原因是键入正弦波数字信号时出现错误。对比改正后可消除七意见建议,课程设计效果很好,建议继续保持。本文档来源于第一文库网：https:/
