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1、/*/* 信号发生器 （正弦波，方波，三角波） */*/#include#include #define uchar unsigned char#define uint unsigned intsbit cs=P20;/tlc5615 片选端口sbit clk=P21;/tlc5615 时钟线sbit din=P22;/tlc5615 传输端口sbit key1=P10;sbit key2=P11;/按键的单片机接口uchar keydat;uchar flag;/波形发生终止信号的标志位 一旦被置零立马停止发信号uchar flagsqu;/方波高低电平控制为（运用定时器1 中断控制）uch
2、ar m,num;uchar dat=0xff;uchar code tosin141=/正弦波的编码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,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63
3、,0x66,0x69,0x6c,0x6f,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7e,0x7f,0x80,0x7f,0x7e,0x7e,0x7d,0x7c,0x7b,0x7a,0x79,0x78,0x77,0x76,0x75,0x74,0x73,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30
4、,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00;void delay(uchar z)/延时函数uchar x,y;for(x=0;x0;y-);void prepare()/tlc5615 的初始化cs=1;din=1;clk=0;cs=0;/cs 的上升沿和下降沿必须在 clk为低时进?/* 用中断来产生方波void Squtra
5、nslator()TR1=1;/启动定时器 1 控制高低电平的持续时间 占空比dodo_wave=0;while(!flagsqu) /如果一旦终止信号的/产生可以立马退出循环flagsqu=0;do_wave=1;while(!flagsqu) flagsqu=0;while(flag);flag=1;TR1=0;*/void Squtranslator()/方波函数uchar j;uchar dat1=0x7f;while(flag)doprepare();dat=dat1;for(j=0;j7);/将数据的最高位赋给 dinclk=1;dat=dat7);/将数据的最高位赋给 dincl
6、k=1;dat=dat7);/将数据的最高位赋给 dinclk=1;dat=dat7);/将数据的最高位赋给 dinclk=1;dat1=dat11;/一位位的传输clk=0;if(flag=0)break;cs=1;/cs 的上升沿和下降沿必须在 clk 为低时进行delay(1);/稍加延时if(flag=0)break;while(flag);/等待控制键的暂停void keyscan()/切换功能按键返回键值函数uchar i;for(i=0;i4;i+)if(key1=0)delay(10);if(key1=0)keydat+;dowhile(!key1);/松手检测if(keyda
7、t=4)keydat=1;/加满回零处理void keycountrl()/切断输出控制函数if(key2=0)delay(10);if(key2=0)flag=0;dowhile(!key2);/松手检测void main ()uchar temp;TMOD=0x01;/确定定时器的工作方式TH0=(65536-50000)/256;/给定时器 0 赋予初值TL0=(65536-50000)%256;EA=1;/开总中断ET0=1;/开启定时器 0 中断TR0=1;while(1)doswitch(keydat)case 1:flag=1;doSintranslator(tosin,141)
8、;while(flag);break;case 2: flag=1;doTratranslator();while(flag);break;case 3: flag=1;doSqutranslator();while(flag);break;default:break;while(flag);temp=keydat;/装载键值while(keydat=temp);/在这里等待键值的改变void Time0() interrupt 1TH0=(65536-50000)/256;/定时器 0 用来扫描按键不断地扫描 dTL0=(65536-50000)%256;num+;if(num=4)keyscan();keycountrl();num=0;
