用DDSAD9854产生各种波形程序集

1、用DDS AD9854产生各种波形程序集本程序集包含以下波形的程序：正弦波，三角波，AM调制，FM调制，ASK调制，PSK调制,FSK调制最后还有一个包含 12864 液晶显示、 7290 键盘控制的可以输出 正弦波，三角波，方波（由单片机产生），AM调制，FM调制，ASK调 制和PSK调制的一个DDS函数发生器的综合系统。这些程序都是本人写的，单片机用的是TI的msp430f247,这些程序都经过精心调试，并都已调试成功。希望这些程序能给需要的朋友一定的帮助。头文件【】：#define PAR1_H 0x00send_data('5');elseif(pow_10>=1

2、00)send_data(0x30+p2);send_data(0x30+p1);send_data('.');send_data(0x30+p0);send_data('d');send_data('B');send_data('m');send_data(0x20);send_data('5');elseif(pow_10>=100)send_data(0x30+p2);send_data(0x30+p1);send_data('.');send_data(0x30+p0);send_da

3、ta('d');send_data('B');send_data('m');send_data(0x20);set_xy(0,4);send_data(0xb2); /send_data(0xbd);send_data(0xbd); /send_data(0xf8);send_data(0xa3); /send_data(0xba);set_xy(7,2);send_data(0x11);set_xy(3,2);#pragma vector=PORT1_VECTOR _interrupt void key_int(void)if(!(P1IFG

4、& BIT7)P1IFG = 0;return;ap=0;P1IFG = 0;key_press = 1;#pragma vector = USCIAB0TX_VECTOR_interrupt void I2C_RX(void)if(IFG2 & UCB0RXIFG)key_code = UCB0RXBUF; / 接收中断#pragma vector=TIMERA0_VECTOR _interrupt void Timer_A (void)if(M=3)if(ap)P3OUT &= BIT0;/ Toggleap=0;send_byte(OSKI_2,0X00);sen

5、d_byte(OSKI_1,0X00);elseP3OUT |= BIT0;ap=1;send_byte(OSKI_2,0XFF);send_byte(OSKI_1,0X0F);if(M=4)if(ap)ctr_out&=FBH;ap=0;elsectr_out|=FBH;ap=1;#pragma vector=ADC12_VECTOR _interrupt void adc12()if(M=1)samp=ADC12MEM0;dc=(1-A)*0XFFF/(1+A);ac=2*A*samp/(1+A);ATW=dc+ac;send_byte(OSKI_2,ATW/0x100);send

6、_byte(OSKI_1,ATW%0x100);else if(M=2)samp=ADC12MEM0;if(samp>0x7ff)am=samp-0x7ff;per=am*0x10000/0x7ff; /per-long int;scal=0x10000;&&while(pp3>0x0f && per>=0x600)per/=0x10;scal/=0x10;while(pp3<0x10 per>=0x1000)per/=0x10;scal/=0x10;MPY=pp1;OP2=per;_NOP();_NOP();spp1=RESLO;

7、c=RESHI;MPY=pp2;OP2=per;_NOP();_NOP();spp2=RESLO;spp2=spp2+c;c=RESHI;MPY=pp3;OP2=per;_NOP();_NOP();spp3=RESLO;spp3=spp3+c;switch(scal)case 0x10000:spp1=spp2;spp2=spp3;spp3=0x0000;break;case 0x1000:spp1=spp1/0x1000+(spp2%0x1000)*0x10;spp2=spp2/0x1000 +(spp3%0x1000)*0x10;spp3=spp3/0x1000;break;case 0x

8、100:spp1=spp1/0x100+(spp2%0x100)*0x100;spp2=spp2/0x100+(spp3%0x100)*0x100;spp3=spp3/0x100;break;case0x10:spp1=spp1/0x10+(spp2%0x10)*0x1000;spp2=spp2/0x10+(spp3%0x10)*0x1000;spp3=spp3/0x10;send_byte(FTW1_1,ftw_1+spp1%0x100);send_byte(FTW1_2,ftw_2+spp1/0x100);send_byte(FTW1_3,ftw_3+spp2%0x100);send_by

9、te(FTW1_4,ftw_4+spp2/0x100);send_byte(FTW1_5,ftw_5+spp3%0x100);send_byte(FTW1_6,ftw_6+spp3/0x100);elseam=0x7ff-samp;per=am*0x10000/0x7ff; /per-long int;scal=0x10000;&&while(pp3>0x0f && per>=0x600)per/=0x10;scal/=0x10;while(pp3<0x10 per>=0x1000)per/=0x10;scal/=0x10;MPY=pp1

10、;OP2=per;_NOP();_NOP();spp1=RESLO;c=RESHI;MPY=pp2;OP2=per;_NOP();_NOP();spp2=RESLO;spp2=spp2+c;c=RESHI;MPY=pp3;OP2=per;_NOP();_NOP();spp3=RESLO;spp3=spp3+c;switch(scal)case 0x10000:spp1=spp2;spp2=spp3;spp3=0;break;case 0x1000:spp1=spp1/0x1000+(spp2%0x1000)*0x10;spp2=spp2/0x1000+(spp3%0x1000)*0x10;sp

11、p3=spp3/0x1000;break;case 0x100:spp1=spp1/0x100+(spp2%0x100)*0x100;spp2=spp2/0x100+(s pp3%0x100)*0x100;spp3=spp3/0x100;break;case 0x10:spp1=spp1/0x10+(spp2%0x10)*0x1000;spp2=spp2/0x10+(spp3 %0x10)*0x1000;spp3=spp3/0x10;ftw11=0x100+ftw_1-spp1%0x100;ftw12=0x100+ftw_2-(0x01-ftw11/0x100)-spp1/0x100;ftw1

12、3=0x100+ftw_3-(0x01-ftw12/0x100)-spp2%0x100;ftw14=0x100+ftw_4-(0x01-ftw13/0x100)-spp2/0x100;ftw15=0x100+ftw_5-(0x01-ftw14/0x100)-spp3%0x100;ftw16=ftw_6-(0x01-ftw15/0x100)-spp3/0x100;send_byte(FTW1_1,(uchar)ftw11);send_byte(FTW1_2,(uchar)ftw12);send_byte(FTW1_3,(uchar)ftw13);send_byte(FTW1_4,(uchar)f

13、tw14);send_byte(FTW1_5,(uchar)ftw15);send_byte(FTW1_6,(uchar)ftw16);ADC12CTL0 &= ENC;/* 发送 1 字节数据 */ void send_byte(uchar add,uchar data)data_dir=0xff;ctr_out|=WR;add_out=add;/送地址_NOP();ctr_out&=WR;/拉低 WRdata_out=data;/送数据_NOP();ctr_out|=WR;/拉高 WRif(fclk)ctr_out|=UDCLK;ctr_out&=UDCLK;els

14、e delayus(5);fclk=1;/*/ /* 读取一个字节的数据 */ uchar read_byte(uchar add)uchar dat;data_dir=0x00;ctr_out|=RD;add_out=add;ctr_out&=RD;_NOP();dat=data_in;ctr_out|=RD;return dat;/*/ void send_command(unsigned char command)Data_dir = 0x00;RS_0;RW_1;E_1;while (Data_in & 0x80);Data_dir = 0xFF;E_0;RS_0;RW

15、_0;Data_out = command;E_1;_NOP();E_0;void send_data(unsigned char data)Data_dir = 0x00;RS_0;RW_1;E_1;while (Data_in & 0x80);Data_dir = 0xFF;E_0;RS_1;RW_0;Data_out = data;E_1;_NOP();E_0;/ lcd_cou nt 八二 0x01;/ if(lcd_count=1)lcd_con1con+=data;/ else lcd_x+;/* */ / 设置显示位置 xpos(116),tpos(14)*/ void

16、set_xy(unsigned char xpos,unsigned char ypos) switch(ypos) case 1: send_command(0X80|xpos);break;case 2: send_command(0X90|xpos);break;case 3: send_command(0X88|xpos);break;case 4: send_command(0X98|xpos);break;default:break;*/ / 在指定位置显示字符串/* */ void print(unsigned char x,unsigned char y,unsigned ch

17、ar* str) unsigned char lcd_temp;set_xy(x,y);lcd_temp=*str;while(lcd_temp != 0x00) send_data(lcd_temp);lcd_temp=*(+str);*写字符串 */ 写字符串子程序/xpos1取07共八列，ypos1取1 4共四行。/*/ void printstr(unsigned char xpos,unsigned char ypos,unsigned char str,unsigned char k) unsigned char n;switch (ypos) case 1: xpos |= 0x

18、80;break;/第一行case 2: xpos |= 0x90;break;/第二行case 3: xpos |= 0x88;break;/第三行case 4: xpos |= 0x98;break;/第四行default: break;send_command(xpos);/此处的Xpos已转换为LCM的显示寄存器实际地址for(n=0;n < k;n+)send_data(strn); /显示汉字时注意码值，连续两个码表示一个汉字*清屏 */ 清屏/*/ void clr_lcd(void) send_command(0x01);/send_command(0x34);/send_command(0x30);/* 数字退格键 */ void backspace()if(lcd_count=0)if(lcd_x!=0)lcd_x-;set_xy(lcd_x,lcd_y);lcd_count=0;send_data(lcd_con1-con);send_data(0x20);lcd_x-;set_xy(lcd_x,lcd_y);lcd_count=0;send_data(lcd_con1-con);elselcd_x=7;lcd_y-;set_xy(lcd_x,lcd_y);