锯齿波发生器代码

『壹』 如何运用单片机原理制作智能信号发生器，要求产生方波、矩形波、三角波、锯齿波和正弦波。

#include<reg51.h>

#include<absacc.h>

#include<MAX72191.h>

#defineDAC XBYTE[0x7fff] //P2.7接CS

sbitkey0 = P3^2;// 增减切换键

sbitkey1 = P3^3;//个位,十位，百位，千位的控制切换

sbitkey2 = P3^4;// 调整位

sbitkey3 = P3^5;// 波形选择正弦、三角、矩竖槐形厅禅波，锯齿波

unsignedchar i,j;

unsignedint counter,step,flag;

typedefunsigned int uint;

//定时器0初始化

voidInit_Timer0(void)

{

TMOD = (TMOD &扮纤尘 0XF0) | 0X01;//设置工作方式和定时初始值

TH0 = 0xff;

TL0 = 0x00;

TR0 =1; //启动定时器

ET0 =1;

}

//定义输出波形的代码

unsignedchar code type[4][256]={

{ //正弦波代码

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x1, 0x1, 0x2, 0x3, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8,

0x9, 0xb,0xc, 0xd, 0xf, 0x10,0x12,0x13,0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,

0x25,0x27,0x2a,0x2c,0x2e,0x31,0x33,0x36,0x39,0x3b,0x3e,0x41,0x43,0x46,0x49,0x4c,

0x4f,0x52,0x55,0x58,0x5b,0x5e,0x61,0x64,0x67,0x6a,0x6d,0x70,0x73,0x76,0x7a,0x7d,

0x80,0x83,0x86,0x89,0x8c,0x8f,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,

0xb1,0xb4,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,

0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,0xea,0xeb,0xed,0xef,0xf0,0xf1,0xf3,0xf4,

0xf5,0xf6,0xf8,0xf9,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfd,0xfe,0xfe,0xfe,0xfe,0xfe,

0xfe,0xfe,0xfe,0xfe,0xfe,0xfd,0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf9,0xf8,0xf6,0xf5,

0xf4,0xf3,0xf1,0xf0,0xef,0xed,0xeb,0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,0xda,

0xd8,0xd5,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,0xbc,0xb9,0xb6,0xb4,0xb1,

0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93,0x8f,0x8c,0x89,0x86,0x83,0x80,

0x7d,0x7a,0x76,0x73,0x70,0x6d,0x6a,0x67,0x64,0x61,0x5e,0x5b,0x58,0x55,0x52,0x4f,

0x4c,0x49,0x46,0x43,0x41,0x3e,0x3b,0x39,0x36,0x33,0x31,0x2e,0x2c,0x2a,0x27,0x25,

0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,0x15,0x13,0x12,0x10,0xf,0xd, 0xc, 0xb, 0x9,

0x8,0x7, 0x6, 0x5, 0x4, 0x3, 0x3, 0x2, 0x1, 0x1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00

},

{ //三角波代码

0x2,0x4, 0x6, 0x8, 0xa, 0xc, 0xe, 0x10,0x12,0x14, 0x16, 0x18, 0x1a,0x1c, 0x1e, 0x20,

0x22,0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e, 0x30,0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e, 0x40,

0x42,0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50,0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60,

0x62,0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70,0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e, 0x80,

0x82,0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90,0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e, 0xa0,

0xa2,0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0,0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc,0xbe, 0xc0,

0xc2,0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0,0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc,0xde, 0xe0,

0xe2,0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0,0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc,0xfe, 0xff,

0xfe,0xfc, 0xfa, 0xf8, 0xf6, 0xf4, 0xf2, 0xf0,0xee, 0xec, 0xea, 0xe8, 0xe6, 0xe4,0xe2, 0xe0,

0xde,0xdc, 0xda, 0xd8, 0xd6, 0xd4, 0xd2, 0xd0,0xce, 0xcc, 0xca, 0xc8, 0xc6, 0xc4,0xc2, 0xc0,

0xbe,0xbc, 0xba, 0xb8, 0xb6, 0xb4, 0xb2, 0xb0,0xae, 0xac, 0xaa, 0xa8, 0xa6, 0xa4,0xa2, 0xa0,

0x9e, 0x9c, 0x9a, 0x98, 0x96, 0x94, 0x92, 0x90,0x8e, 0x8c, 0x8a, 0x88, 0x86, 0x84, 0x82, 0x80,

0x7e, 0x7c, 0x7a, 0x78, 0x76, 0x74, 0x72, 0x70,0x6e, 0x6c, 0x6a, 0x68, 0x66, 0x64, 0x62, 0x60,

0x5e, 0x5c, 0x5a, 0x58, 0x56, 0x54, 0x52, 0x50,0x4e, 0x4c, 0x4a, 0x48, 0x46, 0x44, 0x42, 0x40,

0x3e, 0x3c, 0x3a, 0x38, 0x36, 0x34, 0x32, 0x30,0x2e, 0x2c, 0x2a, 0x28, 0x26, 0x24, 0x22, 0x20,

0x1e, 0x1c, 0x1a, 0x18, 0x16, 0x14, 0x12, 0x10,0xe, 0xc,0xa, 0x8, 0x6,0x4, 0x2, 0x00

},

{// 矩形脉冲波代码

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff, 0xff, 0xff, 0xff, 0xff,0xff, 0xff,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00,

},

{//锯齿波代码

0x00,0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,0x08,0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,

0x10,0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,0x18,0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,

0x20,0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,0x28,0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,

0x30,0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,0x38,0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,

0x40,0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,0x48,0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,

0x50,0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,0x58,0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,

0x60,0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,0x68,0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,

0x70,0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,0x78,0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,

0x80,0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,0x88,0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,

0x90,0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,0x98,0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,

0xa0,0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,0xa8,0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,

0xb0,0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,0xb8,0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,

0xc0,0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,0xc8,0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,

0xd0,0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,0xd8,0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,

0xe0,0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,0xe8,0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,

0xf0,0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,0xf8,0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff}

};

//显示子函数

Disp7219(unsignedlong dat)

{

unsigned char i;

unsigned char led[8];

led[7]=dat%10;

led[6]=dat/10%10;

led[5]=dat/100%10;

led[4]=dat/1000%10;

led[3]=dat/10000%10;

led[2]=dat/100000%10;

led[1]=dat/1000000%10;

led[0]=dat/10000000%10;

for(i=0;i<8;i++)

{

max_7219(i+1, led[i]);

}

}

//延时约1m秒

voiddelay_ms(uint n)

{

uchar j;

while(n--)

for(j=0;j<120;j++);

}

//主函数

main()

{

unsigned int f,n,j;

delay_ms(500);

Init_Max7219();//初始化7219

Disp7219(000);

Init_Timer0();

step=18;

EA = 1;

while(1)

{

if(key0 == 0) n=n+1;

if(n==2)n=0;

if(key1==0) j=j+1;

if(j==4) j=0;

if(n==0 && j == 0 &&key2 == 0) if(step<180) step+=18; //个位增

if(n==1 && j == 0 &&key2 == 0) if(step>18) step-=18; //个位减

if(n==0 && j == 1 &&key2 == 0) if(step<1800) step+=180;//十位增

if(n==1 && j == 1 &&key2 == 0) if(step>180) step-=180; //十位减

if(n==0 && j == 2 &&key2 == 0) if(step<18000) step+=1800;//百位增

if(n==1 && j == 2 &&key2 == 0) if(step>1800) step-=1800;//百位减

if(n==0 && j == 3 &&key2 == 0) if(step<54000) step+=18000;//千位增

if(n==1 && j == 3 &&key2 == 0) if(step>18000) step-=18000;//千位减

if(key3==0)flag=flag+1;if(flag==4)flag=0;

while((!key0)||(!key1)||(!key2)||(!key3));

f=step/18;

Disp7219(f);}//显示频率

}

// 定时中断服务

voidTimer0(void) interrupt 1 using 2

{

TH0 = 0xff;

TL0 = 0x00;

counter = counter + step;

DAC=type[flag][(unsignedint)counter>>8];

}

『贰』 基于51单片机的锯齿波发生器，要求能够发生出1HZ，100HZ，1KHZ。

//晶振频率12M,所以定时器脉冲频率为1M=1000000

#define F 12 // 晶振频率

#define ONE_SECOND (F*1000000/12) // 机器周期拆乎频率

#define IT0_Cost 10 // 定时器0中断平均花费时间10us，这是大概数据，自己可以仔旅雀悉细计算，影响不大只是为了提高精度，所以无法不可能输出1KHz锯齿波岁则，最高只能输出大约390Hz

#define SAWF 100 // 输出锯齿波频率,建议输出不高于100Hz

#define oTH0 (65536-ONE_SECOND/SAWF/256 + IT0_Cost) / 256

#define oTL0 (65536-ONE_SECOND/SAWF/256 + IT0_Cost) % 256

void main()

{

TMOD=0X01;

TH0=oTH0 ;

TL0=oTL0;

ET0=1;

TR0=1;

EA=1;

while(1){};

}

void timer0(void) interrupt 1

{

static unsigned char vout,ff;
TH0=oTH0 ;

TL0=oTL0;

P2=vout; // P2接DAC，输出100Hz
vout++;
if(vout==255) vout=0;

/* 注释部分替换上面三行即输出1Hz
ff++;
if(ff == 100)
{
P2=vout; // P2接DAC，输出1Hz
vout++;
if(vout==255) vout=0;
*/
}

*/

}

『叁』 用verilog在fpga上实现： 10k~100khz正弦波，三角波，锯齿波波形发生器(基于d

楼上太犀利了，哈哈
你的第一二三条可以合成一条，直接在旁誉modesim里面写尘者代码，testbench，然后仿真，当然也可以直接用quartus II里面的仿真器仿真，如果信号较少的话也很方便的。
四五六七条可以合成一条，直接在quartus II里面的全编译选项即可
编译完成后直接下载调试派启薯了。
还有既然开发FPGA，肯定要选择芯片的型号，具体的型号要看你有哪种FPGA的实体了，芯片上都有标示的。

『肆』 帮忙用VHDL语言编写信号发生器（三角波，方波，锯齿波），要求用计数器，方波，锯齿波幅值最大为10。

用vhdl编写信号发生器输出三角波，方波，锯齿波
由于用VHDL编写输出的是数字信号，所以要在后面加入D/A转换
实现方式 PLD（或FPGA）+D/A转换
用PLD（或FPGA）产生3种循环变化的数据量（这里用4位 实现幅值10=‘1010）
1 用0-10的循环加法计数 实现锯齿波
2 用0-10-0循环加减计数器 实现三角波
3 用0-10-0循环加减计数实现 方波
Library IEEE；
Use ieee.std_logic_1164.all;
Use ieee.std_logic_unsigned.all;

Entity sig is
Port( clk,reset: in std_logic;
Mod: in std_logic_vector(1 downto 0); --MOD为模式选择
--00输出递增锯齿波 01输出递减锯齿波 --10 输出三角波 11 输出方波
dout: out std_logic_vector(3 downto 0));
End sig;

Architecture one of sig is
Signal count:std_logic_vector(3 downto 0); --count 为计数
Signal addsub:std_logic; -- addsub 为0时 加法计数
Begin -- 为1时 减法计数
cout<= count; -- 将计数值送给输出
Process(clk,reset,mod)
Begin
If reset=’1’ then -- 异步复位
Count<=”0000”;

Elsif clk’event and clk=’1’ then
If count=”1010” then --同步复位
Count<=”0000”;
End if;

Case mod is
When “00” => if count --所得递增锯齿波波形周期为10个时钟周期
count<= count+1;

When “01” => count<= count-1; --所得递减锯齿波形周期为10个时钟周期
When “10” =>if (addsub=’0’) then --所得三角波形周期为20个时钟周期
count<= count+1;
if (count=10) then --加法计数到10
addsub <=’1’ --addsub 为1 开始减法计数
else
addsub<=’0’;
end if;
else
count<=count-1;
if (count<1) then
addsub<=’0’;
else
addsub<=’1’;
end if;
end if;
when “11” =>if (addsub=’0’) then
count<= count+10; --步进为10
if (count=10) then
addsub <=’1’
else
addsub<=’0’;
end if;
else
count<=count-10;
if (count<10) then
addsub<=’0’;
else
addsub<=’1’;
end if; --所得方波周期为4个时钟周期
end if;
When others count<=’0000’;
End case;
End if;
End process;
End one;