51单片机波形发生器

发布网友发布时间：2022-07-12 20:34

共1个回答

热心网友时间：2023-10-20 03:31

这个我做过比较接近（没有梯形波）开关低电平有效灯高电平有效#include<reg51.h>
#define d P0
sbit cs=P2^7;
sbit wr=P3^6;
sbit sw0=P1^0;
sbit sw1=P1^1;
sbit sw2=P1^2;
sbit sw3=P1^3;
sbit led0=P1^4;
sbit led1=P1^5;
sbit led2=P1^6;
sbit led3=P1^7;
char code tsin[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,0xFE,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,0xA8,0xA5,0xA2,0x9F,0x9C,0x99,
0x96,0x93,0x90,0x8D,0x89,0x86,0x83,0x80,
0x80,0x7C,0x79,0x78,0x72,0x6F,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,
0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,
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,0x40,0x43,0x45,0x48,0x4C,0x4E,
0x51,0x55,0x57,0x5A,0x5D,0x60,0x63,0x66,
0x69,0x6C,0x6F,0x72,0x76,0x79,0x7C,0x80,
};
void delay(unsigned char c)
{
while(c--);
}
void lsin()
{
unsigned char i;
for(i=0;i<250;i++)
d=tsin[i];
}
void sanjiao()
{
unsigned char i;
for(i=0;i<255;i++)
d=i;
for(i=255;i>0;i--)
d=i;
}
void juchi()
{
unsigned char i;
for(i=0;i<255;i++)
d=i;
}
void fang()
{
unsigned char i;
for(i=0;i<255;i++)
d=0x00;
for(i=0;i<255;i++)
d=0xff;
}
main()
{
while(1)
{
wr=0;
cs=0;
if(sw0==0)
{
sanjiao();
led0=1;
}
if(sw1==0)
{
juchi();
led1=1;
}
if(sw2==0)
{
fang();
led2=1;
}
if(sw3==0)
{
lsin();
led3=1;
}
}
}