51单片机波形发生器程序.pdf
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2022-06-27
01:04:07
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#include<reg51.h>
sbit wr=P3^6; //P3.6 为 DAC0832 输入寄存器的写信号 WR1，低电平有效
sbit cs=P3^0; //P3.0 为 DAC0832 片选信号 CS，低电平有效
unsigned char k,t;
sbit led1=P3^1;
sbit led2=P3^3;
sbit led3=P3^4;
sbit led4=P3^5;
//波形指示灯
//正弦波数据
unsigned char code Table[]={ 0x7F,0x8A,0x96,0xA1,0xAC,0xB6,0xC0,0xCA,
0xD3,0xDB,0xE3,0xE9,0xEF,0xF4,0xF8,0xFB,
0xFD,0xFE,0xFE,0xFD,0xFB,0xF8,0xF4,0xEF,
0xE9,0xE3,0xDB,0xD3,0xCA,0xC0,0xB6,0xAC,
0xA1,0x96,0x8A,0x7F,0x74,0x68,0x5D,0x52,
0x48,0x3E,0x34,0x2B,0x23,0x1B,0x15,0x0F,
0x0A,0x06,0x03,0x01,0x00,0x00,0x01,0x03,
0x06,0x0A,0x0F,0x15,0x1B,0x23,0x2B,0x34,
0x3E,0x48,0x52,0x5D,0x68,0x74};
void Delay(int Time_ms);
void Int0();
void main()
{
unsigned char i;
k=0;
EX0=1;
IT0=1;
EA=1;
cs=0;
while(1)
{
if(k==0) //锯齿波
{
led1=0;led2=1;led3=1;led4=1;
t++;
wr=1;
P0=t;
wr=0;
Delay(1);
}
else if(k==1) //方波
{
led1=1;led2=0;led3=1;led4=1;
wr=1;
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