DA转换实验Word文档格式.docx

DA转换实验Word文档格式.docx

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#defineuintunsignedint

#defineucharunsignedchar

#defineDAC0832XBYTE[0xfffe]

sbitk0=P1^0;

sbitk1=P1^1;

sbitk2=P1^2;

sbitk3=P1^3;

sbitk4=P1^4;

sbitk5=P1^5;

unsignedcharmm=0;

unsignedcharflag=0;

unsignedcharx,y;

ucharcodeSETTAB[]=

{0x7F,0x82,0x85,0x88,0x8B,0x8F,0x92,0x95,0x98,0x9B,0x9E,0xA1,0xA4,0xA7,0xAA,0xAD

0xB0,0xB3,0xB6,0xB8,0xBB,0xBE,0xC1,0xC3,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7,0xD9,0xDB,0xDD,0xE0,0xE2,0xE4,0xE5,0xE7,0xE9,0xEB,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFB,0xFC,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFC,0xFB,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEB,0xE9,0xE7,0xE5,0xE4,0xE2,0xE0,0xDD,0xDB,0xD9,0xD7,0xD5,0xD2,0xD0,0xCD,0xCB,0xC8,0xC6,0xC3,0xC1,0xBE,0xBB,0xB8,0xB6,0xB3,0xB0,0xAD,0xAA,0xA7,0xA4,0xA1,0x9E,0x9B,0x98,0x95,0x92,0x8F,0x8B,0x88,0x85,0x82,0x7F,0x7C,0x79,0x76,0x73,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x54,0x51,0x4E,0x4B,0x48,0x46,0x43,0x40,0x3D,0x3B,0x38,0x36,0x33,0x31,0x2E,0x2C,0x29,0x27,0x25,0x23,0x21,0x1E,0x1C,0x1A,0x19,0x17,0x15,0x13,0x12,0x10,0x0F,0x0D,0x0C,0x0A,0x09,0x08,0x07,0x06,0x5,0x04,0x03,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0C,0x0D,0x0F,0x10,0x12,0x13,0x15,0x17,0x19,0x1A,0x1C,0x1E,0x21,0x23,0x25,0x27,0x29,0x2C,0x2E,0x31,0x33,0x36,0x38,0x3B,0x3D,0x40,0x43,0x46,0x48,0x4B,0x4E,0x51,0x54,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x73,0x76,0x79,0x7C};

voiddelayMS（uintms）

{

uchari;

while（ms--）

{

for（i=0;

i<

120;

i++）;

}

}

Voidfangbo（）

DAC0832=y;

x++;

if（flag==1）

{y=0xff;

if（x==128）

flag=0;

y=0x00;

}

else

{y=0x00;

if（x==0）

{

flag=1;

y=0xff;

}

voidjuchibo（）

{

DAC0832=y;

y+=1;

voidsanjiaobo（）

if（flag==0）

{

y+=2;

{

flag=1;

y-=2;

y-=2;

if（x==0）

y=0;

voidsin（）

DAC0832=SETTAB[y];

y++;

}

voidtixingbo（）

unsignedinti,j;

=128;

i++）

{

DAC0832=i;

}

for（j=0;

j<

=i;

j++）

for（i=128;

i>

0;

i--）

for（j=0;

}

voidguanbo（）

ucharj;

DAC0832=j;

j=0xff;

voidread_key（）

if（k0==0）

{delayMS（10）;

if（k0==0）

{mm=1;

while（k0==0）;

}

elseif（k1==0）

if（k1==0）

{mm=2;

while（k1==0）;

elseif（k2==0）

if（k2==0）

{mm=3;

while（k2==0）;

elseif（k3==0）

{delayMS（10）;

if（k3==0）;

{mm=4;

while（k3==0）;

elseif（k4==0）

if（k4==0）;

{mm=5;

while（k4==0）;

elseif（k5==0）

if（k5==0）;

{mm=6;

while（k5==0）;

voidmain（）

{

TMOD=0x02;

TH0=156;

TL0=156;

TR0=1;

ET0=1;

EA=1;

mm=0;

while

（1）

{read_key（）;

voidt0（）interrupt1using2

{switch（mm）

{case1:

fangbo（）;

break;

case2:

juchibo（）;

case3:

sanjiaobo（）;

case4:

sin（）;

case5:

tixingbo（）;

case6:

guanbo（）;

default:

break;

}

程序流程图：

五、实验结果

1方波

2锯齿波

3三角波

4正弦波

5梯形波