sbit rd=P3^2
sbit k0=P1^0
sbit k1=P1^1
sbit k2=P1^2
sbit k3=P1^3
sbit k4=P1^4
unsigned char flag/判扮/当flag为0、1、2、3、4时分别掘让灶产生正弦波、方波、三角波、梯形波、锯齿波
unsigned char const code sin_code[256]={
0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,0x98,0x9c,0x9f,0xa2,
0xa5,0xa8,0xab,0xae,0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,
0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,0xda,0xdc,0xde,0xe0,
0xe2,0xe4,0xe6,0xe8,0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf4,
0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,0xfd,0xfe,0xfe,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,
0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf3,0xf2,
0xf0,0xef,0xed,0xec,0xea,0xe8,0xe6,0xe4,0xe3,0xe1,0xde,0xdc,
0xda,0xd8,0xd6,0xd3,0xd1,0xce,0xcc,0xc9,0xc7,0xc4,0xc1,0xbf,
0xbc,0xb9,0xb6,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,
0x99,0x96,0x92,0x8f,0x8c,0x89,0x86,0x83,0x80,0x7d,0x79,0x76,
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,
0x15,0x14,0x12,0x10,0xf,0xd,0xc,0xb,0x9,0x8,0x7,0x6,0x5,0x4,
0x3,0x3,0x2,0x1,0x1,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x1,0x1,0x2,0x3,0x3,0x4,0x5,0x6,0x7,0x8,0x9,0xa,0xc,0xd,
0xe,0x10,0x12,0x13,0x15,0x17,0x18,0x1a,0x1c,0x1e,0x20,0x23,
0x25,0x27,0x29,0x2c,0x2e,0x30,0x33,0x35,0x38,0x3b,0x3d,0x40,
0x43,0x46,0x48,0x4b,0x4e,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,
0x66,0x69,0x6c,0x6f,0x73,0x76,0x79,0x7c
}//用于生成正弦
unsigned char kscan() //键盘扫描函数
{
unsigned char kscannum,t
P1=0xff
t=P1
if(~(t&0xff))
{
if(k0==0)
{
kscannum=1
}
else if(k1==0)
{
kscannum=2
}
else if(k2==0)
{
kscannum=3
}
else if(k3==0)
{
kscannum=4
}
else if(k4==0)
{
kscannum=5
}
else
{
kscannum=0
}
return kscannum
}
}
void init_DA0832()//DA0832初始化
{
rd=0
wr=0
}
void fangbo()//产生方波函数
{
EA=1//开总中断
ET0=1//计时器T0工作
TMOD=1
TR0=1/滑腔/开启T0
TH0=0xff//装入初值
TL0=0x83
}
void sin()//产生正弦波函数
{
unsigned inti
do{
P2=sin_code[i]
i=i+1
}while(i<256)
}
void juchibo()//产生锯齿波函数
{
P2=0x00
do{
P2=P2+1
}while(P2<=0xff)
}
void sanjiaobo()//产生三角波函数
{
P2=0x00
do{
P2=P2+1
}while(P2<0xff)
P2=0xff
do{
P2=P2-1
}while(P2>0x00)
P2=0x00
}
void tixingbo()//产生梯形波函数
{
unsigned char i
P2=0x00
do{
P2=P2+1
}while(P2<0xff)
P2=0xff
for(i=255i>0i--)
{
P2=0xff
}
do{
P2=P2-1
}while(P2>0x00)
P2=0x00
}
void timer0(void) interrupt 1//中断函数
{
P2=~P2//取反
TH0=0xff//重新装入初值
TL0=0x83
TR0=1
}
/*主函数*/
void main()
{
init_DA0832()//初始化
do
{
flag=kscan()
}while(!flag)//等待按键按下
while(1)
{
switch(flag)
{
case 1:
do{
flag=kscan()
sin()
}while(flag==1)//产生正弦波
break
case 2:
fangbo()
do{
flag=kscan()
}while(flag==2)//产生方波
TR0=0
break
case 3:
do{
flag=kscan()
sanjiaobo()
}while(flag==3)//产生三角波
break
case 4:
do{
flag=kscan()
tixingbo()
}while(flag==4)//产生梯形波
break
case 5:
do{
flag=kscan()
juchibo()
}while(flag==5)//产生锯齿波
break
default:
flag=kscan()
break
}
}
}
第一银返李:div_7513count在分频的时候我看不出来它是几位,不知道你的时钟到底用的是多世局少。技术手册最低要求10M的配置时钟,太高不稳定。第锋迟二:时而有输出时而没有,肯定是你的配置时序有问题。可以肯定不没有做过功能仿真。
第三:一般DAC的配置需求时序也不严格,只是你的配置时序太乱了!
朋友,这是你下载的“软件”和电脑中的“内存”有冲突了,(答案原创,严禁其他网友复制)我给你8种方法调试,快试试吧:
1.下载个“360急救箱”,原名:“360顽固木马专杀”,急救余拿系统!
2.电脑里有木马或病毒干扰,下载“360安全卫士”和“360杀毒双引擎版”罩枣,建议“全盘扫描”病毒和木马,修补电脑上的漏洞!
3.你下载的“播放器”,或“聊天软件”,或“IE浏览器”,或“游戏”的程序不稳定,或者“版本太旧”!建议卸掉,下载新的,或将其升级为“最新版本”!
4.就是你安装了两款或两款以上的同类软件(如:两款播放器,两款qq,或多款浏览物毁拆器,多款杀毒软件,多款网游等等)!它们在一起不“兼容”,卸掉“多余”的那一款!
5.你在电脑左下角“开始”菜单里找到“强力卸载电脑上的软件”,找到多余的那款卸掉! 卸完了再“强力清扫”(看准了再卸,别把有用的卸了)!
6.去网上下载一个“read修复工具”修复一下试试!
7.重启电脑,开机后按“F8”,回车,回车,进到“安全模式”里找到“最后一次正确设置”,按下去试试,看看效果如何!
8.实在不行就“还原系统”或“重装系统”!
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