悬赏
5
分 芯积分未解决
不知道程序哪出问题了,想要用DS12C887的闹钟功能产生闹钟中断,进入外部中断关闭LED。比如支持最小定时1分钟,但是IRQ就是不产生下降沿,没法进入中断,到底咋回事?大神们帮忙看看啊!
#include
#define uint unsigned int
#define uchar unsigned char
sbit DIM=P2^0;
sbit dscs=P1^1;
sbit dsas=P1^2;
sbit dsrw=P1^3;
sbit dsds=P1^4;
sbit dsirq=P3^3;
uchar tmp,temp,flagding,scale,flag;
uchar Buffer[1]={0x00};
void init();
void init_USART();
uint TQ(uchar n);
void set_time();
void set_alarm(uchar,uchar,uchar);
uchar read_ds(uchar);
void write_ds(uchar,uchar);
void main()
{
scale=100;
init();
init_USART();
DIM=1;
while(1)
{
if(flag==1)
{
scale=TQ(tmp);
flag=0;
}
else
scale=scale;
if(flagding==1)
{
uchar shi,fen;
flagding=0;
shi=(temp&0xf0)>>4;
fen=temp&0x0f;
set_time();
set_alarm(shi,fen,0);
write_ds(0x0B,0x26);
dscs=0;
EX1=1;
}
}
}
void init()
{
TMOD=0X22;
TH0=0xD2; //定时初值设置为50us
TL0=0xD2;
EA=1;
ET0=1;
TR0=1;
}
void init_USART() //串口初始化
{
SCON=0x50; //设置串口通信数据位为8位
TMOD=0x22; //设置定时器1
TH1=0xFD; //设置波特率为9600
TL1=0xFD;
TR1=1;
EA=1;
ES=1;
read_ds(0x0c);
EX1=1; //开外部中断1
IT1=1; //跳沿触发
}
void timer0() interrupt 1 //定时器0产生PWM波,周期5ms
{
static uint t;
t++;
if(t==100)
{
t=0;
DIM=1;
}
if(t<=scale)
DIM=1;
else
DIM=0;
}
void USART() interrupt 4 //串口通信,接收蓝牙信息
{
uchar n;
if(RI)
{
RI=0;
EA=0;
n=SBUF;
if(Buffer[0]!=0x00)
{
temp=n; //定时时间
Buffer[0]=0x00;
EA=1;
flagding=1;
}
else if(n==0x7A) //0x7A为定时信号,下一字符将要接收定时时间
{
Buffer[0]=n;
EA=1;
}
else
{
tmp=n;
EA=1;
flag=1;
}
}
}
unsigned int TQ(uchar n)//将字符转换成数字
{
uint date,shu;
if(n==0x6F) //如果接收字符为'o',开灯
return 100;
else if(n==0x73) //如果接收字符为's',关灯
return 0;
else if(n>=0x00 && n<=0x63) //如果接收的字符在指定的范围内
{
date=n/10;
shu=n%10;
shu=date*10+shu;
return shu;
}
else return scale; //否则保持之前状态
}
void write_ds(uchar add,uchar date) //写时钟芯片
{
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P0=add;
dsas=0;
dsrw=0;
P0=date;
dsrw=1;
dsas=1;
dscs=1;
}
uchar read_ds(uchar add) //读时钟芯片
{
uchar ds_date;
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P0=add;
dsas=0;
dsds=0;
P0=0xff;
ds_date=P0;
dsds=1;
dsas=1;
dscs=1;
return ds_date;
}
void set_time() //设置时间为零点零分零秒,为定时关灯设置时间基准
{
write_ds(4,0);
write_ds(2,0);
write_ds(0,0);
}
void set_alarm(uchar ashi,uchar afen,uchar amiao) //设置关灯时间
{
write_ds(1,amiao);
write_ds(3,afen);
write_ds(5,ashi);
}
void exter() interrupt 2
{
uchar c;
c=read_ds(0x0c);
scale=0;
dscs=1;
EX1=0;
}