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#include<STC89XC2.h>
unsigned char code SEGtable[]=
{
0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0x00
}; sbit sw7 = P0 ^ 7;
sbit sw6 = P0 ^ 6;
sbit sw5 = P0 ^ 5;
sbit sw4 = P0 ^ 4;
sbit sw3 = P0 ^ 3;
sbit sw2 = P0 ^ 2;
sbit sw1 = P0 ^ 1;
sbit sw0 = P0 ^ 0;
sbit FMQ = P1 ^ 7;
bit alarmflg = 0;
unsigned RxByte = 0x00;
unsigned char counter = 0;
unsigned char Scounter,Lcounter; //分別存放自己的水位狀態和遠方的水位狀態 و
unsigned char FMcounter = 0x02; //報警狀態參數
void DelayFM(unsigned int x)
{
unsigned char t;
while(x--)
{
for(t=0;t<120;t++);
}
}
//蜂鳴器驅動函數，參數為發聲聲調
void FM(unsigned char x)
{
unsigned char i;
for(i=0;i<100;i++)
{
FMQ =～FMQ;
DelayFM(x);
}
FMQ = 0;
} Void Delayms(unsigned int MS) //延時 ms 函數
{
unsigned int i,j;
for(i=0;i＜MS;i++)
for(j=0;j＜1141;j++);
}
void InitUART(void)
{
TMOD = 0x20; //9600b/s
SCON = 0x50;
TH1 = 0xFD;
TL1 = TH1;
PCON = 0x00;
EA = 1;
ES = 1;
TR1 = 1;
} void Send(unsigned char x) { SBUF = x; while(TI == 0); TI = 0; } void Serial(void)interrupt 4 using 1 { unsigned char RxByte; if(RI == 1) { RxByte = SBUF; RI = 0; P2 = RxByte; switch(RxByte) { case 0x00:Lcounter = 0;break; case 0xf9:Lcounter = 1;break; case 0xa4:Lcounter = 2;break; case 0xb0:Lcounter = 3;break; case 0x99:Lcounter = 4;break; case 0x92:Lcounter = 5;break; case 0x82:Lcounter = 6;break; case 0xF8:Lcounter = 7;break; case 0x80:Lcounter = 8;break; default:{}; } if(Scounter＞Lcounter) { if((Scounter - Lcounter) ＞ 2) //如果超過2% { FMcounter = Scounter - Lcounter; alarmflg = 1; //報警標志位 } eles { alarmflg = 0; } } eles { alarmflg = 0; //清除 } } } main(void) { InitUART(); while(1) { Delayms(100); P0 = 0xFF; counter = 0; counter = counter + (unsigned char)sw7; counter = counter + (unsigned char)sw6; counter = counter + (unsigned char)sw5; counter = counter + (unsigned char)sw4; counter = counter + (unsigned char)sw3; counter = counter + (unsigned char)sw2; counter = counter + (unsigned char)sw1; counter = counter + (unsigned char)sw0; //計算當前的負載 Scounter = counter; Send(SEGtable[counter]); if(alamflg == 1) { FM(FMcounter); } } }
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