EEPW论坛

//unsigned char bdata status_byte_0;//状态位
//unsigned int xdata * data px;
unsigned int Cal_1;
unsigned char Data_1[18]={0};//接收存放

sbit LED30 = P3^0;  //系统运行周期LED显示

sbit Output_32=P3^2; //超声波驱动脉冲输出
sbit Output_33=P3^3; //超声波驱动脉冲输出

void SYSCLK_Init (void)
{

 /*  int i;    // delay counter
   OSCXCN = 0x67;  // start external oscillator with 11.0592MHz crystal
   for (i=0; i < 256; i++){;};  // Wait for osc. to start up
   while (!(OSCXCN & 0x80));  // Wait for crystal osc. to settle

 OSCICN = 0x88;//Enable missing clock detector and select external oscillator as SYSCLK source
*/
 OSCICN = 0x97;//Enable missing clock detector and select internal 16MHz oscillator as SYSCLK source

}
void PORT_Init (void)
{
    XBR0 = 0x6E; //Enable UART0 and UART1
 XBR1 = 0x17;
 XBR2 = 0x44;

// XBR0 = 0x07; //Enable UART0 and UART1
// XBR1 = 0x02;
// XBR2 = 0x44; //Enable crossbar and weak -up
// XBR2    =  0xC4; //Enable crossbar but disable weak pull-ups

//   EMI0CF  = 0x27;
//   EMI0TC  = 0x21;
 P0MDOUT = 0x00; 
 P1MDOUT = 0x00;
// P2MDOUT = 0x00; 
//P3MDOUT = 0x0C;
}

void UART01_Init (void)
{ SCON0  = 0x50;  // SCON0: mode 1, 8-bit, No Parity Bit, 1 bit start and 1 bit stop
 
 TMOD   = 0x22; // timer 1: mode 2, 8-bit reload
     // timer 0: mode 2, 8-bit reload
 TL1    =0x9e;
 TH1    =0x8e; //99_A3=9600 Baud rate

//CKCON=0x08;//Timer0_使用系统时钟，不1/12分频
//CKCON=0x00;//Timer0_使用系统时钟，1/12分频
 CKCON = 0x18; //Timer0_使用系统时钟_Not_1/12分频_Timer1 uses SYSCLK as time base
 PCON  = 0x80; //SMOD0 = 1_UART0波特率加倍

 TR1 = 0;  // Start Timer1 用于串行通讯Baud rate控制
 
}
/*
void SPI0_Init (void)
{
   SPI0CFG = 0x07; // data sampled on 1st SCK rising edge 8-bit data words
   SPI0CFG|=0xC0; // CKPOL =1;
   SPI0CN = 0x03; // Master mode; SPI enabled; flags cleared
   SPI0CKR = SYSCLK/2/8000000-1; // SPI clock <= 8MHz (limited by EEPROM spec.)
}
*/
/*
void Delay1us(unsigned char Count_us)
{unsigned char t1;
 while (Count_us)
 {
 for(t1=1;t1<5;t1++){;}
   Count_us--;
 }
}

void Delay1ms(unsigned char Count_ms)
{ while (Count_ms)
 {
 Delay1us(200);
 Delay1us(200);
 Delay1us(200);
 Delay1us(200);
 Count_ms--;
 }
}
*/

void Send_Addre_32()
{
   ES0=0;
   SBUF0='@';while(!TI0);TI0=0;//头

  ACC = Data_1[0];//拆成高4位
 ACC &= 0xF0;
 ACC = ACC/16;
SBUF0=ACC;while(!TI0);TI0=0;

 ACC = Data_1[0];//拆成低4位
 ACC = ACC & 0x0F;
SBUF0=ACC;while(!TI0);TI0=0;
 
 ACC = Data_1[1];//拆成高4位
 ACC &= 0xF0;
 ACC = ACC/16;
SBUF0=ACC;while(!TI0);TI0=0;

 ACC = Data_1[1];//拆成低4位
 ACC = ACC & 0x0F;
SBUF0=ACC;while(!TI0);TI0=0;    
   
   SBUF0='A';while(!TI0);TI0=0;//尾
    ES0=1;
}

//===main()===
void main (void)
{
 unsigned char M1,M2;
 unsigned int i_1,i_2;

 WDTCN = 0xde; //禁止WDT_disable watchdog timer
 WDTCN = 0xad; //关看门狗
//===
// WDTCN = 0xFF; //锁定WDT_一直使用看门狗
// WDTCN = 0xA5; //使能/复位WDT_喂狗
// WDTCN = 0x07; //设置最大WDT超时极限值
//===
 
 SYSCLK_Init (); //初始化系统时钟
 UART01_Init (); //初始化串口
 PORT_Init (); //初始化IO口
    T2CON = 0x01; //初始化Timer2
 
TH0 =0x46;//Timer0_实现方波发生器_40.2kHz
TL0 =0x46;
TH2 =0x00;
TL2 =0x00;
ET0 = 1;
ET2 = 1;
EX0 = 1;
EA = 1;

//Waiting_1
for(M1=0;M1<9;M1++)
{
LED30=~LED30;
for(i_1=0;i_1<300;i_1++)
{for(i_2=0;i_2<300;i_2++)
{;}
}
}

while(1)
{
M2++;
if(M2>Step_2){M2=0;LED30=~LED30;}

Send_Addre_32();
 
Output_32=0;
Output_33=1;

ET2 = 1;//Timer2_溢出中断允许
TR2 = 1;//Timer2_计时开始

TR0 = 1;//发出超声波

for(i_1=0;i_1<Step_1;i_1++){;}

TR0 = 0;//停止超声波
Output_32=0;
Output_33=1;

for(M1=0;M1<Step_2;M1++)
{
for(i_1=0;i_1<Step_1;i_1++){;}//延时
}

EX0=1; //外中断0允许接收回波

Cal_1=Data_1[0]*256+Data_1[1];

for(i_1=0;i_1<Step_2;i_1++)
{
for(M1=0;M1<Step_2;M1++)
{
for(i_2=0;i_2<Step_3;i_2++){;}//延时
}
 if(Cal_1>Cal_Set){LED30=~LED30;}//如果油位过低_快闪
}

}//while(1)

}//main()

void T2_ISR(void) interrupt 5
{
ET2 = 0;//Timer2_溢出中断禁止
TR2 = 0;//Timer2_计时停止
TF2=0;//溢出中断标志
TH2=0;
TL2=0;
}

void T0_ISR(void) interrupt 1
{
//ET0 = 0;
//TR0 = 0;
Output_32=~Output_32;
Output_33=~Output_33;
//ET0 = 1;
//TR0 = 1;
}
/*
void INIT0_ISR(void) interrupt 0
{
  EX0=0;
  ET2 = 0;
  TR2 = 0;//Timer2_计时停止
 
  *px = TH2;
    px++;
  *px = TL2;
   px++;
   
// ACC = TH2;
// B = TL2;
 TH2=0;
 TL2=0;

}
*/
void INIT0_ISR(void) interrupt 0
{
 EX0=0;
 ET2 = 0;
 TR2 = 0;//Timer2_计时停止
 
 Data_1[0] = TH2;//高4位
 Data_1[1] = TL2;//低4位
 
 TH2=0;
 TL2=0;
}