about receive and transfer program code in 89S51

[JDQQ8051]

hi all, I need use mobile device control my 8051, this 8051 function can be receive and transfer value.

I use bluetooth (HC-05) UART in 8051. this LCD and module on I2c.

sorry so more question, I need to support plz. 

 

question 1:

I make the LED to extra receive, this function can be run. but, I add this function in my 8051 can't be run. I don't know what happen.

(see the Paragraph Two code)

question 2:

I need transfer value to mobile device, I set the type to ASCII, can run. (DHT11_READ)

but, I use this function set my Ambient Light, can't be run.

(see the Paragraph Three code)

question 3:

I wanna to transfer temperature value to mobile drive, this program can use cell phone set the value to control the Heater and Fan. but, my code can't correct in 8051, so, how should I do?

(see the Paragraph Four code)

 

this's my code.

Paragraph One:

*************************************************************************************

// UART

void uart_Init(void)  // Baud 9600

{

        SCON = 0x50;  // Set Mode (8-bit UART) ; Mode1,SM1=1,REN=1 

        TMOD = 0x20;  // Set Mode (8-bit timer with reload);Timer-1,Mode2

        TH1 = 0xFD;     // Baud 9600,B11.0592MHZ

        TR1 = 1;           // Start Timer 1 Running

}

*************************************************************************************

// module define type

bit DHT11_READ(unsigned char data[5]); // Temperture

 

float BH1750_READ(); // Ambient Light

*************************************************************************************

 

Paragraph Two:

*************************************************************************************

// receive char from mobile device.

while(RI==0);

cmd=SBUF;

 

switch(cmd)

{

  case 0x41:      //A=ASCII

    Heater(0);     //heater on/off

    delay(1000);

    RI=0;

    break;

  case 0x42:      //B=ASCII

    Heater(1);

    delay(1000);

    RI=0;

    break;

  case 0x43:      //C=ASCII

    Fan(0);         //fan on/off

    delay(1000);

    RI=0;

    break;

  case 0x44:      //D=ASCII

    Fan(1);

    delay(1000);

    RI=0;   

    break;

}

*************************************************************************************

 

Paragraph Three:

*************************************************************************************

//change type to ASCII

void DataDHT_TX(unsigned char Y) //temperture

{

unsigned char buf_Y[2];

unsigned int i;

 

buf_Y[0]=(Y/10)%10+0x30;  

buf_Y[1]=(Y%10)+0x30;      

 

for(i=0;i<2;i++)

  {

    SBUF=buf_Y;

    while(TI==0);

    TI=0;

  }

} 

 

 

// use the function in main() 

DataDHT_TX((int)Data[2]); // read temperture value 

 delay(100);

DataDHT_TX((int)Data[0]); // read humidity

delay(100);

*************************************************************************************

//change type to ASCII

void DataBH1750_TX(unsigned char X) //// Ambient Light

{

unsigned char buf_X[4];

unsigned int i;

 

buf_X[0]=(X/100)+0x30;    

buf_X[1]=(X%100)/10+0x30; 

buf_X[2]=(X/10)%10+0x30;  

buf_X[3]=(X%10)+0x30;     

 

for(i=0;i<4;i++)

 {

   SBUF=buf_X;

   while(TI==0);

   TI=0;

  }

}

*************************************************************************************

 

Paragraph Four code:

*************************************************************************************

dhtbuf[2] => temperature value.

First try.

// only case 1, program can complete, correct in 8051.

// use case1 and case 2, program complete, incorrect in 8051.

unsigned char c;

unsigned char *str=dhtbuf;



while(c=*str++)

{

switch(c)

{

case 0:

case 1:

if(dhtbuf[2]>=33)

{

Heater(0);

Fan(1);

delay(500);

} if(dhtbuf[2]==28) break;

case 2:

if(dhtbuf[2]<=23)

{

Heater(1);

Fan(0);

delay(500);

} if(dhtbuf[2]==28) break;

}

}



Sencond try.

// only first statement, program can complete, correct in 8051.

// use two statement, program complete, incorrect in 8051.

if(dhtbuf[2]>=33)

{

Heater(0);

Fan(1);

delay(500);

} if(dhtbuf[2]==28) break;

else if(dhtbuf[2]<=23)

{

Heater(1);

Fan(0);

delay(500);

} if(dhtbuf[2]==28) break;

*************************************************************************************

[Ashutosh Bhatt]

you r having blue tooth, LCD, IIC, but i dont understand what u want to do actually

[JDQQ8051]

I need show the value to my cell phone and LCD.

[Author]

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