BlueTooth keeps sending hex 80.

Thread Starter

FroceMaster

Joined Jan 28, 2012
556
Hi
have this code, and it works partly, but it allways sends the Hex 80. around every 2-3 second.
HC-05 and PIC 16F690
If i send a command to PIC, it return what i ask for, so connections is working,
Code:
/*
 
*/
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <xc.h>

// CONFIG
#pragma config FOSC = INTRCIO   // Oscillator Selection bits (INTOSCIO oscillator: I/O function on RA4/OSC2/CLKOUT pin, I/O function on RA5/OSC1/CLKIN)
#pragma config WDTE = ON        // Watchdog Timer Enable bit (WDT enabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF      // MCLR Pin Function Select bit (MCLR pin function is digital input, MCLR internally tied to VDD)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = ON       // Brown-out Reset Selection bits (BOR enabled)
#pragma config IESO = ON        // Internal External Switchover bit (Internal External Switchover mode is enabled)
#pragma config FCMEN = ON       // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is enabled)


#define _XTAL_FREQ 8000000
#define FOSC 8000000L


#define Skip_ROM             0xCC
#define Convert_T             0x44
#define Read_scratchpad     0xBE

#define Port1_18B20             RB4
#define Tx1_18B20               TRISB4 = 0
#define Rx1_18B20               TRISB4 = 1
#define Port2_18B20             RC6
#define Tx2_18B20               TRISC6 = 0
#define Rx2_18B20               TRISC6 = 1
#define Port3_18B20             RC7
#define Tx3_18B20               TRISC7 = 0
#define Rx3_18B20               TRISC7 = 1

#define WAIT1                1000
#define WAIT2                500

#define DS18B20_CONV_TIME    750//750
#define DS18B20_RESET_PULSE 480//480
#define DS18B20_WAIT_TIME     60//60
#define DS18B20_PULLUP_TIME 2//2

#define ONEWIRE_PRESENT     0
#define ONEWIRE_ABSENT         1
unsigned char lsb;
    unsigned char msb;
    unsigned char decimal;
    unsigned char buffer[11];
    unsigned int sign_flag =0;
    unsigned int integer =0;
    unsigned int integer1 =0;
    unsigned int integer2 =0;
    unsigned int integer3 =0;
    unsigned int integer4 =0;
unsigned int run,readwhattemp;
char negativ;
signed int total,fraction,now,temp1,temp2,temp3,tempmin1,tempmin2,tempmin3,tempmax1,tempmax2,tempmax3,oktemp1,get_times_run;
signed int tempmin1_part1,tempmin1_part2,tempmax1_part1,tempmax1_part2,tempmin2_part1,tempmin2_part2,tempmax2_part1,tempmax2_part2;
signed int tempmin3_part1,tempmin3_part2,tempmax3_part1,tempmax3_part2,tempmin1OK,tempmin2OK,tempmin3OK,tempmax1OK,tempmax2OK,tempmax3OK;

__bit data,recieving,readytorecieve;

uint8_t UART_Buffer = 0; // is a 8bit integer / 1.byte

void __interrupt() isr (void)
{
if (RCIF==1)
   {
   CREN=0;
   UART_Buffer=RCREG;
   data=1;
   CREN=1;
  }

}


void setup (void)
{
IRCF0=1;
IRCF1=1;
IRCF2=1; // 8 mhz
SCS=1; // internal clock
TRISA0=1; // input data
TRISA1=1; // data
TRISA2=1;
TRISA3=1; // reset
TRISA4=1;
TRISA5=1;
TRISB4=1;//input Temp1
TRISB5=1;//Input RX
TRISB6=1;
TRISB7=0; // out TX
TRISC0=0; // Relay on
TRISC1=1;
TRISC2=1;
TRISC3=1;
TRISC4=1;
TRISC5=1;
TRISC6=1; //Temp 2
TRISC7=1; //Temp 3
ANSEL=0;
ANSELH=0;
}
void EUSART_Write(uint8_t txData)
{
    while(0 == PIR1bits.TXIF)
    {
    }

    TXREG = txData;    // Write the data byte to the USART.
}
void EUSART_Initialize(void)
{
  //    TRISC6 = 0; // As stated in the datasheet
// TRISC7 = 1; // As stated in the datasheet
// ANSELC=0; // digital
    // Set the EUSART module to the options selected in the user interface.

    // ABDOVF no_overflow; SCKP Non-Inverted; BRG16 16bit_generator; WUE disabled; ABDEN disabled;
    BAUDCTL = 0x08;

    // SPEN enabled; RX9 8-bit; CREN disabled; ADDEN disabled; SREN disabled;
    RCSTA = 0x80;

    // TX9 8-bit; TX9D 0; SENDB sync_break_complete; TXEN enabled; SYNC asynchronous; BRGH hi_speed; CSRC slave;
    TXSTA = 0x24;

    // SP1BRGL 25;
    SPBRG = 207;//0x08;//19;

    // SP1BRGH 0;
    SPBRGH = 0x00;
   
    CREN=1;
    RCIE=1;
    PEIE=1;
    GIE=1;

}
  unsigned char reset()
{
    if (readwhattemp==1) 
    {Tx1_18B20;
    Port1_18B20 = 0;
    __delay_us(DS18B20_RESET_PULSE);
    Rx1_18B20;
    __delay_us(DS18B20_WAIT_TIME);

    if (Port1_18B20 == 1)
    {
        __delay_us(DS18B20_RESET_PULSE);
        return ONEWIRE_PRESENT;
    }

    __delay_us(DS18B20_RESET_PULSE);
    return ONEWIRE_ABSENT;
    }
    if (readwhattemp==2)
    {Tx2_18B20;
    Port2_18B20 = 0;
    __delay_us(DS18B20_RESET_PULSE);
    Rx2_18B20;
    __delay_us(DS18B20_WAIT_TIME);

    if (Port2_18B20 == 1)
    {
        __delay_us(DS18B20_RESET_PULSE);
        return ONEWIRE_PRESENT;
    }

    __delay_us(DS18B20_RESET_PULSE);
    return ONEWIRE_ABSENT;
    }
   
    if (readwhattemp==3)
        {Tx3_18B20;
    Port3_18B20 = 0;
    __delay_us(DS18B20_RESET_PULSE);
    Rx3_18B20;
    __delay_us(DS18B20_WAIT_TIME);

    if (Port3_18B20 == 1)
    {
        __delay_us(DS18B20_RESET_PULSE);
        return ONEWIRE_PRESENT;
    }

    __delay_us(DS18B20_RESET_PULSE);
    return ONEWIRE_ABSENT;
    }
}

void write(char WRT)
{
    char i,Cmd;
    Cmd = WRT;
   
    if(readwhattemp==1)
    {
    Rx1_18B20;
    for(i = 0; i < 8; i++)
    {
        if((Cmd & (1<<i))!= 0)
        {

            Tx1_18B20;
            Port1_18B20 = 0;
            __delay_us(DS18B20_PULLUP_TIME);
            Rx1_18B20;
            __delay_us(DS18B20_WAIT_TIME);
        }
        else
        {

            Tx1_18B20;
            Port1_18B20 = 0;
            __delay_us(DS18B20_WAIT_TIME);
            Rx1_18B20;
        }
    }
    }
    if (readwhattemp==2)
    {
    Rx2_18B20;
    for(i = 0; i < 8; i++)
    {
        if((Cmd & (1<<i))!= 0)
        {

            Tx2_18B20;
            Port2_18B20 = 0;
            __delay_us(DS18B20_PULLUP_TIME);
            Rx2_18B20;
            __delay_us(DS18B20_WAIT_TIME);
        }
        else
        {

            Tx2_18B20;
            Port2_18B20 = 0;
            __delay_us(DS18B20_WAIT_TIME);
            Rx2_18B20;
        }
    }
 
    }
        if (readwhattemp==3)
    {
    Rx3_18B20;
    for(i = 0; i < 8; i++)
    {
        if((Cmd & (1<<i))!= 0)
        {

            Tx3_18B20;
            Port3_18B20 = 0;
            __delay_us(DS18B20_PULLUP_TIME);
            Rx3_18B20;
            __delay_us(DS18B20_WAIT_TIME);
        }
        else
        {

            Tx3_18B20;
            Port3_18B20 = 0;
            __delay_us(DS18B20_WAIT_TIME);
            Rx3_18B20;
        }
    }
   
       
       
}
    }
   

unsigned char read()
{
    char i,result = 0;
     if (readwhattemp==1)
     {
    Rx1_18B20;
    for(i = 0; i < 8; i++)
    {
        Tx1_18B20;
        Port1_18B20 = 0;
        __delay_us(DS18B20_PULLUP_TIME);
        Rx1_18B20;
        if(Port1_18B20 != 0)
        {
            result |= 1<<i;//i
        }
        __delay_us(DS18B20_WAIT_TIME);
    }
     } // end readwahttemp 1
   
    if (readwhattemp==2)
     {
    Rx2_18B20;
    for(i = 0; i < 8; i++)
    {
        Tx2_18B20;
        Port2_18B20 = 0;
        __delay_us(DS18B20_PULLUP_TIME);
        Rx2_18B20;
        if(Port2_18B20 != 0)
        {
            result |= 1<<i;//i
        }
        __delay_us(DS18B20_WAIT_TIME);
    }
     } // end readwahttemp 3
   
    if (readwhattemp==3)
     {
    Rx3_18B20;
    for(i = 0; i < 8; i++)
    {
        Tx3_18B20;
        Port3_18B20 = 0;
        __delay_us(DS18B20_PULLUP_TIME);
        Rx3_18B20;
        if(Port3_18B20 != 0)
        {
            result |= 1<<i;//i
        }
        __delay_us(DS18B20_WAIT_TIME);
    }
     } // end readwahttemp 3
   
    return result;
}
void laestemp (void)
{

                write(Skip_ROM);
                write(Convert_T);
                __delay_ms(DS18B20_CONV_TIME);

                reset();
                write(Skip_ROM);
                write(Read_scratchpad);
                lsb = read();
                msb = read();
               
                unsigned int sign = 248 & msb;
                if(sign==0)
                    decimal = lsb & 15;

                if(sign!=0)
                {
                    decimal = lsb ^ 15;
                    decimal = decimal^255;

                }

                unsigned char places[4]= {0};
                if((decimal&8) == 8)
                {

                    places[0] =  places[0] + 5;

                }

                if((decimal&4)==4)
                {
                    places[0] = places[0] + 2;
                    places[1] = places[1] + 5;
                }

                if((decimal&2)==2)
                {
                    places[0] = places[0] + 1;
                    places[1] = places[1] + 2;
                    places[2] = places[2] + 5;
                }

                if((decimal&1)==1)
                {
                    places[1] = places[1] + 6;
                    if(places[1]>9)
                    {
                        places[1]= places[1]-10;
                        places[0]= places[0]+1;
                    }

                    places[2] = places[2] + 2;
                    places[3] = places[3] + 5;

                }


                if(sign!=0)
                {
                    integer1 =(places[0]*1000);
                    integer2 = (places[1]*100);
                    integer3 = (places[2]*10);
                    integer4 = (places[3]);
                    integer = integer1+integer2+integer3+integer4;
                    if(integer==0)
                    {
                        sign_flag=1;
                    }
                    integer = 10000-integer;

                    integer1 = integer/1000;
                    integer2 = (integer/100)-(10*integer1);
                    integer3 = (integer/10)-(100*integer1)-(10*integer2);
                    places[0]= integer1;
                    places[1]= integer2;
                    places[2]= integer3;
                    places[3]= integer4;

                }
                lsb = lsb >> 3;
                msb = msb << 5;
                lsb = msb | lsb;
                if(sign !=0)
                {
                    lsb =(lsb)^255;
                    buffer[0]='-';
                }
                else
                    buffer[0] = '+';

                lsb = lsb >>1;
                printf("sign %d\n", sign_flag);

                buffer[1] = ((lsb / 100)%10) + 48;
                buffer[2] = (((lsb / 10)%10) + 48);
                buffer[3] = (((lsb)%10))+ 48 + sign_flag;
                buffer[4] = '.';
                buffer[5] = ((places[0]%10)+48);
                buffer[6] = ((places[1]%10)+48);
                buffer[7] = ((places[2]%10)+48);
                buffer[8] = ((places[3]%10)+48);
                buffer[9] = ' ' ;//0xF8;
                buffer[10]= 'C';
                total=0;
                total=((lsb / 100)%10)* 100;
                total=total+(((lsb / 10)%10) * 10);
                total=total+(((lsb)% 10))+  sign_flag;
                fraction=0;
                fraction=((places[0]%10)+48)-48;
       
                if (sign!=0)
                {now=500-((total*10)+fraction); // add 50 grader pga intet negativ result
                negativ=1;
                }
                if (sign==0)
                {now=500+((total*10)+fraction); // add 50 grader
                negativ=0;
                }
                switch (readwhattemp)
                {   case 1:
                        temp1=now;
                        readwhattemp=2;
                        break;
                    case 2:
                        temp2=now;
                        readwhattemp=3;
                        break;
                    case 3:
                        temp3=now;
                        readwhattemp=1;
                        break;
                    default:
                        break;
                }
               
                }
void tjekifoktemp(void)
{tempmin1OK=0; // set all to 0.
tempmin2OK=0;
tempmin3OK=0;
tempmax1OK=0;
tempmax2OK=0;
tempmax3OK=0;

if (temp1>tempmin1) tempmin1OK=1;
if (temp1<tempmax1) tempmax1OK=1;
if (temp2>tempmin2) tempmin2OK=1;
if (temp2<tempmax2) tempmax2OK=1;
if (temp3>tempmin3) tempmin3OK=1;
if (temp3<tempmax3) tempmax3OK=1;

if (tempmin1OK==1 && tempmin2OK==1 && tempmin3OK==1)
{//do nothing all is bigger degree than min
}
else
{
    RC0=1;
}

if (tempmax1OK==1 && tempmax2OK==1 && tempmax3OK==1)
{ // all is ok
}
else // turn off heater, cause over max degree.
{ RC0=0;
}


}


void main(void)
{
    setup();
    EUSART_Initialize();
    readwhattemp=1;
    temp1=0;
    temp2=0;
    temp3=0;
    TXEN=1;
    SYNC=0;
    SPEN=1;
    while(1)
    {
        if (data==1)
        {
            data=0;
            readytorecieve=0; // 0= can reci, 1= not this time
           
        if ((UART_Buffer==0x01) && (recieving==0)) // send temp 1-3, incl min&max
        {
            EUSART_Write(temp1/256); // gives hole number
            EUSART_Write(temp1-(256*(temp1/256))); 
            EUSART_Write(temp2/256); // gives hole number
            EUSART_Write(temp2-(256*(temp2/256))); 
            EUSART_Write(temp3/256); // gives hole number
            EUSART_Write(temp3-(256*(temp3/256))); 
            EUSART_Write(tempmin1/256); // gives hole number
            EUSART_Write(tempmin1-(256*(tempmin1/256))); 
            EUSART_Write(tempmax1/256); // gives hole number
            EUSART_Write(tempmax1-(256*(tempmax1/256))); 
            EUSART_Write(tempmin2/256); // gives hole number
            EUSART_Write(tempmin2-(256*(tempmin2/256))); 
            EUSART_Write(tempmax2/256); // gives hole number
            EUSART_Write(tempmax2-(256*(tempmax2/256))); 
            EUSART_Write(tempmin3/256); // gives hole number
            EUSART_Write(tempmin3-(256*(tempmin3/256))); 
            EUSART_Write(tempmax3/256); // gives hole number
            EUSART_Write(tempmax3-(256*(tempmax3/256))); 
           
        }
       
            if ((UART_Buffer==0x02) && (recieving==0)) // Recieve data
            { // set something active, so i know i recieve data.
                recieving=1;
                 readytorecieve=1; // to pass next statement
                 get_times_run=0;
            }
           
            if ((UART_Buffer==0x03) && (recieving==0)) // check if data is ok,
            {
            
              
               
            }
           
           
            if ((recieving==1)&&  (readytorecieve==0))// recieving data.  send one at a time, more easy
            { //
       //recieving=0;    // maybe send 6 more, to seperate into 2,
       if (get_times_run==0) tempmin1_part1=UART_Buffer;
       if (get_times_run==1) tempmin1_part2=UART_Buffer;
         if (get_times_run==2) tempmax1_part1=UART_Buffer;
         if (get_times_run==3) tempmax1_part2=UART_Buffer;
         if (get_times_run==4) tempmin2_part1=UART_Buffer;
         if (get_times_run==5) tempmin2_part2=UART_Buffer;
      
         if (get_times_run==6) tempmax2_part1=UART_Buffer;
         if (get_times_run==7) tempmax2_part2=UART_Buffer;
         if (get_times_run==8) tempmin3_part1=UART_Buffer;
         if (get_times_run==9) tempmin3_part2=UART_Buffer;
         if (get_times_run==10) tempmax3_part1=UART_Buffer;
         if (get_times_run==11)
         {tempmax3_part2=UART_Buffer;
        recieving=0;
        // add to hole
        tempmin1=(tempmin1_part1*256)+tempmin1_part2;
        tempmax1=(tempmax1_part1*256)+tempmax1_part2;
        tempmin2=(tempmin2_part1*256)+tempmin2_part2;
        tempmax2=(tempmax2_part1*256)+tempmax2_part2;
        tempmin3=(tempmin3_part1*256)+tempmin3_part2;
        tempmax3=(tempmax3_part1*256)+tempmax3_part2;
       
         }
      
        get_times_run++;
       
      
        // slit data into 6.,
        }
           
           
        } // end interrupt data
       
        // check temp
        // dont want to read temp all the time, so will add a delay, like run 100 times with no reading, then read 1, 100, read 2, 100, read 3 ect.
        run++;
        if (run==100)
        { run=0;
         
           {// laestemp();//read temp-
            // tjekifoktemp(); // if i need to turn on/off relay     
         
           }
       
        }
       
       

       
    }
   
}
 

spinnaker

Joined Oct 29, 2009
7,837
Here we go again. How many times have you asked this kind of question before? And what has our response been? Yep

What have you done to troubleshoot this problem?

Do you really think someone is going to sit down and analyze 600+ lines of code? Learn to use the debugger already! Learn to break the problem down into smaller pieces already. I have recommended that to you several times now and you refuse to listen.

And learn to code. Just at a quick glance I see this:
Code:
if ((UART_Buffer==0x03) && (recieving==0)) // check if data is ok,
            {
           
             
               
            }
Why do you have code that does nothing? maybe for future development but then why are you posting? Which goes back to breaking the problem down into smaller pieces.

Now go back, break the problem into smaller pieces and use your debugger. That is why it is there. When you narrowed the issue down and you are still stuck, post back.
 
Top