transmit a character continuously through PIC 16f688

[sajjad]

hiii

i have to transmit continuously a character through pic using USART and observe it  on hyper terminal. i am using internal oscillator.

i am using help  my code is :

 

void tx_data(unsigned char);

 

unsigned int i=0;

 

#define FREQ 8000000    // Frequency = 8MHz

#define baud 9600

#define spbrg_value (((FREQ/64)/baud)-1)    // Refer to the formula for Baud rate calculation in Description tab

 

void main()

{

    SPBRG=spbrg_value;                                // Fill the SPBRG register to set the Baud Rate

    RCSTA.SPEN=1;                                     // To activate Serial port (TX and RX pins)

  TXSTA.TXEN=1;                                     // To enable transmission

 osccon=0b01110101;                               // using internal oscillator 

  while(1)

    {

        tx_data(‘a’);        // Transmit the same data back to PC

    }

 

 

}

 

 

void tx_data(unsigned char data1)

{

    TXREG=data1;                                     // Store data in Transmit register

    while(PIR1.TXIF==0);                             // Wait until TXIF gets low

}

 

 

 

this code is giving output on proteus but not on hardware when i am using MAX232 with terminal.. 

kindly guide me .

please tell me the missing or wrong step i am doing.

thanking in advance 

 

 

[AJISH ALFRED]

Please post your circuit diagram.

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