[PIC] PIC UART communicaion with PC

[Naseer Ahmed]

Hello dear friends,

Please guide me against the following problem:

I am trying to develop uart communication between PIC 16F877A (20 MHz crystal) and PC using hyper terminal.

I wrote the following simple code in mikroc Pro v.6.5.0 compiler to run:

char RS;

void main()

{
   TRISC = 0xF0;

    Uart1_Init(9600);

  while(1)
  {
      if (uart1_data_ready()==1)
    {
        RS = uart1_read();

        uart1_write(RS);
     }
  }
}

But it is not working.

I have tested the serial cable and MAX 233 IC by shorting TX and Rx together and these are working properly.

The protocols are also same:

Baud rate of both PC and code are 9600 bps each
data bits 8
No parity bit
stop bit 1.

Can you kindly tell the point of problem?

Thanks

Regards

Naseer Ahmed

 

[anboli]

Hello dear friends,

Please guide me against the following problem:

I am trying to develop uart communication between PIC 16F877A (20 MHz crystal) and PC using hyper terminal.

I wrote the following simple code in mikroc Pro v.6.5.0 compiler to run:

char RS;

void main()

{
   TRISC = 0xF0;

    Uart1_Init(9600);

  while(1)
  {
      if (uart1_data_ready()==1)
    {
        RS = uart1_read();

        uart1_write(RS);
     }
  }
}

But it is not working.

I have tested the serial cable and MAX 233 IC by shorting TX and Rx together and these are working properly.

The protocols are also same:

Baud rate of both PC and code are 9600 bps each
data bits 8
No parity bit
stop bit 1.

Can you kindly tell the point of problem?

Thanks

Regards

Naseer Ahmed

Could you update your uart function and interrupt routine?