UART Woes

[VegaObscura]

I've added UART to my $50 bot and it does a great job of sending information to my computer.  I can easily read sensor values and output them to hyperterminal flawlessly.  The problem is, I'm having a lot of trouble sending information in the other direction.  I'm trying to use hyperterminal to send information to my bot and nothing I do seems to work.  I think my problem is not in the bot or the code but rather in getting hyperterminal to send anything.  If I have my bot to constantly send something and then I bridge RX and TX, the bot receives the information its sending.  But no matter what I do, I can't get it to receive anything from hyperterminal.

I've read that all you have to do to send a character from hyperterminal is press a button and hit enter.  The problem is nothing happens when I do that.  TX on my UART module doesn't even flash.

Here's the code I'm using:

Code: [Select]

#include "interface.h"

void init (void);

u08 myReceivedByte;

int main()
{

  init();

  while(1)
  {
  if (uartReceiveByte(&myReceivedByte)) {
               rprintf("Pressed: %d\n", myReceivedByte);
   }
  }
  return 0;
}

UART gets initialized in interface.h.  I have no idea what to try at this point.  Everything works fine when I'm sending data from the bot to hyperterminal, and the bot works fine when I try a loopback by bridging rx and tx.

[hopslink]

How have you configured flow control for your port in Hyperterminal? This should be set to NONE for basic comms. Sounds like yours may be set to Hardware?

[VegaObscura]

Fixed.  +1.  Thanks.