Lpc2000

Hello,

I have an external circuit that echoes back the caracters that I am 
sending out of UARTs.
Is there any way to disable RX while I'm transmitting (like Rx Enable 
on other micros)?

-I am using FIFO-

I disabled both RX interrupts during transmission.
When tx is ended, I clear FIFO buffers (UxFCR bit 1)
This should clear the RX FIFO buffer, isn't it?

When I re-enable RX interrupts I get in RX several times the last 
char that was sent.

Any suggestion?

Thanks.

I'm not sure that it suits to your problem, but similar problem I solved with RS485 transmitter and another small micro. In both cases (Rx and Tx) I used only Rx interrupt and there I decide if sent next character or put received into buffer.
Jarda
  ---------- 

  Hello,

  I have an external circuit that echoes back the caracters that I am 
  sending out of UARTs.
  Is there any way to disable RX while I'm transmitting (like Rx Enable 
  on other micros)?

  -I am using FIFO-

  I disabled both RX interrupts during transmission.
  When tx is ended, I clear FIFO buffers (UxFCR bit 1)
  This should clear the RX FIFO buffer, isn't it?

  When I re-enable RX interrupts I get in RX several times the last 
  char that was sent.

  Any suggestion?

  Thanks.


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