Lpc2000

At 03:00 PM 10/10/04 +0000, you wrote:


>I started on a LPC2124 with 10MHz xtal, and none of the newlib-lpc
>examples picking up the right baud rate. (of course after adjusting
>SetNativeSpeed).
>
>Then I tried the UT040803A  example, no luck on 10MHz. Then I throw in
>a 14.7456MHz xtal, and the UT040803A is working OK now. But the
>newlib-lpc examples still not picking up the right baud rate. This is
>how it's configured:
>
>         SetNativeSpeed(14746uL);
>         sp.baud   = 115200uL;
>         sp.length = UART_WORD_LEN_8;
>         sp.parity = UART_PARITY_NONE;
>         sp.stop   = UART_STOP_BITS_1;
>         SetMAM( 3u, MAM_full_enable);
>         VPBControl(VPB_DIV1);
>         SetDesiredSpeed(60000uL);
>
>Is there any obvious reason why this is not working? (lpc_hello_rs232
>from WinARM)?

This doesn't actually set the baud rate anywhere.

 From the example test2.c

         /*  Set up serial port to desired rate.                         */
  (void)ioctl( fileno(stdout), UART_SETUP, &sp);

Until the ioctl call is made nothing has set the baud rate.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III