[Mspgcc-users] Re: Switching clock source

[Pedro Zorzenon Neto]

On Thu, Mar 27, 2003 at 11:10:04AM -0500, D.Pageau wrote:
> do
> {
>       IFG1 &= ~OFIFG;                       // Clear OSCFault flag
>       for (i = 0xFF; i > 0; i--);           // Time for flag to set
> }
> while ((IFG1 & OFIFG) == OFIFG);      // OSCFault flag still set? 

Hi Pageau,

  The optimizer will detect this as "useless" loop and remove it.

  Instead of:
    for (i = 0xFF; i > 0; i--);
  try:
    for (i = 0xFF; i > 0; i--) __asm__ __volatile__("; loop");

  See also:
    http://mspgcc.sourceforge.net/doc_appendixE.html

  Bye,
   Pedro