Bitove polia a optimalizacia kody Was: STM32F051K6U7 ma USART2 ?

[Milan B.]

>
> Pohlad do vygenerovaneho kodu priniesol prekvapenie:
>  orr     r3, r3, #4096
>  orr     r3, r3, #1
>

No, tak stacilo pozriet do dokumentacie... treti operand je "any 
constant that can be produced by shifting an 8-bit value left by any 
number of bits within a 32-bit word"... preboha, kto toto navrhoval?

Tak ostanme len u toho, ze optimalizacia prace s bitovymi polami nie je 
nic moc.

-m-