Thank you for your patient and clear reply. I'll try my best to improve :-)

On Tue, Sep 11, 2012 at 2:24 AM, Eric Decker <[email protected]> wrote:

>
>
> On Mon, Sep 10, 2012 at 8:47 PM, Xiaohui Liu <[email protected]> wrote:
>
>> One additional comment.
>>
>>
>>
>>>>> 3) Can USART0 and USART1 be used in parallel?
>>>>>
>>>>
>>>> yes.   look at the data sheet.
>>>>
>>>>
>>>
>
>> *So SPI can be accessed even when UART is transmitting or receiving
>> since they are dealt with independent USART modules?*
>>
>
> That is correct.   But you really should practice being more precise.   It
> was clear from the context what you are asking.
>
> But  it would be mo' better to say, "the CC2420 can be accessed via its
> SPI bus implemented by USART0 running in SPI mode while at the same time
> USART1 is running in UART mode".
>
> If I didn't already know what you are talking about I would have to say
> know because a USART module can't be running in SPI and UART mode
> simultaneously.
>
> Practice clearer communications.
>
> I assume english isn't your first language (your name),  very good english
> by the way.
>
>
> eric
>
>


-- 
-Xiaohui Liu
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