Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-11 Thread Eric Decker
On Mon, Sep 10, 2012 at 7:25 PM, Xiaohui Liu whu...@gmail.com wrote: Thank you for your prompt and helpful reply. CIL. On Mon, Sep 10, 2012 at 1:25 AM, Eric Decker cire...@gmail.com wrote: On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote: Hello all, I have a few

Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-11 Thread Eric Decker
On Mon, Sep 10, 2012 at 8:47 PM, Xiaohui Liu whu...@gmail.com 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

Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-11 Thread Xiaohui Liu
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 cire...@gmail.com wrote: On Mon, Sep 10, 2012 at 8:47 PM, Xiaohui Liu whu...@gmail.com wrote: One additional comment. 3) Can USART0 and USART1 be used in parallel?

Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-10 Thread Xiaohui Liu
Thank you for your prompt and helpful reply. CIL. On Mon, Sep 10, 2012 at 1:25 AM, Eric Decker cire...@gmail.com wrote: On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote: Hello all, I have a few things uncertain about USART on TelosB. 1) This may be naive, but I'm

Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-10 Thread Xiaohui Liu
One additional comment. On Mon, Sep 10, 2012 at 10:25 PM, Xiaohui Liu whu...@gmail.com wrote: Thank you for your prompt and helpful reply. CIL. On Mon, Sep 10, 2012 at 1:25 AM, Eric Decker cire...@gmail.com wrote: On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote: Hello

[Tinyos-help] some questions regarding USART on TelosB

2012-09-09 Thread Xiaohui Liu
Hello all, I have a few things uncertain about USART on TelosB. 1) This may be naive, but I'm really curious why USART is needed in the first place. Why can't the CPU talk to, say, CC2420 directly since they are wired

Re: [Tinyos-help] some questions regarding USART on TelosB

2012-09-09 Thread Eric Decker
On Sun, Sep 9, 2012 at 9:39 PM, Xiaohui Liu whu...@gmail.com wrote: Hello all, I have a few things uncertain about USART on TelosB. 1) This may be naive, but I'm really curious why USART is needed in the first place. Why can't the CPU talk to, say, CC2420 directly since they are wired