[Tinyos-help] Concurrent Radio and Mote->PC communication in Tmote

[Joe Polastre]

SPC sends packets to the UART, but not raw bytestreams.  You need to
encapsulate your printf() argument into a message, send the message
via SP, and then decode it on the PC using the Java, C, or Python
tools.

-Joe

On 3/2/07, Tiago Camilo <tandre at dei.uc.pt> wrote:
> Hi Joe,
> Can you give us an example of using the UART interface with SPC.
> I had already a function that printf to the UART with HPLUART.put(), but
> when I integrated it with SPC, it stop working.
> Thanks,
> Tiago
>
> Joe Polastre wrote:
> > Hi Ankur,
> >
> >  The default baud rate is 57600 in Boomerang.
> >
> >  You should use GenericComm or SPC to send messages, and then address
> > messages to the UART  if you would like them to go to the PC.  UART
> > and Radio messages in Boomerang can be sent in parallel, because SPC
> > implements a pool that processes messages concurrently.
> >
> > -Joe
> >
> > On 3/1/07, Ankur Kamthe <akamthe at ucmerced.edu> wrote:
> >> Hi,
> >>
> >> I am trying to write an application wherein the Tmote receives data
> >> over the radio and forwards it to the PC via the UART. I was not
> >> getting the data to flow correctly into the PC, so I was concerned
> >> about the following things:
> >>
> >> 1. Is 57600 the default baud rate on the Tmote?
> >> 2. Do I need to use Resource Arbitration to send data to the PC and do
> >> radio communication for the Tmote?
> >>
> >> I am wiring my send, receive interfaces to UARTNoCRCPacket which wires
> >> to HPLUSART1M at the lower levels. HPLUSART1M gives the implementation
> >> of USART0 lowlevel functionality. I thought that Resource Arbitration
> >> was required only for communication between the radio and UART0.
> >>
> >> Could anyone correct me if I am making a wrong conclusion?
> >>
> >> Thanks,
> >> ankur
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