Stictly speaking they don't share pins. But they do share the underlying h/w. You would have to multiplex spi0 with uart0 when both are active. I have some code that handles this but I haven't finished it.
Only one of the drivers can own the h/w (USART0) at any given time. The pins themselves aren't shared. So you won't see it on a schematic. eric On Mon, Oct 26, 2009 at 8:16 AM, David Conde <[email protected]> wrote: > Hi, > > > > I have read some documentation about using UARTRX0 and UARTTX0 pines 2 and > 4 in U2. And some people said that is not possible to use UART0 because of > they share pines with SPI bus in CC2420 and FlashMemory. I have taken a look > at Telosb Schematic and I do not see any shared pin for UART0, am I > missunderstanding anything? Can I connect directly my external devices Uart > pines to UART0 in Telosb?Do I have to take anything into account?What TinyOS > component do I have to use to work with UART0? > > > > I am using TinyOS1.x and Telosb motes. > > > > Thank you in advance > > > > > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Eric B. Decker Senior (over 50 :-) Researcher
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