Hey Janos,
Thanks for having a look.
I see the bit banging code in HplAt45dbIOP. But where's the _underlying_
hardware being configured ? the bit banging is providing the SPI protocol. But
it seems to just "assume" that somehow the underlying uart is set to
synchronous mode, that the baud rate is OK, that the parity bit setting is OK,
etc. The Mps430 has a Msp430UartConfigure interface which explicitly sets these
parameters, but I can't find the equivalent for Atm128...
Cheers,
Matt
> Date: Tue, 24 Nov 2009 13:16:32 -0600
> Subject: Re: [Tinyos-help] USART1 on Atm128 - last try :-(
> From: sal...@isis.vanderbilt.edu
> To: mattb...@hotmail.co.uk
> CC: tinyos-help@millennium.berkeley.edu
>
> No, it's actually not wiring against the HplAtm128Uart* files. It's
> doing bit-banging in tos/platforms/mica2/chips/at45db/HplAt45dbIOP.nc.
> It's not relying on the USART subsystem in any way, that's why you
> couldn't find the code that configures the USART.
>
> Janos
>
> On Tue, Nov 24, 2009 at 5:29 AM, Matthew Bygo <mattb...@hotmail.co.uk> wrote:
> > Really no takers on the issue below ? is this the wrong mailing list ?
> > should I be posting this to the dev list ?
> > Cheers
> > Matt
> >
> > ________________________________
> > From: mattb...@hotmail.co.uk
> > To: oewyn...@gmail.com
> > CC: tinyos-help@millennium.berkeley.edu
> > Subject: RE: [Tinyos-help] USART1 on Atm128
> > Date: Fri, 13 Nov 2009 11:44:25 +0000
> >
> > Paul, and all,
> >
> > I'm not having much success with this :-(
> >
> > I just can't figure out how the At45db code configures the USART... the
> > files you pointed to set USART1 to asynch mode, and therefore don't
> > configure the clock line. But magically the At45db code is able to use the
> > USART1 pins in synch mode, with the right clock rate ! where is it
> > configuring this ?? I'm obviously not looking at this right.... Anyone help
> > would be really appreciated here !
> >
> > Thanks,
> > Matt
> >
> > ________________________________
> > From: mattb...@hotmail.co.uk
> > To: oewyn...@gmail.com
> > CC: tinyos-help@millennium.berkeley.edu
> > Subject: RE: [Tinyos-help] USART1 on Atm128
> > Date: Tue, 10 Nov 2009 17:13:27 +0000
> >
> > Paul,
> >
> > Thankyou for the quick response.
> > If I'm reading these files right, they configure both USART ports to be
> > asynchronous... which I find confusing ! HplAt45dbIOP.nc uses the USART in
> > synchronous mode, but the underlying HplAtm128UartP.nc sets it up as
> > asynchronous...
> > Any ideas what I'm missing ???
> >
> > Regards,
> > Matt
> >
> > ________________________________
> > Date: Tue, 10 Nov 2009 10:49:31 -0600
> > From: oewyn...@gmail.com
> > To: mat
> > tb...@hotmail.co.uk
> > CC: tinyos-help@millennium.berkeley.edu
> > Subject: Re: [Tinyos-help] USART1 on Atm128
> >
> > Matt,
> >
> > Take a look in this directory:
> >
> > tinyos-2.1.0/tos/chips/atm128/
> >
> > Files:
> >
> > HplAtm128Uart.nc
> > HplAtm128UartP.nc
> > HplAtm128UartC.nc
> >
> > These are the components that control the UART interfaces. Look for UART1
> > in those files. You might also want to look at
> >
> > tinyos-2.1.0/tos/platforms/micaz/MotePlatformC.nc
> >
> > which defines the pin used for serial input/output(UART0 i believe)
> >
> > -Paul
> >
> > Matthew Bygo wrote:
> >
> > Hi all,
> >
> > I want to reuse the USART1 for my own peripheral on a micaz, and I'm
> > struggling to find the USART hpl in the TinyOS code.
> >
> > My understanding is that the USART is used only for the flash chip and I can
> > find the SPI bit banging code (HplAt45dbIOP.nc) which operates over the
> > USART, but I can't find the actual USART config code.
> >
> > Presumably this is somewhere in the Atm128 folder... can anyone clarify ?
> >
> > Many thanks,
> > Matt
> >
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