[Gumstix-users] Re: Recommendations for a sensor-driven system

[Dima D. <dim...@gm...>]

Hi Dave,

On 2005-10-25 17:59:47 +0100, Dave Hylands <dhy...@gm...> said:

> Hi Dima,
> 
>>> The robostix has 8 channels of 10 bit ADC.
>> 
>> Yes, as far as I understand the ADC is the one included on the
>> Atmega128 MCU... In this case, I would need to program this MCU and
>> make it communicate with the Linux system on the main board, right?
> 
> Yep. There is some sample code. The Flash-LED sample reads all 8 ADC's
> (currently as 8 bit values) and prints the results on the UART.

Thanks a lot for your clarifications and suggestions about using the 
Robostix... Do you have an idea of what kind of interface is exposed by 
ADC on the Audiostix? Is there out-of-the-box support?

> A couple of fairly minor changes would make it reads the 10 bit values
> and report them.

I guess here you mean some bit shifting to assemble the full value on a 
16-bit variable...

> They generate a serial output, so it will be connected to a serial
> port on the gumstix or robostix (I haven't decided which yet),

Regarding the GPS thingie, my main concern is on how to connect it 
physically and provide power. Do I need an electronics expert to do it? 
If I connect the Robostix to STUART, where do I connect the GPS 
receiver? Are you using its USB evaluation board? Can you shed some 
more light for me please?

(Sorry, for the ultra-basic questions, but I am just starting to 
'gumstix'). TIA.
-- 
/dima