[Tinyos-help] Attaching a third-party sensor to telosB/tmote sky

[Michael Schippling]

If your sensor is sending serial data you don't need an ADC channel
you need to connect it to a serial input on the telosb and use
the UART components to read data. UART0 is available on the 10
pin I/O header at:
   pin 2    UART0RX          UART0 receive        PORT35
   pin 4    UART0TX          UART0 transmit       PORT34
   pin 9    AVss             Analog ground

Search for use examples. I haven't used it myself.
MS


kfullert at mines.edu wrote:
> I've been trying to configure the analog-digital converter on a telosB  
> mote so that it can read from an external, third-party sensor.  I'm  
> trying to use the AdcReadStream modules to do this, but I have no idea  
> how to set up the configuration structure (the one that's passed to  
> the module when the ADC needs to know how to configure itself).  None  
> of the TinyOS documentation has helped me much, probably because I  
> don't know enough about the motes to know what the various parameters  
> correspond to.
> 
> The sensor (Decagon's 5TE model) sends a serial stream of ASCII  
> characters (6-15 bytes long).  The stream is 1200 baud asynchronous  
> with 8 data bits, no parity, and one stop bit; the voltage levels are  
> 0-3.6V and logic levels are active low.
> 
> The configuration doesn't provide for all of this data, and it  
> requires much more that's not specified for the sensor (including what  
> appear to be 3 types of clock?).  If someone could give me a  
> configuration that might work for this project, or a pointer to  
> less-technical documentation, I'd really appreciate it.
> 
> -Kyle
> 
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