[Tinyos-help] how to obtain RSSI with Mica2

[Xavier Orduña]

Hello!

Looking on tinyos 2 source documentation I found this interesting
component for you:

Component: tos.chips.cc1000.CC1000RssiP

or maybe you are working with tinyos 1?

Bye!

Xavi

On 6/29/07, CASTEL Myriam <myriam.castel at utt.fr> wrote:
> Hello,
>
> I'm trying to obtain the RSSI value with Mica2 motes.
> -I programmed a component which stores the strength of a TOSMsg received:
> RSSI=*((uint8_t *)recv_packet->strength);
> But this doesn't give reasonnable results. I think this method is only
> for the micaz? Isn't it?
>
> - In the documentation, I saw that the RSSI was given by the channel 0
> in mica2.
> I tried to sample channel 0 with in configuration file: MyApp.ADC->
> ADCC.ADC[0];
> in module file:  event TOS_MsgPtr ReceiveMsg.receive(TOS_MsgPtr recv_packet){
>         call ADC.getData();
>         return recv_packet;
>   }
> async event result_t ADC.dataReady(uint16_t data) {
>         atomic pack->xData.datap1.value = data;
>         post sendMsg();
>         return SUCCESS;
> }
> but the problem is that the mote execute ADC.dataReady even if getData
> wasn't called. Maybe I have forgotten some elements as:
> call ADC.Control.bindPort(TOS_ADC_CC_RSSI_PORT,TOS_ACTUAL_CC_RSSI_PORT)
> or other things.
>
> Can you help me to obtain RSSI value (with channel 0 or other)? If you
> have the code to compute RSSI, can you send it to me?
>
> I'm sorry for this question but I'm new and I don't find the answers in
> the documentation provided by Crossbow.
>
> Thanks
>
>
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>


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