>
> At first I'm sorry for interrupting. Can some one provide me the code to get
> the RSSI value for CC2430 mote? and I'm using tinyos-2.x. Please help me.
> Thanks for your help.
>
As far as I know, you can either get a background RSSI value, or RSSI
values for individual received packets. I assume you mean the latter.
Here is how I do it in one of my apps:
# In your public module:
implementation {
components CC2420ActiveMessageC as CC2420;
YourPrivateModuleP.CC2420Packet -> CC2420;
/* Also wire up your Receive interface etc here */
}
# In your private module:
module PrivateModuleP {
uses interface CC2420Packet;
}
# Inside your Receive.receive event handler:
uint8_t raw_rssi = call CC2420Packet.getRssi(bufPtr);
/* And here is how you convert to a human-understandable rssi value */
/* From this post:
http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2006-April/016081.html
*/
/* - First convert from 2's complement */
int16_t rssi = raw_rssi;
if (rssi >= 128) rssi -= 256;
/* - Now subtract the RSSI_OFFSET */
rssi -= 45; /* rssi now contains a human-understandable RSSI in dBm. */
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