Hello all!
I am wondering if there is a bug in the Tinyos cc2420 rssi register
implementation. Because when I try to sense the background noise I usually
found -98 values which is normal value as I don't have a 802.11 traffic
however sometimes I found a value about -173 value?!! abnormal

I am using this interface Read<uint16_t> as NoiseReading;
and at this event :readDone(error_t result, uint16_t data)
I set the noise_reading variable to noise_reading= (data-0x7F)&0xFF;

Where is the wrong here?

What can be the source of -173 value?

Thank you!

Best regards,
Nahr Elk
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