Hi Stefano, Did you check if PacketRSSI.isValid() returns TRUE? In some cases I cannot guarantee that the returned ED value is correct.
> 1) The required 140 microsec did not pass, but I think this is not the case After looking at the code it might be possible (although very unlikely) that we handle the IRQ, read the status register in 140 microsec. I have moved the reading of the PHY_ED_LEVEL to the end of the reception in the attached file. Please replace your copy of RF230LayerP.nc with this one ang give it a try and let us know. > 2) The ED is an averaged RSSI value calculated from 8 symbols. Maybe > we read this value too close to the beginning of the start message and > we measure mostly the "silence" before the transmission. I will looki > at the code. Value 0 means below -91 dBm, so probably that value is not a correctly measured value, so ED measurement did not finish or was not performed. Miklos
RF230LayerP2.nc
Description: Cdf file
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