I am preparing the code to make the conversion of the "raw" RSSI value available in received message (indirectly a reading from ADC INPUT 0 - RSSI MONITOR). Although, I am developing using T1 (TinyOS 1.x), I read the T2 doc http://docs.tinyos.net/index.php/Rssi_Demo and noted the same thing I observed in some examples I saw in the Internet: what are about the battery reading for each message?
I understood that, according to the manufacturer manual, VRSSI = 'raw counts' * battery voltage / 1024. So, for me, the correct code must present a reading of the battery before sending any 'raw RSSI' for conversion. Also, sometimes, I saw in some codes/messages, a direct use of '3' in the place of "battery voltage". Reading the schematic of the Mica2, I didn't see any voltage regulator to make such assumption and I am not sure about this approach considering the CC1000 data sheet. So, what I have in mind is to develop the algorithm to send informations to a certain procedure (internal function for locally conversion or external program): 1) First reading: send (battery level, raw RSSI) 2) Next reading: if the battery level doesn't change according to a certain threshold, send (raw RSSI) 3) Next reading: if the battery level does change according to a certain threshold, send (new battery level, raw RSSI) Please, I would like to hear if I misunderstood the topic "at all" or, if not, I would like to hear different solutions or suggestions. []s, Agnelo R. Silva
_______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
