On 12/27/2013 11:39 PM, Eric Decker wrote: > Well sort of. > > The LS Research module (lsrdev) is a combined msp4305437a coupled with a > cc2520/cc2591 radio combination. It is FCC certified.
Even though the radio setup code can be written by the usual TinyOS user? That's against the intent of the FCC rules unless the setup is in a separate code that is not easily changed. The FCC rules allow split modular radios to be certified in groups for manufacturing cost benefits like Ciseco's XRF. Several different microcontrollers with different firmware only are tested with the same transceiver implementation as a group to operate at their different carrier frequencies such as 315, 450, 900 and 868MHz, and each can then have an FCC certified label for one frequency. If the microcontroller and radio are not part of the same printed circuit the FCC requires some physical keying or firmware signatures that do not let them function with anything but the original carrier frequency as they are labelled. Is TinyOS FCC certifiable as to being "difficult for the user to change the carrier frequency? IS that how LS Research has an FCC certified tag? If so, great, but I'd still rather have a completely separate radio setup done by another inexpensive ultra low power microcontroller from the one running TinyOS, and not possible to reflash it easily so it qualifies for many FCC certified applications. > > However we don't talk to it as a seperate multi-processor but rather I put > TinyOS down onto the module itself. Splitting the radio setup from the main microcontroller, or as you say, "talk to it as a separate multi-processor", allows FCC certified radio modules that many platforms can benefit from. I'll be figuring how to use Ciseco XRF modules as separate multi-processor handling radio setup, or prove it not feasible with TinyOS some day, probably in 2014, when I have a little budget for it. I may have to drop TinyOS for my system plans at first in order to get a product out, then add it later with profits to spend. I'm wanting to create terrestrial field radio stations with rainproof enclosures and solar power, with coarse grained modules: solar, battery, 868/900MHz radio, power prioritization, data logging and mesh networking controller with ADC and thermocouple sensors on board, and let other sensor boards be custom made to fit in the same physical module as the networking controller, or as separate stackable enclosure modules with radio on top and GPS on a 2nd from top side stalk separated at least 1.5 radio wavelengths. An alternative GPS module could have the GPS antenna just stick out minimally to the side, and never be on at the same time as the mesh networking radio transmits, since I doubt receiving would be affected so much by nearby antennas. _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
