On Wed, May 2, 2007 2:16 pm, Michael Schippling said: > Perhaps you were looking at the 433Mhz channels which are rather under-represented. I assumed you meant 916Mhz because that's what I use... Probably have to go back to the spec sheet to see if there are more otpions available in the lower freqs. > MS > Yeah, I wasn't thinking and forgot to specify 433 MHz. It's clearer to me now.
The other set of frequencies I have found so far are: CH 1 - 433.02 / 433.09 CH 2 - 433.64 / 433.71 CH 3 - 433.20 / 434.27 CH 4 - 434.71 / 434.78 in transmit/receive pairs. (I have the worst problem with 'i' before 'e' except after 'c'. I keep getting bugs in my code.) I also found: -- The CC1000 uses a digital frequency synthesizer to select a particular send/receive channel. Specific control registers are programmed with values according to the channel and FSK separation used. Because of the nature of the synthesizer, it is only capable of reproducing discrete frequencies in the operating range of the device. The manufacturer provides tools to determine these optimal frequencies and their associated control values, but they are unintuitive and cumbersome to use. The TinyOS stack and related tools take the guesswork out of tuning the CC1000 for the MICA2 series motes. The stack will automatically compute the nearest channel for a given frequency and program the necessary register values (manual tuning), or use pre-determined values from a preset table (preset tuning). In addition, the channelgen tool provides a means to verify the actual channel used by the radio and simplify the generation of new presets. -- I thought it meant that there was a table in the source code, but I can't find the 'preset table' anywhere. I'm also still a little confused by the explanation above. -Ben >>>> Could someone point me to a document that lists the discreet channels on >>>> the >>>> CC1000. I know I've seen something on it at one time, but I can't remember >>>> where, and a search of the archives and Google hasn't turned up what I'm >>>> looking for. >>>> There's just a few listed in the Makefile for Crossbow, and I'd like the >>>> whole list. >>>> Thank you. >>>> -Ben Madore -- The difference between the right word and the almost right word is really a large matter- it's the difference between a lightning bug and the lightning. -Twain _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
