Marcin,
On Fri, Feb 18, 2011 at 12:46:23PM +0200, Marcin.Mielczarczyk(a)tieto.com wrote:
If anyone else
feels interested to dive into it, feel free to do so.
Especially the RF transceiver driver, TDMA timer driver, etc. should all be
possible to develop right now based on the documentation that is available.
I'm gonna dive into this topic.
That's something where I don't have experience so it'll take me some time to
understand it, but it's worth effort.
I'm happy to hear this. The problem sort-of is: Do you have the kind of
measurement equipment to facilitate that kind of development? In order to
e.g. test the VCO/PLL / Transmit code, you would have to have something like
a spectrum analyzer or a scope that can go up to at least the GSM900, preferrably
up into 1800/1900 MHz.
If you want to test the receive side, something like a GSM signal generator (HP
8922, Racal 6103, R&S CMD 55) would be great, as they can transmit a well-known
bit pattern (all-1, all-0, 101010101010 and the like) on a configured ARFCN,
then configure the RF Transceiver (MT61400 and you can watch the analog
baseband signal on an oscilloscope and determine if it mathes the expected singal.
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org>
http://laforge.gnumonks.org/
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