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| 22:56.40 | key2 | is there any open gsm implementation ? Would it be possible to use an ARM9 + transceiver + SIM to connect to a gsm network ? |
| 23:02.48 | p2-mate | afaik there is no open gsm implementation |
| 23:05.59 | key2 | sucks |
| 23:06.18 | key2 | p2-mate: but you think with an ARM9 it would be possible to add a transceiver and make one ? |
| 23:07.03 | p2-mate | hmm |
| 23:07.26 | key2 | ? |
| 23:07.28 | p2-mate | I don't know how much CPU the codec + baseband modulation would take |
| 23:08.07 | key2 | more than 200mhz ? |
| 23:08.20 | key2 | when GSM was created, there was no 200MHZ pc |
| 23:08.21 | key2 | :) |
| 23:08.58 | p2-mate | no, but DSPs or dedicated can do that more efficiently then a 200Mhz ARM9 :) |
| 23:09.10 | p2-mate | s/dedicated/dedicated hw/ |
| 23:09.25 | p2-mate | yes indeed |
| 23:09.44 | p2-mate | maybe you can do it on an arm9. I just don't know |
| 23:12.02 | p2-mate | OTOH it seems most phones still have a DSP next to an ARM |
| 23:22.26 | key2 | dsp for gsm codec ? |
| 23:33.12 | key2 | http://www.analog.com/en/prod/0,2877,AD6720,00.html |
| 23:33.16 | key2 | runs on an ARM7 |
| 23:33.22 | key2 | http://www.ttpcom.com/en/downloads/TTPCom_Cellular_Protocol_Stacks.PDF |
| 23:33.27 | key2 | and that's the stack it uses |
| 23:35.12 | p2-mate | also for the baseband stuff |
| 23:35.41 | p2-mate | euh. it's a DSP and an ARM7 |
| 23:38.07 | key2 | yeah |
| 23:38.09 | key2 | in fact it is |
| 23:38.12 | key2 | i just noticed |
| 23:38.32 | key2 | but could be much cheaper than the GR48 from sony ericson or the telic module (usually 75eur each) |
| 23:39.04 | p2-mate | yeah, probably |
| 23:39.22 | p2-mate | but requires a lot of work to get all the sw working... |
| 23:39.45 | key2 | sw? |