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Harald Welte laforge at gnumonks.orgHi Peter and others, On Sun, Nov 21, 2010 at 08:56:44PM +0100, Peter Stuge wrote: > > - the AT91SAM7SXXX > > I'd use a more modern chip that is simpler to work with; something > like NXP LPC1343 Cortex-M3 with USB or TI Stellaris LM36432 with > 10/100 Ethernet. They're both single supply 3.3V chips. The NXP only > needs five-size passive support components. no, no, no, no ;) There is working firmware (drivers, T=0 sniffing, ...) for the AT91SAM7 now, I put quite a bit of effort into making this work. Furthermore, the AT91SAM7 USART has the unique property that you can use it in T=0 mode but still operate as clock slave, i.e. run as sniffer or card mode, not behaving like a card reader. We really do not need any external logic, simply connect the SIM card to the right pins of the SAM7, load the (gpl licensed, of course) firmware that I wrote and run the equally free software 'simtrace' host program + wireshark. Porting this to a different microcontroller will again require significant development on the software side, which I don't think is what we need... -- - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)