I continued the hardware design
I added :
- a switch, to choose between SIMtrace and normal SC reader. the USB
CCID profile could be loaded during boot. VCC can be supplied to power
the SC.
- switches for the SC presence, included in the sockets
- LEDs to show the current mode
(green=reader,yellow=emulator,blue=sniffer,red=MitM)
- transistor array to control the LEDs, SC connections, and I/O line
- line names
- ....
as I'm not an electrician, could someone check if this could work,
resistors/capacitors are missing, ....
here the schema :
https://gsm.tsaitgaist.info/SIMtrac/v0.4/SIMtrac.ps
Kevin
On 24.11.2010 09:17, ml(a)mail.tsaitgaist.info wrote:
To be able to choose between 1.8v (class c) or 3.3v
(class b), there is
a manual switch. The other solution would be to use logic level shifter.
here the drawing :
https://gsm.tsaitgaist.info/SIMtrac/v0.3/SIMtrac.ps
kevin