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9cb8f504cb
R15 is pulling VCC_SIM down. it has probably been added because a load resistor is present in the FPF2109 datasheet example application, or to not have VCC_SIM in tri-state. since we don't read VCC_SIM it is not important to have it in a defined state. also the card, phone, or simtrace will provide power to the card when required (else the card load is high enough to immediately pull it down). current flowing from the other card pins back to VCC should not happen, and if it happens this high value resistor will not have any effect. this change has been tested with a real device. trace and card emulation worked with a Nokia 3310. Change-Id: I002b1fcf1039c8910d902e476a47183172d70761
Osmocom SIMTRACE ====================================================================== (C) 2010 by Harald Welte <laforge@gnumonks.org> SIMTRACE is a program that can be used for tracing the communication betewen a phone and the SIM card. More generally, it can trace any ISO 7816 based smart card interface. This repository contains a host program 'simtrace' as well as a patch for wireshark. The corresponding device firmware can be found in the openpcd.git repository on git.gnumonks.org.