James Tavares ff434e4f12 firmware: bugfix: disable cardemu comms in local SIM mode ...

This change prevents contention on the ISO7816 bus by disabling the card emulation state machine when the SIM switch is in the local mode. Without this change, the card emulation firmware can clobber ISO7816 communications and cause contention with certain (but not all) SIM cards.

Changes:
- Add 'enabled' flag to cardemu instance that is set/cleared by usb_command_sim_select() (the only place where sim switch occurs).
- Flag is initialized as false (disabled) by default, to match local SIM mode default.
- When card emulation is disabled, force SIM VCC to be "OFF",  SIM RESET as "not in RESET", and drop bytes bytes received on the ISO7816 interface (but do service buffers).

Change-Id: I4010f988712eac4a6af8568ccd60062f9de62449

2022-03-11 18:36:06 +00:00

..

include

cardem: Report the VCC voltage (if supported)

2022-02-14 10:18:39 +00:00

source

firmware: bugfix: disable cardemu comms in local SIM mode

2022-03-11 18:36:06 +00:00