At first I thought I had to check the interrupt source when my interrupt
handler was called. But then, the smart card insertion pin was never
marked as the interrupt source in the PIO_ISR.
It turns out, the ISR register is cleared on read, which is done by the
atmel lib function PioInterruptHandler.
* ISO7816_Init: Takes Usart_info and CLK_SLAVE/CLK_MASTER as param
* ISO7816_SendChar, ISO7816_GetChar: Usart_info is passed
* ISO7816_Set_Reset_Pin function for CCID part
* iso7816_4.c: BOARD_ISO7816_BASE_USART replaced by USART_SIM
* Redundant _ISO7816_Init, _ISO7816_SendChar, _ISO7816_GetChar
functions removed
* All simtrace modes use iso7816_4.c functions instead of redefined
_ISO7816_xxx functions
* Implemented configure, init, exit functions:
When a configuration is changed, interrupts for reset pins
should be disabled
* Moved variables shared between code files to simtrace.h
