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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2009, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
#include "board.h"
#include "simtrace.h"
#ifdef HAVE_CCID
/*------------------------------------------------------------------------------
* Headers
*------------------------------------------------------------------------------*/
#include <string.h>
/*------------------------------------------------------------------------------
* Internal definitions
*------------------------------------------------------------------------------*/
/** Maximum ucSize in bytes of the smartcard answer to a command.*/
#define MAX_ANSWER_SIZE 10
/** Maximum ATR ucSize in bytes.*/
#define MAX_ATR_SIZE 55
/*------------------------------------------------------------------------------
* Internal variables
*------------------------------------------------------------------------------*/
/** ISO7816 pins */
static const Pin pinsISO7816[] = { PINS_ISO7816 };
/** Bus switch pins */
static const Pin pinsBus[] = { PINS_BUS_DEFAULT };
/* SIMcard power pin */
static const Pin pinsPower[] = { PWR_PINS };
/** ISO7816 RST pin */
static const Pin pinIso7816RstMC = PIN_ISO7816_RSTMC;
static uint8_t sim_inserted = 0;
static struct Usart_info usart_info = {
.base = USART_SIM,
.id = ID_USART_SIM,
.state = USART_RCV
};
/*------------------------------------------------------------------------------
* Optional smartcard detection
*------------------------------------------------------------------------------*/
/** Smartcard detection pin.*/
static const Pin pinSmartCard = SMARTCARD_CONNECT_PIN;
/**
* PIO interrupt service routine. Checks if the smartcard has been connected
* or disconnected.
*/
static void ISR_PioSmartCard(const Pin * pPin)
{
/* FIXME: why is pinSmartCard.pio->PIO_ISR the wrong number?
printf("+++++ Trying to check for pending interrupts (PIO ISR: 0x%X)\n\r", pinSmartCard.pio->PIO_ISR);
printf("+++++ Mask: 0x%X\n\r", pinSmartCard.mask);
Output:
+++++ Trying to check for pending interrupts (PIO ISR: 0x400)) = 1<<10
+++++ Mask: 0x100 = 1<<8
*/
// PA10 is DTXD, which is the debug uart transmit pin
printf("Interrupt!!\n\r");
/* Check all pending interrupts */
// FIXME: this if condition is not always true...
// if ( (pinSmartCard.pio->PIO_ISR & pinSmartCard.mask) != 0 )
{
/* Check current level on pin */
if (PIO_Get(&pinSmartCard) == 0) {
sim_inserted = 1;
printf("-I- Smartcard inserted\n\r");
CCID_Insertion();
} else {
sim_inserted = 0;
printf("-I- Smartcard removed\n\r");
CCID_Removal();
}
}
}
/**
* Configures the smartcard detection pin to trigger an interrupt.
*/
static void ConfigureCardDetection(void)
{
printf("+++++ Configure PIOs\n\r");
PIO_Configure(&pinSmartCard, 1);
NVIC_EnableIRQ(PIOA_IRQn);
PIO_EnableIt(&pinSmartCard);
}
/*-----------------------------------------------------------------------------
* Initialization and run
*-----------------------------------------------------------------------------*/
extern CCIDDriverConfigurationDescriptors configurationDescriptorCCID;
/* Called during USB enumeration after device is enumerated by host */
void CCID_configure(void)
{
CCIDDriver_Initialize();
// FIXME: Do we need to set priority?: NVIC_SetPriority( PIOA_IRQn, 10);
PIO_ConfigureIt(&pinSmartCard, ISR_PioSmartCard);
}
/* called when *different* configuration is set by host */
void CCID_exit(void)
{
PIO_DisableIt(&pinSmartCard);
USART_SetTransmitterEnabled(usart_info.base, 0);
USART_SetReceiverEnabled(usart_info.base, 0);
}
/* called when *CCID* configuration is set by host */
void CCID_init(void)
{
uint8_t pAtr[MAX_ATR_SIZE];
uint8_t ucSize;
// FIXME: do we want to print ATR?
/* Initialize Atr buffer */
memset(pAtr, 0, sizeof(pAtr));
ConfigureCardDetection();
// Configure ISO7816 driver
PIO_Configure(pinsISO7816, PIO_LISTSIZE(pinsISO7816));
PIO_Configure(pinsBus, PIO_LISTSIZE(pinsBus));
PIO_Configure(pinsPower, PIO_LISTSIZE(pinsPower));
/* power up the card */
// PIO_Set(&pinsPower[0]);
ISO7816_Init(&usart_info, CLK_MASTER);
USART_SetTransmitterEnabled(usart_info.base, 1);
USART_SetReceiverEnabled(usart_info.base, 1);
ISO7816_Set_Reset_Pin(&pinIso7816RstMC);
/* Read ATR */
ISO7816_warm_reset();
ISO7816_Datablock_ATR(pAtr, &ucSize);
/* Decode ATR and print it */
ISO7816_Decode_ATR(pAtr);
// FIXME. what if smcard is not inserted?
if (PIO_Get(&pinSmartCard) == 0) {
printf("SIM card inserted\n\r");
CCID_Insertion();
}
}
/* main (idle/busy) loop of this USB configuration */
void CCID_run(void)
{
//if (USBD_Read(INT, pBuffer, dLength, fCallback, pArgument);
CCID_SmartCardRequest();
}
#endif
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