mirror of https://gerrit.osmocom.org/simtrace2
sniffer functions
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Christina Quast
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995e0d1319
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a90eefa865
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2009, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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/*------------------------------------------------------------------------------
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* Headers
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*------------------------------------------------------------------------------*/
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#include "board.h"
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#include <string.h>
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/*------------------------------------------------------------------------------
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* Internal definitions
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*------------------------------------------------------------------------------*/
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/** Maximum ucSize in bytes of the smartcard answer to a command.*/
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#define MAX_ANSWER_SIZE 10
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/** Maximum ATR ucSize in bytes.*/
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#define MAX_ATR_SIZE 55
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/* Sniffer configuration */
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#ifdef PIN_SC_SW
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#undef PIN_SC_SW
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#endif
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#define PIN_SC_SW {PIO_PA20, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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#ifdef PIN_IO_SW
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#undef PIN_IO_SW
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#endif
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#define PIN_IO_SW {PIO_PA19, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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#define PINS_BUS PIN_SC_SW, PIN_IO_SW
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#define PINS_SIM_SNIFF_SIM PIN_PHONE_IO, PIN_PHONE_CLK
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/*------------------------------------------------------------------------------
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* Internal variables
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*------------------------------------------------------------------------------*/
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/** ISO7816 pins */
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static const Pin pinsISO7816_sniff[] = {PINS_SIM_SNIFF_SIM};
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static const Pin pins_bus[] = {PINS_BUS};
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static const Pin pPwr[] = {
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/* Enable power converter 4.5-6V to 3.3V; low: off */
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{SIM_PWEN, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT},
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/* Enable second power converter: VCC_PHONE to VCC_SIM; high: off */
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{VCC_FWD, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT}
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};
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uint32_t char_stat = 0;
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uint8_t rcvdChar = 0;
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/*-----------------------------------------------------------------------------
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* Interrupt routines
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*-----------------------------------------------------------------------------*/
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/*
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* Initializes rcvdChar with the char received on USART interface
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* char_stat is zero if no error occured.
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* Otherwise it is filled with the content of the status register.
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*/
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void USART1_IrqHandler( void )
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{
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uint32_t stat;
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char_stat = 0;
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// Rcv buf full
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/* if((stat & US_CSR_RXBUFF) == US_CSR_RXBUFF) {
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TRACE_DEBUG("Rcv buf full");
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USART_DisableIt(USART1, US_IDR_RXBUFF);
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}
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*/
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uint32_t csr = USART_PHONE->US_CSR;
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if (csr & US_CSR_TXRDY) {
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/* transmit buffer empty, nothing to transmit */
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}
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if (csr & US_CSR_RXRDY) {
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stat = (csr&(US_CSR_OVRE|US_CSR_FRAME|
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US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK|
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(1<<10)));
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if (stat == 0 ) {
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/* Get a char */
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rcvdChar = ((USART_PHONE->US_RHR) & 0xFF);
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} /* else: error occured */
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char_stat = stat;
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}
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}
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/** Initializes a ISO driver
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* \param pPinIso7816RstMC Pin ISO 7816 Rst MC
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*/
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void _ISO7816_Init( )
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{
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TRACE_DEBUG("ISO_Init\n\r");
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USART_Configure( USART_PHONE,
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US_MR_USART_MODE_IS07816_T_0
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// Nope, we aren't master:
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// | US_MR_USCLKS_MCK
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| US_MR_USCLKS_SCK
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| US_MR_NBSTOP_1_BIT
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| US_MR_PAR_EVEN
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| US_MR_CHRL_8_BIT
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| US_MR_CLKO /** TODO: This field was set in the original simtrace firmware..why? */
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| (3<<24), /* MAX_ITERATION */
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1,
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0);
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/*
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SYNC = 0 (async mode)
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OVER = 0 (oversampling by 8?)
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FIDI = 372 (default val on startup before other value is negotiated)
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USCLKS = 3 (Select SCK as input clock) --> US_MR_USCLKS_SCK
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CD = 1 ? --> US_BRGR_CD(1)
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*/
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USART_PHONE->US_FIDI = 372;
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USART_PHONE->US_BRGR = US_BRGR_CD(1);
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// USART_PHONE->US_BRGR = BOARD_MCK / (372*9600);
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USART_PHONE->US_TTGR = 5;
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/* Configure USART */
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PMC_EnablePeripheral(ID_USART_PHONE);
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USART1->US_IDR = 0xffffffff;
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USART_EnableIt( USART1, US_IER_RXRDY) ;
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/* enable USART1 interrupt */
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NVIC_EnableIRQ( USART1_IRQn ) ;
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// USART_PHONE->US_IER = US_IER_RXRDY | US_IER_OVRE | US_IER_FRAME | US_IER_PARE | US_IER_NACK | US_IER_ITER;
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USART_SetReceiverEnabled(USART_PHONE, 1);
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}
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void Sniffer_Init( void )
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{
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/* Configure ISO7816 driver */
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PIO_Configure( pinsISO7816_sniff, PIO_LISTSIZE( pinsISO7816_sniff ) ) ;
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PIO_Configure( pins_bus, PIO_LISTSIZE( pins_bus) ) ;
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PIO_Configure(pPwr, PIO_LISTSIZE( pPwr ));
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_ISO7816_Init( );
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}
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