mirror of https://gerrit.osmocom.org/simtrace2
IRQ when phone RST line triggered
When the SIM card adapter, which is usually plugged into a phone, is plugged into a CCID reader instead, the CCID reader triggers the reset line of the RST line and therefore a PIO interrupt. The reader then waits for an ATR from the smartcard, which should be send next.
This commit is contained in:
Christina Quast
parent
8d0f4a6675
commit
e8119112cb
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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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/** USB states */
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/// Use for power management
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#define STATE_IDLE 0
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/// The USB device is in suspend state
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#define STATE_SUSPEND 4
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/// The USB device is in resume state
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#define STATE_RESUME 5
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/*------------------------------------------------------------------------------
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* Internal variables
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*------------------------------------------------------------------------------*/
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/** USB state: suspend, resume, idle */
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unsigned char USBState = STATE_IDLE;
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/** ISO7816 pins */
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static const Pin pinsISO7816_PHONE[] = {PINS_ISO7816_PHONE};
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/** ISO7816 RST pin */
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static const Pin pinIso7816RstMC = PIN_ISO7816_RST_PHONE;
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static uint8_t sim_inserted = 0;
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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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#ifdef BOARD_ISO7816_BASE_USART
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#undef BOARD_ISO7816_BASE_USART
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#define BOARD_ISO7816_BASE_USART USART1
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#endif
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#ifdef BOARD_ISO7816_ID_USART
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#undef BOARD_ISO7816_ID_USART
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#define BOARD_ISO7816_ID_USART ID_USART1
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#endif
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#define ISO7816_PHONE_RST {PIO_PA24, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP | PIO_DEBOUNCE | PIO_DEGLITCH | PIO_IT_EDGE }
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static const Pin pinPhoneRST = ISO7816_PHONE_RST;
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#define ISO7816_PHONE_CLK {PIO_PA23A_SCK1, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP | PIO_DEBOUNCE | PIO_DEGLITCH | PIO_IT_EDGE }
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static const Pin pinPhoneClk = ISO7816_PHONE_CLK;
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/* ===================================================*/
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/* Taken from iso7816_4.c */
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/* ===================================================*/
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/** Flip flop for send and receive char */
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#define USART_SEND 0
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#define USART_RCV 1
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/*-----------------------------------------------------------------------------
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* Internal variables
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*-----------------------------------------------------------------------------*/
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/** Variable for state of send and receive froom USART */
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static uint8_t StateUsartGlobal = USART_RCV;
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/** Pin reset master card */
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static Pin st_pinIso7816RstMC;
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static uint8_t char_avail = 0;
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/*-----------------------------------------------------------------------------
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* Interrupt routines
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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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stat = BOARD_USART_BASE->US_CSR;
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TRACE_DEBUG("stat: 0x%x, imask: 0x%x", stat, USART1->US_IMR);
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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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char_avail = 1;
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}
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static void ISR_PhoneRST( const Pin *pPin)
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{
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printf("+++++++++ Interrupt!! %x\n\r", pinPhoneRST.pio->PIO_ISR);
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}
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static void Config_PhoneRST_IrqHandler()
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{
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PIO_Configure( &pinPhoneRST, 1);
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// PIO_Configure( &pinPhoneClk, 1);
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NVIC_EnableIRQ( PIOA_IRQn );
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PIO_ConfigureIt( &pinPhoneRST, ISR_PhoneRST ) ;
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// PIO_ConfigureIt( &pinPhoneClk, ISR_PhoneRST ) ;
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PIO_EnableIt( &pinPhoneRST ) ;
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// PIO_EnableIt( &pinPhoneClk ) ;
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}
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/**
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* Get a character from ISO7816
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* \param pCharToReceive Pointer for store the received char
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* \return 0: if timeout else status of US_CSR
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*/
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static uint32_t ISO7816_GetChar( uint8_t *pCharToReceive )
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{
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uint32_t status;
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uint32_t timeout=0;
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if( StateUsartGlobal == USART_SEND ) {
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while((BOARD_ISO7816_BASE_USART->US_CSR & US_CSR_TXEMPTY) == 0) {}
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BOARD_ISO7816_BASE_USART->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK;
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StateUsartGlobal = USART_RCV;
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}
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/* Wait USART ready for reception */
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while( ((BOARD_ISO7816_BASE_USART->US_CSR & US_CSR_RXRDY) == 0) ) {
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if(timeout++ > 12000 * (BOARD_MCK/1000000)) {
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TRACE_DEBUG("TimeOut\n\r");
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return( 0 );
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}
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}
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/* At least one complete character has been received and US_RHR has not yet been read. */
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/* Get a char */
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*pCharToReceive = ((BOARD_ISO7816_BASE_USART->US_RHR) & 0xFF);
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status = (BOARD_ISO7816_BASE_USART->US_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 (status != 0 ) {
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TRACE_DEBUG("R:0x%X\n\r", status);
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TRACE_DEBUG("R:0x%X\n\r", BOARD_ISO7816_BASE_USART->US_CSR);
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TRACE_DEBUG("Nb:0x%X\n\r", BOARD_ISO7816_BASE_USART->US_NER );
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BOARD_ISO7816_BASE_USART->US_CR = US_CR_RSTSTA;
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}
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/* Return status */
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return( status );
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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( const Pin pPinIso7816RstMC )
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{
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TRACE_DEBUG("ISO_Init\n\r");
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/* Pin ISO7816 initialize */
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st_pinIso7816RstMC = pPinIso7816RstMC;
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USART_Configure( BOARD_ISO7816_BASE_USART,
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US_MR_USART_MODE_IS07816_T_0
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// Nope, we aren't master: | 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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BOARD_ISO7816_BASE_USART->US_FIDI = 372;
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BOARD_ISO7816_BASE_USART->US_BRGR = US_BRGR_CD(1);
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/* Configure USART */
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PMC_EnablePeripheral(BOARD_ISO7816_ID_USART);
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/* enable USART1 interrupt */
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NVIC_EnableIRQ( USART1_IRQn ) ;
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USART_SetTransmitterEnabled(BOARD_ISO7816_BASE_USART, 1);
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USART_SetReceiverEnabled(BOARD_ISO7816_BASE_USART, 1);
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}
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/*------------------------------------------------------------------------------
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* USB
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*------------------------------------------------------------------------------*/
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// FIXME: Implement those two functions
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//------------------------------------------------------------------------------
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/// Put the CPU in 32kHz, disable PLL, main oscillator
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/// Put voltage regulator in standby mode
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//------------------------------------------------------------------------------
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void LowPowerMode(void)
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{
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// FIXME: Implement low power consumption mode?
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// PMC_CPUInIdleMode();
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}
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//------------------------------------------------------------------------------
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/// Put voltage regulator in normal mode
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/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator
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//------------------------------------------------------------------------------
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void NormalPowerMode(void)
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{
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}
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/*------------------------------------------------------------------------------
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* Main
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*------------------------------------------------------------------------------*/
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/**
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* Initializes the DBGU and ISO7816 driver, and starts some tests.
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* \return Unused (ANSI-C compatibility)
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*/
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extern int main( void )
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{
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uint8_t pAtr[MAX_ATR_SIZE] ;
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uint8_t ucSize ;
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static uint8_t buff[100];
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LED_Configure(LED_NUM_GREEN);
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LED_Set(LED_NUM_GREEN);
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/* Disable watchdog*/
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WDT_Disable( WDT ) ;
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PIO_InitializeInterrupts(0);
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/* Configure ISO7816 driver */
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PIO_Configure( pinsISO7816_PHONE, PIO_LISTSIZE( &pinsISO7816_PHONE ) ) ;
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PIO_Configure(pPwr, PIO_LISTSIZE(pPwr));
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// FIXME: RST seems to be allways high
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TRACE_DEBUG("******* Reset State4 (1 if the Pin RstMC is high): 0x%X", ISO7816_StatusReset());
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//SendReceiveCommands() ;
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_ISO7816_Init(pinIso7816RstMC);
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// FIXME: Or do I need to call VBUS_CONFIGURE() here instead, which will call USBD_Connect() later?
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// USBD_Connect();
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// FIXME: USB clock? USB PMC?
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NVIC_EnableIRQ( UDP_IRQn );
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Config_PhoneRST_IrqHandler();
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// USART_EnableIt( USART1, US_IER_RXRDY) ;
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//USART_EnableIt( USART1, 0xffff) ;
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// FIXME: At some point USBD_IrqHandler() should get called and set USBD_STATE_CONFIGURED
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/* while (USBD_GetState() < USBD_STATE_CONFIGURED) {
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int i = 1;
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if ((i%10000) == 0) {
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TRACE_DEBUG("%d: USB State: %x\n\r", i, USBD_GetState());
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}
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i++;
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}
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*/
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// Infinite loop
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while (1) {
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/* if( USBState == STATE_SUSPEND ) {
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TRACE_DEBUG("suspend !\n\r");
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LowPowerMode();
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USBState = STATE_IDLE;
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}
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if( USBState == STATE_RESUME ) {
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// Return in normal MODE
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TRACE_DEBUG("resume !\n\r");
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NormalPowerMode();
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USBState = STATE_IDLE;
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}
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CCID_SmartCardRequest();
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*/
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int j;
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for( j=0; j < 100; j++ ) {
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// ISO7816_GetChar(&buff[j++]);
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}
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// printf("1 ");
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for( j=0; j < 100; j++ ) {
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/* printf("0x%x ", buff[j++]);
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if ((j % 40)==0) {
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printf("\n\r");
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}
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*/
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}
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// printf("2\n\r");
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//ISO7816_GetChar(&buff[0]);
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//printf("buf: 0x%x\n\r", buff[0]);
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/*if (char_avail == 1) {
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ISO7816_GetChar(&buff[0]);
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char_avail = 0;
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}*/
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}
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return 0 ;
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}
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