/* ---------------------------------------------------------------------------- * 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. * ---------------------------------------------------------------------------- */ /*------------------------------------------------------------------------------ * Headers *------------------------------------------------------------------------------*/ #include "board.h" #include /*------------------------------------------------------------------------------ * 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 /** USB states */ /// Use for power management #define STATE_IDLE 0 /// The USB device is in suspend state #define STATE_SUSPEND 4 /// The USB device is in resume state #define STATE_RESUME 5 /*------------------------------------------------------------------------------ * Internal variables *------------------------------------------------------------------------------*/ /** USB state: suspend, resume, idle */ unsigned char USBState = STATE_IDLE; /** ISO7816 pins */ static const Pin pinsISO7816_PHONE[] = {PINS_ISO7816_PHONE}; /** ISO7816 RST pin */ static const Pin pinIso7816RstMC = PIN_ISO7816_RST_PHONE; static uint8_t sim_inserted = 0; static const Pin pPwr[] = { /* Enable power converter 4.5-6V to 3.3V; low: off */ {SIM_PWEN, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}, /* Enable second power converter: VCC_PHONE to VCC_SIM; high: off */ {VCC_FWD, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT} }; #define ISO7816_PHONE_RST {PIO_PA24, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP | PIO_DEBOUNCE | PIO_DEGLITCH | PIO_IT_EDGE } static const Pin pinPhoneRST = ISO7816_PHONE_RST; //#define ISO7816_PHONE_CLK {PIO_PA23A_SCK1, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP | PIO_DEBOUNCE | PIO_DEGLITCH | PIO_IT_EDGE } //static const Pin pinPhoneClk = ISO7816_PHONE_CLK; /* ===================================================*/ /* Taken from iso7816_4.c */ /* ===================================================*/ /** Flip flop for send and receive char */ #define USART_SEND 0 #define USART_RCV 1 /*----------------------------------------------------------------------------- * Internal variables *-----------------------------------------------------------------------------*/ /** Variable for state of send and receive froom USART */ static uint8_t StateUsartGlobal = USART_RCV; /** Pin reset master card */ static Pin st_pinIso7816RstMC; static uint32_t char_stat = 0; static char rcvdChar = 0; /*----------------------------------------------------------------------------- * Interrupt routines *-----------------------------------------------------------------------------*/ /* * char_stat is zero if no error occured. * Otherwise it is filled with the content of the status register. */ void USART1_IrqHandler( void ) { uint32_t stat; char_stat = 0; // Rcv buf full /* if((stat & US_CSR_RXBUFF) == US_CSR_RXBUFF) { TRACE_DEBUG("Rcv buf full"); USART_DisableIt(USART1, US_IDR_RXBUFF); } */ uint32_t csr = USART_PHONE->US_CSR; // printf(".\n\r"); if (csr & US_CSR_TXRDY) { /* transmit buffer empty, nothing to transmit */ } if (csr & US_CSR_RXRDY) { stat = (csr&(US_CSR_OVRE|US_CSR_FRAME| US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK| (1<<10))); if (stat == 0 ) { /* Get a char */ rcvdChar = ((USART_PHONE->US_RHR) & 0xFF); } /* else: error occured */ char_stat = stat; } } static void ISR_PhoneRST( const Pin *pPin) { TRACE_DEBUG("+++++++++ Interrupt!! ISR:0x%x, CSR:0x%x\n\r", pinPhoneRST.pio->PIO_ISR, USART1->US_CSR); phone_state = SEND_ATR; PIO_DisableIt( &pinPhoneRST ) ; } static void Config_PhoneRST_IrqHandler() { PIO_Configure( &pinPhoneRST, 1); // PIO_Configure( &pinPhoneClk, 1); PIO_ConfigureIt( &pinPhoneRST, ISR_PhoneRST ) ; // PIO_ConfigureIt( &pinPhoneClk, ISR_PhoneRST ) ; PIO_EnableIt( &pinPhoneRST ) ; // PIO_EnableIt( &pinPhoneClk ) ; NVIC_EnableIRQ( PIOA_IRQn ); } /** * Get a character from ISO7816 * \param pCharToReceive Pointer for store the received char * \return 0: if timeout else status of US_CSR */ /* FIXME: This code is taken from cciddriver.c --> Reuse the code!!! */ uint32_t _ISO7816_GetChar( uint8_t *pCharToReceive ) { uint32_t status; uint32_t timeout=0; TRACE_DEBUG("--"); if( StateUsartGlobal == USART_SEND ) { while((USART_PHONE->US_CSR & US_CSR_TXEMPTY) == 0) {} USART_PHONE->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; StateUsartGlobal = USART_RCV; } /* Wait USART ready for reception */ while( ((USART_PHONE->US_CSR & US_CSR_RXRDY) == 0) ) { if(timeout++ > 12000 * (BOARD_MCK/1000000)) { TRACE_DEBUG("TimeOut\n\r"); return( 0 ); } } /* At least one complete character has been received and US_RHR has not yet been read. */ /* Get a char */ *pCharToReceive = ((USART_PHONE->US_RHR) & 0xFF); status = (USART_PHONE->US_CSR&(US_CSR_OVRE|US_CSR_FRAME| US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK| (1<<10))); if (status != 0 ) { TRACE_DEBUG("R:0x%X\n\r", status); TRACE_DEBUG("R:0x%X\n\r", USART_PHONE->US_CSR); TRACE_DEBUG("Nb:0x%X\n\r", USART_PHONE->US_NER ); USART_PHONE->US_CR = US_CR_RSTSTA; } /* Return status */ return( status ); } /** * Send a char to ISO7816 * \param CharToSend char to be send * \return status of US_CSR */ uint32_t _ISO7816_SendChar( uint8_t CharToSend ) { uint32_t status; TRACE_DEBUG("********** Send char: %c (0x%X)\n\r", CharToSend, CharToSend); if( StateUsartGlobal == USART_RCV ) { USART_PHONE->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; StateUsartGlobal = USART_SEND; } /* Wait USART ready for transmit */ while((USART_PHONE->US_CSR & US_CSR_TXRDY) == 0) {} /* There is no character in the US_THR */ /* Transmit a char */ USART_PHONE->US_THR = CharToSend; status = (USART_PHONE->US_CSR&(US_CSR_OVRE|US_CSR_FRAME| US_CSR_PARE|US_CSR_TIMEOUT|US_CSR_NACK| (1<<10))); if (status != 0 ) { TRACE_DEBUG("******* status: 0x%X (Overrun: %d, NACK: %d, Timeout: %d, underrun: %d)\n\r", status, ((status & US_CSR_OVRE)>> 5), ((status & US_CSR_NACK) >> 13), ((status & US_CSR_TIMEOUT) >> 8), ((status & (1 << 10)) >> 10)); TRACE_DEBUG("E (USART CSR reg):0x%X\n\r", USART_PHONE->US_CSR); TRACE_DEBUG("Nb (Number of errors):0x%X\n\r", USART_PHONE->US_NER ); USART_PHONE->US_CR = US_CR_RSTSTA; } /* Return status */ return( status ); } /** Initializes a ISO driver * \param pPinIso7816RstMC Pin ISO 7816 Rst MC */ // FIXME: This function is implemented in iso7816_4.c !! Only MCK instead of SCK is always taken. Change that! void _ISO7816_Init( const Pin pPinIso7816RstMC ) { TRACE_DEBUG("ISO_Init\n\r"); /* Pin ISO7816 initialize */ st_pinIso7816RstMC = pPinIso7816RstMC; USART_Configure( USART_PHONE, US_MR_USART_MODE_IS07816_T_0 // Nope, we aren't master: // | US_MR_USCLKS_MCK | US_MR_USCLKS_SCK | US_MR_NBSTOP_1_BIT | US_MR_PAR_EVEN | US_MR_CHRL_8_BIT | US_MR_CLKO /** TODO: This field was set in the original simtrace firmware..why? */ | (3<<24), /* MAX_ITERATION */ 1, 0); /* SYNC = 0 (async mode) OVER = 0 (oversampling by 8?) FIDI = 372 (default val on startup before other value is negotiated) USCLKS = 3 (Select SCK as input clock) --> US_MR_USCLKS_SCK CD = 1 ? --> US_BRGR_CD(1) */ USART_PHONE->US_FIDI = 372; // USART_PHONE->US_IDR = (uint32_t) -1; USART_PHONE->US_BRGR = US_BRGR_CD(1); // USART_PHONE->US_BRGR = BOARD_MCK / (372*9600); USART_PHONE->US_TTGR = 5; /* Configure USART */ PMC_EnablePeripheral(ID_USART_PHONE); USART1->US_IDR = 0xffffffff; USART_EnableIt( USART1, US_IER_RXRDY) ; /* enable USART1 interrupt */ NVIC_EnableIRQ( USART1_IRQn ) ; // USART_PHONE->US_IER = US_IER_RXRDY | US_IER_OVRE | US_IER_FRAME | US_IER_PARE | US_IER_NACK | US_IER_ITER; USART_SetTransmitterEnabled(USART_PHONE, 1); USART_SetReceiverEnabled(USART_PHONE, 1); } void Phone_Master_Init( void ) { PIO_Configure( pinsISO7816_PHONE, PIO_LISTSIZE( pinsISO7816_PHONE ) ) ; Config_PhoneRST_IrqHandler(); _ISO7816_Init(pinIso7816RstMC); // FIXME: Or do I need to call VBUS_CONFIGURE() here instead, which will call USBD_Connect() later? // USBD_Connect(); // FIXME: USB clock? USB PMC? // NVIC_EnableIRQ( UDP_IRQn ); // USART_EnableIt( USART_PHONE, US_IER_RXRDY) ; // FIXME: At some point USBD_IrqHandler() should get called and set USBD_STATE_CONFIGURED /* while (USBD_GetState() < USBD_STATE_CONFIGURED) { int i = 1; if ((i%10000) == 0) { TRACE_DEBUG("%d: USB State: %x\n\r", i, USBD_GetState()); } i++; } */ }