| /* ---------------------------------------------------------------------------- |
| * 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 <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 |
| |
| /** 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 |
| |
| /* WTX (Wait time extension): |
| * R-block PCB begins with (msb) 10 , ends with 000011 for WTX req, 100011 for WTX resp |
| * |
| * The standard says: |
| * Rule 3 β If the card requires more than BWT to process the previously received I-block, it transmits S(WTX |
| * request) where INF conveys one byte encoding an integer multiplier of the BWT value. The interface device |
| * shall acknowledge by S(WTX response) with the same INF. |
| * The time allocated starts at the leading edge of the last character of S(WTX response). |
| */ |
| #define WTX_req 0b10000011 |
| #define WTX_req 0b10100011 |
| // Alternatively: |
| /* For T = 0 Protocol: The firmware on receiving the NULL (0x60) Procedure byte from the card, notifies |
| it to the driver using the RDR_to_PC_DataBlock response. During this period, the reception of bytes |
| from the smart card is still in progress and hence the device cannot indefinitely wait for IN tokens on |
| the USB bulk-in endpoint. Hence, it is required of the driver to readily supply βINβ tokens on the USB |
| bulk-in endpoint. On failure to do so, some of the wait time extension responses, will not be queued to |
| the driver. |
| */ |
| |
| /*------------------------------------------------------------------------------ |
| * Internal variables |
| *------------------------------------------------------------------------------*/ |
| /** USB state: suspend, resume, idle */ |
| unsigned char USBState = STATE_IDLE; |
| |
| /** ISO7816 pins */ |
| static const Pin pinsISO7816_PHONE[] = {PINS_ISO7816_PHONE}; |
| /** Bus switch pins */ |
| //static const Pin pins_bus[] = {PINS_BUS_DEFAULT}; |
| // FIXME: temporary enable bus switch |
| static const Pin pins_bus[] = {PINS_BUS_SNIFF}; |
| |
| /** 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} |
| }; |
| |
| |
| static const Pin pinPhoneRST = PIN_ISO7816_RST_PHONE; |
| |
| #define PR TRACE_INFO |
| |
| /* ===================================================*/ |
| /* Taken from iso7816_4.c */ |
| /* ===================================================*/ |
| /** Flip flop for send and receive char */ |
| #define USART_SEND 0 |
| #define USART_RCV 1 |
| |
| #define NONE 9 |
| #define RST_RCVD 10 |
| #define WAIT_CMD_PHONE 11 |
| #define WAIT_CMD_PC 12 |
| #define WAIT_ATR 13 |
| /*----------------------------------------------------------------------------- |
| * Internal variables |
| *-----------------------------------------------------------------------------*/ |
| /** Variable for state of send and receive froom USART */ |
| static uint8_t StateUsartGlobal = USART_RCV; |
| |
| static uint32_t state; |
| extern uint8_t rcvdChar; |
| |
| extern volatile uint8_t timeout_occured; |
| |
| static rst_cnt = 0; |
| |
| /*----------------------------------------------------------------------------- |
| * Interrupt routines |
| *-----------------------------------------------------------------------------*/ |
| #define RESET 'R' |
| static void ISR_PhoneRST( const Pin *pPin) |
| { |
| printf("+++ Int!! %x\n\r", pinPhoneRST.pio->PIO_ISR); |
| if ( ((pinPhoneRST.pio->PIO_ISR & pinPhoneRST.mask) != 0) ) |
| { |
| if(PIO_Get( &pinPhoneRST ) == 0) { |
| printf(" 0 "); |
| } else { |
| printf(" 1 "); |
| } |
| } |
| state = RST_RCVD; |
| |
| /* if (state == NONE || rst_cnt > 2) { |
| state = RST_RCVD; |
| } |
| rst_cnt++; |
| */ |
| // FIXME: What to do on reset? |
| // FIXME: It seems like the phone is constantly sending a lot of these RSTs |
| // 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: %lu, NACK: %lu, Timeout: %lu, underrun: %lu)\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 ); |
| } |
| |
| void Phone_Master_Init( void ) { |
| |
| PIO_Configure( pinsISO7816_PHONE, PIO_LISTSIZE( pinsISO7816_PHONE ) ) ; |
| PIO_Configure( pins_bus, PIO_LISTSIZE( pins_bus) ) ; |
| |
| Config_PhoneRST_IrqHandler(); |
| |
| _ISO7816_Init(); |
| |
| USART_SetTransmitterEnabled(USART_PHONE, 1); |
| USART_SetReceiverEnabled(USART_PHONE, 1); |
| |
| /* Configure ISO7816 driver */ |
| // FIXME: PIO_Configure(pPwr, PIO_LISTSIZE( pPwr )); |
| |
| state = NONE; |
| |
| |
| // 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++; |
| } |
| */ |
| |
| Timer_Init(); |
| } |
| |
| void send_ATR(uint8_t *ATR, uint8_t status, uint32_t transferred, uint32_t remaining) |
| { |
| int i; |
| PR("Send %x %x %x.. %x", ATR[0], ATR[1], ATR[2], ATR[transferred-1]); |
| for ( i = 0; i < transferred; i++ ) { |
| _ISO7816_SendChar(*(ATR++)); |
| } |
| state = WAIT_CMD_PHONE; |
| } |
| |
| void sendResponse( uint8_t *pArg, uint8_t status, uint32_t transferred, uint32_t remaining) |
| { |
| int i; |
| PR("sendResp, stat: %X, trnsf: %x, rem: %x\n\r", status, transferred, remaining); |
| PR("Resp: %x %x %x .. %x", pArg[0], pArg[1], pArg[2], pArg[transferred-1]); |
| |
| for ( i = 0; i < transferred; i++ ) { |
| _ISO7816_SendChar(*(pArg++)); |
| } |
| /* |
| if (*(pArg-1) == 0x8A) { |
| for (i=0; i<20000; i++) ; |
| _ISO7816_SendChar(0x90); |
| _ISO7816_SendChar(0x00); |
| } |
| */ |
| state = WAIT_CMD_PHONE; |
| } |
| |
| extern ring_buffer buf; |
| #define MAX_MSG_LEN 64 |
| #define PR printf |
| |
| void wait_for_response(uint8_t pBuffer[]) { |
| int ret = 0; |
| // uint8_t msg[] = {0xa0, 0xa4, 0x0, 0x0, 0x2}; |
| if (rcvdChar != 0) { |
| printf(" rr "); |
| /* DATA_IN for host side is data_out for simtrace side */ |
| /* FIXME: Performancewise sending a USB packet for every byte is a disaster */ |
| ret = USBD_Write( PHONE_DATAIN, buf.buf, BUFLEN, 0, 0 ); |
| //USBD_Write( PHONE_DATAIN, msg, BUFLEN, 0, 0 ); |
| PR("b:%x %x %x %x %x.\n\r", buf.buf[0], buf.buf[1],buf.buf[2], buf.buf[3], buf.buf[4]); |
| |
| rcvdChar = 0; |
| } else if (timeout_occured && buf.idx != 0) { |
| printf(" to "); |
| ret = USBD_Write( PHONE_DATAIN, buf.buf, buf.idx, 0, 0 ); |
| timeout_occured = 0; |
| buf.idx = 0; |
| rcvdChar = 0; |
| PR("b:%x %x %x %x %x.\n\r", buf.buf[0], buf.buf[1],buf.buf[2], buf.buf[3], buf.buf[4]); |
| } else { |
| printf("."); |
| return; |
| } |
| if ((ret = USBD_Read(PHONE_DATAOUT, pBuffer, MAX_MSG_LEN, |
| (TransferCallback)&sendResponse, pBuffer)) == USBD_STATUS_SUCCESS) { |
| PR("wait_rsp\n\r"); |
| // state = WAIT_CMD_PC; |
| buf.idx = 0; |
| TC0_Counter_Reset(); |
| } else { |
| PR("USB Err: %X", ret); |
| return; |
| } |
| } |
| |
| // Sniffed Phone to SIM card communication: |
| // phone > sim : RST |
| // phone < sim : ATR |
| // phone > sim : A0 A4 00 00 02 (Select File) |
| // phone < sim : A4 (INS repeated) |
| // phone > sim : 7F 02 (= ??) |
| // phone < sim : 9F 16 (9F: success, can deliver 0x16 (=22) byte) |
| // phone > sim : ?? (A0 C0 00 00 16) |
| // phone < sim : C0 (INS repeated) |
| // phone < sim : 00 00 00 00 7F 20 02 00 00 00 00 00 09 91 00 17 04 00 83 8A (data of length 22 -2) |
| // phone <? sim : 90 00 (OK, everything went fine) |
| // phone ? sim : 00 (??) |
| |
| void Phone_run( void ) |
| { |
| int ret; |
| uint8_t pBuffer[MAX_MSG_LEN]; |
| int msg = RESET; |
| // FIXME: remove: |
| // uint8_t ATR[] = {0x3B, 0x9A, 0x94, 0x00, 0x92, 0x02, 0x75, 0x93, 0x11, 0x00, 0x01, 0x02, 0x02, 0x19}; |
| // send_ATR(ATR, (sizeof(ATR)/sizeof(ATR[0]))); |
| switch (state) { |
| case RST_RCVD: |
| if ((ret = USBD_Write( PHONE_INT, &msg, 1, 0, 0 )) != USBD_STATUS_SUCCESS) { |
| PR("USB Error: %X", ret); |
| } |
| //buf.idx = 0; |
| //rcvdChar = 0; |
| // TC0_Counter_Reset(); |
| // send_ATR sets state to WAIT_CMD |
| if ((ret = USBD_Read(PHONE_DATAOUT, pBuffer, MAX_MSG_LEN, (TransferCallback)&send_ATR, pBuffer)) == USBD_STATUS_SUCCESS) { |
| PR("Reading started sucessfully (ATR)"); |
| state = WAIT_ATR; |
| } else { |
| // PR("USB Error: %X", ret); |
| //FIXME: state = ERR; |
| } |
| break; |
| case WAIT_CMD_PHONE: |
| // FIXME: TC0_Counter_Reset(); |
| wait_for_response(pBuffer); |
| break; |
| case NONE: |
| break; |
| default: |
| // PR(":("); |
| break; |
| } |
| |
| // FIXME: Function Phone_run not implemented yet |
| |
| /* Send and receive chars */ |
| // ISO7816_GetChar(&rcv_char); |
| // ISO7816_SendChar(char_to_send); |
| } |