From e8119112cbca09900eca9e6665616e283e23e9c0 Mon Sep 17 00:00:00 2001 From: Christina Quast Date: Tue, 20 Jan 2015 20:15:04 +0100 Subject: [PATCH] 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. --- sam3s_example/mains/phone_test.c | 341 +++++++++++++++++++++++++++++++ 1 file changed, 341 insertions(+) create mode 100644 sam3s_example/mains/phone_test.c diff --git a/sam3s_example/mains/phone_test.c b/sam3s_example/mains/phone_test.c new file mode 100644 index 00000000..b5f35652 --- /dev/null +++ b/sam3s_example/mains/phone_test.c @@ -0,0 +1,341 @@ +/* ---------------------------------------------------------------------------- + * 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} +}; + +#ifdef BOARD_ISO7816_BASE_USART +#undef BOARD_ISO7816_BASE_USART +#define BOARD_ISO7816_BASE_USART USART1 +#endif + +#ifdef BOARD_ISO7816_ID_USART +#undef BOARD_ISO7816_ID_USART +#define BOARD_ISO7816_ID_USART ID_USART1 +#endif + +#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 uint8_t char_avail = 0; + + +/*----------------------------------------------------------------------------- + * Interrupt routines + *-----------------------------------------------------------------------------*/ +void USART1_IrqHandler( void ) +{ + uint32_t stat; + + stat = BOARD_USART_BASE->US_CSR; + TRACE_DEBUG("stat: 0x%x, imask: 0x%x", stat, USART1->US_IMR); + + // Rcv buf full +/* if((stat & US_CSR_RXBUFF) == US_CSR_RXBUFF) { + TRACE_DEBUG("Rcv buf full"); + USART_DisableIt(USART1, US_IDR_RXBUFF); + } +*/ + char_avail = 1; +} + +static void ISR_PhoneRST( const Pin *pPin) +{ + printf("+++++++++ Interrupt!! %x\n\r", pinPhoneRST.pio->PIO_ISR); +} + +static void Config_PhoneRST_IrqHandler() +{ + PIO_Configure( &pinPhoneRST, 1); +// PIO_Configure( &pinPhoneClk, 1); + NVIC_EnableIRQ( PIOA_IRQn ); + PIO_ConfigureIt( &pinPhoneRST, ISR_PhoneRST ) ; +// PIO_ConfigureIt( &pinPhoneClk, ISR_PhoneRST ) ; + PIO_EnableIt( &pinPhoneRST ) ; +// PIO_EnableIt( &pinPhoneClk ) ; +} + +/** + * Get a character from ISO7816 + * \param pCharToReceive Pointer for store the received char + * \return 0: if timeout else status of US_CSR + */ +static uint32_t ISO7816_GetChar( uint8_t *pCharToReceive ) +{ + uint32_t status; + uint32_t timeout=0; + + if( StateUsartGlobal == USART_SEND ) { + while((BOARD_ISO7816_BASE_USART->US_CSR & US_CSR_TXEMPTY) == 0) {} + BOARD_ISO7816_BASE_USART->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; + StateUsartGlobal = USART_RCV; + } + + /* Wait USART ready for reception */ + while( ((BOARD_ISO7816_BASE_USART->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 = ((BOARD_ISO7816_BASE_USART->US_RHR) & 0xFF); + + status = (BOARD_ISO7816_BASE_USART->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", BOARD_ISO7816_BASE_USART->US_CSR); + TRACE_DEBUG("Nb:0x%X\n\r", BOARD_ISO7816_BASE_USART->US_NER ); + BOARD_ISO7816_BASE_USART->US_CR = US_CR_RSTSTA; + } + + /* Return status */ + return( status ); +} + +/** Initializes a ISO driver + * \param pPinIso7816RstMC Pin ISO 7816 Rst MC + */ +void _ISO7816_Init( const Pin pPinIso7816RstMC ) +{ + TRACE_DEBUG("ISO_Init\n\r"); + + /* Pin ISO7816 initialize */ + st_pinIso7816RstMC = pPinIso7816RstMC; + + USART_Configure( BOARD_ISO7816_BASE_USART, + 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) + */ + BOARD_ISO7816_BASE_USART->US_FIDI = 372; + BOARD_ISO7816_BASE_USART->US_BRGR = US_BRGR_CD(1); + + /* Configure USART */ + PMC_EnablePeripheral(BOARD_ISO7816_ID_USART); + + /* enable USART1 interrupt */ + NVIC_EnableIRQ( USART1_IRQn ) ; + + USART_SetTransmitterEnabled(BOARD_ISO7816_BASE_USART, 1); + USART_SetReceiverEnabled(BOARD_ISO7816_BASE_USART, 1); + +} + +/*------------------------------------------------------------------------------ + * USB + *------------------------------------------------------------------------------*/ + +// FIXME: Implement those two functions +//------------------------------------------------------------------------------ +/// Put the CPU in 32kHz, disable PLL, main oscillator +/// Put voltage regulator in standby mode +//------------------------------------------------------------------------------ +void LowPowerMode(void) +{ +// FIXME: Implement low power consumption mode? +// PMC_CPUInIdleMode(); +} +//------------------------------------------------------------------------------ +/// Put voltage regulator in normal mode +/// Return the CPU to normal speed 48MHz, enable PLL, main oscillator +//------------------------------------------------------------------------------ +void NormalPowerMode(void) +{ +} + + +/*------------------------------------------------------------------------------ + * Main + *------------------------------------------------------------------------------*/ + +/** + * Initializes the DBGU and ISO7816 driver, and starts some tests. + * \return Unused (ANSI-C compatibility) + */ +extern int main( void ) +{ + uint8_t pAtr[MAX_ATR_SIZE] ; + uint8_t ucSize ; + static uint8_t buff[100]; + + LED_Configure(LED_NUM_GREEN); + LED_Set(LED_NUM_GREEN); + + /* Disable watchdog*/ + WDT_Disable( WDT ) ; + + PIO_InitializeInterrupts(0); + + /* Configure ISO7816 driver */ + PIO_Configure( pinsISO7816_PHONE, PIO_LISTSIZE( &pinsISO7816_PHONE ) ) ; + PIO_Configure(pPwr, PIO_LISTSIZE(pPwr)); + +// FIXME: RST seems to be allways high + TRACE_DEBUG("******* Reset State4 (1 if the Pin RstMC is high): 0x%X", ISO7816_StatusReset()); + //SendReceiveCommands() ; + _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 ); + + Config_PhoneRST_IrqHandler(); + + +// USART_EnableIt( USART1, US_IER_RXRDY) ; + //USART_EnableIt( USART1, 0xffff) ; + // 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++; + } +*/ + + // Infinite loop + while (1) { + +/* if( USBState == STATE_SUSPEND ) { + TRACE_DEBUG("suspend !\n\r"); + LowPowerMode(); + USBState = STATE_IDLE; + } + if( USBState == STATE_RESUME ) { + // Return in normal MODE + TRACE_DEBUG("resume !\n\r"); + NormalPowerMode(); + USBState = STATE_IDLE; + } + CCID_SmartCardRequest(); +*/ + int j; + for( j=0; j < 100; j++ ) { + // ISO7816_GetChar(&buff[j++]); + } + // printf("1 "); + for( j=0; j < 100; j++ ) { + /* printf("0x%x ", buff[j++]); + if ((j % 40)==0) { + printf("\n\r"); + } + */ + } +// printf("2\n\r"); + //ISO7816_GetChar(&buff[0]); + //printf("buf: 0x%x\n\r", buff[0]); + + /*if (char_avail == 1) { + ISO7816_GetChar(&buff[0]); + char_avail = 0; + }*/ + } + return 0 ; +}