| #include "board.h" |
| #include "card_emu.h" |
| #include "iso7816_fidi.h" |
| #include "utils.h" |
| |
| #define TRACE_ENTRY() TRACE_DEBUG("%s entering\n", __func__) |
| |
| static const Pin pins_cardsim[] = PINS_CARDSIM; |
| |
| /* UART pins */ |
| static const Pin pins_usim1[] = {PINS_USIM1}; |
| static const Pin pin_usim1_rst = PIN_USIM1_nRST; |
| static const Pin pin_usim1_vcc = PIN_USIM1_VCC; |
| |
| #ifdef CARDEMU_SECOND_UART |
| static const Pin pins_usim2[] = {PINS_USIM1}; |
| static const Pin pin_usim2_rst = PIN_USIM2_nRST; |
| static const Pin pin_usim2_vcc = PIN_USIM2_VCC; |
| #endif |
| |
| static struct card_handle *ch1, *ch2; |
| static struct ringbuf ch1_rb; |
| |
| static struct Usart_info usart_info[] = { |
| { |
| .base = USART1, |
| .id = ID_USART1, |
| .state = USART_RCV |
| }, |
| #ifdef CARDEMU_SECOND_UART |
| { |
| .base = USART0, |
| .id = ID_USART0, |
| .state = USART_RCV |
| }, |
| #endif |
| }; |
| |
| static Usart *get_usart_by_chan(uint8_t uart_chan) |
| { |
| switch (uart_chan) { |
| case 0: |
| return USART1; |
| #ifdef CARDEMU_SECOND_UART |
| case 1: |
| return USART0; |
| #endif |
| } |
| return NULL; |
| } |
| |
| /*********************************************************************** |
| * Call-Backs from card_emu.c |
| ***********************************************************************/ |
| |
| /* call-back from card_emu.c to enable/disable transmit and/or receive */ |
| void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx) |
| { |
| Usart *usart = get_usart_by_chan(uart_chan); |
| switch (rxtx) { |
| case ENABLE_TX: |
| USART_EnableIt(usart, US_IER_TXRDY); |
| USART_DisableIt(usart, ~US_IER_TXRDY); |
| USART_SetReceiverEnabled(usart, 0); |
| USART_SetTransmitterEnabled(usart, 1); |
| break; |
| case ENABLE_RX: |
| USART_SetTransmitterEnabled(usart, 0); |
| USART_SetReceiverEnabled(usart, 1); |
| USART_EnableIt(usart, US_IER_RXRDY); |
| USART_DisableIt(usart, ~US_IER_RXRDY); |
| break; |
| case 0: |
| default: |
| USART_SetTransmitterEnabled(usart, 0); |
| USART_SetReceiverEnabled(usart, 0); |
| USART_DisableIt(usart, 0xFFFFFFFF); |
| break; |
| } |
| } |
| |
| /* call-back from card_emu.c to transmit a byte */ |
| int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte) |
| { |
| Usart_info *ui = &usart_info[uart_chan]; |
| ISO7816_SendChar(byte, ui); |
| return 1; |
| } |
| |
| |
| /* FIXME: integrate this with actual irq handler */ |
| void usart_irq_rx(uint8_t uart) |
| { |
| Usart *usart = get_usart_by_chan(uart); |
| struct card_handle *ch = ch1; |
| uint32_t csr; |
| uint8_t byte = 0; |
| |
| #ifdef CARDEMU_SECOND_UART |
| if (uart == 1) |
| ch = ch2; |
| #endif |
| csr = usart->US_CSR; |
| |
| if (csr & US_CSR_TXRDY) |
| card_emu_tx_byte(ch); |
| |
| if (csr & US_CSR_RXRDY) { |
| byte = (usart->US_RHR) & 0xFF; |
| rbuf_write(&ch1_rb, byte); |
| } |
| |
| if (csr & (US_CSR_OVRE|US_CSR_FRAME|US_CSR_PARE| |
| US_CSR_TIMEOUT|US_CSR_NACK|(1<<10))) { |
| usart->US_CR = US_CR_RSTSTA | US_CR_RSTIT | US_CR_RSTNACK; |
| TRACE_ERROR("e 0x%x st: 0x%x\n", byte, csr); |
| } |
| } |
| |
| /* call-back from card_emu.c to change UART baud rate */ |
| int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi) |
| { |
| int rc; |
| Usart *usart = get_usart_by_chan(uart_chan); |
| |
| usart->US_CR |= US_CR_RXDIS | US_CR_RSTRX; |
| usart->US_FIDI = fidi & 0x3ff; |
| usart->US_CR |= US_CR_RXEN | US_CR_STTTO; |
| return 0; |
| } |
| |
| /*********************************************************************** |
| * Core USB / mainloop integration |
| ***********************************************************************/ |
| |
| static void usim1_rst_irqhandler(const Pin *pPin) |
| { |
| int active = PIO_Get(&pin_usim1_rst) ? 0 : 1; |
| card_emu_io_statechg(ch1, CARD_IO_RST, active); |
| } |
| |
| static void usim1_vcc_irqhandler(const Pin *pPin) |
| { |
| int active = PIO_Get(&pin_usim1_vcc) ? 1 : 0; |
| card_emu_io_statechg(ch1, CARD_IO_VCC, active); |
| /* FIXME do this for real */ |
| card_emu_io_statechg(ch1, CARD_IO_CLK, active); |
| } |
| |
| /* executed once at system boot for each config */ |
| void mode_cardemu_configure(void) |
| { |
| TRACE_ENTRY(); |
| } |
| |
| /* called if config is activated */ |
| void mode_cardemu_init(void) |
| { |
| TRACE_ENTRY(); |
| |
| rbuf_reset(&ch1_rb); |
| |
| PIO_Configure(pins_cardsim, PIO_LISTSIZE(pins_cardsim)); |
| |
| PIO_Configure(pins_usim1, PIO_LISTSIZE(pins_usim1)); |
| ISO7816_Init(&usart_info[0], CLK_SLAVE); |
| //USART_EnableIt(USART1, US_IER_RXRDY); |
| NVIC_EnableIRQ(USART1_IRQn); |
| |
| PIO_ConfigureIt(&pin_usim1_rst, usim1_rst_irqhandler); |
| PIO_EnableIt(&pin_usim1_rst); |
| PIO_ConfigureIt(&pin_usim1_vcc, usim1_vcc_irqhandler); |
| PIO_EnableIt(&pin_usim1_vcc); |
| |
| ch1 = card_emu_init(0, 2, 0); |
| |
| #ifdef CARDEMU_SECOND_UART |
| PIO_Configure(pins_usim2, PIO_LISTSIZE(pins_usim2)); |
| ISO7816_Init(&usart_info[1], CLK_SLAVE); |
| //USART_EnableIt(USART0, US_IER_RXRDY); |
| NVIC_EnableIRQ(USART0_IRQn); |
| ch2 = card_emu_init(1, 0, 1); |
| #endif |
| } |
| |
| /* called if config is deactivated */ |
| void mode_cardemu_exit(void) |
| { |
| TRACE_ENTRY(); |
| |
| PIO_DisableIt(&pin_usim1_rst); |
| PIO_DisableIt(&pin_usim1_vcc); |
| |
| NVIC_DisableIRQ(USART1_IRQn); |
| USART_SetTransmitterEnabled(USART1, 0); |
| USART_SetReceiverEnabled(USART1, 0); |
| |
| #ifdef CARDEMU_SECOND_UART |
| NVIC_DisableIRQ(USART0_IRQn); |
| USART_SetTransmitterEnabled(USART0, 0); |
| USART_SetReceiverEnabled(USART0, 0); |
| #endif |
| } |
| |
| /* main loop function, called repeatedly */ |
| void mode_cardemu_run(void) |
| { |
| if (ch1) { |
| /* drain the ring buffer from UART into card_emu */ |
| while (1) { |
| __disable_irq(); |
| if (rbuf_is_empty(&ch1_rb)) { |
| __enable_irq(); |
| break; |
| } |
| uint8_t byte = rbuf_read(&ch1_rb); |
| __enable_irq(); |
| card_emu_process_rx_byte(ch1, byte); |
| } |
| usb_refill_to_host(card_emu_get_usb_tx_queue(ch1), PHONE_DATAIN); |
| usb_refill_from_host(card_emu_get_uart_tx_queue(ch1), PHONE_DATAOUT); |
| } |
| |
| #ifdef CARDEMU_SECOND_UART |
| if (ch2) { |
| rst_active = PIO_Get(&pin_usim2_rst) ? 0 : 1; |
| vcc_active = PIO_Get(&pin_usim2_vcc) ? 1 : 0; |
| card_emu_io_statechg(ch2, CARD_IO_RST, rst_active); |
| card_emu_io_statechg(ch2, CARD_IO_VCC, vcc_active); |
| /* FIXME: clock ? */ |
| } |
| usb_from_host(FIXME); |
| #endif |
| } |