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https://gitea.osmocom.org/sim-card/simtrace2.git
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7233cf803a
previously the card RST, VCC, and CLK signal states have been initialized with default values corresponding to an inactive reader. this worked fine for actual inactive readers since the default values match and would be updated when the signal changes (edge detection). but if the reader is in another state, card activation detection could fail. this is fixed since the actual signal values are now used during initialisation. at the same time I changed the variable type from uint8_t to boolean since they have only two possible states, and understanding the actual state when coding is simpler (no need to check which integer corresponds to which state). this change has been successfully tested on the 2 slots of OWHW board. Change-Id: Ie9245d75d48ae93d16f97897d4fa5ad6cd402e73
69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
/* ISO7816-3 state machine for the card side
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*
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* (C) 2010-2017 by Harald Welte <hwelte@hmw-consulting.de>
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* (C) 2018 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
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*/
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#pragma once
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#include <stdint.h>
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struct card_handle;
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enum card_io {
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CARD_IO_VCC,
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CARD_IO_RST,
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CARD_IO_CLK,
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};
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/** initialise card slot
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* @param[in] slot_num slot number (arbitrary number)
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* @param[in] tc_chan timer counter channel (to measure the ETU)
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* @param[in] uart_chan UART peripheral channel
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* @param[in] in_ep USB IN end point number
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* @param[in] irq_ep USB INTerrupt end point number
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* @param[in] vcc_active initial VCC signal state (true = on)
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* @param[in] in_reset initial RST signal state (true = reset asserted)
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* @param[in] clocked initial CLK signat state (true = active)
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* @return main card handle reference
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*/
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struct card_handle *card_emu_init(uint8_t slot_num, uint8_t tc_chan, uint8_t uart_chan, uint8_t in_ep, uint8_t irq_ep, bool vcc_active, bool in_reset, bool clocked);
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/* process a single byte received from the reader */
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void card_emu_process_rx_byte(struct card_handle *ch, uint8_t byte);
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/* transmit a single byte to the reader */
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int card_emu_tx_byte(struct card_handle *ch);
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/* hardware driver informs us that a card I/O signal has changed */
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void card_emu_io_statechg(struct card_handle *ch, enum card_io io, int active);
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/* User sets a new ATR to be returned during next card reset */
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int card_emu_set_atr(struct card_handle *ch, const uint8_t *atr, uint8_t len);
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struct llist_head *card_emu_get_uart_tx_queue(struct card_handle *ch);
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void card_emu_have_new_uart_tx(struct card_handle *ch);
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void card_emu_report_status(struct card_handle *ch);
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#define ENABLE_TX 0x01
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#define ENABLE_RX 0x02
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int card_emu_uart_update_fidi(uint8_t uart_chan, unsigned int fidi);
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int card_emu_uart_tx(uint8_t uart_chan, uint8_t byte);
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void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx);
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void card_emu_uart_wait_tx_idle(uint8_t uart_chan);
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void card_emu_uart_interrupt(uint8_t uart_chan);
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