| /* |
| * Copyright (C) 2019 sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| /* this library provides utilities to handle the ISO-7816 part 3 communication aspects (e.g. related to F and D) */ |
| #pragma once |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| /** default clock rate conversion integer Fd |
| * @implements ISO/IEC 7816-3:2006(E) section 8.1 |
| */ |
| #define ISO7816_3_DEFAULT_FD 372 |
| /** default baud rate adjustment factor Dd |
| * @implements ISO/IEC 7816-3:2006(E) section 8.1 |
| */ |
| #define ISO7816_3_DEFAULT_DD 1 |
| /** default clock rate conversion integer Fi |
| * @implements ISO/IEC 7816-3:2006(E) section 8.3 |
| * @note non-default value is optionally specified in TA1 |
| */ |
| #define ISO7816_3_DEFAULT_FI 372 |
| /** default baud rate adjustment factor Di |
| * @implements ISO/IEC 7816-3:2006(E) section 8.3 |
| * @note non-default value is optionally specified in TA1 |
| */ |
| #define ISO7816_3_DEFAULT_DI 1 |
| /** default maximum clock frequency, in Hz |
| * @implements ISO/IEC 7816-3:2006(E) section 8.3 |
| * @note non-default value is optionally specified in TA1 |
| */ |
| #define ISO7816_3_DEFAULT_FMAX 5000000UL |
| /** default Waiting Integer (WI) value for T=0 |
| * @implements ISO/IEC 7816-3:2006(E) section 10.2 |
| * @note non-default value is optionally specified in TC2 |
| */ |
| #define ISO7816_3_DEFAULT_WI 10 |
| /** default Waiting Time (WT) value, in ETU |
| * @implements ISO/IEC 7816-3:2006(E) section 8.1 |
| * @note depends on Fi, Di, and WI if protocol T=0 is selected |
| */ |
| #define ISO7816_3_DEFAULT_WT 9600 |
| |
| /** Table encoding the clock rate conversion integer Fi |
| * @note Fi is indicated in TA1, but the same table is used for F and Fn during PPS |
| * @implements ISO/IEC 7816-3:2006(E) table 7 |
| */ |
| extern const uint16_t iso7816_3_fi_table[]; |
| |
| /** Table encoding the maximum clock frequency f_max in Hz |
| * @implements ISO/IEC 7816-3:2006(E) table 7 |
| * @note f_max is indicated in TA1, but the same table is used for F and Fn during PPS |
| */ |
| extern const uint32_t iso7816_3_fmax_table[]; |
| |
| /** Table encoding the baud rate adjust integer Di |
| * @implements ISO/IEC 7816-3:2006(E) table 8 |
| * @note Di is indicated in TA1, but the same table is used for D and Dn during PPS |
| */ |
| extern const uint8_t iso7816_3_di_table[]; |
| |
| /* verify if the clock rate conversion integer F value is valid |
| * @param[in] f F value to be validated |
| * @return if F value is valid |
| * @note only values in ISO/IEC 7816-3:2006(E) table 7 are valid |
| */ |
| bool iso7816_3_valid_f(uint16_t f); |
| /* verify if the baud rate adjustment factor D value is valid |
| * @param[in] d D value to be validated |
| * @return if D value is valid |
| * @note only values in ISO/IEC 7816-3:2006(E) table 8 are valid |
| */ |
| bool iso7816_3_valid_d(uint8_t d); |
| /** calculate Waiting Time (WT) |
| * @param[in] wi Waiting Integer |
| * @param[in] fi clock rate conversion integer Fi value |
| * @param[in] di baud rate adjustment factor Di value |
| * @param[in] f clock rate conversion integer F value |
| * @param[in] d baud rate adjustment factor D value |
| * @return Waiting Time WT, in ETU, or < 0 on error (see code for return codes) |
| * @note this should happen after reset and T=0 protocol select (through PPS or implicit) |
| * @implements ISO/IEC 7816-3:2006(E) section 8.1 and 10.2 |
| */ |
| int32_t iso7816_3_calculate_wt(uint8_t wi, uint16_t fi, uint8_t di, uint16_t f, uint8_t d); |