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119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsUE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef BCD_HELPERS
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#define BCD_HELPERS
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#include <ctype.h>
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#include <stdint.h>
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#include <string>
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namespace srslte {
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/******************************************************************************
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* Convert between string and BCD-coded MCC.
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* Digits are represented by 4-bit nibbles. Unused nibbles are filled with 0xF.
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* MCC 001 results in 0xF001
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*****************************************************************************/
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inline bool string_to_mcc(std::string str, uint16_t *mcc)
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{
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uint32_t len = str.size();
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if(len != 3) {
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return false;
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}
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if(!isdigit(str[0]) || !isdigit(str[1]) || !isdigit(str[2])) {
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return false;
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}
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*mcc = 0xF000;
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*mcc |= ((uint8_t)(str[0]-'0') << 8);
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*mcc |= ((uint8_t)(str[1]-'0') << 4);
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*mcc |= ((uint8_t)(str[2]-'0'));
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return true;
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}
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inline bool mcc_to_string(uint16_t mcc, std::string *str)
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{
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if((mcc & 0xF000) != 0xF000) {
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return false;
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}
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*str = "";
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*str += ((mcc & 0x0F00) >> 8) + '0';
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*str += ((mcc & 0x00F0) >> 4) + '0';
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*str += (mcc & 0x000F) + '0';
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return true;
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}
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/******************************************************************************
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* Convert between string and BCD-coded MNC.
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* Digits are represented by 4-bit nibbles. Unused nibbles are filled with 0xF.
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* MNC 001 results in 0xF001
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* MNC 01 results in 0xFF01
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*****************************************************************************/
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inline bool string_to_mnc(std::string str, uint16_t *mnc)
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{
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uint32_t len = str.size();
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if(len != 3 && len != 2) {
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return false;
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}
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if(len == 3) {
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if(!isdigit(str[0]) || !isdigit(str[1]) || !isdigit(str[2])) {
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return false;
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}
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*mnc = 0xF000;
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*mnc |= ((uint8_t)(str[0]-'0') << 8);
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*mnc |= ((uint8_t)(str[1]-'0') << 4);
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*mnc |= ((uint8_t)(str[2]-'0'));
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}
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if(len == 2) {
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if(!isdigit(str[0]) || !isdigit(str[1])) {
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return false;
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}
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*mnc = 0xFF00;
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*mnc |= ((uint8_t)(str[0]-'0') << 4);
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*mnc |= ((uint8_t)(str[1]-'0'));
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}
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return true;
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}
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inline bool mnc_to_string(uint16_t mnc, std::string *str)
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{
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if((mnc & 0xF000) != 0xF000) {
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return false;
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}
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*str = "";
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if((mnc & 0xFF00) != 0xFF00) {
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*str += ((mnc & 0x0F00) >> 8) + '0';
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}
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*str += ((mnc & 0x00F0) >> 4) + '0';
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*str += (mnc & 0x000F) + '0';
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return true;
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}
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} // namespace srslte
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#endif // BCD_HELPERS
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