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vbus.c
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vbus.c
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/*****************************************************************************
*
* Copyright Hewell Technology Ltd. 2014,2015
*
* This file is part of vbus-collector.
*
* vbus-collector 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 3 of the License, or
* (at your option) any later version.
* vbus-collector 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 vbus-collector. If not, see <http://www.gnu.org/licenses/>.
*
****************************************************************************/
#include "vbus.h"
void VBus_ExtractSeptett(unsigned char *Buffer, int Offset, int Length) {
unsigned char Septett;
int i;
Septett = 0;
for (i = 0; i < Length; i++) {
if (Buffer [Offset + i] & 0x80) {
Buffer [Offset + i] &= 0x7F;
Septett |= (1 << i);
}
}
Buffer [Offset + Length] = Septett;
}
void VBus_InjectSeptett(unsigned char *Buffer, int Offset, int Length) {
unsigned char Septett;
int i;
Septett = Buffer [Offset + Length];
for (i = 0; i < Length; i++) {
if (Septett & (1 << i)) {
Buffer [Offset + i] |= 0x80;
}
}
}