mirror of
https://github.com/juribeparada/MMDVM_HS.git
synced 2025-12-06 07:12:08 +01:00
121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
|
|
* Copyright (C) 2009-2017 by Jonathan Naylor G4KLX
|
|
* Copyright (C) 2017 by Andy Uribe CA6JAU
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#define WANT_DEBUG
|
|
|
|
#include "Config.h"
|
|
|
|
#if defined(DUPLEX)
|
|
|
|
#include "Globals.h"
|
|
#include "DMRIdleRX.h"
|
|
#include "DMRSlotType.h"
|
|
#include "Utils.h"
|
|
|
|
const uint8_t MAX_SYNC_SYMBOLS_ERRS = 2U;
|
|
const uint8_t MAX_SYNC_BYTES_ERRS = 3U;
|
|
|
|
const uint16_t NOENDPTR = 9999U;
|
|
|
|
const uint8_t CONTROL_IDLE = 0x80U;
|
|
const uint8_t CONTROL_DATA = 0x40U;
|
|
|
|
CDMRIdleRX::CDMRIdleRX() :
|
|
m_buffer(),
|
|
m_dataPtr(0U),
|
|
m_endPtr(NOENDPTR),
|
|
m_colorCode(0U)
|
|
{
|
|
}
|
|
|
|
void CDMRIdleRX::reset()
|
|
{
|
|
m_dataPtr = 0U;
|
|
m_endPtr = NOENDPTR;
|
|
}
|
|
|
|
void CDMRIdleRX::databit(bool bit)
|
|
{
|
|
m_buffer[m_dataPtr] = bit;
|
|
|
|
m_patternBuffer <<= 1;
|
|
if (bit)
|
|
m_patternBuffer |= 0x01U;
|
|
|
|
if (countBits64((m_patternBuffer & DMR_SYNC_BITS_MASK) ^ DMR_MS_DATA_SYNC_BITS) <= MAX_SYNC_BYTES_ERRS) {
|
|
m_endPtr = m_dataPtr + DMR_SLOT_TYPE_LENGTH_BITS / 2U + DMR_INFO_LENGTH_BITS / 2U;
|
|
if (m_endPtr >= DMR_FRAME_LENGTH_BITS)
|
|
m_endPtr -= DMR_FRAME_LENGTH_BITS;
|
|
|
|
DEBUG3("SYNC MS Data found pos/end:", m_dataPtr, m_endPtr);
|
|
}
|
|
|
|
if (m_dataPtr == m_endPtr) {
|
|
uint16_t ptr = m_endPtr + 1;
|
|
|
|
if (ptr >= DMR_FRAME_LENGTH_BITS)
|
|
ptr -= DMR_FRAME_LENGTH_BITS;
|
|
|
|
uint8_t frame[DMR_FRAME_LENGTH_BYTES + 1U];
|
|
bitsToBytes(ptr, DMR_FRAME_LENGTH_BYTES, frame + 1U);
|
|
|
|
uint8_t colorCode;
|
|
uint8_t dataType;
|
|
CDMRSlotType slotType;
|
|
slotType.decode(frame + 1U, colorCode, dataType);
|
|
|
|
if (colorCode == m_colorCode && dataType == DT_CSBK) {
|
|
frame[0U] = CONTROL_IDLE | CONTROL_DATA | DT_CSBK;
|
|
serial.writeDMRData(false, frame, DMR_FRAME_LENGTH_BYTES + 1U);
|
|
}
|
|
|
|
m_endPtr = NOENDPTR;
|
|
}
|
|
|
|
m_dataPtr++;
|
|
if (m_dataPtr >= DMR_FRAME_LENGTH_BITS)
|
|
m_dataPtr = 0U;
|
|
}
|
|
|
|
void CDMRIdleRX::bitsToBytes(uint16_t start, uint8_t count, uint8_t* buffer)
|
|
{
|
|
for (uint8_t i = 0U; i < count; i++) {
|
|
buffer[i] = 0U;
|
|
buffer[i] |= ((m_buffer[start + 0U] & 0x01) << 7);
|
|
buffer[i] |= ((m_buffer[start + 1U] & 0x01) << 6);
|
|
buffer[i] |= ((m_buffer[start + 2U] & 0x01) << 5);
|
|
buffer[i] |= ((m_buffer[start + 3U] & 0x01) << 4);
|
|
buffer[i] |= ((m_buffer[start + 4U] & 0x01) << 3);
|
|
buffer[i] |= ((m_buffer[start + 5U] & 0x01) << 2);
|
|
buffer[i] |= ((m_buffer[start + 6U] & 0x01) << 1);
|
|
buffer[i] |= ((m_buffer[start + 7U] & 0x01) << 0);
|
|
|
|
start += 8U;
|
|
if (start >= DMR_FRAME_LENGTH_BITS)
|
|
start -= DMR_FRAME_LENGTH_BITS;
|
|
}
|
|
}
|
|
|
|
void CDMRIdleRX::setColorCode(uint8_t colorCode)
|
|
{
|
|
m_colorCode = colorCode;
|
|
}
|
|
|
|
#endif
|