mirror of
https://github.com/juribeparada/MMDVM_HS.git
synced 2025-12-06 07:12:08 +01:00
Adding original MMDVM duplex DMR files
This commit is contained in:
Andy CA6JAU
parent
92108f664b
commit
ba44cf9f66
217
DMRIdleRX.cpp
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217
DMRIdleRX.cpp
Normal file
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@ -0,0 +1,217 @@
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/*
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* Copyright (C) 2009-2017 by Jonathan Naylor G4KLX
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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
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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||||
*
|
||||
* 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.
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*/
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#if defined(DUPLEX)
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#define WANT_DEBUG
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#include "Config.h"
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#include "Globals.h"
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#include "DMRIdleRX.h"
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#include "DMRSlotType.h"
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#include "Utils.h"
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const q15_t SCALING_FACTOR = 19505; // Q15(0.60)
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const uint8_t MAX_SYNC_SYMBOLS_ERRS = 2U;
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const uint8_t MAX_SYNC_BYTES_ERRS = 3U;
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const uint8_t BIT_MASK_TABLE[] = {0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U};
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#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE[(i)&7])
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const uint16_t NOENDPTR = 9999U;
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const uint8_t CONTROL_IDLE = 0x80U;
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const uint8_t CONTROL_DATA = 0x40U;
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CDMRIdleRX::CDMRIdleRX() :
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m_bitBuffer(),
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m_buffer(),
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m_bitPtr(0U),
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m_dataPtr(0U),
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m_endPtr(NOENDPTR),
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m_maxCorr(0),
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m_centre(0),
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m_threshold(0),
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m_colorCode(0U)
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{
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}
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void CDMRIdleRX::reset()
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{
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m_dataPtr = 0U;
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m_bitPtr = 0U;
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m_maxCorr = 0;
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m_threshold = 0;
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m_centre = 0;
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m_endPtr = NOENDPTR;
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}
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void CDMRIdleRX::samples(const q15_t* samples, uint8_t length)
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{
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for (uint8_t i = 0U; i < length; i++)
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processSample(samples[i]);
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}
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void CDMRIdleRX::processSample(q15_t sample)
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{
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m_bitBuffer[m_bitPtr] <<= 1;
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if (sample < 0)
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m_bitBuffer[m_bitPtr] |= 0x01U;
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m_buffer[m_dataPtr] = sample;
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if (countBits32((m_bitBuffer[m_bitPtr] & DMR_SYNC_SYMBOLS_MASK) ^ DMR_MS_DATA_SYNC_SYMBOLS) <= MAX_SYNC_SYMBOLS_ERRS) {
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uint16_t ptr = m_dataPtr + DMR_FRAME_LENGTH_SAMPLES - DMR_SYNC_LENGTH_SAMPLES + DMR_RADIO_SYMBOL_LENGTH;
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if (ptr >= DMR_FRAME_LENGTH_SAMPLES)
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ptr -= DMR_FRAME_LENGTH_SAMPLES;
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q31_t corr = 0;
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q15_t max = -16000;
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q15_t min = 16000;
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for (uint8_t i = 0U; i < DMR_SYNC_LENGTH_SYMBOLS; i++) {
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q15_t val = m_buffer[ptr];
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if (val > max)
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max = val;
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if (val < min)
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min = val;
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switch (DMR_MS_DATA_SYNC_SYMBOLS_VALUES[i]) {
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case +3:
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corr -= (val + val + val);
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break;
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case +1:
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corr -= val;
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break;
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case -1:
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corr += val;
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break;
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default: // -3
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corr += (val + val + val);
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break;
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}
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ptr += DMR_RADIO_SYMBOL_LENGTH;
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if (ptr >= DMR_FRAME_LENGTH_SAMPLES)
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ptr -= DMR_FRAME_LENGTH_SAMPLES;
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}
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if (corr > m_maxCorr) {
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q15_t centre = (max + min) >> 1;
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q31_t v1 = (max - centre) * SCALING_FACTOR;
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q15_t threshold = q15_t(v1 >> 15);
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uint8_t sync[DMR_SYNC_BYTES_LENGTH];
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uint16_t ptr = m_dataPtr + DMR_FRAME_LENGTH_SAMPLES - DMR_SYNC_LENGTH_SAMPLES + DMR_RADIO_SYMBOL_LENGTH;
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if (ptr >= DMR_FRAME_LENGTH_SAMPLES)
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ptr -= DMR_FRAME_LENGTH_SAMPLES;
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samplesToBits(ptr, DMR_SYNC_LENGTH_SYMBOLS, sync, 4U, centre, threshold);
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uint8_t errs = 0U;
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for (uint8_t i = 0U; i < DMR_SYNC_BYTES_LENGTH; i++)
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errs += countBits8((sync[i] & DMR_SYNC_BYTES_MASK[i]) ^ DMR_MS_DATA_SYNC_BYTES[i]);
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if (errs <= MAX_SYNC_BYTES_ERRS) {
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DEBUG3("DMRIdleRX: data sync found centre/threshold", centre, threshold);
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m_maxCorr = corr;
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m_centre = centre;
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m_threshold = threshold;
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m_endPtr = m_dataPtr + DMR_SLOT_TYPE_LENGTH_SAMPLES / 2U + DMR_INFO_LENGTH_SAMPLES / 2U - 1U;
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if (m_endPtr >= DMR_FRAME_LENGTH_SAMPLES)
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m_endPtr -= DMR_FRAME_LENGTH_SAMPLES;
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}
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}
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}
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if (m_dataPtr == m_endPtr) {
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uint16_t ptr = m_endPtr + DMR_RADIO_SYMBOL_LENGTH + 1U;
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if (ptr >= DMR_FRAME_LENGTH_SAMPLES)
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ptr -= DMR_FRAME_LENGTH_SAMPLES;
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uint8_t frame[DMR_FRAME_LENGTH_BYTES + 1U];
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samplesToBits(ptr, DMR_FRAME_LENGTH_SYMBOLS, frame, 8U, m_centre, m_threshold);
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uint8_t colorCode;
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uint8_t dataType;
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CDMRSlotType slotType;
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slotType.decode(frame + 1U, colorCode, dataType);
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if (colorCode == m_colorCode && dataType == DT_CSBK) {
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frame[0U] = CONTROL_IDLE | CONTROL_DATA | DT_CSBK;
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serial.writeDMRData(false, frame, DMR_FRAME_LENGTH_BYTES + 1U);
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}
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m_endPtr = NOENDPTR;
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m_maxCorr = 0;
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}
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m_dataPtr++;
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if (m_dataPtr >= DMR_FRAME_LENGTH_SAMPLES)
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m_dataPtr = 0U;
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m_bitPtr++;
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if (m_bitPtr >= DMR_RADIO_SYMBOL_LENGTH)
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m_bitPtr = 0U;
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}
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void CDMRIdleRX::samplesToBits(uint16_t start, uint8_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold)
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{
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for (uint8_t i = 0U; i < count; i++) {
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q15_t sample = m_buffer[start] - centre;
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if (sample < -threshold) {
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WRITE_BIT1(buffer, offset, false);
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offset++;
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WRITE_BIT1(buffer, offset, true);
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offset++;
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} else if (sample < 0) {
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WRITE_BIT1(buffer, offset, false);
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offset++;
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WRITE_BIT1(buffer, offset, false);
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offset++;
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} else if (sample < threshold) {
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WRITE_BIT1(buffer, offset, true);
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offset++;
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WRITE_BIT1(buffer, offset, false);
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offset++;
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} else {
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WRITE_BIT1(buffer, offset, true);
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offset++;
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WRITE_BIT1(buffer, offset, true);
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offset++;
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}
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start += DMR_RADIO_SYMBOL_LENGTH;
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if (start >= DMR_FRAME_LENGTH_SAMPLES)
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start -= DMR_FRAME_LENGTH_SAMPLES;
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}
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}
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void CDMRIdleRX::setColorCode(uint8_t colorCode)
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{
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m_colorCode = colorCode;
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}
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#endif
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55
DMRIdleRX.h
Normal file
55
DMRIdleRX.h
Normal file
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@ -0,0 +1,55 @@
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/*
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* Copyright (C) 2015 by Jonathan Naylor G4KLX
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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
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
* GNU General Public License for more details.
|
||||
*
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||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
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||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(DMRIDLERX_H)
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#define DMRIDLERX_H
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#if defined(DUPLEX)
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#include "Config.h"
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#include "DMRDefines.h"
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class CDMRIdleRX {
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public:
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CDMRIdleRX();
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void samples(const q15_t* samples, uint8_t length);
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void setColorCode(uint8_t colorCode);
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void reset();
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private:
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uint32_t m_bitBuffer[DMR_RADIO_SYMBOL_LENGTH];
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q15_t m_buffer[DMR_FRAME_LENGTH_SAMPLES];
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uint16_t m_bitPtr;
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uint16_t m_dataPtr;
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uint16_t m_endPtr;
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q31_t m_maxCorr;
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q15_t m_centre;
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q15_t m_threshold;
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uint8_t m_colorCode;
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void processSample(q15_t sample);
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void samplesToBits(uint16_t start, uint8_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold);
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};
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#endif
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#endif
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74
DMRRX.cpp
Normal file
74
DMRRX.cpp
Normal file
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@ -0,0 +1,74 @@
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/*
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* Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
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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
|
||||
* 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
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
* 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.
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*/
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#if defined(DUPLEX)
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#include "Config.h"
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#include "Globals.h"
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#include "DMRRX.h"
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CDMRRX::CDMRRX() :
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m_slot1RX(false),
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m_slot2RX(true)
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{
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}
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void CDMRRX::samples(const q15_t* samples, const uint16_t* rssi, const uint8_t* control, uint8_t length)
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{
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bool dcd1 = false;
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bool dcd2 = false;
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for (uint16_t i = 0U; i < length; i++) {
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switch (control[i]) {
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case MARK_SLOT1:
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m_slot1RX.start();
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break;
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case MARK_SLOT2:
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m_slot2RX.start();
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break;
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default:
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break;
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}
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dcd1 = m_slot1RX.processSample(samples[i], rssi[i]);
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dcd2 = m_slot2RX.processSample(samples[i], rssi[i]);
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}
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io.setDecode(dcd1 || dcd2);
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}
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void CDMRRX::setColorCode(uint8_t colorCode)
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{
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m_slot1RX.setColorCode(colorCode);
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m_slot2RX.setColorCode(colorCode);
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}
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void CDMRRX::setDelay(uint8_t delay)
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{
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m_slot1RX.setDelay(delay);
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m_slot2RX.setDelay(delay);
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}
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void CDMRRX::reset()
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{
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m_slot1RX.reset();
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m_slot2RX.reset();
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}
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#endif
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45
DMRRX.h
Normal file
45
DMRRX.h
Normal file
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@ -0,0 +1,45 @@
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/*
|
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* Copyright (C) 2015,2016 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* 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.
|
||||
*/
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#if !defined(DMRRX_H)
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#define DMRRX_H
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#if defined(DUPLEX)
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#include "Config.h"
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#include "DMRSlotRX.h"
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class CDMRRX {
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public:
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CDMRRX();
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void samples(const q15_t* samples, const uint16_t* rssi, const uint8_t* control, uint8_t length);
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void setColorCode(uint8_t colorCode);
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void setDelay(uint8_t delay);
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void reset();
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private:
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CDMRSlotRX m_slot1RX;
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CDMRSlotRX m_slot2RX;
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};
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#endif
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#endif
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408
DMRSlotRX.cpp
Normal file
408
DMRSlotRX.cpp
Normal file
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@ -0,0 +1,408 @@
|
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/*
|
||||
* Copyright (C) 2009-2017 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if defined(DUPLEX)
|
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|
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#define WANT_DEBUG
|
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|
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#include "Config.h"
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#include "Globals.h"
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#include "DMRSlotRX.h"
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#include "DMRSlotType.h"
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#include "Utils.h"
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const uint16_t SCAN_START = 400U;
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const uint16_t SCAN_END = 490U;
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const q15_t SCALING_FACTOR = 19505; // Q15(0.60)
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|
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const uint8_t MAX_SYNC_SYMBOLS_ERRS = 2U;
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const uint8_t MAX_SYNC_BYTES_ERRS = 3U;
|
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|
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const uint8_t MAX_SYNC_LOST_FRAMES = 13U;
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const uint8_t BIT_MASK_TABLE[] = {0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U};
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#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE[(i)&7])
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|
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const uint16_t NOENDPTR = 9999U;
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const uint8_t CONTROL_NONE = 0x00U;
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const uint8_t CONTROL_VOICE = 0x20U;
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const uint8_t CONTROL_DATA = 0x40U;
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CDMRSlotRX::CDMRSlotRX(bool slot) :
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m_slot(slot),
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m_bitBuffer(),
|
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m_buffer(),
|
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m_bitPtr(0U),
|
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m_dataPtr(0U),
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m_syncPtr(0U),
|
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m_startPtr(0U),
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m_endPtr(NOENDPTR),
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m_delayPtr(0U),
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m_maxCorr(0),
|
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m_centre(),
|
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m_threshold(),
|
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m_averagePtr(0U),
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m_control(CONTROL_NONE),
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m_syncCount(0U),
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m_colorCode(0U),
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m_delay(0U),
|
||||
m_state(DMRRXS_NONE),
|
||||
m_n(0U),
|
||||
m_type(0U),
|
||||
m_rssi()
|
||||
{
|
||||
}
|
||||
|
||||
void CDMRSlotRX::start()
|
||||
{
|
||||
m_dataPtr = 0U;
|
||||
m_delayPtr = 0U;
|
||||
m_bitPtr = 0U;
|
||||
m_maxCorr = 0;
|
||||
m_control = CONTROL_NONE;
|
||||
}
|
||||
|
||||
void CDMRSlotRX::reset()
|
||||
{
|
||||
m_syncPtr = 0U;
|
||||
m_dataPtr = 0U;
|
||||
m_delayPtr = 0U;
|
||||
m_bitPtr = 0U;
|
||||
m_maxCorr = 0;
|
||||
m_control = CONTROL_NONE;
|
||||
m_syncCount = 0U;
|
||||
m_state = DMRRXS_NONE;
|
||||
m_startPtr = 0U;
|
||||
m_endPtr = NOENDPTR;
|
||||
}
|
||||
|
||||
bool CDMRSlotRX::processSample(q15_t sample, uint16_t rssi)
|
||||
{
|
||||
m_delayPtr++;
|
||||
if (m_delayPtr < m_delay)
|
||||
return m_state != DMRRXS_NONE;
|
||||
|
||||
// Ensure that the buffer doesn't overflow
|
||||
if (m_dataPtr > m_endPtr || m_dataPtr >= 900U)
|
||||
return m_state != DMRRXS_NONE;
|
||||
|
||||
m_buffer[m_dataPtr] = sample;
|
||||
m_rssi[m_dataPtr] = rssi;
|
||||
|
||||
m_bitBuffer[m_bitPtr] <<= 1;
|
||||
if (sample < 0)
|
||||
m_bitBuffer[m_bitPtr] |= 0x01U;
|
||||
|
||||
if (m_state == DMRRXS_NONE) {
|
||||
if (m_dataPtr >= SCAN_START && m_dataPtr <= SCAN_END)
|
||||
correlateSync(true);
|
||||
} else {
|
||||
|
||||
uint16_t min = m_syncPtr - 1U;
|
||||
uint16_t max = m_syncPtr + 1U;
|
||||
if (m_dataPtr >= min && m_dataPtr <= max)
|
||||
correlateSync(false);
|
||||
}
|
||||
|
||||
if (m_dataPtr == m_endPtr) {
|
||||
// Find the average centre and threshold values
|
||||
q15_t centre = (m_centre[0U] + m_centre[1U] + m_centre[2U] + m_centre[3U]) >> 2;
|
||||
q15_t threshold = (m_threshold[0U] + m_threshold[1U] + m_threshold[2U] + m_threshold[3U]) >> 2;
|
||||
|
||||
uint8_t frame[DMR_FRAME_LENGTH_BYTES + 3U];
|
||||
frame[0U] = m_control;
|
||||
|
||||
uint16_t ptr = m_endPtr - DMR_FRAME_LENGTH_SAMPLES + DMR_RADIO_SYMBOL_LENGTH + 1U;
|
||||
samplesToBits(ptr, DMR_FRAME_LENGTH_SYMBOLS, frame, 8U, centre, threshold);
|
||||
|
||||
if (m_control == CONTROL_DATA) {
|
||||
// Data sync
|
||||
uint8_t colorCode;
|
||||
uint8_t dataType;
|
||||
CDMRSlotType slotType;
|
||||
slotType.decode(frame + 1U, colorCode, dataType);
|
||||
|
||||
if (colorCode == m_colorCode) {
|
||||
m_syncCount = 0U;
|
||||
m_n = 0U;
|
||||
|
||||
frame[0U] |= dataType;
|
||||
|
||||
switch (dataType) {
|
||||
case DT_DATA_HEADER:
|
||||
DEBUG5("DMRSlotRX: data header found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_state = DMRRXS_DATA;
|
||||
m_type = 0x00U;
|
||||
break;
|
||||
case DT_RATE_12_DATA:
|
||||
case DT_RATE_34_DATA:
|
||||
case DT_RATE_1_DATA:
|
||||
if (m_state == DMRRXS_DATA) {
|
||||
DEBUG5("DMRSlotRX: data payload found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_type = dataType;
|
||||
}
|
||||
break;
|
||||
case DT_VOICE_LC_HEADER:
|
||||
DEBUG5("DMRSlotRX: voice header found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_state = DMRRXS_VOICE;
|
||||
break;
|
||||
case DT_VOICE_PI_HEADER:
|
||||
if (m_state == DMRRXS_VOICE) {
|
||||
DEBUG5("DMRSlotRX: voice pi header found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
}
|
||||
m_state = DMRRXS_VOICE;
|
||||
break;
|
||||
case DT_TERMINATOR_WITH_LC:
|
||||
if (m_state == DMRRXS_VOICE) {
|
||||
DEBUG5("DMRSlotRX: voice terminator found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_state = DMRRXS_NONE;
|
||||
m_endPtr = NOENDPTR;
|
||||
}
|
||||
break;
|
||||
default: // DT_CSBK
|
||||
DEBUG5("DMRSlotRX: csbk found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_state = DMRRXS_NONE;
|
||||
m_endPtr = NOENDPTR;
|
||||
break;
|
||||
}
|
||||
}
|
||||
} else if (m_control == CONTROL_VOICE) {
|
||||
// Voice sync
|
||||
DEBUG5("DMRSlotRX: voice sync found slot/pos/centre/threshold", m_slot ? 2U : 1U, m_syncPtr, centre, threshold);
|
||||
writeRSSIData(frame);
|
||||
m_state = DMRRXS_VOICE;
|
||||
m_syncCount = 0U;
|
||||
m_n = 0U;
|
||||
} else {
|
||||
if (m_state != DMRRXS_NONE) {
|
||||
m_syncCount++;
|
||||
if (m_syncCount >= MAX_SYNC_LOST_FRAMES) {
|
||||
serial.writeDMRLost(m_slot);
|
||||
m_state = DMRRXS_NONE;
|
||||
m_endPtr = NOENDPTR;
|
||||
}
|
||||
}
|
||||
|
||||
if (m_state == DMRRXS_VOICE) {
|
||||
if (m_n >= 5U) {
|
||||
frame[0U] = CONTROL_VOICE;
|
||||
m_n = 0U;
|
||||
} else {
|
||||
frame[0U] = ++m_n;
|
||||
}
|
||||
|
||||
serial.writeDMRData(m_slot, frame, DMR_FRAME_LENGTH_BYTES + 1U);
|
||||
} else if (m_state == DMRRXS_DATA) {
|
||||
if (m_type != 0x00U) {
|
||||
frame[0U] = CONTROL_DATA | m_type;
|
||||
writeRSSIData(frame);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
m_dataPtr++;
|
||||
|
||||
m_bitPtr++;
|
||||
if (m_bitPtr >= DMR_RADIO_SYMBOL_LENGTH)
|
||||
m_bitPtr = 0U;
|
||||
|
||||
return m_state != DMRRXS_NONE;
|
||||
}
|
||||
|
||||
void CDMRSlotRX::correlateSync(bool first)
|
||||
{
|
||||
uint8_t errs = countBits32((m_bitBuffer[m_bitPtr] & DMR_SYNC_SYMBOLS_MASK) ^ DMR_MS_DATA_SYNC_SYMBOLS);
|
||||
|
||||
// The voice sync is the complement of the data sync
|
||||
bool data = (errs <= MAX_SYNC_SYMBOLS_ERRS);
|
||||
bool voice = (errs >= (DMR_SYNC_LENGTH_SYMBOLS - MAX_SYNC_SYMBOLS_ERRS));
|
||||
|
||||
if (data || voice) {
|
||||
uint16_t ptr = m_dataPtr - DMR_SYNC_LENGTH_SAMPLES + DMR_RADIO_SYMBOL_LENGTH;
|
||||
|
||||
q31_t corr = 0;
|
||||
q15_t min = 16000;
|
||||
q15_t max = -16000;
|
||||
|
||||
for (uint8_t i = 0U; i < DMR_SYNC_LENGTH_SYMBOLS; i++) {
|
||||
q15_t val = m_buffer[ptr];
|
||||
|
||||
if (val > max)
|
||||
max = val;
|
||||
if (val < min)
|
||||
min = val;
|
||||
|
||||
int8_t corrVal;
|
||||
if (data)
|
||||
corrVal = DMR_MS_DATA_SYNC_SYMBOLS_VALUES[i];
|
||||
else
|
||||
corrVal = DMR_MS_VOICE_SYNC_SYMBOLS_VALUES[i];
|
||||
|
||||
switch (corrVal) {
|
||||
case +3:
|
||||
corr -= (val + val + val);
|
||||
break;
|
||||
case +1:
|
||||
corr -= val;
|
||||
break;
|
||||
case -1:
|
||||
corr += val;
|
||||
break;
|
||||
default: // -3
|
||||
corr += (val + val + val);
|
||||
break;
|
||||
}
|
||||
|
||||
ptr += DMR_RADIO_SYMBOL_LENGTH;
|
||||
}
|
||||
|
||||
if (corr > m_maxCorr) {
|
||||
q15_t centre = (max + min) >> 1;
|
||||
|
||||
q31_t v1 = (max - centre) * SCALING_FACTOR;
|
||||
q15_t threshold = q15_t(v1 >> 15);
|
||||
|
||||
uint8_t sync[DMR_SYNC_BYTES_LENGTH];
|
||||
uint16_t ptr = m_dataPtr - DMR_SYNC_LENGTH_SAMPLES + DMR_RADIO_SYMBOL_LENGTH;
|
||||
samplesToBits(ptr, DMR_SYNC_LENGTH_SYMBOLS, sync, 4U, centre, threshold);
|
||||
|
||||
if (data) {
|
||||
uint8_t errs = 0U;
|
||||
for (uint8_t i = 0U; i < DMR_SYNC_BYTES_LENGTH; i++)
|
||||
errs += countBits8((sync[i] & DMR_SYNC_BYTES_MASK[i]) ^ DMR_MS_DATA_SYNC_BYTES[i]);
|
||||
|
||||
if (errs <= MAX_SYNC_BYTES_ERRS) {
|
||||
if (first) {
|
||||
m_threshold[0U] = m_threshold[1U] = m_threshold[2U] = m_threshold[3U] = threshold;
|
||||
m_centre[0U] = m_centre[1U] = m_centre[2U] = m_centre[3U] = centre;
|
||||
m_averagePtr = 0U;
|
||||
} else {
|
||||
m_threshold[m_averagePtr] = threshold;
|
||||
m_centre[m_averagePtr] = centre;
|
||||
|
||||
m_averagePtr++;
|
||||
if (m_averagePtr >= 4U)
|
||||
m_averagePtr = 0U;
|
||||
}
|
||||
|
||||
m_maxCorr = corr;
|
||||
m_control = CONTROL_DATA;
|
||||
m_syncPtr = m_dataPtr;
|
||||
m_startPtr = m_dataPtr - DMR_SLOT_TYPE_LENGTH_SAMPLES / 2U - DMR_INFO_LENGTH_SAMPLES / 2U - DMR_SYNC_LENGTH_SAMPLES;
|
||||
m_endPtr = m_dataPtr + DMR_SLOT_TYPE_LENGTH_SAMPLES / 2U + DMR_INFO_LENGTH_SAMPLES / 2U - 1U;
|
||||
}
|
||||
} else { // if (voice)
|
||||
uint8_t errs = 0U;
|
||||
for (uint8_t i = 0U; i < DMR_SYNC_BYTES_LENGTH; i++)
|
||||
errs += countBits8((sync[i] & DMR_SYNC_BYTES_MASK[i]) ^ DMR_MS_VOICE_SYNC_BYTES[i]);
|
||||
|
||||
if (errs <= MAX_SYNC_BYTES_ERRS) {
|
||||
if (first) {
|
||||
m_threshold[0U] = m_threshold[1U] = m_threshold[2U] = m_threshold[3U] = threshold;
|
||||
m_centre[0U] = m_centre[1U] = m_centre[2U] = m_centre[3U] = centre;
|
||||
m_averagePtr = 0U;
|
||||
} else {
|
||||
m_threshold[m_averagePtr] = threshold;
|
||||
m_centre[m_averagePtr] = centre;
|
||||
|
||||
m_averagePtr++;
|
||||
if (m_averagePtr >= 4U)
|
||||
m_averagePtr = 0U;
|
||||
}
|
||||
|
||||
m_maxCorr = corr;
|
||||
m_control = CONTROL_VOICE;
|
||||
m_syncPtr = m_dataPtr;
|
||||
m_startPtr = m_dataPtr - DMR_SLOT_TYPE_LENGTH_SAMPLES / 2U - DMR_INFO_LENGTH_SAMPLES / 2U - DMR_SYNC_LENGTH_SAMPLES;
|
||||
m_endPtr = m_dataPtr + DMR_SLOT_TYPE_LENGTH_SAMPLES / 2U + DMR_INFO_LENGTH_SAMPLES / 2U - 1U;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void CDMRSlotRX::samplesToBits(uint16_t start, uint8_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold)
|
||||
{
|
||||
for (uint8_t i = 0U; i < count; i++, start += DMR_RADIO_SYMBOL_LENGTH) {
|
||||
q15_t sample = m_buffer[start] - centre;
|
||||
|
||||
if (sample < -threshold) {
|
||||
WRITE_BIT1(buffer, offset, false);
|
||||
offset++;
|
||||
WRITE_BIT1(buffer, offset, true);
|
||||
offset++;
|
||||
} else if (sample < 0) {
|
||||
WRITE_BIT1(buffer, offset, false);
|
||||
offset++;
|
||||
WRITE_BIT1(buffer, offset, false);
|
||||
offset++;
|
||||
} else if (sample < threshold) {
|
||||
WRITE_BIT1(buffer, offset, true);
|
||||
offset++;
|
||||
WRITE_BIT1(buffer, offset, false);
|
||||
offset++;
|
||||
} else {
|
||||
WRITE_BIT1(buffer, offset, true);
|
||||
offset++;
|
||||
WRITE_BIT1(buffer, offset, true);
|
||||
offset++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void CDMRSlotRX::setColorCode(uint8_t colorCode)
|
||||
{
|
||||
m_colorCode = colorCode;
|
||||
}
|
||||
|
||||
void CDMRSlotRX::setDelay(uint8_t delay)
|
||||
{
|
||||
m_delay = delay;
|
||||
}
|
||||
|
||||
void CDMRSlotRX::writeRSSIData(uint8_t* frame)
|
||||
{
|
||||
#if defined(SEND_RSSI_DATA)
|
||||
// Calculate RSSI average over a burst period. We don't take into account 2.5 ms at the beginning and 2.5 ms at the end
|
||||
uint16_t start = m_startPtr + DMR_SYNC_LENGTH_SAMPLES / 2U;
|
||||
|
||||
uint32_t accum = 0U;
|
||||
for (uint16_t i = 0U; i < (DMR_FRAME_LENGTH_SAMPLES - DMR_SYNC_LENGTH_SAMPLES); i++)
|
||||
accum += m_rssi[start++];
|
||||
|
||||
uint16_t avg = accum / (DMR_FRAME_LENGTH_SAMPLES - DMR_SYNC_LENGTH_SAMPLES);
|
||||
frame[34U] = (avg >> 8) & 0xFFU;
|
||||
frame[35U] = (avg >> 0) & 0xFFU;
|
||||
|
||||
serial.writeDMRData(m_slot, frame, DMR_FRAME_LENGTH_BYTES + 3U);
|
||||
#else
|
||||
serial.writeDMRData(m_slot, frame, DMR_FRAME_LENGTH_BYTES + 1U);
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif
|
||||
76
DMRSlotRX.h
Normal file
76
DMRSlotRX.h
Normal file
|
|
@ -0,0 +1,76 @@
|
|||
/*
|
||||
* Copyright (C) 2015,2016,2017 by Jonathan Naylor G4KLX
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if !defined(DMRSLOTRX_H)
|
||||
#define DMRSLOTRX_H
|
||||
|
||||
#if defined(DUPLEX)
|
||||
|
||||
#include "Config.h"
|
||||
#include "DMRDefines.h"
|
||||
|
||||
enum DMRRX_STATE {
|
||||
DMRRXS_NONE,
|
||||
DMRRXS_VOICE,
|
||||
DMRRXS_DATA
|
||||
};
|
||||
|
||||
class CDMRSlotRX {
|
||||
public:
|
||||
CDMRSlotRX(bool slot);
|
||||
|
||||
void start();
|
||||
|
||||
bool processSample(q15_t sample, uint16_t rssi);
|
||||
|
||||
void setColorCode(uint8_t colorCode);
|
||||
void setDelay(uint8_t delay);
|
||||
|
||||
void reset();
|
||||
|
||||
private:
|
||||
bool m_slot;
|
||||
uint32_t m_bitBuffer[DMR_RADIO_SYMBOL_LENGTH];
|
||||
q15_t m_buffer[900U];
|
||||
uint16_t m_bitPtr;
|
||||
uint16_t m_dataPtr;
|
||||
uint16_t m_syncPtr;
|
||||
uint16_t m_startPtr;
|
||||
uint16_t m_endPtr;
|
||||
uint16_t m_delayPtr;
|
||||
q31_t m_maxCorr;
|
||||
q15_t m_centre[4U];
|
||||
q15_t m_threshold[4U];
|
||||
uint8_t m_averagePtr;
|
||||
uint8_t m_control;
|
||||
uint8_t m_syncCount;
|
||||
uint8_t m_colorCode;
|
||||
uint16_t m_delay;
|
||||
DMRRX_STATE m_state;
|
||||
uint8_t m_n;
|
||||
uint8_t m_type;
|
||||
uint16_t m_rssi[900U];
|
||||
|
||||
void correlateSync(bool first);
|
||||
void samplesToBits(uint16_t start, uint8_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold);
|
||||
void writeRSSIData(uint8_t* frame);
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
382
DMRTX.cpp
Normal file
382
DMRTX.cpp
Normal file
|
|
@ -0,0 +1,382 @@
|
|||
/*
|
||||
* Copyright (C) 2009-2017 by Jonathan Naylor G4KLX
|
||||
* Copyright (C) 2016 by Colin Durbridge G4EML
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if defined(DUPLEX)
|
||||
|
||||
// #define WANT_DEBUG
|
||||
|
||||
#include "Config.h"
|
||||
#include "Globals.h"
|
||||
#include "DMRSlotType.h"
|
||||
|
||||
#if defined(WIDE_C4FSK_FILTERS_TX)
|
||||
// Generated using rcosdesign(0.2, 4, 5, 'sqrt') in MATLAB
|
||||
static q15_t DMR_C4FSK_FILTER[] = {0, 0, 0, 0, 688, -680, -2158, -3060, -2724, -775, 2684, 7041, 11310, 14425, 15565, 14425,
|
||||
11310, 7041, 2684, -775, -2724, -3060, -2158, -680, 688}; // numTaps = 25, L = 5
|
||||
const uint16_t DMR_C4FSK_FILTER_PHASE_LEN = 5U; // phaseLength = numTaps/L
|
||||
#else
|
||||
// Generated using rcosdesign(0.2, 8, 5, 'sqrt') in MATLAB
|
||||
static q15_t DMR_C4FSK_FILTER[] = {0, 0, 0, 0, 401, 104, -340, -731, -847, -553, 112, 909, 1472, 1450, 683, -675, -2144, -3040, -2706, -770, 2667, 6995,
|
||||
11237, 14331, 15464, 14331, 11237, 6995, 2667, -770, -2706, -3040, -2144, -675, 683, 1450, 1472, 909, 112,
|
||||
-553, -847, -731, -340, 104, 401}; // numTaps = 45, L = 5
|
||||
const uint16_t DMR_C4FSK_FILTER_PHASE_LEN = 9U; // phaseLength = numTaps/L
|
||||
#endif
|
||||
|
||||
const q15_t DMR_LEVELA = 2889;
|
||||
const q15_t DMR_LEVELB = 963;
|
||||
const q15_t DMR_LEVELC = -963;
|
||||
const q15_t DMR_LEVELD = -2889;
|
||||
|
||||
// The PR FILL and BS Data Sync pattern.
|
||||
const uint8_t IDLE_DATA[] =
|
||||
{0x53U, 0xC2U, 0x5EU, 0xABU, 0xA8U, 0x67U, 0x1DU, 0xC7U, 0x38U, 0x3BU, 0xD9U,
|
||||
0x36U, 0x00U, 0x0DU, 0xFFU, 0x57U, 0xD7U, 0x5DU, 0xF5U, 0xD0U, 0x03U, 0xF6U,
|
||||
0xE4U, 0x65U, 0x17U, 0x1BU, 0x48U, 0xCAU, 0x6DU, 0x4FU, 0xC6U, 0x10U, 0xB4U};
|
||||
|
||||
const uint8_t CACH_INTERLEAVE[] =
|
||||
{ 1U, 2U, 3U, 5U, 6U, 7U, 9U, 10U, 11U, 13U, 15U, 16U, 17U, 19U, 20U, 21U, 23U,
|
||||
25U, 26U, 27U, 29U, 30U, 31U, 33U, 34U, 35U, 37U, 39U, 40U, 41U, 43U, 44U, 45U, 47U,
|
||||
49U, 50U, 51U, 53U, 54U, 55U, 57U, 58U, 59U, 61U, 63U, 64U, 65U, 67U, 68U, 69U, 71U,
|
||||
73U, 74U, 75U, 77U, 78U, 79U, 81U, 82U, 83U, 85U, 87U, 88U, 89U, 91U, 92U, 93U, 95U};
|
||||
|
||||
const uint8_t EMPTY_SHORT_LC[] =
|
||||
{0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U};
|
||||
|
||||
const uint8_t BIT_MASK_TABLE[] = {0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U, 0x02U, 0x01U};
|
||||
|
||||
#define WRITE_BIT1(p,i,b) p[(i)>>3] = (b) ? (p[(i)>>3] | BIT_MASK_TABLE[(i)&7]) : (p[(i)>>3] & ~BIT_MASK_TABLE[(i)&7])
|
||||
#define READ_BIT1(p,i) (p[(i)>>3] & BIT_MASK_TABLE[(i)&7])
|
||||
|
||||
const uint32_t STARTUP_COUNT = 20U;
|
||||
|
||||
CDMRTX::CDMRTX() :
|
||||
m_fifo(),
|
||||
m_modFilter(),
|
||||
m_modState(),
|
||||
m_state(DMRTXSTATE_IDLE),
|
||||
m_idle(),
|
||||
m_cachPtr(0U),
|
||||
m_shortLC(),
|
||||
m_newShortLC(),
|
||||
m_markBuffer(),
|
||||
m_poBuffer(),
|
||||
m_poLen(0U),
|
||||
m_poPtr(0U),
|
||||
m_frameCount(0U),
|
||||
m_abort()
|
||||
{
|
||||
::memset(m_modState, 0x00U, 16U * sizeof(q15_t));
|
||||
|
||||
m_modFilter.L = DMR_RADIO_SYMBOL_LENGTH;
|
||||
m_modFilter.phaseLength = DMR_C4FSK_FILTER_PHASE_LEN;
|
||||
m_modFilter.pCoeffs = DMR_C4FSK_FILTER;
|
||||
m_modFilter.pState = m_modState;
|
||||
|
||||
::memcpy(m_newShortLC, EMPTY_SHORT_LC, 12U);
|
||||
::memcpy(m_shortLC, EMPTY_SHORT_LC, 12U);
|
||||
|
||||
m_abort[0U] = false;
|
||||
m_abort[1U] = false;
|
||||
}
|
||||
|
||||
void CDMRTX::process()
|
||||
{
|
||||
if (m_state == DMRTXSTATE_IDLE)
|
||||
return;
|
||||
|
||||
if (m_poLen == 0U) {
|
||||
switch (m_state) {
|
||||
case DMRTXSTATE_SLOT1:
|
||||
createData(0U);
|
||||
m_state = DMRTXSTATE_CACH2;
|
||||
break;
|
||||
|
||||
case DMRTXSTATE_CACH2:
|
||||
createCACH(1U, 0U);
|
||||
m_state = DMRTXSTATE_SLOT2;
|
||||
break;
|
||||
|
||||
case DMRTXSTATE_SLOT2:
|
||||
createData(1U);
|
||||
m_state = DMRTXSTATE_CACH1;
|
||||
break;
|
||||
|
||||
case DMRTXSTATE_CAL:
|
||||
createCal();
|
||||
break;
|
||||
|
||||
default:
|
||||
createCACH(0U, 1U);
|
||||
m_state = DMRTXSTATE_SLOT1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (m_poLen > 0U) {
|
||||
uint16_t space = io.getSpace();
|
||||
|
||||
while (space > (4U * DMR_RADIO_SYMBOL_LENGTH)) {
|
||||
uint8_t c = m_poBuffer[m_poPtr];
|
||||
uint8_t m = m_markBuffer[m_poPtr];
|
||||
m_poPtr++;
|
||||
|
||||
writeByte(c, m);
|
||||
|
||||
space -= 4U * DMR_RADIO_SYMBOL_LENGTH;
|
||||
|
||||
if (m_poPtr >= m_poLen) {
|
||||
m_poPtr = 0U;
|
||||
m_poLen = 0U;
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::writeData1(const uint8_t* data, uint8_t length)
|
||||
{
|
||||
if (length != (DMR_FRAME_LENGTH_BYTES + 1U))
|
||||
return 4U;
|
||||
|
||||
uint16_t space = m_fifo[0U].getSpace();
|
||||
if (space < DMR_FRAME_LENGTH_BYTES)
|
||||
return 5U;
|
||||
|
||||
if (m_abort[0U]) {
|
||||
m_fifo[0U].reset();
|
||||
m_abort[0U] = false;
|
||||
}
|
||||
|
||||
for (uint8_t i = 0U; i < DMR_FRAME_LENGTH_BYTES; i++)
|
||||
m_fifo[0U].put(data[i + 1U]);
|
||||
|
||||
// Start the TX if it isn't already on
|
||||
if (!m_tx)
|
||||
m_state = DMRTXSTATE_SLOT1;
|
||||
|
||||
return 0U;
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::writeData2(const uint8_t* data, uint8_t length)
|
||||
{
|
||||
if (length != (DMR_FRAME_LENGTH_BYTES + 1U))
|
||||
return 4U;
|
||||
|
||||
uint16_t space = m_fifo[1U].getSpace();
|
||||
if (space < DMR_FRAME_LENGTH_BYTES)
|
||||
return 5U;
|
||||
|
||||
if (m_abort[1U]) {
|
||||
m_fifo[1U].reset();
|
||||
m_abort[1U] = false;
|
||||
}
|
||||
|
||||
for (uint8_t i = 0U; i < DMR_FRAME_LENGTH_BYTES; i++)
|
||||
m_fifo[1U].put(data[i + 1U]);
|
||||
|
||||
// Start the TX if it isn't already on
|
||||
if (!m_tx)
|
||||
m_state = DMRTXSTATE_SLOT1;
|
||||
|
||||
return 0U;
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::writeShortLC(const uint8_t* data, uint8_t length)
|
||||
{
|
||||
if (length != 9U)
|
||||
return 4U;
|
||||
|
||||
::memset(m_newShortLC, 0x00U, 12U);
|
||||
|
||||
for (uint8_t i = 0U; i < 68U; i++) {
|
||||
bool b = READ_BIT1(data, i);
|
||||
uint8_t n = CACH_INTERLEAVE[i];
|
||||
WRITE_BIT1(m_newShortLC, n, b);
|
||||
}
|
||||
|
||||
return 0U;
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::writeAbort(const uint8_t* data, uint8_t length)
|
||||
{
|
||||
if (length != 1U)
|
||||
return 4U;
|
||||
|
||||
switch (data[0U]) {
|
||||
case 1U:
|
||||
m_abort[0U] = true;
|
||||
return 0U;
|
||||
|
||||
case 2U:
|
||||
m_abort[1U] = true;
|
||||
return 0U;
|
||||
|
||||
default:
|
||||
return 4U;
|
||||
}
|
||||
}
|
||||
|
||||
void CDMRTX::setStart(bool start)
|
||||
{
|
||||
m_state = start ? DMRTXSTATE_SLOT1 : DMRTXSTATE_IDLE;
|
||||
|
||||
m_frameCount = 0U;
|
||||
|
||||
m_abort[0U] = false;
|
||||
m_abort[1U] = false;
|
||||
}
|
||||
|
||||
void CDMRTX::setCal(bool start)
|
||||
{
|
||||
m_state = start ? DMRTXSTATE_CAL : DMRTXSTATE_IDLE;
|
||||
}
|
||||
|
||||
void CDMRTX::writeByte(uint8_t c, uint8_t control)
|
||||
{
|
||||
q15_t inBuffer[4U];
|
||||
q15_t outBuffer[DMR_RADIO_SYMBOL_LENGTH * 4U];
|
||||
|
||||
const uint8_t MASK = 0xC0U;
|
||||
|
||||
for (uint8_t i = 0U; i < 4U; i++, c <<= 2) {
|
||||
switch (c & MASK) {
|
||||
case 0xC0U:
|
||||
inBuffer[i] = DMR_LEVELA;
|
||||
break;
|
||||
case 0x80U:
|
||||
inBuffer[i] = DMR_LEVELB;
|
||||
break;
|
||||
case 0x00U:
|
||||
inBuffer[i] = DMR_LEVELC;
|
||||
break;
|
||||
default:
|
||||
inBuffer[i] = DMR_LEVELD;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t controlBuffer[DMR_RADIO_SYMBOL_LENGTH * 4U];
|
||||
::memset(controlBuffer, MARK_NONE, DMR_RADIO_SYMBOL_LENGTH * 4U * sizeof(uint8_t));
|
||||
controlBuffer[DMR_RADIO_SYMBOL_LENGTH * 2U] = control;
|
||||
|
||||
::arm_fir_interpolate_q15(&m_modFilter, inBuffer, outBuffer, 4U);
|
||||
|
||||
io.write(STATE_DMR, outBuffer, DMR_RADIO_SYMBOL_LENGTH * 4U, controlBuffer);
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::getSpace1() const
|
||||
{
|
||||
return m_fifo[0U].getSpace() / (DMR_FRAME_LENGTH_BYTES + 2U);
|
||||
}
|
||||
|
||||
uint8_t CDMRTX::getSpace2() const
|
||||
{
|
||||
return m_fifo[1U].getSpace() / (DMR_FRAME_LENGTH_BYTES + 2U);
|
||||
}
|
||||
|
||||
void CDMRTX::createData(uint8_t slotIndex)
|
||||
{
|
||||
if (m_fifo[slotIndex].getData() > 0U && m_frameCount >= STARTUP_COUNT) {
|
||||
for (unsigned int i = 0U; i < DMR_FRAME_LENGTH_BYTES; i++) {
|
||||
m_poBuffer[i] = m_fifo[slotIndex].get();
|
||||
m_markBuffer[i] = MARK_NONE;
|
||||
}
|
||||
} else {
|
||||
m_abort[slotIndex] = false;
|
||||
// Transmit an idle message
|
||||
for (unsigned int i = 0U; i < DMR_FRAME_LENGTH_BYTES; i++) {
|
||||
m_poBuffer[i] = m_idle[i];
|
||||
m_markBuffer[i] = MARK_NONE;
|
||||
}
|
||||
}
|
||||
|
||||
m_poLen = DMR_FRAME_LENGTH_BYTES;
|
||||
m_poPtr = 0U;
|
||||
}
|
||||
|
||||
void CDMRTX::createCal()
|
||||
{
|
||||
for (unsigned int i = 0U; i < DMR_FRAME_LENGTH_BYTES; i++) {
|
||||
m_poBuffer[i] = 0x5FU; // +3, +3, -3, -3 pattern for deviation cal.
|
||||
m_markBuffer[i] = MARK_NONE;
|
||||
}
|
||||
|
||||
m_poLen = DMR_FRAME_LENGTH_BYTES;
|
||||
m_poPtr = 0U;
|
||||
}
|
||||
|
||||
void CDMRTX::createCACH(uint8_t txSlotIndex, uint8_t rxSlotIndex)
|
||||
{
|
||||
m_frameCount++;
|
||||
|
||||
if (m_cachPtr >= 12U)
|
||||
m_cachPtr = 0U;
|
||||
|
||||
if (m_cachPtr == 0U) {
|
||||
if (m_fifo[0U].getData() == 0U && m_fifo[1U].getData() == 0U)
|
||||
::memcpy(m_shortLC, EMPTY_SHORT_LC, 12U);
|
||||
else
|
||||
::memcpy(m_shortLC, m_newShortLC, 12U);
|
||||
}
|
||||
|
||||
::memcpy(m_poBuffer, m_shortLC + m_cachPtr, 3U);
|
||||
m_markBuffer[0U] = MARK_NONE;
|
||||
m_markBuffer[1U] = MARK_NONE;
|
||||
m_markBuffer[2U] = rxSlotIndex == 1U ? MARK_SLOT1 : MARK_SLOT2;
|
||||
|
||||
bool at = false;
|
||||
if (m_frameCount >= STARTUP_COUNT)
|
||||
at = m_fifo[rxSlotIndex].getData() > 0U;
|
||||
bool tc = txSlotIndex == 1U;
|
||||
bool ls0 = true; // For 1 and 2
|
||||
bool ls1 = true;
|
||||
|
||||
if (m_cachPtr == 0U) // For 0
|
||||
ls1 = false;
|
||||
else if (m_cachPtr == 9U) // For 3
|
||||
ls0 = false;
|
||||
|
||||
bool h0 = at ^ tc ^ ls1;
|
||||
bool h1 = tc ^ ls1 ^ ls0;
|
||||
bool h2 = at ^ tc ^ ls0;
|
||||
|
||||
m_poBuffer[0U] |= at ? 0x80U : 0x00U;
|
||||
m_poBuffer[0U] |= tc ? 0x08U : 0x00U;
|
||||
m_poBuffer[1U] |= ls1 ? 0x80U : 0x00U;
|
||||
m_poBuffer[1U] |= ls0 ? 0x08U : 0x00U;
|
||||
m_poBuffer[1U] |= h0 ? 0x02U : 0x00U;
|
||||
m_poBuffer[2U] |= h1 ? 0x20U : 0x00U;
|
||||
m_poBuffer[2U] |= h2 ? 0x02U : 0x00U;
|
||||
|
||||
m_poLen = DMR_CACH_LENGTH_BYTES;
|
||||
m_poPtr = 0U;
|
||||
|
||||
m_cachPtr += 3U;
|
||||
}
|
||||
|
||||
void CDMRTX::setColorCode(uint8_t colorCode)
|
||||
{
|
||||
::memcpy(m_idle, IDLE_DATA, DMR_FRAME_LENGTH_BYTES);
|
||||
|
||||
CDMRSlotType slotType;
|
||||
slotType.encode(colorCode, DT_IDLE, m_idle);
|
||||
}
|
||||
|
||||
#endif
|
||||
83
DMRTX.h
Normal file
83
DMRTX.h
Normal file
|
|
@ -0,0 +1,83 @@
|
|||
/*
|
||||
* Copyright (C) 2015,2016,2017 by Jonathan Naylor G4KLX
|
||||
* Copyright (C) 2016 by Colin Durbridge G4EML
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#if !defined(DMRTX_H)
|
||||
#define DMRTX_H
|
||||
|
||||
#if defined(DUPLEX)
|
||||
|
||||
#include "Config.h"
|
||||
#include "DMRDefines.h"
|
||||
|
||||
#include "SerialRB.h"
|
||||
|
||||
enum DMRTXSTATE {
|
||||
DMRTXSTATE_IDLE,
|
||||
DMRTXSTATE_SLOT1,
|
||||
DMRTXSTATE_CACH1,
|
||||
DMRTXSTATE_SLOT2,
|
||||
DMRTXSTATE_CACH2,
|
||||
DMRTXSTATE_CAL
|
||||
};
|
||||
|
||||
class CDMRTX {
|
||||
public:
|
||||
CDMRTX();
|
||||
|
||||
uint8_t writeData1(const uint8_t* data, uint8_t length);
|
||||
uint8_t writeData2(const uint8_t* data, uint8_t length);
|
||||
|
||||
uint8_t writeShortLC(const uint8_t* data, uint8_t length);
|
||||
uint8_t writeAbort(const uint8_t* data, uint8_t length);
|
||||
|
||||
void setStart(bool start);
|
||||
void setCal(bool start);
|
||||
|
||||
void process();
|
||||
|
||||
uint8_t getSpace1() const;
|
||||
uint8_t getSpace2() const;
|
||||
|
||||
void setColorCode(uint8_t colorCode);
|
||||
|
||||
private:
|
||||
CSerialRB m_fifo[2U];
|
||||
arm_fir_interpolate_instance_q15 m_modFilter;
|
||||
q15_t m_modState[16U]; // blockSize + phaseLength - 1, 4 + 9 - 1 plus some spare
|
||||
DMRTXSTATE m_state;
|
||||
uint8_t m_idle[DMR_FRAME_LENGTH_BYTES];
|
||||
uint8_t m_cachPtr;
|
||||
uint8_t m_shortLC[12U];
|
||||
uint8_t m_newShortLC[12U];
|
||||
uint8_t m_markBuffer[40U];
|
||||
uint8_t m_poBuffer[40U];
|
||||
uint16_t m_poLen;
|
||||
uint16_t m_poPtr;
|
||||
uint32_t m_frameCount;
|
||||
bool m_abort[2U];
|
||||
|
||||
void createData(uint8_t slotIndex);
|
||||
void createCACH(uint8_t txSlotIndex, uint8_t rxSlotIndex);
|
||||
void createCal();
|
||||
void writeByte(uint8_t c, uint8_t control);
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
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