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Modem.cpp
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Modem.cpp
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/*
* Copyright (C) 2011-2018,2020 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.
*/
#include "I2CController.h"
#include "DMRDefines.h"
#include "POCSAGDefines.h"
#include "Modem.h"
#include "NullModem.h"
#include "Utils.h"
#include "Log.h"
#include <cmath>
#include <cstdio>
#include <cassert>
#include <cstdint>
#include <ctime>
#include <unistd.h>
const unsigned char MMDVM_FRAME_START = 0xE0U;
const unsigned char MMDVM_GET_VERSION = 0x00U;
const unsigned char MMDVM_GET_STATUS = 0x01U;
const unsigned char MMDVM_SET_CONFIG = 0x02U;
const unsigned char MMDVM_SET_MODE = 0x03U;
const unsigned char MMDVM_SET_FREQ = 0x04U;
const unsigned char MMDVM_SEND_CWID = 0x0AU;
const unsigned char MMDVM_DMR_DATA1 = 0x18U;
const unsigned char MMDVM_DMR_LOST1 = 0x19U;
const unsigned char MMDVM_DMR_DATA2 = 0x1AU;
const unsigned char MMDVM_DMR_LOST2 = 0x1BU;
const unsigned char MMDVM_DMR_SHORTLC = 0x1CU;
const unsigned char MMDVM_DMR_START = 0x1DU;
const unsigned char MMDVM_DMR_ABORT = 0x1EU;
const unsigned char MMDVM_POCSAG_DATA = 0x50U;
const unsigned char MMDVM_ACK = 0x70U;
const unsigned char MMDVM_NAK = 0x7FU;
const unsigned char MMDVM_SERIAL = 0x80U;
const unsigned char MMDVM_TRANSPARENT = 0x90U;
const unsigned char MMDVM_QSO_INFO = 0x91U;
const unsigned char MMDVM_DEBUG1 = 0xF1U;
const unsigned char MMDVM_DEBUG2 = 0xF2U;
const unsigned char MMDVM_DEBUG3 = 0xF3U;
const unsigned char MMDVM_DEBUG4 = 0xF4U;
const unsigned char MMDVM_DEBUG5 = 0xF5U;
const unsigned int MAX_RESPONSES = 30U;
const unsigned int BUFFER_LENGTH = 2000U;
const unsigned char CAP1_DMR = 0x02U;
const unsigned char CAP2_POCSAG = 0x01U;
CModem::CModem(const std::string& port, bool duplex, bool rxInvert, bool txInvert, bool pttInvert, unsigned int txDelay, unsigned int dmrDelay, bool trace, bool debug) :
m_port(port),
m_protocolVersion(0U),
m_dmrColorCode(0U),
m_duplex(duplex),
m_rxInvert(rxInvert),
m_txInvert(txInvert),
m_pttInvert(pttInvert),
m_txDelay(txDelay),
m_dmrDelay(dmrDelay),
m_rxLevel(0.0F),
m_cwIdTXLevel(0.0F),
m_dmrTXLevel(0.0F),
m_pocsagTXLevel(0.0F),
m_rfLevel(0.0F),
m_trace(trace),
m_debug(debug),
m_rxFrequency(0U),
m_txFrequency(0U),
m_pocsagFrequency(0U),
m_dmrEnabled(false),
m_pocsagEnabled(false),
m_rxDCOffset(0),
m_txDCOffset(0),
m_serial(NULL),
m_buffer(NULL),
m_length(0U),
m_offset(0U),
m_rxDMRData1(1000U, "Modem RX DMR1"),
m_rxDMRData2(1000U, "Modem RX DMR2"),
m_txDMRData1(1000U, "Modem TX DMR1"),
m_txDMRData2(1000U, "Modem TX DMR2"),
m_txPOCSAGData(1000U, "Modem TX POCSAG"),
m_rxTransparentData(1000U, "Modem RX Transparent"),
m_txTransparentData(1000U, "Modem TX Transparent"),
m_sendTransparentDataFrameType(0U),
m_statusTimer(1000U, 0U, 250U),
m_inactivityTimer(1000U, 2U),
m_playoutTimer(1000U, 0U, 10U),
m_dmrSpace1(0U),
m_dmrSpace2(0U),
m_pocsagSpace(0U),
m_tx(false),
m_error(false),
m_mode(MODE_IDLE),
m_hwType("MMDVM_Unknown"),
m_capabilities1(0x00U),
m_capabilities2(0x00U)
{
m_buffer = new unsigned char[BUFFER_LENGTH];
assert(!port.empty());
}
CModem::~CModem()
{
delete m_serial;
delete[] m_buffer;
}
void CModem::setSerialParams(const std::string& protocol, unsigned int address)
{
// Create the serial controller instance according the protocol specified in conf.
#if defined(__linux__)
if (protocol == "i2c")
m_serial = new CI2CController(m_port, 115200, address, true);
else
#endif
m_serial = new CSerialController(m_port, 115200, true);
}
void CModem::setRFParams(unsigned int rxFrequency, int rxOffset, unsigned int txFrequency, int txOffset, int txDCOffset, int rxDCOffset, float rfLevel, unsigned int pocsagFrequency)
{
m_rxFrequency = rxFrequency + rxOffset;
m_txFrequency = txFrequency + txOffset;
m_txDCOffset = txDCOffset;
m_rxDCOffset = rxDCOffset;
m_rfLevel = rfLevel;
m_pocsagFrequency = pocsagFrequency + txOffset;
}
void CModem::setModeParams(bool dmrEnabled, bool pocsagEnabled)
{
m_dmrEnabled = dmrEnabled;
m_pocsagEnabled = pocsagEnabled;
}
void CModem::setLevels(float rxLevel, float cwIdTXLevel, float dmrTXLevel, float pocsagTXLevel)
{
m_rxLevel = rxLevel;
m_cwIdTXLevel = cwIdTXLevel;
m_dmrTXLevel = dmrTXLevel;
m_pocsagTXLevel = pocsagTXLevel;
}
void CModem::setDMRParams(unsigned int colorCode)
{
assert(colorCode < 16U);
m_dmrColorCode = colorCode;
}
void CModem::setTransparentDataParams(unsigned int sendFrameType)
{
m_sendTransparentDataFrameType = sendFrameType;
}
bool CModem::open()
{
::LogMessage("Opening the MMDVM");
bool ret = m_serial->open();
if (!ret)
return false;
ret = readVersion();
if (!ret) {
m_serial->close();
delete m_serial;
m_serial = NULL;
return false;
} else {
/* Stopping the inactivity timer here when a firmware version has been
successfuly read prevents the death spiral of "no reply from modem..." */
m_inactivityTimer.stop();
}
ret = setFrequency();
if (!ret) {
m_serial->close();
delete m_serial;
m_serial = NULL;
return false;
}
ret = writeConfig();
if (!ret) {
m_serial->close();
delete m_serial;
m_serial = NULL;
return false;
}
m_statusTimer.start();
m_error = false;
m_offset = 0U;
return true;
}
void CModem::clock(unsigned int ms)
{
assert(m_serial != NULL);
// Poll the modem status every 250ms
m_statusTimer.clock(ms);
if (m_statusTimer.hasExpired()) {
readStatus();
m_statusTimer.start();
}
m_inactivityTimer.clock(ms);
if (m_inactivityTimer.hasExpired()) {
LogError("No reply from the modem for some time, resetting it");
m_error = true;
close();
usleep(2000 * 1000); // 2s
while (!open())
usleep(5000 * 1000); // 5s
}
RESP_TYPE_MMDVM type = getResponse();
if (type == RTM_TIMEOUT) {
// Nothing to do
} else if (type == RTM_ERROR) {
// Nothing to do
} else {
// type == RTM_OK
switch (m_buffer[2U]) {
case MMDVM_DMR_DATA1: {
if (m_trace)
CUtils::dump(1U, "RX DMR Data 1", m_buffer, m_length);
unsigned char data = m_length - 2U;
m_rxDMRData1.addData(&data, 1U);
if (m_buffer[3U] == (DMR_SYNC_DATA | DT_TERMINATOR_WITH_LC))
data = TAG_EOT;
else
data = TAG_DATA;
m_rxDMRData1.addData(&data, 1U);
m_rxDMRData1.addData(m_buffer + 3U, m_length - 3U);
}
break;
case MMDVM_DMR_DATA2: {
if (m_trace)
CUtils::dump(1U, "RX DMR Data 2", m_buffer, m_length);
unsigned char data = m_length - 2U;
m_rxDMRData2.addData(&data, 1U);
if (m_buffer[3U] == (DMR_SYNC_DATA | DT_TERMINATOR_WITH_LC))
data = TAG_EOT;
else
data = TAG_DATA;
m_rxDMRData2.addData(&data, 1U);
m_rxDMRData2.addData(m_buffer + 3U, m_length - 3U);
}
break;
case MMDVM_DMR_LOST1: {
if (m_trace)
CUtils::dump(1U, "RX DMR Lost 1", m_buffer, m_length);
unsigned char data = 1U;
m_rxDMRData1.addData(&data, 1U);
data = TAG_LOST;
m_rxDMRData1.addData(&data, 1U);
}
break;
case MMDVM_DMR_LOST2: {
if (m_trace)
CUtils::dump(1U, "RX DMR Lost 2", m_buffer, m_length);
unsigned char data = 1U;
m_rxDMRData2.addData(&data, 1U);
data = TAG_LOST;
m_rxDMRData2.addData(&data, 1U);
}
break;
case MMDVM_GET_STATUS: {
// if (m_trace)
// CUtils::dump(1U, "GET_STATUS", m_buffer, m_length);
switch (m_protocolVersion) {
case 1U: {
m_mode = m_buffer[4U];
m_tx = (m_buffer[5U] & 0x01U) == 0x01U;
bool adcOverflow = (m_buffer[5U] & 0x02U) == 0x02U;
if (adcOverflow)
LogError("MMDVM ADC levels have overflowed");
bool rxOverflow = (m_buffer[5U] & 0x04U) == 0x04U;
if (rxOverflow)
LogError("MMDVM RX buffer has overflowed");
bool txOverflow = (m_buffer[5U] & 0x08U) == 0x08U;
if (txOverflow)
LogError("MMDVM TX buffer has overflowed");
bool dacOverflow = (m_buffer[5U] & 0x20U) == 0x20U;
if (dacOverflow)
LogError("MMDVM DAC levels have overflowed");
m_dmrSpace1 = m_buffer[7U];
m_dmrSpace2 = m_buffer[8U];
if (m_length > 12U)
m_pocsagSpace = m_buffer[12U];
}
break;
case 2U: {
m_mode = m_buffer[3U];
m_tx = (m_buffer[4U] & 0x01U) == 0x01U;
bool adcOverflow = (m_buffer[4U] & 0x02U) == 0x02U;
if (adcOverflow)
LogError("MMDVM ADC levels have overflowed");
bool rxOverflow = (m_buffer[4U] & 0x04U) == 0x04U;
if (rxOverflow)
LogError("MMDVM RX buffer has overflowed");
bool txOverflow = (m_buffer[4U] & 0x08U) == 0x08U;
if (txOverflow)
LogError("MMDVM TX buffer has overflowed");
bool dacOverflow = (m_buffer[4U] & 0x20U) == 0x20U;
if (dacOverflow)
LogError("MMDVM DAC levels have overflowed");
m_dmrSpace1 = m_buffer[7U];
m_dmrSpace2 = m_buffer[8U];
m_pocsagSpace = m_buffer[16U];
}
break;
default:
m_dmrSpace1 = 0U;
m_dmrSpace2 = 0U;
m_pocsagSpace = 0U;
break;
}
m_inactivityTimer.start();
// LogMessage("status=%02X, tx=%d, space=%u,%u,%u,%u,%u,%u,%u cd=%d", m_buffer[5U], int(m_tx), m_dmrSpace1, m_dmrSpace2, m_pocsagSpace);
}
break;
case MMDVM_TRANSPARENT: {
if (m_trace)
CUtils::dump(1U, "RX Transparent Data", m_buffer, m_length);
unsigned char offset = m_sendTransparentDataFrameType;
if (offset > 1U) offset = 1U;
unsigned char data = m_length - 3U + offset;
m_rxTransparentData.addData(&data, 1U);
m_rxTransparentData.addData(m_buffer + 3U - offset, m_length - 3U + offset);
}
break;
// These should not be received, but don't complain if we do
case MMDVM_GET_VERSION:
case MMDVM_ACK:
break;
case MMDVM_NAK:
LogWarning("Received a NAK from the MMDVM, command = 0x%02X, reason = %u", m_buffer[3U], m_buffer[4U]);
break;
case MMDVM_DEBUG1:
case MMDVM_DEBUG2:
case MMDVM_DEBUG3:
case MMDVM_DEBUG4:
case MMDVM_DEBUG5:
printDebug();
break;
case MMDVM_SERIAL:
//DMRHost does not process serial data from the display,
// so we send it to the transparent port if sendFrameType==1
if (m_sendTransparentDataFrameType > 0U) {
if (m_trace)
CUtils::dump(1U, "RX Serial Data", m_buffer, m_length);
unsigned char offset = m_sendTransparentDataFrameType;
if (offset > 1U) offset = 1U;
unsigned char data = m_length - 3U + offset;
m_rxTransparentData.addData(&data, 1U);
m_rxTransparentData.addData(m_buffer + 3U - offset, m_length - 3U + offset);
break; //only break when sendFrameType>0, else message is unknown
}
default:
LogMessage("Unknown message, type: %02X", m_buffer[2U]);
CUtils::dump("Buffer dump", m_buffer, m_length);
break;
}
}
// Only feed data to the modem if the playout timer has expired
m_playoutTimer.clock(ms);
if (!m_playoutTimer.hasExpired())
return;
if (m_dmrSpace1 > 1U && !m_txDMRData1.isEmpty()) {
unsigned char len = 0U;
m_txDMRData1.getData(&len, 1U);
m_txDMRData1.getData(m_buffer, len);
if (m_trace)
CUtils::dump(1U, "TX DMR Data 1", m_buffer, len);
int ret = m_serial->write(m_buffer, len);
if (ret != int(len))
LogWarning("Error when writing DMR data to the MMDVM");
m_playoutTimer.start();
m_dmrSpace1--;
}
if (m_dmrSpace2 > 1U && !m_txDMRData2.isEmpty()) {
unsigned char len = 0U;
m_txDMRData2.getData(&len, 1U);
m_txDMRData2.getData(m_buffer, len);
if (m_trace)
CUtils::dump(1U, "TX DMR Data 2", m_buffer, len);
int ret = m_serial->write(m_buffer, len);
if (ret != int(len))
LogWarning("Error when writing DMR data to the MMDVM");
m_playoutTimer.start();
m_dmrSpace2--;
}
if (m_pocsagSpace > 1U && !m_txPOCSAGData.isEmpty()) {
unsigned char len = 0U;
m_txPOCSAGData.getData(&len, 1U);
m_txPOCSAGData.getData(m_buffer, len);
if (m_trace)
CUtils::dump(1U, "TX POCSAG Data", m_buffer, len);
int ret = m_serial->write(m_buffer, len);
if (ret != int(len))
LogWarning("Error when writing POCSAG data to the MMDVM");
m_playoutTimer.start();
m_pocsagSpace--;
}
if (!m_txTransparentData.isEmpty()) {
unsigned char len = 0U;
m_txTransparentData.getData(&len, 1U);
m_txTransparentData.getData(m_buffer, len);
if (m_trace)
CUtils::dump(1U, "TX Transparent Data", m_buffer, len);
int ret = m_serial->write(m_buffer, len);
if (ret != int(len))
LogWarning("Error when writing Transparent data to the MMDVM");
}
}
void CModem::close()
{
assert(m_serial != NULL);
::LogMessage("Closing the MMDVM");
m_serial->close();
}
unsigned int CModem::readDMRData1(unsigned char* data)
{
assert(data != NULL);
if (m_rxDMRData1.isEmpty())
return 0U;
unsigned char len = 0U;
m_rxDMRData1.getData(&len, 1U);
m_rxDMRData1.getData(data, len);
return len;
}
unsigned int CModem::readDMRData2(unsigned char* data)
{
assert(data != NULL);
if (m_rxDMRData2.isEmpty())
return 0U;
unsigned char len = 0U;
m_rxDMRData2.getData(&len, 1U);
m_rxDMRData2.getData(data, len);
return len;
}
unsigned int CModem::readTransparentData(unsigned char* data)
{
assert(data != NULL);
if (m_rxTransparentData.isEmpty())
return 0U;
unsigned char len = 0U;
m_rxTransparentData.getData(&len, 1U);
m_rxTransparentData.getData(data, len);
return len;
}
bool CModem::hasDMRSpace1() const
{
unsigned int space = m_txDMRData1.freeSpace() / (DMR_FRAME_LENGTH_BYTES + 4U);
return space > 1U;
}
bool CModem::hasDMRSpace2() const
{
unsigned int space = m_txDMRData2.freeSpace() / (DMR_FRAME_LENGTH_BYTES + 4U);
return space > 1U;
}
bool CModem::writeDMRData1(const unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
if (data[0U] != TAG_DATA && data[0U] != TAG_EOT)
return false;
unsigned char buffer[40U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = length + 2U;
buffer[2U] = MMDVM_DMR_DATA1;
::memcpy(buffer + 3U, data + 1U, length - 1U);
unsigned char len = length + 2U;
m_txDMRData1.addData(&len, 1U);
m_txDMRData1.addData(buffer, len);
return true;
}
bool CModem::writeDMRData2(const unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
if (data[0U] != TAG_DATA && data[0U] != TAG_EOT)
return false;
unsigned char buffer[40U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = length + 2U;
buffer[2U] = MMDVM_DMR_DATA2;
::memcpy(buffer + 3U, data + 1U, length - 1U);
unsigned char len = length + 2U;
m_txDMRData2.addData(&len, 1U);
m_txDMRData2.addData(buffer, len);
return true;
}
bool CModem::hasPOCSAGSpace() const
{
unsigned int space = m_txPOCSAGData.freeSpace() / (POCSAG_FRAME_LENGTH_BYTES + 4U);
return space > 1U;
}
bool CModem::writePOCSAGData(const unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
unsigned char buffer[130U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = length + 3U;
buffer[2U] = MMDVM_POCSAG_DATA;
::memcpy(buffer + 3U, data, length);
unsigned char len = length + 3U;
m_txPOCSAGData.addData(&len, 1U);
m_txPOCSAGData.addData(buffer, len);
return true;
}
bool CModem::writeTransparentData(const unsigned char* data, unsigned int length)
{
assert(data != NULL);
assert(length > 0U);
unsigned char buffer[250U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = length + 3U;
buffer[2U] = MMDVM_TRANSPARENT;
if (m_sendTransparentDataFrameType > 0U) {
::memcpy(buffer + 2U, data, length);
length--;
buffer[1U]--;
//when sendFrameType==1 , only 0x80 and 0x90 (MMDVM_SERIAL and MMDVM_TRANSPARENT) are allowed
// and reverted to default (MMDVM_TRANSPARENT) for any other value
//when >1, frame type is not checked
if (m_sendTransparentDataFrameType == 1U) {
if ((buffer[2U] & 0xE0) != 0x80)
buffer[2U] = MMDVM_TRANSPARENT;
}
} else {
::memcpy(buffer + 3U, data, length);
}
unsigned char len = length + 3U;
m_txTransparentData.addData(&len, 1U);
m_txTransparentData.addData(buffer, len);
return true;
}
bool CModem::hasTX() const
{
return m_tx;
}
bool CModem::hasError() const
{
return m_error;
}
bool CModem::hasDMR() const
{
return (m_capabilities1 & CAP1_DMR) == CAP1_DMR;
}
bool CModem::hasPOCSAG() const
{
return (m_capabilities2 & CAP2_POCSAG) == CAP2_POCSAG;
}
bool CModem::readVersion()
{
assert(m_serial != NULL);
usleep(2000 * 1000); // 2s
for (unsigned int i = 0U; i < 6U; i++) {
unsigned char buffer[3U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = 3U;
buffer[2U] = MMDVM_GET_VERSION;
// CUtils::dump(1U, "Written", buffer, 3U);
int ret = m_serial->write(buffer, 3U);
if (ret != 3)
return false;
for (unsigned int count = 0U; count < MAX_RESPONSES; count++) {
usleep(10 * 1000);
RESP_TYPE_MMDVM resp = getResponse();
if (resp == RTM_OK && m_buffer[2U] == MMDVM_GET_VERSION) {
m_protocolVersion = m_buffer[3U];
switch (m_protocolVersion) {
case 1U:
LogInfo("MMDVM protocol version: %u, description: %.*s", m_protocolVersion, m_length - 4U, m_buffer + 4U);
m_capabilities1 = CAP1_DMR;
m_capabilities2 = CAP2_POCSAG;
break;
case 2U:
LogInfo("MMDVM protocol version: %u, description: %.*s", m_protocolVersion, m_length - 23U, m_buffer + 23U);
switch (m_buffer[6U]) {
case 0U:
LogInfo("CPU: Atmel ARM, UDID: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", m_buffer[7U], m_buffer[8U], m_buffer[9U], m_buffer[10U], m_buffer[11U], m_buffer[12U], m_buffer[13U], m_buffer[14U], m_buffer[15U], m_buffer[16U], m_buffer[17U], m_buffer[18U], m_buffer[19U], m_buffer[20U], m_buffer[21U], m_buffer[22U]);
break;
case 1U:
LogInfo("CPU: NXP ARM, UDID: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", m_buffer[7U], m_buffer[8U], m_buffer[9U], m_buffer[10U], m_buffer[11U], m_buffer[12U], m_buffer[13U], m_buffer[14U], m_buffer[15U], m_buffer[16U], m_buffer[17U], m_buffer[18U], m_buffer[19U], m_buffer[20U], m_buffer[21U], m_buffer[22U]);
break;
case 2U:
LogInfo("CPU: ST-Micro ARM, UDID: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", m_buffer[7U], m_buffer[8U], m_buffer[9U], m_buffer[10U], m_buffer[11U], m_buffer[12U], m_buffer[13U], m_buffer[14U], m_buffer[15U], m_buffer[16U], m_buffer[17U], m_buffer[18U]);
break;
default:
LogInfo("CPU: Unknown type: %u", m_buffer[6U]);
break;
}
m_capabilities1 = m_buffer[4U];
m_capabilities2 = m_buffer[5U];
char modeText[100U];
::strcpy(modeText, "Modes:");
if (hasDMR())
::strcat(modeText, " DMR");
if (hasPOCSAG())
::strcat(modeText, " POCSAG");
LogInfo(modeText);
break;
default:
LogError("MMDVM protocol version: %u, unsupported by this version of the MMDVM Host", m_protocolVersion);
return false;
}
char _hwType[40U];
::strcpy(_hwType, "MMDVM_Unknown");
if (::memcmp(m_buffer + 4U, "MMDVM ", 6U) == 0)
::strcpy(_hwType, "MMDVM");
else if (::memcmp(m_buffer + 4U, "DVMEGA ", 7U) == 0)
::strcpy(_hwType, "MMDVM_DVMega");
else {
char* hw = NULL;
if (m_protocolVersion == 1)
hw = ::strtok((char*)m_buffer + 4U, "-");
if (m_protocolVersion == 2)
hw = ::strtok((char*)m_buffer + 23U, "-");
// we do not trust the modem fw too much
if (hw != NULL) {
::strcpy(_hwType, "MMDVM_");
::strncat(_hwType, hw, 40U - 6U);
}
}
m_hwType = strdup(_hwType);
return true;
}
}
usleep(1500 * 1000);
}
LogError("Unable to read the firmware version after six attempts");
return false;
}
bool CModem::readStatus()
{
assert(m_serial != NULL);
unsigned char buffer[3U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = 3U;
buffer[2U] = MMDVM_GET_STATUS;
// CUtils::dump(1U, "Written", buffer, 3U);
return m_serial->write(buffer, 3U) == 3;
}
bool CModem::writeConfig()
{
switch (m_protocolVersion) {
case 1U:
return setConfig1();
case 2U:
return setConfig2();
default:
return false;
}
}
bool CModem::setConfig1()
{
assert(m_serial != NULL);
unsigned char buffer[30U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = 26U;
buffer[2U] = MMDVM_SET_CONFIG;
buffer[3U] = 0x00U;
if (m_rxInvert)
buffer[3U] |= 0x01U;
if (m_txInvert)
buffer[3U] |= 0x02U;
if (m_pttInvert)
buffer[3U] |= 0x04U;
if (m_debug)
buffer[3U] |= 0x10U;
if (!m_duplex)
buffer[3U] |= 0x80U;
buffer[4U] = 0x00U;
if (m_dmrEnabled)
buffer[4U] |= 0x02U;
if (m_pocsagEnabled)
buffer[4U] |= 0x20U;
buffer[5U] = m_txDelay / 10U; // In 10ms units
buffer[6U] = MODE_IDLE;
buffer[7U] = (unsigned char)(m_rxLevel * 2.55F + 0.5F);
buffer[8U] = (unsigned char)(m_cwIdTXLevel * 2.55F + 0.5F);
buffer[9U] = m_dmrColorCode;
buffer[10U] = m_dmrDelay;
buffer[11U] = 128U; // Was OscOffset
buffer[12U] = 0x00U;
buffer[13U] = (unsigned char)(m_dmrTXLevel * 2.55F + 0.5F);
buffer[14U] = 0x00U;
buffer[15U] = 0x00U;
buffer[16U] = (unsigned char)(m_txDCOffset + 128);
buffer[17U] = (unsigned char)(m_rxDCOffset + 128);
buffer[18U] = 0x00U;
buffer[19U] = 0x00U;
buffer[20U] = (unsigned char)(m_pocsagTXLevel * 2.55F + 0.5F);
buffer[21U] = 0x00U;
buffer[22U] = 0x00U;
buffer[23U] = 0x00U;
buffer[24U] = 0x00U;
buffer[25U] = 0x00U;
// CUtils::dump(1U, "Written", buffer, 26U);
int ret = m_serial->write(buffer, 26U);
if (ret != 26)
return false;
unsigned int count = 0U;
RESP_TYPE_MMDVM resp;
do {
usleep(10 * 1000);
resp = getResponse();
if (resp == RTM_OK && m_buffer[2U] != MMDVM_ACK && m_buffer[2U] != MMDVM_NAK) {
count++;
if (count >= MAX_RESPONSES) {
LogError("The MMDVM is not responding to the SET_CONFIG command");
return false;
}
}
} while (resp == RTM_OK && m_buffer[2U] != MMDVM_ACK && m_buffer[2U] != MMDVM_NAK);
// CUtils::dump(1U, "Response", m_buffer, m_length);
if (resp == RTM_OK && m_buffer[2U] == MMDVM_NAK) {
LogError("Received a NAK to the SET_CONFIG command from the modem");
return false;
}
m_playoutTimer.start();
return true;
}
bool CModem::setConfig2()
{
assert(m_serial != NULL);
unsigned char buffer[50U];
buffer[0U] = MMDVM_FRAME_START;
buffer[1U] = 40U;
buffer[2U] = MMDVM_SET_CONFIG;
buffer[3U] = 0x00U;
if (m_rxInvert)
buffer[3U] |= 0x01U;
if (m_txInvert)
buffer[3U] |= 0x02U;
if (m_pttInvert)
buffer[3U] |= 0x04U;
if (m_debug)
buffer[3U] |= 0x10U;
if (!m_duplex)
buffer[3U] |= 0x80U;
buffer[4U] = 0x00U;
if (m_dmrEnabled)
buffer[4U] |= 0x02U;
buffer[5U] = 0x00U;
if (m_pocsagEnabled)
buffer[5U] |= 0x01U;
buffer[6U] = m_txDelay / 10U; // In 10ms units
buffer[7U] = MODE_IDLE;
buffer[8U] = (unsigned char)(m_txDCOffset + 128);
buffer[9U] = (unsigned char)(m_rxDCOffset + 128);
buffer[10U] = (unsigned char)(m_rxLevel * 2.55F + 0.5F);
buffer[11U] = (unsigned char)(m_cwIdTXLevel * 2.55F + 0.5F);
buffer[12U] = 0x00U;
buffer[13U] = (unsigned char)(m_dmrTXLevel * 2.55F + 0.5F);
buffer[14U] = 0x00U;
buffer[15U] = 0x00U;
buffer[16U] = 0x00U;
buffer[17U] = 0x00U;
buffer[18U] = (unsigned char)(m_pocsagTXLevel * 2.55F + 0.5F);
buffer[19U] = 0x00U;
buffer[20U] = 0x00U;
buffer[21U] = 0x00U;
buffer[22U] = 0x00U;
buffer[23U] = 0x00U;
buffer[24U] = 0x00U;
buffer[25U] = 0x00U;
buffer[26U] = 0x00U;
buffer[27U] = 0x00U;
buffer[28U] = 0x00U;
buffer[29U] = m_dmrColorCode;
buffer[30U] = m_dmrDelay;
buffer[31U] = 0x86U; // wtf is this. m_ax25RXTwist 128 + default value 6. required by firmware even if ax25 is disabled
buffer[32U] = 0x00U;
buffer[33U] = 0x00U;
buffer[34U] = 0x00U;
buffer[35U] = 0x00U;
buffer[36U] = 0x00U;
buffer[37U] = 0x00U;
buffer[38U] = 0x00U;
buffer[39U] = 0x00U;
// CUtils::dump(1U, "Written", buffer, 40U);
int ret = m_serial->write(buffer, 40U);
if (ret != 40)