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SerialPort.cpp
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Digital Voice Modem - Hotspot Firmware
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright (C) 2013,2015,2016,2018,2020,2021 Jonathan Naylor, G4KLX
* Copyright (C) 2016 Colin Durbridge, G4EML
* Copyright (C) 2016,2017,2018,2019 Andy Uribe, CA6JAU
* Copyright (C) 2019 Florian Wolters, DF2ET
* Copyright (C) 2017-2024 Bryan Biedenkapp, N2PLL
*
*/
#include "Globals.h"
#include "SerialPort.h"
// ---------------------------------------------------------------------------
// Constants
// ---------------------------------------------------------------------------
#define concat(a, b, c) a " (build " b " " c ")"
const char HARDWARE[] = concat(DESCRIPTION, __TIME__, __DATE__);
const uint8_t PROTOCOL_VERSION = 4U;
// ---------------------------------------------------------------------------
// Public Class Members
// ---------------------------------------------------------------------------
/* Initializes a new instance of the SerialPort class. */
SerialPort::SerialPort() :
m_buffer(),
m_ptr(0U),
m_len(0U),
m_dblFrame(false),
m_debug(false)
{
// stub
}
/* Starts serial port communications. */
void SerialPort::start()
{
beginInt(1U, SERIAL_SPEED);
}
/* Process data from serial port. */
void SerialPort::process()
{
while (availableInt(1U)) {
uint8_t c = readInt(1U);
if (m_ptr == 0U) {
if (c == DVM_SHORT_FRAME_START) {
// Handle the frame start correctly
m_buffer[0U] = c;
m_ptr = 1U;
m_len = 0U;
m_dblFrame = false;
}
else if (c == DVM_LONG_FRAME_START) {
// Handle the frame start correctly
m_buffer[0U] = c;
m_ptr = 1U;
m_len = 0U;
m_dblFrame = true;
}
else {
m_ptr = 0U;
m_len = 0U;
}
}
else if (m_ptr == 1U) {
// Handle the frame length
if (m_dblFrame) {
m_buffer[m_ptr] = c;
m_len = ((c & 0xFFU) << 8);
} else {
m_len = m_buffer[m_ptr] = c;
}
m_ptr = 2U;
}
else if (m_ptr == 2U && m_dblFrame) {
// Handle the frame length
m_buffer[m_ptr] = c;
m_len = (m_len + (c & 0xFFU));
m_ptr = 3U;
}
else {
// Any other bytes are added to the buffer
m_buffer[m_ptr] = c;
m_ptr++;
// The full packet has been received, process it
if (m_ptr == m_len) {
uint8_t err = 2U;
uint8_t offset = 2U;
if (m_dblFrame)
offset = 3U;
// DEBUG4("m_buffer [b0 - b2]", m_buffer[0], m_buffer[1], m_buffer[2]);
// DEBUG4("m_buffer [b3 - b5]", m_buffer[3], m_buffer[4], m_buffer[5]);
switch (m_buffer[offset]) {
case CMD_GET_STATUS:
getStatus();
break;
case CMD_GET_VERSION:
getVersion();
break;
case CMD_SET_CONFIG:
err = setConfig(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK)
sendACK();
else
sendNAK(err);
break;
case CMD_SET_MODE:
err = setMode(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK)
sendACK();
else
sendNAK(err);
break;
case CMD_SET_SYMLVLADJ:
sendACK(); // CMD_SET_RXLEVEL not supported by HS
break;
case CMD_SET_RXLEVEL:
sendACK(); // CMD_SET_RXLEVEL not supported by HS
break;
case CMD_SET_RFPARAMS:
err = setRFParams(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK)
sendACK();
else
sendNAK(err);
break;
case CMD_CAL_DATA:
if (m_modemState == STATE_DMR_DMO_CAL_1K || m_modemState == STATE_DMR_CAL_1K ||
m_modemState == STATE_DMR_LF_CAL || m_modemState == STATE_DMR_CAL)
err = calDMR.write(m_buffer + 3U, m_len - 3U);
if (m_modemState == STATE_P25_CAL_1K || m_modemState == STATE_P25_CAL)
err = calP25.write(m_buffer + 3U, m_len - 3U);
if (m_modemState == STATE_NXDN_CAL)
err = calNXDN.write(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK)
{
sendACK();
}
else {
DEBUG2("SerialPort::process() received invalid calibration data", err);
sendNAK(err);
}
break;
case CMD_FLSH_READ:
flashRead();
break;
case CMD_FLSH_WRITE:
err = flashWrite(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK) {
sendACK();
}
else {
DEBUG2("SerialPort::process() received invalid data to write to flash", err);
sendNAK(err);
}
break;
case CMD_RESET_MCU:
io.resetMCU();
break;
case CMD_SET_BUFFERS:
err = setBuffers(m_buffer + 3U, m_len - 3U);
if (err == RSN_OK) {
sendACK();
}
else {
DEBUG2("SerialPort::process() received invalid data to set buffers", err);
sendNAK(err);
}
break;
/** CW */
case CMD_SEND_CWID:
err = RSN_RINGBUFF_FULL;
if (m_modemState == STATE_IDLE) {
m_cwIdState = true;
DEBUG2("SerialPort::process() setting modem state", STATE_CW);
io.rf1Conf(STATE_CW, true);
err = cwIdTX.write(m_buffer + 3U, m_len - 3U);
}
if (err != RSN_OK) {
DEBUG2("SerialPort::process() invalid CW Id data", err);
sendNAK(err);
}
break;
/** Digital Mobile Radio */
case CMD_DMR_DATA1:
#if defined(DUPLEX)
if (m_dmrEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_DMR) {
if (m_duplex)
err = dmrTX.writeData1(m_buffer + 3U, m_len - 3U);
}
}
if (err == RSN_OK) {
if (m_modemState == STATE_IDLE)
setMode(STATE_DMR);
}
else {
DEBUG2("SerialPort::process() received invalid DMR data", err);
sendNAK(err);
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_DATA2:
if (m_dmrEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_DMR) {
#if defined(DUPLEX)
if (m_duplex)
err = dmrTX.writeData2(m_buffer + 3U, m_len - 3U);
else
err = dmrDMOTX.writeData(m_buffer + 3U, m_len - 3U);
#else
err = dmrDMOTX.writeData(m_buffer + 3U, m_len - 3U);
#endif
}
}
if (err == RSN_OK) {
if (m_modemState == STATE_IDLE)
setMode(STATE_DMR);
}
else {
DEBUG2("SerialPort::process() received invalid DMR data", err);
sendNAK(err);
}
break;
case CMD_DMR_START:
#if defined(DUPLEX)
if (m_dmrEnable) {
err = RSN_INVALID_DMR_START;
if (m_len == 4U) {
if (m_buffer[3U] == 0x01U && m_modemState == STATE_DMR) {
if (!m_tx)
dmrTX.setStart(true);
err = RSN_OK;
}
else if (m_buffer[3U] == 0x00U && m_modemState == STATE_DMR) {
if (m_tx)
dmrTX.setStart(false);
err = RSN_OK;
}
}
}
if (err != RSN_OK) {
DEBUG3("SerialPort::process() received invalid DMR start", err, m_len);
sendNAK(err);
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_SHORTLC:
#if defined(DUPLEX)
if (m_dmrEnable)
err = dmrTX.writeShortLC(m_buffer + 3U, m_len - 3U);
if (err != RSN_OK) {
DEBUG2("SerialPort::process() received invalid DMR Short LC", err);
sendNAK(err);
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_ABORT:
#if defined(DUPLEX)
if (m_dmrEnable)
err = dmrTX.writeAbort(m_buffer + 3U, m_len - 3U);
if (err != RSN_OK) {
DEBUG2("SerialPort::process() received invalid DMR Abort", err);
sendNAK(err);
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_CACH_AT_CTRL:
#if defined(DUPLEX)
if (m_dmrEnable) {
err = RSN_INVALID_REQUEST;
if (m_len == 4U) {
dmrTX.setIgnoreCACH_AT(m_buffer[3U]);
err = RSN_OK;
}
}
if (err != RSN_OK) {
DEBUG2("SerialPort::process() received invalid DMR CACH AT Control", err);
sendNAK(err);
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_CLEAR1:
#if defined(DUPLEX)
if (m_dmrEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_P25)
dmrTX.resetFifo1();
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
case CMD_DMR_CLEAR2:
#if defined(DUPLEX)
if (m_dmrEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_P25)
dmrTX.resetFifo2();
}
#else
sendNAK(RSN_INVALID_REQUEST);
#endif
break;
/** Project 25 */
case CMD_P25_DATA:
if (m_p25Enable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_P25)
err = p25TX.writeData(m_buffer + 3U, m_len - 3U);
}
if (err == RSN_OK) {
if (m_modemState == STATE_IDLE)
setMode(STATE_P25);
}
else {
DEBUG2("SerialPort::process() received invalid P25 data", err);
sendNAK(err);
}
break;
case CMD_P25_CLEAR:
if (m_p25Enable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_P25)
p25TX.clear();
}
break;
/** Next Generation Digital Narrowband */
case CMD_NXDN_DATA:
if (m_nxdnEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_NXDN)
err = nxdnTX.writeData(m_buffer + 3U, m_len - 3U);
}
if (err == RSN_OK) {
if (m_modemState == STATE_IDLE)
setMode(STATE_NXDN);
}
else {
DEBUG2("SerialPort::process() received invalid NXDN data", err);
sendNAK(err);
}
break;
case CMD_NXDN_CLEAR:
if (m_nxdnEnable) {
if (m_modemState == STATE_IDLE || m_modemState == STATE_P25)
nxdnTX.clear();
}
break;
default:
// Handle this, send a NAK back
sendNAK(RSN_NAK);
break;
}
m_ptr = 0U;
m_len = 0U;
m_dblFrame = false;
}
}
}
if (io.getWatchdog() >= 48000U) {
m_ptr = 0U;
m_len = 0U;
m_dblFrame = false;
}
}
/* Helper to check if the modem is in a calibration state. */
bool SerialPort::isCalState(DVM_STATE state)
{
// calibration mode check
if (state == STATE_P25_CAL_1K ||
state == STATE_DMR_DMO_CAL_1K || state == STATE_DMR_CAL_1K ||
state == STATE_DMR_LF_CAL ||
state == STATE_RSSI_CAL ||
state == STATE_P25_CAL || state == STATE_DMR_CAL || state == STATE_NXDN_CAL ||
state == STATE_INT_CAL) {
return true;
}
return false;
}
/* Helper to determine digital mode if the modem is in a calibration state. */
DVM_STATE SerialPort::calRelativeState(DVM_STATE state)
{
if (isCalState(state)) {
if (state == STATE_DMR_DMO_CAL_1K || state == STATE_DMR_CAL_1K ||
state == STATE_DMR_LF_CAL || state == STATE_DMR_CAL ||
state == STATE_RSSI_CAL || state == STATE_INT_CAL) {
return STATE_DMR;
} else if (state == STATE_P25_CAL_1K ||
state == STATE_P25_CAL) {
return STATE_P25;
} else if (state == STATE_NXDN_CAL) {
return STATE_NXDN;
}
}
return STATE_CW;
}
/* Write DMR frame data to serial port. */
void SerialPort::writeDMRData(bool slot, const uint8_t* data, uint8_t length)
{
if (m_modemState != STATE_DMR && m_modemState != STATE_IDLE)
return;
if (!m_dmrEnable)
return;
if (length + 3U > 40U) {
m_buffer[2U] = slot ? CMD_DMR_DATA2 : CMD_DMR_DATA1;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[40U];
::memset(reply, 0x00U, 40U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = slot ? CMD_DMR_DATA2 : CMD_DMR_DATA1;
::memcpy(reply + 3U, data, length);
writeInt(1U, reply, length + 3U);
}
/* Write lost DMR frame data to serial port. */
void SerialPort::writeDMRLost(bool slot)
{
if (m_modemState != STATE_DMR && m_modemState != STATE_IDLE)
return;
if (!m_dmrEnable)
return;
uint8_t reply[3U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 3U;
reply[2U] = slot ? CMD_DMR_LOST2 : CMD_DMR_LOST1;
writeInt(1U, reply, 3);
}
/* Write P25 frame data to serial port. */
void SerialPort::writeP25Data(const uint8_t* data, uint16_t length)
{
if (m_modemState != STATE_P25 && m_modemState != STATE_IDLE)
return;
if (!m_p25Enable)
return;
if (length + 4U > 520U) {
m_buffer[2U] = CMD_P25_DATA;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[520U];
::memset(reply, 0x00U, 520U);
if (length < 252U) {
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = CMD_P25_DATA;
::memcpy(reply + 3U, data, length);
writeInt(1U, reply, length + 3U);
}
else {
length += 4U;
reply[0U] = DVM_LONG_FRAME_START;
reply[1U] = (length >> 8U) & 0xFFU;
reply[2U] = (length & 0xFFU);
reply[3U] = CMD_P25_DATA;
::memcpy(reply + 4U, data, length);
writeInt(1U, reply, length + 4U);
}
}
/* Write lost P25 frame data to serial port. */
void SerialPort::writeP25Lost()
{
if (m_modemState != STATE_P25 && m_modemState != STATE_IDLE)
return;
if (!m_p25Enable)
return;
uint8_t reply[3U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 3U;
reply[2U] = CMD_P25_LOST;
writeInt(1U, reply, 3);
}
/* Write NXDN frame data to serial port. */
void SerialPort::writeNXDNData(const uint8_t* data, uint8_t length)
{
if (m_modemState != STATE_NXDN && m_modemState != STATE_IDLE)
return;
if (!m_nxdnEnable)
return;
if (length + 3U > 130U) {
m_buffer[2U] = CMD_NXDN_DATA;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = CMD_NXDN_DATA;
::memcpy(reply + 3U, data, length);
writeInt(1U, reply, length + 3U);
}
/* Write lost NXDN frame data to serial port. */
void SerialPort::writeNXDNLost()
{
if (m_modemState != STATE_NXDN && m_modemState != STATE_IDLE)
return;
if (!m_nxdnEnable)
return;
uint8_t reply[3U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 3U;
reply[2U] = CMD_NXDN_LOST;
writeInt(1U, reply, 3);
}
/* Write calibration frame data to serial port. */
void SerialPort::writeCalData(const uint8_t* data, uint8_t length)
{
if (length + 3U > 130U) {
m_buffer[2U] = CMD_CAL_DATA;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = CMD_CAL_DATA;
::memcpy(reply + 3U, data, length);
writeInt(1U, reply, length + 3U);
}
/* Write RSSI frame data to serial port. */
void SerialPort::writeRSSIData(const uint8_t* data, uint8_t length)
{
if (m_modemState != STATE_RSSI_CAL)
return;
if (length + 3U > 30U) {
m_buffer[2U] = CMD_RSSI_DATA;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[30U];
::memset(reply, 0x00U, 30U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = CMD_RSSI_DATA;
::memcpy(reply + 3U, data, length);
writeInt(1U, reply, length + 3U);
}
/* */
void SerialPort::writeDebug(const char* text)
{
if (!m_debug)
return;
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_DEBUG1;
uint8_t count = 3U;
for (uint8_t i = 0U; text[i] != '\0'; i++, count++)
reply[count] = text[i];
reply[1U] = count;
writeInt(1U, reply, count, true);
}
/* */
void SerialPort::writeDebug(const char* text, int16_t n1)
{
if (!m_debug)
return;
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_DEBUG2;
uint8_t count = 3U;
for (uint8_t i = 0U; text[i] != '\0'; i++, count++)
reply[count] = text[i];
reply[count++] = (n1 >> 8) & 0xFF;
reply[count++] = (n1 >> 0) & 0xFF;
reply[1U] = count;
writeInt(1U, reply, count, true);
}
/* */
void SerialPort::writeDebug(const char* text, int16_t n1, int16_t n2)
{
if (!m_debug)
return;
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_DEBUG3;
uint8_t count = 3U;
for (uint8_t i = 0U; text[i] != '\0'; i++, count++)
reply[count] = text[i];
reply[count++] = (n1 >> 8) & 0xFF;
reply[count++] = (n1 >> 0) & 0xFF;
reply[count++] = (n2 >> 8) & 0xFF;
reply[count++] = (n2 >> 0) & 0xFF;
reply[1U] = count;
writeInt(1U, reply, count, true);
}
/* */
void SerialPort::writeDebug(const char* text, int16_t n1, int16_t n2, int16_t n3)
{
if (!m_debug)
return;
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_DEBUG4;
uint8_t count = 3U;
for (uint8_t i = 0U; text[i] != '\0'; i++, count++)
reply[count] = text[i];
reply[count++] = (n1 >> 8) & 0xFF;
reply[count++] = (n1 >> 0) & 0xFF;
reply[count++] = (n2 >> 8) & 0xFF;
reply[count++] = (n2 >> 0) & 0xFF;
reply[count++] = (n3 >> 8) & 0xFF;
reply[count++] = (n3 >> 0) & 0xFF;
reply[1U] = count;
writeInt(1U, reply, count, true);
}
/* */
void SerialPort::writeDebug(const char* text, int16_t n1, int16_t n2, int16_t n3, int16_t n4)
{
if (!m_debug)
return;
uint8_t reply[130U];
::memset(reply, 0x00U, 130U);
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_DEBUG5;
uint8_t count = 3U;
for (uint8_t i = 0U; text[i] != '\0'; i++, count++)
reply[count] = text[i];
reply[count++] = (n1 >> 8) & 0xFF;
reply[count++] = (n1 >> 0) & 0xFF;
reply[count++] = (n2 >> 8) & 0xFF;
reply[count++] = (n2 >> 0) & 0xFF;
reply[count++] = (n3 >> 8) & 0xFF;
reply[count++] = (n3 >> 0) & 0xFF;
reply[count++] = (n4 >> 8) & 0xFF;
reply[count++] = (n4 >> 0) & 0xFF;
reply[1U] = count;
writeInt(1U, reply, count, true);
}
/* */
void SerialPort::writeDump(const uint8_t* data, uint16_t length)
{
if (!m_debug)
return;
if (length + 4U > 516U) {
m_buffer[2U] = CMD_DEBUG_DUMP;
sendNAK(RSN_ILLEGAL_LENGTH);
return;
}
uint8_t reply[516U];
::memset(reply, 0x00U, 516U);
if (length > 252U) {
reply[0U] = DVM_LONG_FRAME_START;
reply[1U] = (length >> 8U) & 0xFFU;
reply[2U] = (length & 0xFFU);
reply[3U] = CMD_DEBUG_DUMP;
for (uint8_t i = 0U; i < length; i++)
reply[i + 4U] = data[i];
writeInt(1U, reply, length + 4U);
}
else {
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = length + 3U;
reply[2U] = CMD_DEBUG_DUMP;
for (uint8_t i = 0U; i < length; i++)
reply[i + 3U] = data[i];
writeInt(1U, reply, length + 3U);
}
}
// ---------------------------------------------------------------------------
// Private Class Members
// ---------------------------------------------------------------------------
/* Write acknowlegement. */
void SerialPort::sendACK()
{
uint8_t reply[4U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 4U;
reply[2U] = CMD_ACK;
reply[3U] = m_buffer[2U];
writeInt(1U, reply, 4);
}
/* Write negative acknowlegement. */
void SerialPort::sendNAK(uint8_t err)
{
uint8_t reply[5U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 5U;
reply[2U] = CMD_NAK;
reply[3U] = m_buffer[2U];
reply[4U] = err;
writeInt(1U, reply, 5);
}
/* Write modem DSP status. */
void SerialPort::getStatus()
{
io.resetWatchdog();
uint8_t reply[15U];
// send all sorts of interesting internal values
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 12U;
reply[2U] = CMD_GET_STATUS;
reply[3U] = 0x01U;
if (m_dmrEnable)
reply[3U] |= 0x02U;
if (m_p25Enable)
reply[3U] |= 0x08U;
if (m_nxdnEnable)
reply[3U] |= 0x10U;
reply[4U] = uint8_t(m_modemState);
reply[5U] = m_tx ? 0x01U : 0x00U;
if (io.hasRXOverflow())
reply[5U] |= 0x04U;
if (io.hasTXOverflow())
reply[5U] |= 0x08U;
reply[5U] |= m_dcd ? 0x40U : 0x00U;
reply[6U] = 0U;
if (m_dmrEnable) {
#if defined(DUPLEX)
if (m_duplex) {
reply[7U] = dmrTX.getSpace1();
reply[8U] = dmrTX.getSpace2();
} else {
reply[7U] = 10U;
reply[8U] = dmrDMOTX.getSpace();
}
#else
reply[7U] = 10U;
reply[8U] = dmrDMOTX.getSpace();
#endif
} else {
reply[7U] = 0U;
reply[8U] = 0U;
}
reply[9U] = 0U;
if (m_p25Enable)
reply[10U] = p25TX.getSpace();
else
reply[10U] = 0U;
if (m_nxdnEnable)
reply[11U] = nxdnTX.getSpace();
else
reply[11U] = 0U;
writeInt(1U, reply, 12);
}
/* Write modem DSP version. */
void SerialPort::getVersion()
{
uint8_t reply[200U];
reply[0U] = DVM_SHORT_FRAME_START;
reply[1U] = 0U;
reply[2U] = CMD_GET_VERSION;
reply[3U] = PROTOCOL_VERSION;
reply[4U] = io.getCPU();
// Reserve 16 bytes for the UDID
::memcpy(reply + 5U, 0x00U, 16U);
io.getUDID(reply + 5U);
uint8_t count = 21U;
for (uint8_t i = 0U; HARDWARE[i] != 0x00U; i++, count++)
reply[count] = HARDWARE[i];
reply[1U] = count;
writeInt(1U, reply, count);
}
/* Helper to validate the passed modem state is valid. */
uint8_t SerialPort::modemStateCheck(DVM_STATE state)
{
// invalid mode check
if (state != STATE_IDLE && state != STATE_DMR && state != STATE_P25 && state != STATE_NXDN &&
state != STATE_P25_CAL_1K &&
state != STATE_DMR_DMO_CAL_1K && state != STATE_DMR_CAL_1K &&
state != STATE_DMR_LF_CAL &&
state != STATE_RSSI_CAL &&
state != STATE_P25_CAL && state != STATE_DMR_CAL &&
state != STATE_NXDN_CAL)
return RSN_INVALID_MODE;
/*
// DMR without DMR being enabled
if (state == STATE_DMR && !m_dmrEnable)
return RSN_DMR_DISABLED;
// P25 without P25 being enabled
if (state == STATE_P25 && !m_p25Enable)
return RSN_P25_DISABLED;
// NXDN without NXDN being enabled
if (state == STATE_NXDN && !m_nxdnEnable)
return RSN_NXDN_DISABLED;
*/
return RSN_OK;
}
/* Set modem DSP configuration from serial port data. */
uint8_t SerialPort::setConfig(const uint8_t* data, uint8_t length)
{
if (length < 15U)
return RSN_ILLEGAL_LENGTH;
bool simplex = (data[0U] & 0x80U) == 0x80U;
m_forceDMO = (data[0U] & 0x40U) == 0x40U;
m_debug = (data[0U] & 0x10U) == 0x10U;