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dvmfirmware-hs/IO.cpp

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/**
* Digital Voice Modem - DSP Firmware (Hotspot)
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* @package DVM / DSP Firmware (Hotspot)
*
*/
//
// Based on code from the MMDVM_HS project. (https://github.com/juribeparada/MMDVM_HS)
// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
//
/*
* Copyright (C) 2015,2016,2020 by Jonathan Naylor G4KLX
* Copyright (C) 2016,2017,2018,2019,2020 by Andy Uribe CA6JAU
* Copyright (C) 2017 by Danilo DB4PLE
* Copyright (C) 2021 Bryan Biedenkapp N2PLL
*
* 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 "Globals.h"
#include "ADF7021.h"
#include "IO.h"
// ---------------------------------------------------------------------------
// Globals
// ---------------------------------------------------------------------------
uint32_t m_rxFrequency;
uint32_t m_txFrequency;
uint8_t m_rfPower;
// ---------------------------------------------------------------------------
// Public Class Members
// ---------------------------------------------------------------------------
/// <summary>
/// Initializes a new instance of the IO class.
/// </summary>
IO::IO():
m_started(false),
m_rxBuffer(1024U),
m_txBuffer(1024U),
m_ledCount(0U),
m_scanEnable(false),
m_scanPauseCnt(0U),
m_scanPos(0U),
m_ledValue(true),
m_watchdog(0U),
m_int1Counter(0U),
m_int2Counter(0U)
{
initInt();
CE(HIGH);
setLEDInt(HIGH);
setPTTInt(LOW);
setDMRInt(LOW);
setP25Int(LOW);
setCOSInt(LOW);
#if !defined(BIDIR_DATA_PIN)
setTXDInt(LOW);
#endif
SCLK(LOW);
SDATA(LOW);
SLE1(LOW);
#if defined(DUPLEX)
SLE2(LOW);
#endif
selfTest();
m_modeTimerCnt = 0U;
}
/// <summary>
/// Starts air interface sampler.
/// </summary>
void IO::start()
{
m_totalModes = 0U;
if (m_dmrEnable) {
m_modes[m_totalModes] = STATE_DMR;
m_totalModes++;
}
if (m_p25Enable) {
m_modes[m_totalModes] = STATE_P25;
m_totalModes++;
}
#if defined(ENABLE_SCAN_MODE)
if (m_totalModes > 1U) {
m_scanEnable = true;
}
else {
m_scanEnable = false;
setMode(m_modemState);
}
#else
m_scanEnable = false;
setMode(m_modemState);
#endif
if (m_started)
return;
startInt();
m_started = true;
}
/// <summary>
/// Process samples from air interface.
/// </summary>
void IO::process()
{
uint8_t bit;
uint32_t scantime;
uint8_t control;
m_ledCount++;
if (m_started) {
// Two seconds timeout
if (m_watchdog >= 19200U) {
if (m_modemState == STATE_DMR || m_modemState == STATE_P25) {
m_modemState = STATE_IDLE;
setMode(m_modemState);
}
m_watchdog = 0U;
}
if (m_ledCount >= 48000U) {
m_ledCount = 0U;
m_ledValue = !m_ledValue;
setLEDInt(m_ledValue);
}
}
else {
if (m_ledCount >= 480000U) {
m_ledCount = 0U;
m_ledValue = !m_ledValue;
setLEDInt(m_ledValue);
}
return;
}
// Switch off the transmitter if needed
if (m_txBuffer.getData() == 0U && m_tx) {
if (m_cwIdState) {
// check for CW ID end of transmission
m_cwIdState = false;
// restoring previous mode
if (m_totalModes) {
io.rf1Conf(m_modemStatePrev, true);
}
}
setRX(false);
}
if (m_modemStatePrev == STATE_DMR)
scantime = SCAN_TIME * 2U;
else if (m_modemStatePrev == STATE_P25)
scantime = SCAN_TIME;
else
scantime = SCAN_TIME;
if (m_modeTimerCnt >= scantime) {
m_modeTimerCnt = 0U;
if ((m_modemState == STATE_IDLE) && (m_scanPauseCnt == 0U) && m_scanEnable && !m_cwIdState) {
m_scanPos = (m_scanPos + 1U) % m_totalModes;
setMode(m_modes[m_scanPos]);
io.rf1Conf(m_modes[m_scanPos], true);
}
}
if (m_rxBuffer.getData() >= 1U) {
m_rxBuffer.get(bit, control);
if (m_modemStatePrev == STATE_DMR) {
#if defined(DUPLEX)
if (m_duplex) {
if (m_tx)
dmrRX.databit(bit, control);
else
dmrIdleRX.databit(bit);
}
else
dmrDMORX.databit(bit);
#else
dmrDMORX.databit(bit);
#endif
}
else if (m_modemStatePrev == STATE_P25) {
p25RX.databit(bit);
}
}
}
/// <summary>
/// Write bits to air interface.
/// </summary>
/// <param name="mode"></param>
/// <param name="samples"></param>
/// <param name="length"></param>
/// <param name="control"></param>
void IO::write(uint8_t* data, uint16_t length, const uint8_t* control)
{
if (!m_started)
return;
for (uint16_t i = 0U; i < length; i++) {
if (control == NULL)
m_txBuffer.put(data[i], MARK_NONE);
else
m_txBuffer.put(data[i], control[i]);
}
// switch the transmitter on if needed
if (!m_tx) {
setTX();
m_tx = true;
}
}
/// <summary>
/// Helper to get how much space the transmit ring buffer has for samples.
/// </summary>
/// <returns></returns>
uint16_t IO::getSpace() const
{
return m_txBuffer.getSpace();
}
/// <summary>
///
/// </summary>
/// <param name="dcd"></param>
void IO::setDecode(bool dcd)
{
if (dcd != m_dcd) {
m_scanPauseCnt = 1U;
setCOSInt(dcd ? true : false);
}
m_dcd = dcd;
}
/// <summary>
/// Helper to set the modem air interface state.
/// </summary>
void IO::setMode(DVM_STATE modemState)
{
setDMRInt(modemState == STATE_DMR);
setP25Int(modemState == STATE_P25);
}
/// <summary>
/// Sets the RF parameters.
/// </summary>
/// <param name="rxFreq"></param>
/// <param name="txFreq"></param>
/// <param name="rfPower"></param>
uint8_t IO::setRFParams(uint32_t rxFreq, uint32_t txFreq, uint8_t rfPower)
{
m_rfPower = rfPower >> 2;
// check frequency ranges
if (!(
/** 136 - 174 mhz */
((rxFreq >= VHF_MIN) && (rxFreq < VHF_MAX)) || ((txFreq >= VHF_MIN) && (txFreq < VHF_MAX)) ||
/** 216 - 225 mhz */
((rxFreq >= VHF_220_MIN) && (rxFreq < VHF_220_MAX)) || ((txFreq >= VHF_220_MIN) && (txFreq < VHF_220_MAX)) ||
/** 380 - 431 mhz */
((rxFreq >= UHF_380_MIN) && (rxFreq < UHF_380_MAX)) || ((txFreq >= UHF_380_MIN) && (txFreq < UHF_380_MAX)) ||
/** 431 - 450 mhz */
((rxFreq >= UHF_1_MIN) && (rxFreq < UHF_1_MAX)) || ((txFreq >= UHF_1_MIN) && (txFreq < UHF_1_MAX)) ||
/** 450 - 470 mhz */
((rxFreq >= UHF_2_MIN) && (rxFreq < UHF_2_MAX)) || ((txFreq >= UHF_2_MIN) && (txFreq < UHF_2_MAX)) ||
/** 470 - 520 mhz */
((rxFreq >= UHF_T_MIN) && (rxFreq < UHF_T_MAX)) || ((txFreq >= UHF_T_MIN) && (txFreq < UHF_T_MAX)) ||
/** 842 - 900 mhz */
((rxFreq >= UHF_800_MIN) && (rxFreq < UHF_800_MAX)) || ((txFreq >= UHF_800_MIN) && (txFreq < UHF_800_MAX)) ||
/** 900 - 950 mhz */
((rxFreq >= UHF_900_MIN) && (rxFreq < UHF_900_MAX)) || ((txFreq >= UHF_900_MIN) && (txFreq < UHF_900_MAX))
))
return RSN_INVALID_REQUEST;
#if defined(ZUMSPOT_ADF7021) || defined(LONESTAR_USB) || defined(SKYBRIDGE_HS)
// check hotspot configuration for single or dual ADF7021
if (!(io.hasSingleADF7021())) {
// there are two ADF7021s on the board -- are they dual-band?
if (io.isDualBand()) {
// dual band
if ((txFreq <= VHF_220_MAX) && (rxFreq <= VHF_220_MAX)) {
// turn on VHF side
io.setBandVHF(true);
}
else if ((txFreq >= UHF_1_MIN) && (rxFreq >= UHF_1_MIN)) {
// turn on UHF side
io.setBandVHF(false);
}
}
else if (!io.isDualBand()) {
// duplex board
if ((txFreq < UHF_1_MIN) || (rxFreq < UHF_1_MIN)) {
// Reject VHF frequencies
return RSN_INVALID_REQUEST;
}
}
}
#endif
m_rxFrequency = rxFreq;
m_txFrequency = txFreq;
return RSN_OK;
}
/// <summary>
/// Flag indicating the TX ring buffer has overflowed.
/// </summary>
/// <returns></returns>
bool IO::hasTXOverflow()
{
return m_txBuffer.hasOverflowed();
}
/// <summary>
/// Flag indicating the RX ring buffer has overflowed.
/// </summary>
/// <returns></returns>
bool IO::hasRXOverflow()
{
return m_rxBuffer.hasOverflowed();
}
/// <summary>
///
/// </summary>
void IO::resetWatchdog()
{
m_watchdog = 0U;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
uint32_t IO::getWatchdog()
{
return m_watchdog;
}
/// <summary>
///
/// </summary>
void IO::selfTest()
{
bool ledValue = false;
uint32_t ledCount = 0U;
uint32_t blinks = 0U;
while (true) {
ledCount++;
delayUS(1000U);
if (ledCount >= 125U) {
ledCount = 0U;
ledValue = !ledValue;
setLEDInt(!ledValue);
setPTTInt(ledValue);
setDMRInt(ledValue);
setP25Int(ledValue);
setCOSInt(ledValue);
blinks++;
if (blinks > 5U)
break;
}
}
}
/// <summary>
///
/// </summary>
/// <param name="int1"></param>
/// <param name="int2"></param>
void IO::getIntCounter(uint16_t& int1, uint16_t& int2)
{
int1 = m_int1Counter;
int2 = m_int2Counter;
m_int1Counter = 0U;
m_int2Counter = 0U;
}
// ---------------------------------------------------------------------------
// Private Class Members
// ---------------------------------------------------------------------------
#if defined(ZUMSPOT_ADF7021) || defined(LONESTAR_USB) || defined(SKYBRIDGE_HS)
/// <summary>
///
/// </summary>
/// <param name="rxFreq"></param>
/// <param name="txFreq"></param>
void IO::checkBand(uint32_t rxFreq, uint32_t txFreq)
{
// check hotspot configuration for single or dual ADF7021
if (!(io.hasSingleADF7021())) {
// there are two ADF7021s on the board -- are they dual-band?
if (io.isDualBand()) {
// dual band
if ((txFreq <= VHF_220_MAX) && (rxFreq <= VHF_220_MAX)) {
// turn on VHF side
io.setBandVHF(true);
}
else if ((txFreq >= UHF_1_MIN) && (rxFreq >= UHF_1_MIN)) {
// turn on UHF side
io.setBandVHF(false);
}
}
}
}
#endif
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