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408 lines
10 KiB
408 lines
10 KiB
/**
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* Digital Voice Modem - DSP Firmware (Hotspot)
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* GPLv2 Open Source. Use is subject to license terms.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* @package DVM / DSP Firmware (Hotspot)
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*
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*/
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//
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// Based on code from the MMDVM_HS project. (https://github.com/juribeparada/MMDVM_HS)
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// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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//
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/*
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* Copyright (C) 2015,2016,2020 by Jonathan Naylor G4KLX
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* Copyright (C) 2016,2017,2018,2019,2020 by Andy Uribe CA6JAU
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* Copyright (C) 2017 by Danilo DB4PLE
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* Copyright (C) 2021 Bryan Biedenkapp N2PLL
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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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* 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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#include "Globals.h"
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#include "ADF7021.h"
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#include "IO.h"
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// ---------------------------------------------------------------------------
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// Public Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Initializes a new instance of the IO class.
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/// </summary>
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IO::IO():
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m_started(false),
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m_rxBuffer(1024U),
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m_txBuffer(1024U),
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m_ledCount(0U),
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m_ledValue(true),
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m_watchdog(0U),
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m_int1Counter(0U),
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m_int2Counter(0U),
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m_rxFrequency(DEFAULT_FREQUENCY),
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m_txFrequency(DEFAULT_FREQUENCY),
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m_rfPower(0U),
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m_gainMode(ADF_GAIN_AUTO)
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{
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initInt();
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CE(HIGH);
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setLEDInt(HIGH);
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setPTTInt(LOW);
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setDMRInt(LOW);
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setP25Int(LOW);
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setCOSInt(LOW);
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#if !defined(BIDIR_DATA_PIN)
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setTXDInt(LOW);
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#endif
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SCLK(LOW);
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SDATA(LOW);
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SLE1(LOW);
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#if defined(DUPLEX)
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SLE2(LOW);
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#endif
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selfTest();
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}
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/// <summary>
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/// Starts air interface sampler.
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/// </summary>
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void IO::start()
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{
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if (m_started)
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return;
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startInt();
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m_started = true;
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}
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/// <summary>
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/// Process samples from air interface.
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/// </summary>
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void IO::process()
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{
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uint8_t bit;
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uint32_t scanTime;
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uint8_t control;
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m_ledCount++;
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if (m_started) {
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// Two seconds timeout
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if (m_watchdog >= 19200U) {
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/*
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if (m_modemState == STATE_DMR || m_modemState == STATE_P25) {
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m_modemState = STATE_IDLE;
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setMode(m_modemState);
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}
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*/
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m_watchdog = 0U;
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}
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if (m_ledCount >= 48000U) {
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m_ledCount = 0U;
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m_ledValue = !m_ledValue;
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setLEDInt(m_ledValue);
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}
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}
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else {
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if (m_ledCount >= 480000U) {
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m_ledCount = 0U;
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m_ledValue = !m_ledValue;
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setLEDInt(m_ledValue);
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}
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return;
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}
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// switch off the transmitter if needed
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if (m_txBuffer.getData() == 0U && m_tx) {
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if (m_cwIdState) {
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// check for CW ID end of transmission
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m_cwIdState = false;
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io.rf1Conf(m_modemState, true);
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}
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setRX(false);
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}
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if (m_rxBuffer.getData() >= 1U) {
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m_rxBuffer.get(bit, control);
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if (m_modemState == STATE_DMR) {
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/** Digital Mobile Radio */
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#if defined(DUPLEX)
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if (m_duplex) {
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if (m_tx)
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dmrRX.databit(bit, control);
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else
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dmrIdleRX.databit(bit);
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}
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else
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dmrDMORX.databit(bit);
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#else
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dmrDMORX.databit(bit);
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#endif
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}
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else if (m_modemState == STATE_P25) {
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/** Project 25 */
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p25RX.databit(bit);
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}
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}
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}
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/// <summary>
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/// Write bits to air interface.
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/// </summary>
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/// <param name="mode"></param>
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/// <param name="samples"></param>
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/// <param name="length"></param>
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/// <param name="control"></param>
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void IO::write(uint8_t* data, uint16_t length, const uint8_t* control)
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{
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if (!m_started)
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return;
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for (uint16_t i = 0U; i < length; i++) {
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if (control == NULL)
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m_txBuffer.put(data[i], MARK_NONE);
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else
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m_txBuffer.put(data[i], control[i]);
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}
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// switch the transmitter on if needed
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if (!m_tx) {
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setTX();
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m_tx = true;
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}
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}
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/// <summary>
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/// Helper to get how much space the transmit ring buffer has for samples.
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/// </summary>
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/// <returns></returns>
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uint16_t IO::getSpace() const
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{
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return m_txBuffer.getSpace();
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="dcd"></param>
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void IO::setDecode(bool dcd)
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{
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if (dcd != m_dcd)
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setCOSInt(dcd ? true : false);
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m_dcd = dcd;
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}
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/// <summary>
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/// Helper to set the modem air interface state.
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/// </summary>
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void IO::setMode(DVM_STATE modemState)
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{
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DVM_STATE relativeState = modemState;
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if (serial.isCalState(modemState)) {
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relativeState = serial.calRelativeState(modemState);
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}
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DEBUG3("IO::setMode(): setting RF hardware", modemState, relativeState);
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rf1Conf(relativeState, true);
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setDMRInt(relativeState == STATE_DMR);
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setP25Int(relativeState == STATE_P25);
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}
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/// <summary>
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/// Sets the RF parameters.
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/// </summary>
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/// <param name="rxFreq"></param>
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/// <param name="txFreq"></param>
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/// <param name="rfPower"></param>
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/// <param name="gainMode"></param>
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uint8_t IO::setRFParams(uint32_t rxFreq, uint32_t txFreq, uint8_t rfPower, ADF_GAIN_MODE gainMode)
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{
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m_rfPower = rfPower >> 2;
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m_gainMode = gainMode;
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// check frequency ranges
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if (!(
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/** 136 - 174 mhz */
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((rxFreq >= VHF_MIN) && (rxFreq < VHF_MAX)) || ((txFreq >= VHF_MIN) && (txFreq < VHF_MAX)) ||
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/** 216 - 225 mhz */
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((rxFreq >= VHF_220_MIN) && (rxFreq < VHF_220_MAX)) || ((txFreq >= VHF_220_MIN) && (txFreq < VHF_220_MAX)) ||
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/** 380 - 431 mhz */
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((rxFreq >= UHF_380_MIN) && (rxFreq < UHF_380_MAX)) || ((txFreq >= UHF_380_MIN) && (txFreq < UHF_380_MAX)) ||
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/** 431 - 450 mhz */
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((rxFreq >= UHF_1_MIN) && (rxFreq < UHF_1_MAX)) || ((txFreq >= UHF_1_MIN) && (txFreq < UHF_1_MAX)) ||
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/** 450 - 470 mhz */
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((rxFreq >= UHF_2_MIN) && (rxFreq < UHF_2_MAX)) || ((txFreq >= UHF_2_MIN) && (txFreq < UHF_2_MAX)) ||
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/** 470 - 520 mhz */
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((rxFreq >= UHF_T_MIN) && (rxFreq < UHF_T_MAX)) || ((txFreq >= UHF_T_MIN) && (txFreq < UHF_T_MAX)) ||
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/** 842 - 900 mhz */
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((rxFreq >= UHF_800_MIN) && (rxFreq < UHF_800_MAX)) || ((txFreq >= UHF_800_MIN) && (txFreq < UHF_800_MAX)) ||
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/** 900 - 950 mhz */
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((rxFreq >= UHF_900_MIN) && (rxFreq < UHF_900_MAX)) || ((txFreq >= UHF_900_MIN) && (txFreq < UHF_900_MAX))
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))
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return RSN_INVALID_REQUEST;
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#if defined(ZUMSPOT_ADF7021) || defined(LONESTAR_USB) || defined(SKYBRIDGE_HS)
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// check hotspot configuration for single or dual ADF7021
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if (!(io.hasSingleADF7021())) {
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// there are two ADF7021s on the board -- are they dual-band?
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if (io.isDualBand()) {
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// dual band
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if ((txFreq <= VHF_220_MAX) && (rxFreq <= VHF_220_MAX)) {
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// turn on VHF side
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io.setBandVHF(true);
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}
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else if ((txFreq >= UHF_1_MIN) && (rxFreq >= UHF_1_MIN)) {
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// turn on UHF side
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io.setBandVHF(false);
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}
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}
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else if (!io.isDualBand()) {
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// duplex board
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if ((txFreq < UHF_1_MIN) || (rxFreq < UHF_1_MIN)) {
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// Reject VHF frequencies
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return RSN_INVALID_REQUEST;
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}
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}
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}
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#endif
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m_rxFrequency = rxFreq;
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m_txFrequency = txFreq;
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DEBUG5("IO::setRFParams(): setting RF params", m_rxFrequency, m_txFrequency, m_rfPower, m_gainMode);
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return RSN_OK;
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}
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/// <summary>
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/// Flag indicating the TX ring buffer has overflowed.
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/// </summary>
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/// <returns></returns>
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bool IO::hasTXOverflow()
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{
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return m_txBuffer.hasOverflowed();
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}
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/// <summary>
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/// Flag indicating the RX ring buffer has overflowed.
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/// </summary>
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/// <returns></returns>
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bool IO::hasRXOverflow()
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{
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return m_rxBuffer.hasOverflowed();
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}
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/// <summary>
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///
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/// </summary>
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void IO::resetWatchdog()
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{
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m_watchdog = 0U;
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}
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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uint32_t IO::getWatchdog()
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{
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return m_watchdog;
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}
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/// <summary>
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///
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/// </summary>
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void IO::selfTest()
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{
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bool ledValue = false;
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uint32_t ledCount = 0U;
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uint32_t blinks = 0U;
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while (true) {
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ledCount++;
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delayUS(1000U);
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if (ledCount >= 125U) {
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ledCount = 0U;
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ledValue = !ledValue;
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setLEDInt(!ledValue);
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setPTTInt(ledValue);
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setDMRInt(ledValue);
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setP25Int(ledValue);
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setCOSInt(ledValue);
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blinks++;
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if (blinks > 5U)
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break;
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}
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}
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="int1"></param>
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/// <param name="int2"></param>
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void IO::getIntCounter(uint16_t& int1, uint16_t& int2)
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{
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int1 = m_int1Counter;
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int2 = m_int2Counter;
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m_int1Counter = 0U;
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m_int2Counter = 0U;
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}
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// ---------------------------------------------------------------------------
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// Private Class Members
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// ---------------------------------------------------------------------------
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#if defined(ZUMSPOT_ADF7021) || defined(LONESTAR_USB) || defined(SKYBRIDGE_HS)
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/// <summary>
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///
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/// </summary>
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/// <param name="rxFreq"></param>
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/// <param name="txFreq"></param>
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void IO::checkBand(uint32_t rxFreq, uint32_t txFreq)
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{
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// check hotspot configuration for single or dual ADF7021
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if (!(io.hasSingleADF7021())) {
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// there are two ADF7021s on the board -- are they dual-band?
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if (io.isDualBand()) {
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// dual band
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if ((txFreq <= VHF_220_MAX) && (rxFreq <= VHF_220_MAX)) {
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// turn on VHF side
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io.setBandVHF(true);
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}
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else if ((txFreq >= UHF_1_MIN) && (rxFreq >= UHF_1_MIN)) {
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// turn on UHF side
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io.setBandVHF(false);
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}
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}
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}
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}
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#endif
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