You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.6 KiB
99 lines
2.6 KiB
// 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) 2015,2016 Jonathan Naylor, G4KLX
|
|
* Copyright (C) 2016 Colin Durbridge, G4EML
|
|
* Copyright (C) 2016,2017,2018 Andy Uribe, CA6JAU
|
|
* Copyright (C) 2021 Bryan Biedenkapp, N2PLL
|
|
*
|
|
*/
|
|
/**
|
|
* @file DMRDMOTX.h
|
|
* @ingroup dmr_hfw
|
|
* @file DMRDMOTX.h
|
|
* @ingroup dmr_hfw
|
|
*/
|
|
#if !defined(__DMR_DMO_TX_H__)
|
|
#define __DMR_DMO_TX_H__
|
|
|
|
#include "Defines.h"
|
|
#include "dmr/DMRDefines.h"
|
|
#include "SerialBuffer.h"
|
|
|
|
namespace dmr
|
|
{
|
|
// ---------------------------------------------------------------------------
|
|
// Constants
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#define DMRDMO_FIXED_DELAY 300 // 300 = 62.49ms
|
|
// Delay Value * 0.2083 = Preamble Length (ms)
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Class Declaration
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/**
|
|
* @brief Implements transmitter logic for DMR DMO mode operation.
|
|
* @ingroup dmr_hfw
|
|
*/
|
|
class DSP_FW_API DMRDMOTX {
|
|
public:
|
|
/**
|
|
* @brief Initializes a new instance of the DMRDMOTX class.
|
|
*/
|
|
DMRDMOTX();
|
|
|
|
/**
|
|
* @brief Process local buffer and transmit on the air interface.
|
|
*/
|
|
void process();
|
|
|
|
/**
|
|
* @brief Write data to the local buffer.
|
|
* @param[in] data Buffer.
|
|
* @param length Length of buffer.
|
|
* @returns uint8_t Reason code.
|
|
*/
|
|
uint8_t writeData(const uint8_t* data, uint8_t length);
|
|
|
|
/**
|
|
* @brief Sets the FDMA preamble count.
|
|
* @param preambleCnt FDMA preamble count.
|
|
*/
|
|
void setPreambleCount(uint8_t preambleCnt);
|
|
|
|
/**
|
|
* @brief Helper to resize the FIFO buffer.
|
|
* @param size
|
|
*/
|
|
void resizeBuffer(uint16_t size);
|
|
|
|
/**
|
|
* @brief Helper to get how much space the ring buffer has for samples.
|
|
* @returns uint8_t Amount of space in ring buffer for samples.
|
|
*/
|
|
uint16_t getSpace() const;
|
|
|
|
private:
|
|
SerialBuffer m_fifo;
|
|
|
|
uint8_t m_poBuffer[80U];
|
|
uint16_t m_poLen;
|
|
uint16_t m_poPtr;
|
|
|
|
uint32_t m_preambleCnt;
|
|
|
|
/**
|
|
* @brief Helper to write a raw byte to the DAC.
|
|
* @param c Byte.
|
|
*/
|
|
void writeByte(uint8_t c);
|
|
};
|
|
} // namespace dmr
|
|
|
|
#endif // __DMR_DMO_TX_H__
|