portapack-mayhem/firmware/common/emu_cc1101.hpp
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/*
* Copyright (C) 2017 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2017 Furrtek
*
* This file is part of PortaPack.
*
* 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, 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __EMU_CC1101_H__
#define __EMU_CC1101_H__
#include <cstdint>
#include <array>
#include "utility.hpp"
namespace cc1101 {
// Data rate (Bauds)
// Whitening: Everything except preamble and sync word, init value = 111111111
// Packet format: preamble, sync word, (opt) length, (opt) address, payload, (opt) CRC
// Preamble: 8*n bits of 10101010
// Sync word: 2 bytes (can be repeated twice)
// Length: 1 byte (address + payload)
// 2-FSK: 0=-dev, 1=+dev
// 4-FSK: 00=-1/3dev, 01=-dev, 10=1/3dev, 11=+dev (preamble and sync are in 2-FSK)
// OOK: PA on or off
// ASK: Power can be adjusted
// FEC: ?
class CC1101Emu {
public:
// CC1101Emu();
//~CC1101Emu();
enum packet_mode_t {
FIXED_LENGTH,
VARIABLE_LENGTH,
INFINITE_LENGTH
};
enum modulation_t {
TWO_FSK,
GFSK,
OOK,
FOUR_FSK,
MSK,
};
void set_sync_word(const uint16_t sync_word) {
sync_word_ = sync_word;
};
void set_address(const uint8_t address) {
address_ = address;
};
void set_packet_length(const uint8_t packet_length) {
packet_length_ = packet_length;
};
void set_data_config(const bool CRC, const bool manchester, const bool whitening) {
CRC_ = CRC;
manchester_ = manchester;
whitening_ = whitening;
};
void set_packet_mode(const packet_mode_t packet_mode) {
packet_mode_ = packet_mode;
};
void set_modulation(const modulation_t modulation) {
modulation_ = modulation;
}
void set_num_preamble(const uint8_t num_preamble) { // 2, 3, 4, 6, 8, 12, 16, or 24
num_preamble_ = num_preamble;
};
void set_deviation(const size_t deviation) {
deviation_ = deviation;
};
private:
uint16_t sync_word_{0xD391};
uint8_t address_{0x00};
uint8_t packet_length_{0};
bool CRC_{false};
bool manchester_{false};
bool whitening_{true};
packet_mode_t packet_mode_{VARIABLE_LENGTH};
modulation_t modulation_{TWO_FSK};
uint8_t num_preamble_{4};
size_t deviation_{4000};
uint16_t whitening_pn{0x1FF};
void whitening_init();
uint8_t whiten_byte(uint8_t byte);
};
} /* namespace cc1101 */
#endif /*__EMU_CC1101_H__*/