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Initial public release of SystemK.

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This commit is contained in:
Joe Kearney 2025-01-25 13:45:14 -06:00
parent 387f57cdda
commit 6f51f5b006
129 changed files with 11654 additions and 2 deletions
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Protocols/Dynasty.c Executable file
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/*
* This program source code file is part of SystemK, a library in the KTag project.
*
* 🛡️ <https://ktag.clubk.club> 🃞
*
* Copyright © 2016-2025 Joseph P. Kearney and the KTag developers.
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the Free
* Software Foundation, either version 3 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 Affero General Public License for more
* details.
*
* There should be a copy of the GNU Affero General Public License in the LICENSE
* file in the root of this repository. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdbool.h>
#include <stdio.h>
#include "SystemK.h"
#define DYNASTY_BLUE_TEAM 0x01
#define DYNASTY_RED_TEAM 0x02
#define DYNASTY_GREEN_TEAM 0x03
#define DYNASTY_WHITE_TEAM 0x04
#define DYNASTY_HEADER_MARK_DURATION_IN_us 1700
#define DYNASTY_ZERO_DURATION_IN_us 450
#define DYNASTY_ONE_DURATION_IN_us 800
#define DYNASTY_TOLERANCE_IN_us 150
#define MIN_ZERO_IN_us (DYNASTY_ZERO_DURATION_IN_us - DYNASTY_TOLERANCE_IN_us)
#define MAX_ZERO_IN_us (DYNASTY_ZERO_DURATION_IN_us + DYNASTY_TOLERANCE_IN_us)
#define MIN_ONE_IN_us (DYNASTY_ONE_DURATION_IN_us - DYNASTY_TOLERANCE_IN_us)
#define MAX_ONE_IN_us (DYNASTY_ONE_DURATION_IN_us + DYNASTY_TOLERANCE_IN_us)
static const TimedBit_T DYNASTY_HEADER_MARK = {.symbol = MARK, .duration = DYNASTY_HEADER_MARK_DURATION_IN_us};
static const TimedBit_T DYNASTY_ZERO_SPACE = {.symbol = SPACE, .duration = DYNASTY_ZERO_DURATION_IN_us};
static const TimedBit_T DYNASTY_ONE_SPACE = {.symbol = SPACE, .duration = DYNASTY_ONE_DURATION_IN_us};
static const TimedBit_T DYNASTY_ZERO_MARK = {.symbol = MARK, .duration = DYNASTY_ZERO_DURATION_IN_us};
static const TimedBit_T DYNASTY_ONE_MARK = {.symbol = MARK, .duration = DYNASTY_ONE_DURATION_IN_us};
static const TimedBit_T DYNASTY_END = {.symbol = SPACE, .duration = LAST_PULSE};
static TimedPulseTrain_T Tag_Send_Buffer;
static DecodedPacket_T Dynasty_Tag_Received_Buffers[3] =
{
{.Tag.type = DECODED_PACKET_TYPE_BUFFER_FREE},
{.Tag.type = DECODED_PACKET_TYPE_BUFFER_FREE},
{.Tag.type = DECODED_PACKET_TYPE_BUFFER_FREE}};
static inline DecodedPacket_T *Get_Tag_Packet_Buffer(void)
{
if (Dynasty_Tag_Received_Buffers[0].Tag.type == DECODED_PACKET_TYPE_BUFFER_FREE)
{
return &Dynasty_Tag_Received_Buffers[0];
}
else if (Dynasty_Tag_Received_Buffers[1].Tag.type == DECODED_PACKET_TYPE_BUFFER_FREE)
{
return &Dynasty_Tag_Received_Buffers[1];
}
else
{
// Just use it.
return &Dynasty_Tag_Received_Buffers[2];
}
}
static inline uint8_t Calculate_Checksum(uint32_t data)
{
uint8_t result = 0;
// uint8_t byte_1 = (uint8_t)((data >> 8) & 0xFF);
// uint8_t byte_0 = (uint8_t)(data & 0xFF);
// TODO: Finish implementing the Dynasty checksum.
return result;
}
static inline void PackPulseTrain(TimedPulseTrain_T *pulsetrain, uint32_t data)
{
pulsetrain->bitstream[0] = DYNASTY_HEADER_MARK;
for (uint8_t n = 0; n < 16; n++)
{
if ((data & 0x0001) == 0x0001)
{
pulsetrain->bitstream[1 + (n * 2)] = DYNASTY_ONE_SPACE;
}
else
{
pulsetrain->bitstream[1 + (n * 2)] = DYNASTY_ZERO_SPACE;
}
data = data >> 1;
if ((data & 0x0001) == 0x0001)
{
pulsetrain->bitstream[1 + (n * 2)] = DYNASTY_ONE_MARK;
}
else
{
pulsetrain->bitstream[1 + (n * 2)] = DYNASTY_ZERO_MARK;
}
data = data >> 1;
}
// TODO: Append the Dynasty checksum.
pulsetrain->bitstream[(2 * 20) - 1] = DYNASTY_END;
}
TimedPulseTrain_T *DYNASTY_EncodePacket(TagPacket_T *packet)
{
uint16_t packed_data = 0;
PackPulseTrain(&Tag_Send_Buffer, packed_data);
return &Tag_Send_Buffer;
}
DecodedPacket_T *DYNASTY_MaybeDecodePacket(TimedPulseTrain_T *packet)
{
// Some implementations (ESP32) do not report odd numbers of pulses.
if ((packet->count != 41) && (packet->count != 42))
{
// Fail fast!
return NULL;
}
else
{
// Convert pulse durations to bits.
// packet->bitstream[0] is the header mark--ignore it.
uint32_t data = 0;
for (uint8_t n = 0; n < 32; n++)
{
if ((packet->bitstream[n + 1].duration > MIN_ONE_IN_us) && (packet->bitstream[n + 1].duration < MAX_ONE_IN_us))
{
// One
data |= ((uint32_t)1 << (31 - n));
}
else if ((packet->bitstream[n + 1].duration > MIN_ZERO_IN_us) && (packet->bitstream[n + 1].duration < MAX_ZERO_IN_us))
{
// Zero--nothing to do.
}
else
{
// This mark is neither a zero or a one; abort.
return NULL;
}
}
uint8_t checksum = 0;
for (uint8_t n = 0; n < 8; n++)
{
if ((packet->bitstream[n + 33].duration > MIN_ONE_IN_us) && (packet->bitstream[n + 33].duration < MAX_ONE_IN_us))
{
// One
checksum |= ((uint8_t)1 << (7 - n));
}
else if ((packet->bitstream[n + 33].duration > MIN_ZERO_IN_us) && (packet->bitstream[n + 33].duration < MAX_ZERO_IN_us))
{
// Zero--nothing to do.
}
else
{
// This mark is neither a zero or a one; abort.
return NULL;
}
}
DecodedPacket_T *Tag_Rx_Buffer = Get_Tag_Packet_Buffer();
Tag_Rx_Buffer->Tag.type = DECODED_PACKET_TYPE_TAG_RECEIVED;
Tag_Rx_Buffer->Tag.protocol = DYNASTY_PROTOCOL;
Tag_Rx_Buffer->Tag.player_ID = 0;
Tag_Rx_Buffer->Tag.team_ID = DYNASTY_RED_TEAM;
Tag_Rx_Buffer->Tag.damage = 10;
Tag_Rx_Buffer->Tag.color = COLOR_RED;
return Tag_Rx_Buffer;
}
}
color_t DYNASTY_GetTeamColor(uint8_t team_ID)
{
color_t result = COLOR_RED;
if (team_ID == DYNASTY_RED_TEAM)
{
result = COLOR_RED;
}
else if (team_ID == DYNASTY_BLUE_TEAM)
{
result = COLOR_BLUE;
}
else if (team_ID == DYNASTY_GREEN_TEAM)
{
result = COLOR_GREEN;
}
else if (team_ID == DYNASTY_WHITE_TEAM)
{
result = COLOR_WHITE;
}
else
{
// Nothing to do.
}
return result;
}