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/*
RailControl - Model Railway Control Software
Copyright (c) 2017-2025 by Teddy / Dominik Mahrer - www.railcontrol.org
RailControl 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 3, or (at your option) any
later version.
RailControl 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 RailControl; see the file LICENCE. If not see
<http://www.gnu.org/licenses/>.
*/
#include <cstring> //memset
#include <fcntl.h>
#include <sstream>
#include <termios.h>
#include "Languages.h"
#include "Network/Select.h"
#include "Hardware/Hsi88.h"
#include "Utils/Integer.h"
namespace Hardware
{
Hsi88::Hsi88(const HardwareParams* params)
: HardwareInterface(params->GetManager(),
params->GetControlID(),
"HSI-88 / " + params->GetName() + " at serial port " + params->GetArg1(),
params->GetName()),
serialLine(logger, params->GetArg1(), B9600, 8, 'N', 1),
run(false)
{
logger->Info(Languages::TextStarting, GetFullName());
memset(s88Init, 0xFF, sizeof(s88Memory));
memset(s88Memory, 0x00, sizeof(s88Memory));
s88Modules1 = Utils::Integer::StringToInteger(params->GetArg2(), 0);
s88Modules2 = Utils::Integer::StringToInteger(params->GetArg3(), 0);
s88Modules3 = Utils::Integer::StringToInteger(params->GetArg4(), 0);
s88Modules = s88Modules1 + s88Modules2 + s88Modules3;
if (s88Modules > MaxS88Modules)
{
logger->Error(Languages::TextTooManyS88Modules, s88Modules, MaxS88Modules);
return;
}
if (s88Modules == 0)
{
logger->Error(Languages::TextNoS88Modules);
return;
}
std::string version = GetVersion();
logger->Info(Languages::TextVersion, version);
unsigned char modulesConfigured = ConfigureS88();
if (s88Modules != modulesConfigured)
{
logger->Error(Languages::TextHsi88ErrorConfiguring, modulesConfigured);
return;
}
logger->Info(Languages::TextHsi88Configured, s88Modules, s88Modules1, s88Modules2, s88Modules3);
checkEventsThread = std::thread(&Hardware::Hsi88::CheckEventsWorker, this);
}
Hsi88::~Hsi88()
{
if (!run)
{
return;
}
run = false;
checkEventsThread.join();
}
std::string Hsi88::ReadUntilCR()
{
std::string data;
unsigned char input = 0;
while (true)
{
int ret = serialLine.Receive(&input, sizeof(input), 1, 0);
if (ret < 0 || input == '\r')
{
logger->HexIn(data);
return data;
}
data.append(reinterpret_cast<char*>(&input), ret);
}
}
std::string Hsi88::GetVersion()
{
const unsigned char command[2] = { 'v', '\r' };
SendData(command, sizeof(command));
return ReadUntilCR();
}
unsigned char Hsi88::ConfigureS88()
{
const unsigned char command [5] = { 's', static_cast<unsigned char>(s88Modules1 >> 1), static_cast<unsigned char>(s88Modules2 >> 1), static_cast<unsigned char>(s88Modules3 >> 1), '\r' };
SendData(command, sizeof(command));
unsigned char input[3];
int ret = serialLine.ReceiveExact(input, sizeof(input));
logger->HexIn(input, sizeof(input));
if (ret <= 0)
{
return 0;
}
if (input[0] != 's')
{
return 0;
}
return input[1] << 1;
}
void Hsi88::ReadData()
{
std::string data;
const unsigned char headerDataSize = 3;
serialLine.ReceiveExact(data, headerDataSize);
if (data.size() != headerDataSize)
{
return;
}
if (data[0] != 'i')
{
return;
}
const unsigned char modules = data[1];
const unsigned char moduleDataSize = modules * 3;
const unsigned char commandSize = moduleDataSize + headerDataSize;
serialLine.ReceiveExact(data, moduleDataSize);
logger->HexIn(data);
if (data.size() != commandSize)
{
return;
}
for (unsigned char module = 0; module < modules; ++module)
{
const unsigned char modulePosition = module * 3 + 2;
const unsigned char* moduleData = reinterpret_cast<const unsigned char*>(data.c_str()) + modulePosition;
if (*moduleData > (MaxS88Modules >> 1))
{
continue;
}
const unsigned char memoryPosition = (data[modulePosition] - 1) * 2;
CheckFeedbackByte(moduleData[2], memoryPosition);
CheckFeedbackByte(moduleData[1], memoryPosition + 1);
}
}
void Hsi88::CheckFeedbackByte(const unsigned char dataByte, const unsigned char module)
{
unsigned char diff = (s88Memory[module] ^ dataByte) | s88Init[module];
if (!diff)
{
return;
}
unsigned char pin = 0;
while (diff)
{
if (diff & 0x01)
{
DataModel::Feedback::FeedbackState state = static_cast<DataModel::Feedback::FeedbackState>((dataByte >> pin) & 0x01);
logger->Info(Languages::TextFeedbackChange, pin + 1, module, Languages::GetOnOff(state));
manager->FeedbackState(controlID, module * 8 + pin + 1, state);
}
diff >>= 1;
++pin;
}
s88Memory[module] = dataByte;
s88Init[module] = 0;
}
void Hsi88::CheckEventsWorker()
{
Utils::Utils::SetThreadName("HSI-88");
run = true;
while (run)
{
ReadData();
std::this_thread::yield();
}
}
} // namespace
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