void main()
{
InitModules();
while(1)
{
ReadSensor();
CalculatePPM();
DisplayAirQValue( ppm );
Delay_ms(500);
}
}
void RRCSSensor::Run() {
auto thread_lambda = [this]() -> void {
std::cout << "Starting " << name_ << std::endl;
time_ = std::chrono::high_resolution_clock::now();
time_ += std::chrono::milliseconds(10000);
bool queue_status = true;
RRCSSensorMeasurement d;
while(!abort_() && queue_status) {
std::this_thread::sleep_until(time_);
ReadSensor(d, time_);
time_ += rate_;
queue_status = update_(d);
}
};
thread_ = std::thread(thread_lambda);
}
//==========================================================================
// Class: DS18B20
// Function: ReadSensor
//
// Description: Reads current temperature from DS18B20 sensor.
//
// Input Arguments:
// recursion = unsigned int, number of attempts to make in the event of repeated errors
//
// Output Arguments:
// temperature = double& [deg C]
//
// Return Value:
// bool, true for success, false otherwise
//
//==========================================================================
bool DS18B20::ReadSensor(double &temperature, unsigned int recursion) const
{
if (recursion == 0)
return false;
std::ifstream file(device.c_str(), std::ios::in);
if (!file.is_open() || !file.good())
{
outStream << "Could not open file '" << device << "' for input" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
std::string data;
if (!std::getline(file, data))
{
outStream << "Failed to read CRC from file '" << device << "'" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
// Line must contain at least "YES" at the end...
if (data.length() < 3)
{
outStream << "File contents too short (" << deviceID << ")" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
if (data.substr(data.length() - 3).compare("YES") != 0)
{
// This happens quite often - might want to disable this statement
// after testing is complete, to avoid spamming?
outStream << "Bad checksum (" << deviceID << ")" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
if (!std::getline(file, data))
{
outStream << "Failed to read temperature from file '" << device << "'" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
size_t start(data.find("t="));
if (start == std::string::npos)
{
outStream << "Temperature reading does not contain 't='"
<< " (" << deviceID << ")" << std::endl;
return ReadSensor(temperature, recursion - 1);
}
temperature = atof(data.substr(start + 2).c_str()) / 1000.0;
return true;
}
//==========================================================================
// Class: DS18B20
// Function: GetTemperature
//
// Description: Reads current temperature from DS18B20 sensor.
//
// Input Arguments:
// None
//
// Output Arguments:
// temperature = double& [deg C]
//
// Return Value:
// bool, true for success, false otherwise
//
//==========================================================================
bool DS18B20::GetTemperature(double &temperature) const
{
return ReadSensor(temperature, allowedRecursions);
}
