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SzymonKatra / IoTLib

Prototype of multiplatform library for embedded systems that allows writing portable code for handling sensors and other external peripherals.

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IoTLib

Prototype of multiplatform library for embedded systems that allows writing portable code for handling sensors and other external peripherals.

Supported platforms:

Supported peripherals:

  • Humidity, barometric and temperature sensor BME280
  • Digital temperature sensor DS18B20
  • LCD controller HD44780
  • Analog temperature sensor MCP9700
  • Smog sensor PMS3003

Example usage

(...)

int main()
{
    // Hardware
    iotlib::I2CBus i2c(app::I2CBus, app::I2CBus_SDA, app::I2CBus_SCL);
    iotlib::OneWireBus oneWire(app::OneWireBus);
    iotlib::UARTPort uart(app::UARTPort, 9600, iotlib::UARTPort::Parity::None, iotlib::UARTPort::StopBits::One);
    iotlib::Gpio io0(app::IO0, iotlib::Gpio::Direction::Output);

    // Device manager
    iotlib::DeviceManager deviceManager;

    // Drivers
    iotlib::HD44780 lcd(deviceManager.createI2CDevice(i2c, app::HD44780_ADDRESS));
    iotlib::DS18B20 tempProbe(deviceManager.createOneWireDevice(oneWire));
    iotlib::BME280 weatherSensor(deviceManager.createI2CDevice(i2c, app::BME280_ADDRESS));
    iotlib::PMS3003 smogSensor(deviceManager.createUARTDevice(uart));
    iotlib::Device& ledDevice = deviceManager.createGpioDevice(io0);

    tempProbe.startConversion();

    lcd.text(" *** IoTLib *** ");
    lcd.cursorGoTo(0, 1);
    lcd.text("  multiplatform ");
    iotlib::System::sleep(2000);

    char buffer[8][17];
    uint8_t scroll = 0;
    while (true)
    {
        ledDevice.write(ledDevice.read() == 0 ? 1 : 0);

        int8_t probeTemp;
        iotlib::BME280::Result weatherResult;
        iotlib::PMS3003::Data smogResult;

        probeTemp = tempProbe.readIntTemperature();
        weatherSensor.getData(weatherResult);
        smogSensor.read(smogResult);

        tempProbe.startConversion();

        uint8_t line = 0;
        sprintf(buffer[line++], "Temp: %d \xDF""C", probeTemp);
        *buffer[line++] = 0;
        sprintf(buffer[line++], "Temp: %d \xDF""C", weatherResult.Temperature / 100);
        sprintf(buffer[line++], "Humid: %d%%", weatherResult.Humidity / 1024);
        sprintf(buffer[line++], "%d hPa", weatherResult.Pressure / (100 * 100));
        sprintf(buffer[line++], "PM 1: %d", smogResult.PM1Outdoor);
        sprintf(buffer[line++], "PM 2.5: %d", smogResult.PM2_5Outdoor);
        sprintf(buffer[line++], "PM 10: %d", smogResult.PM10Outdoor);

        lcd.clear();
        lcd.text(buffer[scroll % 8]);
        lcd.cursorGoTo(0, 1);
        lcd.text(buffer[(scroll + 1) % 8]);

        scroll += 2;
        iotlib::System::sleep(1500);
    }
}

Source code

  • iotlib directory - source code of the library,
  • examples directory - source code of example applications.

Usage

Raspberry Pi

Requirements:

  • gcc, make, cmake
  1. Clone repository
  2. cd examples/rpi_wip/
  3. configure.sh
  4. cd build/Debugorcd build/Relaseand usemake` to compile the project.

ESP8266

Requirements:

  1. Clone repository
  2. cd examples/esp8266_wip
  3. Connect ESP8266 board to PC (it must have built-it USB-UART converted, otherwise please use external one)
  4. make menuconfig and select serial port where your board is connected,
  5. make app-flash. Example project will be built and uploaded to the board.

References

About

Prototype of multiplatform library for embedded systems that allows writing portable code for handling sensors and other external peripherals.

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Language:C 74.4%Language:C++ 25.6%