92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
package sensor
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import (
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"fmt"
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"time"
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"github.com/MichaelS11/go-dht"
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uuid "github.com/satori/go.uuid"
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"github.com/volker-raschek/flucky/pkg/types"
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)
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// DHT11 is a sensor to measure humidity and temperature.
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type DHT11 struct {
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*types.Sensor
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}
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// GetEnabled returns a boolen if the sensor is enabled or disabled
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func (s *DHT11) GetEnabled() bool {
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return s.SensorEnabled
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}
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// GetSensorModel returns the sensor model
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func (s *DHT11) GetSensorModel() types.SensorModel {
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return s.Sensor.SensorModel
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}
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// ReadHumidity measure the humidity
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func (s *DHT11) ReadHumidity() (*types.Humidity, error) {
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err := dht.HostInit()
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if err != nil {
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return nil, fmt.Errorf("HostInit error: %v", err)
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}
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gpio, err := types.GPIOToString(*s.GPIONumber)
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if err != nil {
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return nil, err
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}
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dht, err := dht.NewDHT(gpio, dht.Celsius, "")
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if err != nil {
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return nil, fmt.Errorf("NewDHT error: %v", err)
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}
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humidityValue, _, err := dht.Read()
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if err != nil {
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return nil, fmt.Errorf("Read error: %v", err)
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}
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humidity := &types.Humidity{
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HumidityID: uuid.NewV4().String(),
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HumidityValue: humidityValue,
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HumidityFromDate: time.Now(),
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HumidityTillDate: time.Now(),
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SensorID: s.SensorID,
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}
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return humidity, nil
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}
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// ReadTemperature measure the temperature
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func (s *DHT11) ReadTemperature() (*types.Temperature, error) {
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err := dht.HostInit()
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if err != nil {
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return nil, fmt.Errorf("HostInit error: %v", err)
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}
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gpio, err := types.GPIOToString(*s.GPIONumber)
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if err != nil {
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return nil, err
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}
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dht, err := dht.NewDHT(gpio, dht.Celsius, "")
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if err != nil {
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return nil, fmt.Errorf("NewDHT error: %v", err)
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}
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_, temperatureValue, err := dht.Read()
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if err != nil {
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return nil, fmt.Errorf("Read error: %v", err)
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}
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temperature := &types.Temperature{
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TemperatureID: uuid.NewV4().String(),
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TemperatureValue: temperatureValue,
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TemperatureFromDate: time.Now(),
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TemperatureTillDate: time.Now(),
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SensorID: s.SensorID,
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}
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return temperature, nil
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}
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